Mixing
Create a custom View by inflating a layout?
75
I am trying to create a custom View that would replace a certain layout that I use at multiple places, but I am struggling to do so.
Basically, I want to replace this:
<RelativeLayout
android:id="@+id/dolphinLine"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:background="@drawable/background_box_light_blue"
android:padding="10dip"
android:layout_margin="10dip">
<TextView
android:id="@+id/dolphinTitle"
android:layout_width="200dip"
android:layout_height="100dip"
android:layout_alignParentLeft="true"
android:layout_marginLeft="10dip"
android:text="@string/my_title"
android:textSize="30dip"
android:textStyle="bold"
android:textColor="#2E4C71"
android:gravity="center"/>
<Button
android:id="@+id/dolphinMinusButton"
android:layout_width="100dip"
android:layout_height="100dip"
android:layout_toRightOf="@+id/dolphinTitle"
android:layout_marginLeft="30dip"
android:text="@string/minus_button"
android:textSize="70dip"
android:textStyle="bold"
android:gravity="center"
android:layout_marginTop="1dip"
android:background="@drawable/button_blue_square_selector"
android:textColor="#FFFFFF"
android:onClick="onClick"/>
<TextView
android:id="@+id/dolphinValue"
android:layout_width="100dip"
android:layout_height="100dip"
android:layout_marginLeft="15dip"
android:background="@android:drawable/editbox_background"
android:layout_toRightOf="@+id/dolphinMinusButton"
android:text="0"
android:textColor="#2E4C71"
android:textSize="50dip"
android:gravity="center"
android:textStyle="bold"
android:inputType="none"/>
<Button
android:id="@+id/dolphinPlusButton"
android:layout_width="100dip"
android:layout_height="100dip"
android:layout_toRightOf="@+id/dolphinValue"
android:layout_marginLeft="15dip"
android:text="@string/plus_button"
android:textSize="70dip"
android:textStyle="bold"
android:gravity="center"
android:layout_marginTop="1dip"
android:background="@drawable/button_blue_square_selector"
android:textColor="#FFFFFF"
android:onClick="onClick"/>
</RelativeLayout>
By this:
<view class="com.example.MyQuantityBox"
android:id="@+id/dolphinBox"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:myCustomAttribute="@string/my_title"/>
So, I do not want a custom layout, I want a custom View (it should not be possible for this view to have child).
The only thing that could change from one instance of a MyQuantityBox to another is the title. I would very much like to be able to specify this in the XML (as I do on the last XML line)
How can I do this? Should I put the RelativeLayout in a XML file in /res/layout and inflate it in my MyBoxQuantity class? If yes how do I do so?
Thanks!
android xml view asked Dec 1 '10 at 20:34
nbarraillenbarraille
5,795125188
add a comment |
75
I am trying to create a custom View that would replace a certain layout that I use at multiple places, but I am struggling to do so.
Basically, I want to replace this:
<RelativeLayout
android:id="@+id/dolphinLine"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:background="@drawable/background_box_light_blue"
android:padding="10dip"
android:layout_margin="10dip">
<TextView
android:id="@+id/dolphinTitle"
android:layout_width="200dip"
android:layout_height="100dip"
android:layout_alignParentLeft="true"
android:layout_marginLeft="10dip"
android:text="@string/my_title"
android:textSize="30dip"
android:textStyle="bold"
android:textColor="#2E4C71"
android:gravity="center"/>
<Button
android:id="@+id/dolphinMinusButton"
android:layout_width="100dip"
android:layout_height="100dip"
android:layout_toRightOf="@+id/dolphinTitle"
android:layout_marginLeft="30dip"
android:text="@string/minus_button"
android:textSize="70dip"
android:textStyle="bold"
android:gravity="center"
android:layout_marginTop="1dip"
android:background="@drawable/button_blue_square_selector"
android:textColor="#FFFFFF"
android:onClick="onClick"/>
<TextView
android:id="@+id/dolphinValue"
android:layout_width="100dip"
android:layout_height="100dip"
android:layout_marginLeft="15dip"
android:background="@android:drawable/editbox_background"
android:layout_toRightOf="@+id/dolphinMinusButton"
android:text="0"
android:textColor="#2E4C71"
android:textSize="50dip"
android:gravity="center"
android:textStyle="bold"
android:inputType="none"/>
<Button
android:id="@+id/dolphinPlusButton"
android:layout_width="100dip"
android:layout_height="100dip"
android:layout_toRightOf="@+id/dolphinValue"
android:layout_marginLeft="15dip"
android:text="@string/plus_button"
android:textSize="70dip"
android:textStyle="bold"
android:gravity="center"
android:layout_marginTop="1dip"
android:background="@drawable/button_blue_square_selector"
android:textColor="#FFFFFF"
android:onClick="onClick"/>
</RelativeLayout>
By this:
<view class="com.example.MyQuantityBox"
android:id="@+id/dolphinBox"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:myCustomAttribute="@string/my_title"/>
So, I do not want a custom layout, I want a custom View (it should not be possible for this view to have child).
The only thing that could change from one instance of a MyQuantityBox to another is the title. I would very much like to be able to specify this in the XML (as I do on the last XML line)
How can I do this? Should I put the RelativeLayout in a XML file in /res/layout and inflate it in my MyBoxQuantity class? If yes how do I do so?
Thanks!
android xml view asked Dec 1 '10 at 20:34
nbarraillenbarraille
5,795125188
See "Compound Controls" in Android, and this link: stackoverflow.com/questions/1476371/…
– greg7gkb
Aug 9 '12 at 20:26
add a comment |
75
75
75
13
I am trying to create a custom View that would replace a certain layout that I use at multiple places, but I am struggling to do so.
Basically, I want to replace this:
<RelativeLayout
android:id="@+id/dolphinLine"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:background="@drawable/background_box_light_blue"
android:padding="10dip"
android:layout_margin="10dip">
<TextView
android:id="@+id/dolphinTitle"
android:layout_width="200dip"
android:layout_height="100dip"
android:layout_alignParentLeft="true"
android:layout_marginLeft="10dip"
android:text="@string/my_title"
android:textSize="30dip"
android:textStyle="bold"
android:textColor="#2E4C71"
android:gravity="center"/>
<Button
android:id="@+id/dolphinMinusButton"
android:layout_width="100dip"
android:layout_height="100dip"
android:layout_toRightOf="@+id/dolphinTitle"
android:layout_marginLeft="30dip"
android:text="@string/minus_button"
android:textSize="70dip"
android:textStyle="bold"
android:gravity="center"
android:layout_marginTop="1dip"
android:background="@drawable/button_blue_square_selector"
android:textColor="#FFFFFF"
android:onClick="onClick"/>
<TextView
android:id="@+id/dolphinValue"
android:layout_width="100dip"
android:layout_height="100dip"
android:layout_marginLeft="15dip"
android:background="@android:drawable/editbox_background"
android:layout_toRightOf="@+id/dolphinMinusButton"
android:text="0"
android:textColor="#2E4C71"
android:textSize="50dip"
android:gravity="center"
android:textStyle="bold"
android:inputType="none"/>
<Button
android:id="@+id/dolphinPlusButton"
android:layout_width="100dip"
android:layout_height="100dip"
android:layout_toRightOf="@+id/dolphinValue"
android:layout_marginLeft="15dip"
android:text="@string/plus_button"
android:textSize="70dip"
android:textStyle="bold"
android:gravity="center"
android:layout_marginTop="1dip"
android:background="@drawable/button_blue_square_selector"
android:textColor="#FFFFFF"
android:onClick="onClick"/>
</RelativeLayout>
By this:
<view class="com.example.MyQuantityBox"
android:id="@+id/dolphinBox"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:myCustomAttribute="@string/my_title"/>
So, I do not want a custom layout, I want a custom View (it should not be possible for this view to have child).
The only thing that could change from one instance of a MyQuantityBox to another is the title. I would very much like to be able to specify this in the XML (as I do on the last XML line)
How can I do this? Should I put the RelativeLayout in a XML file in /res/layout and inflate it in my MyBoxQuantity class? If yes how do I do so?
Thanks!
android xml view asked Dec 1 '10 at 20:34
nbarraillenbarraille
5,795125188
I am trying to create a custom View that would replace a certain layout that I use at multiple places, but I am struggling to do so.
Basically, I want to replace this:
<RelativeLayout
android:id="@+id/dolphinLine"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:background="@drawable/background_box_light_blue"
android:padding="10dip"
android:layout_margin="10dip">
<TextView
android:id="@+id/dolphinTitle"
android:layout_width="200dip"
android:layout_height="100dip"
android:layout_alignParentLeft="true"
android:layout_marginLeft="10dip"
android:text="@string/my_title"
android:textSize="30dip"
android:textStyle="bold"
android:textColor="#2E4C71"
android:gravity="center"/>
<Button
android:id="@+id/dolphinMinusButton"
android:layout_width="100dip"
android:layout_height="100dip"
android:layout_toRightOf="@+id/dolphinTitle"
android:layout_marginLeft="30dip"
android:text="@string/minus_button"
android:textSize="70dip"
android:textStyle="bold"
android:gravity="center"
android:layout_marginTop="1dip"
android:background="@drawable/button_blue_square_selector"
android:textColor="#FFFFFF"
android:onClick="onClick"/>
<TextView
android:id="@+id/dolphinValue"
android:layout_width="100dip"
android:layout_height="100dip"
android:layout_marginLeft="15dip"
android:background="@android:drawable/editbox_background"
android:layout_toRightOf="@+id/dolphinMinusButton"
android:text="0"
android:textColor="#2E4C71"
android:textSize="50dip"
android:gravity="center"
android:textStyle="bold"
android:inputType="none"/>
<Button
android:id="@+id/dolphinPlusButton"
android:layout_width="100dip"
android:layout_height="100dip"
android:layout_toRightOf="@+id/dolphinValue"
android:layout_marginLeft="15dip"
android:text="@string/plus_button"
android:textSize="70dip"
android:textStyle="bold"
android:gravity="center"
android:layout_marginTop="1dip"
android:background="@drawable/button_blue_square_selector"
android:textColor="#FFFFFF"
android:onClick="onClick"/>
</RelativeLayout>
By this:
<view class="com.example.MyQuantityBox"
android:id="@+id/dolphinBox"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:myCustomAttribute="@string/my_title"/>
So, I do not want a custom layout, I want a custom View (it should not be possible for this view to have child).
The only thing that could change from one instance of a MyQuantityBox to another is the title. I would very much like to be able to specify this in the XML (as I do on the last XML line)
How can I do this? Should I put the RelativeLayout in a XML file in /res/layout and inflate it in my MyBoxQuantity class? If yes how do I do so?
Thanks!
android xml view android xml view asked Dec 1 '10 at 20:34
nbarraillenbarraille
5,795125188
asked Dec 1 '10 at 20:34
nbarraillenbarraille
5,795125188
asked Dec 1 '10 at 20:34
nbarraillenbarraille
5,795125188
asked Dec 1 '10 at 20:34
nbarraillenbarraille
5,795125188
asked Dec 1 '10 at 20:34
nbarraillenbarraille
5,795125188
5,795125188
See "Compound Controls" in Android, and this link: stackoverflow.com/questions/1476371/…
– greg7gkb
Aug 9 '12 at 20:26
add a comment |
See "Compound Controls" in Android, and this link: stackoverflow.com/questions/1476371/…
– greg7gkb
Aug 9 '12 at 20:26
See "Compound Controls" in Android, and this link: stackoverflow.com/questions/1476371/…
– greg7gkb
Aug 9 '12 at 20:26
See "Compound Controls" in Android, and this link: stackoverflow.com/questions/1476371/…
– greg7gkb
Aug 9 '12 at 20:26
add a comment |
5 Answers
5
active
oldest
votes
23
Yes you can do this. RelativeLayout, LinearLayout, etc are Views so a custom layout is a custom view. Just something to consider because if you wanted to create a custom layout you could.
What you want to do is create a Compound Control. You'll create a subclass of RelativeLayout, add all our your components in code (TextView, etc), and in your constructor you can read the attributes passed in from the XML. You can then pass that attribute to your title TextView.
http://developer.android.com/guide/topics/ui/custom-components.html
answered Dec 1 '10 at 20:48
chubbsondubschubbsondubs
25.8k2289124
add a comment |
94
A bit old, but I thought sharing how I'd do it, based on chubbsondubs' answer:
I use FrameLayout (see Documentation), since it is used to contain a single view, and inflate into it the view from the xml.
Code following:
public class MyView extends FrameLayout {
public MyView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
initView();
}
public MyView(Context context, AttributeSet attrs) {
super(context, attrs);
initView();
}
public MyView(Context context) {
super(context);
initView();
}
private void initView() {
View view = inflate(getContext(), R.layout.my_view_layout, null);
addView(view);
}
}
answered Jul 1 '13 at 20:24
FoxFox
1,59511522
6
Since View class has static inflate() method there is no need for LayoutInflater.from()
– outlying
Jul 22 '13 at 14:22
thanks outlying, I've edited the code with your comment
– Fox
Dec 17 '13 at 19:00
1
Isn't this just the solution of Johannes from here: stackoverflow.com/questions/17836695/… Still, this inflates another layout within. So it's not really the best soltion I'd guess.
– Tobias Reich
Oct 18 '14 at 14:59
2
it is, but Johannes solution is from 7.24.13, and mind was from 7.1.13... Also, my solution uses FrameLayout which is supposed to contain only one View (as written in the doc referenced in the solution). So actually it is meant to be used as a placeholder for a View. I don't know any solution which doesn't invovle using a placeholder for the inflated View.
– Fox
Oct 18 '14 at 15:43
Maaaan, You Are COOL! You saved my brain!
– Стас Пишевский
Dec 1 '18 at 23:30
add a comment |
11
Use the layout inflater , as i shown below
public View myView(){
View v; // Creating an instance for View Object
LayoutInflater inflater = (LayoutInflater)getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.myview, null);
TextView text1 = (TextView) v.findViewById(R.id.dolphinTitle);
Button btn1 = (Button) v.findViewById(R.id.dolphinMinusButton);
TextView text2 = (TextView) v.findViewById(R.id. dolphinValue);
Button btn2 = (Button) v.findViewById(R.id. dolphinPlusButton);
return v;
}
edited Mar 11 '12 at 5:17
Sankar Ganesh
10.3k115085
answered Sep 10 '11 at 13:06
TsunazeTsunaze
1,05773477
I have tried same. its working fine. but, when i click btn1, it will calling web services and after received response from server, i want to update some text in particular position text2..any help pls ?
– harikrishnan
Feb 10 '18 at 10:12
add a comment |
6
In practice, I have found that you need to be a bit careful, especially if you are using a bit of xml repeatedly. Suppose, for example, that you have a table that you wish to create a table row for each entry in a list. You've set up some xml:
In my_table_row.xml:
<?xml version="1.0" encoding="utf-8"?>
<TableRow xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent" android:id="@+id/myTableRow">
<ImageButton android:src="@android:drawable/ic_menu_delete" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/rowButton"/>
<TextView android:layout_height="wrap_content" android:layout_width="wrap_content" android:textAppearance="?android:attr/textAppearanceMedium" android:text="TextView" android:id="@+id/rowText"></TextView>
</TableRow>
Then you want to create it once per row with some code. It assume that you have defined a parent TableLayout myTable to attach the Rows to.
for (int i=0; i<numRows; i++) {
/*
* 1. Make the row and attach it to myTable. For some reason this doesn't seem
* to return the TableRow as you might expect from the xml, so you need to
* receive the View it returns and then find the TableRow and other items, as
* per step 2.
*/
LayoutInflater inflater = (LayoutInflater)getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = inflater.inflate(R.layout.my_table_row, myTable, true);
// 2. Get all the things that we need to refer to to alter in any way.
TableRow tr = (TableRow) v.findViewById(R.id.profileTableRow);
ImageButton rowButton = (ImageButton) v.findViewById(R.id.rowButton);
TextView rowText = (TextView) v.findViewById(R.id.rowText);
// 3. Configure them out as you need to
rowText.setText("Text for this row");
rowButton.setId(i); // So that when it is clicked we know which one has been clicked!
rowButton.setOnClickListener(this); // See note below ...
/*
* To ensure that when finding views by id on the next time round this
* loop (or later) gie lots of spurious, unique, ids.
*/
rowText.setId(1000+i);
tr.setId(3000+i);
}
For a clear simple example on handling rowButton.setOnClickListener(this), see Onclicklistener for a programatically created button.
edited May 23 '17 at 12:02
Community♦
11
answered Mar 1 '12 at 11:25
Neil TownsendNeil Townsend
5,21842949
Hi Neil, I have tried same. its working fine. but, when i click rowButton, it will calling web services and after received response from server, i want to update some text in particular position rowText..any help pls ?
– harikrishnan
Feb 10 '18 at 10:00
see my question also. stackoverflow.com/questions/48719970/…
– harikrishnan
Feb 10 '18 at 10:58
add a comment |
2
Here is a simple demo to create customview (compoundview) by inflating from xml
attrs.xml
<resources>
<declare-styleable name="CustomView">
<attr format="string" name="text"/>
<attr format="reference" name="image"/>
</declare-styleable>
</resources>
CustomView.kt
class CustomView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0) :
ConstraintLayout(context, attrs, defStyleAttr) {
init {
init(attrs)
}
private fun init(attrs: AttributeSet?) {
View.inflate(context, R.layout.custom_layout, this)
val ta = context.obtainStyledAttributes(attrs, R.styleable.CustomView)
try {
val text = ta.getString(R.styleable.CustomView_text)
val drawableId = ta.getResourceId(R.styleable.CustomView_image, 0)
if (drawableId != 0) {
val drawable = AppCompatResources.getDrawable(context, drawableId)
image_thumb.setImageDrawable(drawable)
}
text_title.text = text
} finally {
ta.recycle()
}
}
}
custom_layout.xml
We should use merge here instead of ConstraintLayout because
If we use ConstraintLayout here, layout hierarchy will be ConstraintLayout->ConstraintLayout -> ImageView + TextView => we have 1 redundant ConstraintLayout => not very good for performance
<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:parentTag="android.support.constraint.ConstraintLayout">
<ImageView
android:id="@+id/image_thumb"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:ignore="ContentDescription"
tools:src="@mipmap/ic_launcher" />
<TextView
android:id="@+id/text_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="@id/image_thumb"
app:layout_constraintStart_toStartOf="@id/image_thumb"
app:layout_constraintTop_toBottomOf="@id/image_thumb"
tools:text="Text" />
</merge>
Using
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<your_package.CustomView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#f00"
app:image="@drawable/ic_android"
app:text="Android" />
<your_package.CustomView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#0f0"
app:image="@drawable/ic_adb"
app:text="ADB" />
</LinearLayout>
Result
Github demo
answered Jan 2 at 3:46
Phan Van LinhPhan Van Linh
21.8k11117142
add a comment |
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5 Answers
5
active
oldest
votes
5 Answers
5
active
oldest
votes
active
oldest
votes
active
oldest
votes
23
Yes you can do this. RelativeLayout, LinearLayout, etc are Views so a custom layout is a custom view. Just something to consider because if you wanted to create a custom layout you could.
What you want to do is create a Compound Control. You'll create a subclass of RelativeLayout, add all our your components in code (TextView, etc), and in your constructor you can read the attributes passed in from the XML. You can then pass that attribute to your title TextView.
http://developer.android.com/guide/topics/ui/custom-components.html
answered Dec 1 '10 at 20:48
chubbsondubschubbsondubs
25.8k2289124
add a comment |
23
Yes you can do this. RelativeLayout, LinearLayout, etc are Views so a custom layout is a custom view. Just something to consider because if you wanted to create a custom layout you could.
What you want to do is create a Compound Control. You'll create a subclass of RelativeLayout, add all our your components in code (TextView, etc), and in your constructor you can read the attributes passed in from the XML. You can then pass that attribute to your title TextView.
http://developer.android.com/guide/topics/ui/custom-components.html
answered Dec 1 '10 at 20:48
chubbsondubschubbsondubs
25.8k2289124
add a comment |
23
23
23
Yes you can do this. RelativeLayout, LinearLayout, etc are Views so a custom layout is a custom view. Just something to consider because if you wanted to create a custom layout you could.
What you want to do is create a Compound Control. You'll create a subclass of RelativeLayout, add all our your components in code (TextView, etc), and in your constructor you can read the attributes passed in from the XML. You can then pass that attribute to your title TextView.
http://developer.android.com/guide/topics/ui/custom-components.html
answered Dec 1 '10 at 20:48
chubbsondubschubbsondubs
25.8k2289124
Yes you can do this. RelativeLayout, LinearLayout, etc are Views so a custom layout is a custom view. Just something to consider because if you wanted to create a custom layout you could.
What you want to do is create a Compound Control. You'll create a subclass of RelativeLayout, add all our your components in code (TextView, etc), and in your constructor you can read the attributes passed in from the XML. You can then pass that attribute to your title TextView.
http://developer.android.com/guide/topics/ui/custom-components.html
answered Dec 1 '10 at 20:48
chubbsondubschubbsondubs
25.8k2289124
answered Dec 1 '10 at 20:48
chubbsondubschubbsondubs
25.8k2289124
answered Dec 1 '10 at 20:48
chubbsondubschubbsondubs
25.8k2289124
answered Dec 1 '10 at 20:48
chubbsondubschubbsondubs
25.8k2289124
25.8k2289124
add a comment |
add a comment |
94
A bit old, but I thought sharing how I'd do it, based on chubbsondubs' answer:
I use FrameLayout (see Documentation), since it is used to contain a single view, and inflate into it the view from the xml.
Code following:
public class MyView extends FrameLayout {
public MyView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
initView();
}
public MyView(Context context, AttributeSet attrs) {
super(context, attrs);
initView();
}
public MyView(Context context) {
super(context);
initView();
}
private void initView() {
View view = inflate(getContext(), R.layout.my_view_layout, null);
addView(view);
}
}
answered Jul 1 '13 at 20:24
FoxFox
1,59511522
6
Since View class has static inflate() method there is no need for LayoutInflater.from()
– outlying
Jul 22 '13 at 14:22
thanks outlying, I've edited the code with your comment
– Fox
Dec 17 '13 at 19:00
1
Isn't this just the solution of Johannes from here: stackoverflow.com/questions/17836695/… Still, this inflates another layout within. So it's not really the best soltion I'd guess.
– Tobias Reich
Oct 18 '14 at 14:59
2
it is, but Johannes solution is from 7.24.13, and mind was from 7.1.13... Also, my solution uses FrameLayout which is supposed to contain only one View (as written in the doc referenced in the solution). So actually it is meant to be used as a placeholder for a View. I don't know any solution which doesn't invovle using a placeholder for the inflated View.
– Fox
Oct 18 '14 at 15:43
Maaaan, You Are COOL! You saved my brain!
– Стас Пишевский
Dec 1 '18 at 23:30
add a comment |
94
A bit old, but I thought sharing how I'd do it, based on chubbsondubs' answer:
I use FrameLayout (see Documentation), since it is used to contain a single view, and inflate into it the view from the xml.
Code following:
public class MyView extends FrameLayout {
public MyView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
initView();
}
public MyView(Context context, AttributeSet attrs) {
super(context, attrs);
initView();
}
public MyView(Context context) {
super(context);
initView();
}
private void initView() {
View view = inflate(getContext(), R.layout.my_view_layout, null);
addView(view);
}
}
answered Jul 1 '13 at 20:24
FoxFox
1,59511522
6
Since View class has static inflate() method there is no need for LayoutInflater.from()
– outlying
Jul 22 '13 at 14:22
thanks outlying, I've edited the code with your comment
– Fox
Dec 17 '13 at 19:00
1
Isn't this just the solution of Johannes from here: stackoverflow.com/questions/17836695/… Still, this inflates another layout within. So it's not really the best soltion I'd guess.
– Tobias Reich
Oct 18 '14 at 14:59
2
it is, but Johannes solution is from 7.24.13, and mind was from 7.1.13... Also, my solution uses FrameLayout which is supposed to contain only one View (as written in the doc referenced in the solution). So actually it is meant to be used as a placeholder for a View. I don't know any solution which doesn't invovle using a placeholder for the inflated View.
– Fox
Oct 18 '14 at 15:43
Maaaan, You Are COOL! You saved my brain!
– Стас Пишевский
Dec 1 '18 at 23:30
add a comment |
94
94
94
A bit old, but I thought sharing how I'd do it, based on chubbsondubs' answer:
I use FrameLayout (see Documentation), since it is used to contain a single view, and inflate into it the view from the xml.
Code following:
public class MyView extends FrameLayout {
public MyView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
initView();
}
public MyView(Context context, AttributeSet attrs) {
super(context, attrs);
initView();
}
public MyView(Context context) {
super(context);
initView();
}
private void initView() {
View view = inflate(getContext(), R.layout.my_view_layout, null);
addView(view);
}
}
answered Jul 1 '13 at 20:24
FoxFox
1,59511522
A bit old, but I thought sharing how I'd do it, based on chubbsondubs' answer:
I use FrameLayout (see Documentation), since it is used to contain a single view, and inflate into it the view from the xml.
Code following:
public class MyView extends FrameLayout {
public MyView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
initView();
}
public MyView(Context context, AttributeSet attrs) {
super(context, attrs);
initView();
}
public MyView(Context context) {
super(context);
initView();
}
private void initView() {
View view = inflate(getContext(), R.layout.my_view_layout, null);
addView(view);
}
}
answered Jul 1 '13 at 20:24
FoxFox
1,59511522
edited Dec 17 '13 at 18:59
answered Jul 1 '13 at 20:24
FoxFox
1,59511522
answered Jul 1 '13 at 20:24
FoxFox
1,59511522
answered Jul 1 '13 at 20:24
FoxFox
1,59511522
1,59511522
6
Since View class has static inflate() method there is no need for LayoutInflater.from()
– outlying
Jul 22 '13 at 14:22
thanks outlying, I've edited the code with your comment
– Fox
Dec 17 '13 at 19:00
1
Isn't this just the solution of Johannes from here: stackoverflow.com/questions/17836695/… Still, this inflates another layout within. So it's not really the best soltion I'd guess.
– Tobias Reich
Oct 18 '14 at 14:59
2
it is, but Johannes solution is from 7.24.13, and mind was from 7.1.13... Also, my solution uses FrameLayout which is supposed to contain only one View (as written in the doc referenced in the solution). So actually it is meant to be used as a placeholder for a View. I don't know any solution which doesn't invovle using a placeholder for the inflated View.
– Fox
Oct 18 '14 at 15:43
Maaaan, You Are COOL! You saved my brain!
– Стас Пишевский
Dec 1 '18 at 23:30
add a comment |
6
Since View class has static inflate() method there is no need for LayoutInflater.from()
– outlying
Jul 22 '13 at 14:22
thanks outlying, I've edited the code with your comment
– Fox
Dec 17 '13 at 19:00
1
Isn't this just the solution of Johannes from here: stackoverflow.com/questions/17836695/… Still, this inflates another layout within. So it's not really the best soltion I'd guess.
– Tobias Reich
Oct 18 '14 at 14:59
2
it is, but Johannes solution is from 7.24.13, and mind was from 7.1.13... Also, my solution uses FrameLayout which is supposed to contain only one View (as written in the doc referenced in the solution). So actually it is meant to be used as a placeholder for a View. I don't know any solution which doesn't invovle using a placeholder for the inflated View.
– Fox
Oct 18 '14 at 15:43
Maaaan, You Are COOL! You saved my brain!
– Стас Пишевский
Dec 1 '18 at 23:30
6
6
Since View class has static inflate() method there is no need for LayoutInflater.from()
– outlying
Jul 22 '13 at 14:22
Since View class has static inflate() method there is no need for LayoutInflater.from()
– outlying
Jul 22 '13 at 14:22
thanks outlying, I've edited the code with your comment
– Fox
Dec 17 '13 at 19:00
thanks outlying, I've edited the code with your comment
– Fox
Dec 17 '13 at 19:00
1
1
Isn't this just the solution of Johannes from here: stackoverflow.com/questions/17836695/… Still, this inflates another layout within. So it's not really the best soltion I'd guess.
– Tobias Reich
Oct 18 '14 at 14:59
Isn't this just the solution of Johannes from here: stackoverflow.com/questions/17836695/… Still, this inflates another layout within. So it's not really the best soltion I'd guess.
– Tobias Reich
Oct 18 '14 at 14:59
2
2
it is, but Johannes solution is from 7.24.13, and mind was from 7.1.13... Also, my solution uses FrameLayout which is supposed to contain only one View (as written in the doc referenced in the solution). So actually it is meant to be used as a placeholder for a View. I don't know any solution which doesn't invovle using a placeholder for the inflated View.
– Fox
Oct 18 '14 at 15:43
it is, but Johannes solution is from 7.24.13, and mind was from 7.1.13... Also, my solution uses FrameLayout which is supposed to contain only one View (as written in the doc referenced in the solution). So actually it is meant to be used as a placeholder for a View. I don't know any solution which doesn't invovle using a placeholder for the inflated View.
– Fox
Oct 18 '14 at 15:43
Maaaan, You Are COOL! You saved my brain!
– Стас Пишевский
Dec 1 '18 at 23:30
Maaaan, You Are COOL! You saved my brain!
– Стас Пишевский
Dec 1 '18 at 23:30
add a comment |
11
Use the layout inflater , as i shown below
public View myView(){
View v; // Creating an instance for View Object
LayoutInflater inflater = (LayoutInflater)getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.myview, null);
TextView text1 = (TextView) v.findViewById(R.id.dolphinTitle);
Button btn1 = (Button) v.findViewById(R.id.dolphinMinusButton);
TextView text2 = (TextView) v.findViewById(R.id. dolphinValue);
Button btn2 = (Button) v.findViewById(R.id. dolphinPlusButton);
return v;
}
edited Mar 11 '12 at 5:17
Sankar Ganesh
10.3k115085
answered Sep 10 '11 at 13:06
TsunazeTsunaze
1,05773477
I have tried same. its working fine. but, when i click btn1, it will calling web services and after received response from server, i want to update some text in particular position text2..any help pls ?
– harikrishnan
Feb 10 '18 at 10:12
add a comment |
11
Use the layout inflater , as i shown below
public View myView(){
View v; // Creating an instance for View Object
LayoutInflater inflater = (LayoutInflater)getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.myview, null);
TextView text1 = (TextView) v.findViewById(R.id.dolphinTitle);
Button btn1 = (Button) v.findViewById(R.id.dolphinMinusButton);
TextView text2 = (TextView) v.findViewById(R.id. dolphinValue);
Button btn2 = (Button) v.findViewById(R.id. dolphinPlusButton);
return v;
}
edited Mar 11 '12 at 5:17
Sankar Ganesh
10.3k115085
answered Sep 10 '11 at 13:06
TsunazeTsunaze
1,05773477
I have tried same. its working fine. but, when i click btn1, it will calling web services and after received response from server, i want to update some text in particular position text2..any help pls ?
– harikrishnan
Feb 10 '18 at 10:12
add a comment |
11
11
11
Use the layout inflater , as i shown below
public View myView(){
View v; // Creating an instance for View Object
LayoutInflater inflater = (LayoutInflater)getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.myview, null);
TextView text1 = (TextView) v.findViewById(R.id.dolphinTitle);
Button btn1 = (Button) v.findViewById(R.id.dolphinMinusButton);
TextView text2 = (TextView) v.findViewById(R.id. dolphinValue);
Button btn2 = (Button) v.findViewById(R.id. dolphinPlusButton);
return v;
}
edited Mar 11 '12 at 5:17
Sankar Ganesh
10.3k115085
answered Sep 10 '11 at 13:06
TsunazeTsunaze
1,05773477
Use the layout inflater , as i shown below
public View myView(){
View v; // Creating an instance for View Object
LayoutInflater inflater = (LayoutInflater)getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.myview, null);
TextView text1 = (TextView) v.findViewById(R.id.dolphinTitle);
Button btn1 = (Button) v.findViewById(R.id.dolphinMinusButton);
TextView text2 = (TextView) v.findViewById(R.id. dolphinValue);
Button btn2 = (Button) v.findViewById(R.id. dolphinPlusButton);
return v;
}
edited Mar 11 '12 at 5:17
Sankar Ganesh
10.3k115085
answered Sep 10 '11 at 13:06
TsunazeTsunaze
1,05773477
edited Mar 11 '12 at 5:17
Sankar Ganesh
10.3k115085
edited Mar 11 '12 at 5:17
Sankar Ganesh
10.3k115085
edited Mar 11 '12 at 5:17
Sankar Ganesh
10.3k115085
10.3k115085
answered Sep 10 '11 at 13:06
TsunazeTsunaze
1,05773477
answered Sep 10 '11 at 13:06
TsunazeTsunaze
1,05773477
answered Sep 10 '11 at 13:06
TsunazeTsunaze
1,05773477
1,05773477
I have tried same. its working fine. but, when i click btn1, it will calling web services and after received response from server, i want to update some text in particular position text2..any help pls ?
– harikrishnan
Feb 10 '18 at 10:12
add a comment |
I have tried same. its working fine. but, when i click btn1, it will calling web services and after received response from server, i want to update some text in particular position text2..any help pls ?
– harikrishnan
Feb 10 '18 at 10:12
I have tried same. its working fine. but, when i click btn1, it will calling web services and after received response from server, i want to update some text in particular position text2..any help pls ?
– harikrishnan
Feb 10 '18 at 10:12
I have tried same. its working fine. but, when i click btn1, it will calling web services and after received response from server, i want to update some text in particular position text2..any help pls ?
– harikrishnan
Feb 10 '18 at 10:12
add a comment |
6
In practice, I have found that you need to be a bit careful, especially if you are using a bit of xml repeatedly. Suppose, for example, that you have a table that you wish to create a table row for each entry in a list. You've set up some xml:
In my_table_row.xml:
<?xml version="1.0" encoding="utf-8"?>
<TableRow xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent" android:id="@+id/myTableRow">
<ImageButton android:src="@android:drawable/ic_menu_delete" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/rowButton"/>
<TextView android:layout_height="wrap_content" android:layout_width="wrap_content" android:textAppearance="?android:attr/textAppearanceMedium" android:text="TextView" android:id="@+id/rowText"></TextView>
</TableRow>
Then you want to create it once per row with some code. It assume that you have defined a parent TableLayout myTable to attach the Rows to.
for (int i=0; i<numRows; i++) {
/*
* 1. Make the row and attach it to myTable. For some reason this doesn't seem
* to return the TableRow as you might expect from the xml, so you need to
* receive the View it returns and then find the TableRow and other items, as
* per step 2.
*/
LayoutInflater inflater = (LayoutInflater)getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = inflater.inflate(R.layout.my_table_row, myTable, true);
// 2. Get all the things that we need to refer to to alter in any way.
TableRow tr = (TableRow) v.findViewById(R.id.profileTableRow);
ImageButton rowButton = (ImageButton) v.findViewById(R.id.rowButton);
TextView rowText = (TextView) v.findViewById(R.id.rowText);
// 3. Configure them out as you need to
rowText.setText("Text for this row");
rowButton.setId(i); // So that when it is clicked we know which one has been clicked!
rowButton.setOnClickListener(this); // See note below ...
/*
* To ensure that when finding views by id on the next time round this
* loop (or later) gie lots of spurious, unique, ids.
*/
rowText.setId(1000+i);
tr.setId(3000+i);
}
For a clear simple example on handling rowButton.setOnClickListener(this), see Onclicklistener for a programatically created button.
edited May 23 '17 at 12:02
Community♦
11
answered Mar 1 '12 at 11:25
Neil TownsendNeil Townsend
5,21842949
Hi Neil, I have tried same. its working fine. but, when i click rowButton, it will calling web services and after received response from server, i want to update some text in particular position rowText..any help pls ?
– harikrishnan
Feb 10 '18 at 10:00
see my question also. stackoverflow.com/questions/48719970/…
– harikrishnan
Feb 10 '18 at 10:58
add a comment |
6
In practice, I have found that you need to be a bit careful, especially if you are using a bit of xml repeatedly. Suppose, for example, that you have a table that you wish to create a table row for each entry in a list. You've set up some xml:
In my_table_row.xml:
<?xml version="1.0" encoding="utf-8"?>
<TableRow xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent" android:id="@+id/myTableRow">
<ImageButton android:src="@android:drawable/ic_menu_delete" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/rowButton"/>
<TextView android:layout_height="wrap_content" android:layout_width="wrap_content" android:textAppearance="?android:attr/textAppearanceMedium" android:text="TextView" android:id="@+id/rowText"></TextView>
</TableRow>
Then you want to create it once per row with some code. It assume that you have defined a parent TableLayout myTable to attach the Rows to.
for (int i=0; i<numRows; i++) {
/*
* 1. Make the row and attach it to myTable. For some reason this doesn't seem
* to return the TableRow as you might expect from the xml, so you need to
* receive the View it returns and then find the TableRow and other items, as
* per step 2.
*/
LayoutInflater inflater = (LayoutInflater)getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = inflater.inflate(R.layout.my_table_row, myTable, true);
// 2. Get all the things that we need to refer to to alter in any way.
TableRow tr = (TableRow) v.findViewById(R.id.profileTableRow);
ImageButton rowButton = (ImageButton) v.findViewById(R.id.rowButton);
TextView rowText = (TextView) v.findViewById(R.id.rowText);
// 3. Configure them out as you need to
rowText.setText("Text for this row");
rowButton.setId(i); // So that when it is clicked we know which one has been clicked!
rowButton.setOnClickListener(this); // See note below ...
/*
* To ensure that when finding views by id on the next time round this
* loop (or later) gie lots of spurious, unique, ids.
*/
rowText.setId(1000+i);
tr.setId(3000+i);
}
For a clear simple example on handling rowButton.setOnClickListener(this), see Onclicklistener for a programatically created button.
edited May 23 '17 at 12:02
Community♦
11
answered Mar 1 '12 at 11:25
Neil TownsendNeil Townsend
5,21842949
Hi Neil, I have tried same. its working fine. but, when i click rowButton, it will calling web services and after received response from server, i want to update some text in particular position rowText..any help pls ?
– harikrishnan
Feb 10 '18 at 10:00
see my question also. stackoverflow.com/questions/48719970/…
– harikrishnan
Feb 10 '18 at 10:58
add a comment |
6
6
6
In practice, I have found that you need to be a bit careful, especially if you are using a bit of xml repeatedly. Suppose, for example, that you have a table that you wish to create a table row for each entry in a list. You've set up some xml:
In my_table_row.xml:
<?xml version="1.0" encoding="utf-8"?>
<TableRow xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent" android:id="@+id/myTableRow">
<ImageButton android:src="@android:drawable/ic_menu_delete" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/rowButton"/>
<TextView android:layout_height="wrap_content" android:layout_width="wrap_content" android:textAppearance="?android:attr/textAppearanceMedium" android:text="TextView" android:id="@+id/rowText"></TextView>
</TableRow>
Then you want to create it once per row with some code. It assume that you have defined a parent TableLayout myTable to attach the Rows to.
for (int i=0; i<numRows; i++) {
/*
* 1. Make the row and attach it to myTable. For some reason this doesn't seem
* to return the TableRow as you might expect from the xml, so you need to
* receive the View it returns and then find the TableRow and other items, as
* per step 2.
*/
LayoutInflater inflater = (LayoutInflater)getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = inflater.inflate(R.layout.my_table_row, myTable, true);
// 2. Get all the things that we need to refer to to alter in any way.
TableRow tr = (TableRow) v.findViewById(R.id.profileTableRow);
ImageButton rowButton = (ImageButton) v.findViewById(R.id.rowButton);
TextView rowText = (TextView) v.findViewById(R.id.rowText);
// 3. Configure them out as you need to
rowText.setText("Text for this row");
rowButton.setId(i); // So that when it is clicked we know which one has been clicked!
rowButton.setOnClickListener(this); // See note below ...
/*
* To ensure that when finding views by id on the next time round this
* loop (or later) gie lots of spurious, unique, ids.
*/
rowText.setId(1000+i);
tr.setId(3000+i);
}
For a clear simple example on handling rowButton.setOnClickListener(this), see Onclicklistener for a programatically created button.
edited May 23 '17 at 12:02
Community♦
11
answered Mar 1 '12 at 11:25
Neil TownsendNeil Townsend
5,21842949
In practice, I have found that you need to be a bit careful, especially if you are using a bit of xml repeatedly. Suppose, for example, that you have a table that you wish to create a table row for each entry in a list. You've set up some xml:
In my_table_row.xml:
<?xml version="1.0" encoding="utf-8"?>
<TableRow xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent" android:id="@+id/myTableRow">
<ImageButton android:src="@android:drawable/ic_menu_delete" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/rowButton"/>
<TextView android:layout_height="wrap_content" android:layout_width="wrap_content" android:textAppearance="?android:attr/textAppearanceMedium" android:text="TextView" android:id="@+id/rowText"></TextView>
</TableRow>
Then you want to create it once per row with some code. It assume that you have defined a parent TableLayout myTable to attach the Rows to.
for (int i=0; i<numRows; i++) {
/*
* 1. Make the row and attach it to myTable. For some reason this doesn't seem
* to return the TableRow as you might expect from the xml, so you need to
* receive the View it returns and then find the TableRow and other items, as
* per step 2.
*/
LayoutInflater inflater = (LayoutInflater)getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = inflater.inflate(R.layout.my_table_row, myTable, true);
// 2. Get all the things that we need to refer to to alter in any way.
TableRow tr = (TableRow) v.findViewById(R.id.profileTableRow);
ImageButton rowButton = (ImageButton) v.findViewById(R.id.rowButton);
TextView rowText = (TextView) v.findViewById(R.id.rowText);
// 3. Configure them out as you need to
rowText.setText("Text for this row");
rowButton.setId(i); // So that when it is clicked we know which one has been clicked!
rowButton.setOnClickListener(this); // See note below ...
/*
* To ensure that when finding views by id on the next time round this
* loop (or later) gie lots of spurious, unique, ids.
*/
rowText.setId(1000+i);
tr.setId(3000+i);
}
For a clear simple example on handling rowButton.setOnClickListener(this), see Onclicklistener for a programatically created button.
edited May 23 '17 at 12:02
Community♦
11
answered Mar 1 '12 at 11:25
Neil TownsendNeil Townsend
5,21842949
edited May 23 '17 at 12:02
Community♦
11
edited May 23 '17 at 12:02
Community♦
11
edited May 23 '17 at 12:02
Community♦
11
11
answered Mar 1 '12 at 11:25
Neil TownsendNeil Townsend
5,21842949
answered Mar 1 '12 at 11:25
Neil TownsendNeil Townsend
5,21842949
answered Mar 1 '12 at 11:25
Neil TownsendNeil Townsend
5,21842949
5,21842949
Hi Neil, I have tried same. its working fine. but, when i click rowButton, it will calling web services and after received response from server, i want to update some text in particular position rowText..any help pls ?
– harikrishnan
Feb 10 '18 at 10:00
see my question also. stackoverflow.com/questions/48719970/…
– harikrishnan
Feb 10 '18 at 10:58
add a comment |
Hi Neil, I have tried same. its working fine. but, when i click rowButton, it will calling web services and after received response from server, i want to update some text in particular position rowText..any help pls ?
– harikrishnan
Feb 10 '18 at 10:00
see my question also. stackoverflow.com/questions/48719970/…
– harikrishnan
Feb 10 '18 at 10:58
Hi Neil, I have tried same. its working fine. but, when i click rowButton, it will calling web services and after received response from server, i want to update some text in particular position rowText..any help pls ?
– harikrishnan
Feb 10 '18 at 10:00
Hi Neil, I have tried same. its working fine. but, when i click rowButton, it will calling web services and after received response from server, i want to update some text in particular position rowText..any help pls ?
– harikrishnan
Feb 10 '18 at 10:00
see my question also. stackoverflow.com/questions/48719970/…
– harikrishnan
Feb 10 '18 at 10:58
see my question also. stackoverflow.com/questions/48719970/…
– harikrishnan
Feb 10 '18 at 10:58
add a comment |
2
Here is a simple demo to create customview (compoundview) by inflating from xml
attrs.xml
<resources>
<declare-styleable name="CustomView">
<attr format="string" name="text"/>
<attr format="reference" name="image"/>
</declare-styleable>
</resources>
CustomView.kt
class CustomView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0) :
ConstraintLayout(context, attrs, defStyleAttr) {
init {
init(attrs)
}
private fun init(attrs: AttributeSet?) {
View.inflate(context, R.layout.custom_layout, this)
val ta = context.obtainStyledAttributes(attrs, R.styleable.CustomView)
try {
val text = ta.getString(R.styleable.CustomView_text)
val drawableId = ta.getResourceId(R.styleable.CustomView_image, 0)
if (drawableId != 0) {
val drawable = AppCompatResources.getDrawable(context, drawableId)
image_thumb.setImageDrawable(drawable)
}
text_title.text = text
} finally {
ta.recycle()
}
}
}
custom_layout.xml
We should use merge here instead of ConstraintLayout because
If we use ConstraintLayout here, layout hierarchy will be ConstraintLayout->ConstraintLayout -> ImageView + TextView => we have 1 redundant ConstraintLayout => not very good for performance
<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:parentTag="android.support.constraint.ConstraintLayout">
<ImageView
android:id="@+id/image_thumb"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:ignore="ContentDescription"
tools:src="@mipmap/ic_launcher" />
<TextView
android:id="@+id/text_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="@id/image_thumb"
app:layout_constraintStart_toStartOf="@id/image_thumb"
app:layout_constraintTop_toBottomOf="@id/image_thumb"
tools:text="Text" />
</merge>
Using
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<your_package.CustomView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#f00"
app:image="@drawable/ic_android"
app:text="Android" />
<your_package.CustomView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#0f0"
app:image="@drawable/ic_adb"
app:text="ADB" />
</LinearLayout>
Result
Github demo
answered Jan 2 at 3:46
Phan Van LinhPhan Van Linh
21.8k11117142
add a comment |
2
Here is a simple demo to create customview (compoundview) by inflating from xml
attrs.xml
<resources>
<declare-styleable name="CustomView">
<attr format="string" name="text"/>
<attr format="reference" name="image"/>
</declare-styleable>
</resources>
CustomView.kt
class CustomView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0) :
ConstraintLayout(context, attrs, defStyleAttr) {
init {
init(attrs)
}
private fun init(attrs: AttributeSet?) {
View.inflate(context, R.layout.custom_layout, this)
val ta = context.obtainStyledAttributes(attrs, R.styleable.CustomView)
try {
val text = ta.getString(R.styleable.CustomView_text)
val drawableId = ta.getResourceId(R.styleable.CustomView_image, 0)
if (drawableId != 0) {
val drawable = AppCompatResources.getDrawable(context, drawableId)
image_thumb.setImageDrawable(drawable)
}
text_title.text = text
} finally {
ta.recycle()
}
}
}
custom_layout.xml
We should use merge here instead of ConstraintLayout because
If we use ConstraintLayout here, layout hierarchy will be ConstraintLayout->ConstraintLayout -> ImageView + TextView => we have 1 redundant ConstraintLayout => not very good for performance
<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:parentTag="android.support.constraint.ConstraintLayout">
<ImageView
android:id="@+id/image_thumb"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:ignore="ContentDescription"
tools:src="@mipmap/ic_launcher" />
<TextView
android:id="@+id/text_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="@id/image_thumb"
app:layout_constraintStart_toStartOf="@id/image_thumb"
app:layout_constraintTop_toBottomOf="@id/image_thumb"
tools:text="Text" />
</merge>
Using
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<your_package.CustomView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#f00"
app:image="@drawable/ic_android"
app:text="Android" />
<your_package.CustomView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#0f0"
app:image="@drawable/ic_adb"
app:text="ADB" />
</LinearLayout>
Result
Github demo
answered Jan 2 at 3:46
Phan Van LinhPhan Van Linh
21.8k11117142
add a comment |
2
2
2
Here is a simple demo to create customview (compoundview) by inflating from xml
attrs.xml
<resources>
<declare-styleable name="CustomView">
<attr format="string" name="text"/>
<attr format="reference" name="image"/>
</declare-styleable>
</resources>
CustomView.kt
class CustomView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0) :
ConstraintLayout(context, attrs, defStyleAttr) {
init {
init(attrs)
}
private fun init(attrs: AttributeSet?) {
View.inflate(context, R.layout.custom_layout, this)
val ta = context.obtainStyledAttributes(attrs, R.styleable.CustomView)
try {
val text = ta.getString(R.styleable.CustomView_text)
val drawableId = ta.getResourceId(R.styleable.CustomView_image, 0)
if (drawableId != 0) {
val drawable = AppCompatResources.getDrawable(context, drawableId)
image_thumb.setImageDrawable(drawable)
}
text_title.text = text
} finally {
ta.recycle()
}
}
}
custom_layout.xml
We should use merge here instead of ConstraintLayout because
If we use ConstraintLayout here, layout hierarchy will be ConstraintLayout->ConstraintLayout -> ImageView + TextView => we have 1 redundant ConstraintLayout => not very good for performance
<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:parentTag="android.support.constraint.ConstraintLayout">
<ImageView
android:id="@+id/image_thumb"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:ignore="ContentDescription"
tools:src="@mipmap/ic_launcher" />
<TextView
android:id="@+id/text_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="@id/image_thumb"
app:layout_constraintStart_toStartOf="@id/image_thumb"
app:layout_constraintTop_toBottomOf="@id/image_thumb"
tools:text="Text" />
</merge>
Using
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<your_package.CustomView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#f00"
app:image="@drawable/ic_android"
app:text="Android" />
<your_package.CustomView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#0f0"
app:image="@drawable/ic_adb"
app:text="ADB" />
</LinearLayout>
Result
Github demo
answered Jan 2 at 3:46
Phan Van LinhPhan Van Linh
21.8k11117142
Here is a simple demo to create customview (compoundview) by inflating from xml
attrs.xml
<resources>
<declare-styleable name="CustomView">
<attr format="string" name="text"/>
<attr format="reference" name="image"/>
</declare-styleable>
</resources>
CustomView.kt
class CustomView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0) :
ConstraintLayout(context, attrs, defStyleAttr) {
init {
init(attrs)
}
private fun init(attrs: AttributeSet?) {
View.inflate(context, R.layout.custom_layout, this)
val ta = context.obtainStyledAttributes(attrs, R.styleable.CustomView)
try {
val text = ta.getString(R.styleable.CustomView_text)
val drawableId = ta.getResourceId(R.styleable.CustomView_image, 0)
if (drawableId != 0) {
val drawable = AppCompatResources.getDrawable(context, drawableId)
image_thumb.setImageDrawable(drawable)
}
text_title.text = text
} finally {
ta.recycle()
}
}
}
custom_layout.xml
We should use merge here instead of ConstraintLayout because
If we use ConstraintLayout here, layout hierarchy will be ConstraintLayout->ConstraintLayout -> ImageView + TextView => we have 1 redundant ConstraintLayout => not very good for performance
<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:parentTag="android.support.constraint.ConstraintLayout">
<ImageView
android:id="@+id/image_thumb"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:ignore="ContentDescription"
tools:src="@mipmap/ic_launcher" />
<TextView
android:id="@+id/text_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="@id/image_thumb"
app:layout_constraintStart_toStartOf="@id/image_thumb"
app:layout_constraintTop_toBottomOf="@id/image_thumb"
tools:text="Text" />
</merge>
Using
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<your_package.CustomView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#f00"
app:image="@drawable/ic_android"
app:text="Android" />
<your_package.CustomView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#0f0"
app:image="@drawable/ic_adb"
app:text="ADB" />
</LinearLayout>
Result
Github demo
answered Jan 2 at 3:46
Phan Van LinhPhan Van Linh
21.8k11117142
answered Jan 2 at 3:46
Phan Van LinhPhan Van Linh
21.8k11117142
answered Jan 2 at 3:46
Phan Van LinhPhan Van Linh
21.8k11117142
answered Jan 2 at 3:46
Phan Van LinhPhan Van Linh
21.8k11117142
21.8k11117142
add a comment |
add a comment |
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See "Compound Controls" in Android, and this link: stackoverflow.com/questions/1476371/…
– greg7gkb
Aug 9 '12 at 20:26