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Drawing a circle on ImageView2 in same coordinates as ImageView1 if i tap a place in ImageView1 and Vice...
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I'm trying to make find the difference game app, but I never made anything like that and since I'm a new to development I'm stuck
well baby Steps are always needed to learn xD
I read in some documentation that i have to get each ImageView height and width separately so when i touch imageView1 its coordinates can be set to ImageVIew2 and ViceVersa I MAYBE BE WRONG XD
Right now I have a layout with 2 Images set vertically
<RelativeLayout
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"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".PlayActivity"
android:id="@+id/hello1">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="@+id/hello">
<ImageView
android:id="@+id/image1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@drawable/pic_9" />
<ImageView
android:id="@+id/image2"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@drawable/pic_9a" />
</LinearLayout>
What i want to do is if i tap a place in image1 a circle should be created on the same place in image2
after reading along a few things i have made a circle if i tap the layout but i am stuck after this i cant find what to do next maybe i cant find documentation related to my problems
public class PlayActivity extends AppCompatActivity {
RelativeLayout layout;
float x = 0;
float y = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_play);
layout=(RelativeLayout) findViewById(R.id.hello1);
layout.addView(new CustomView(PlayActivity.this));
}
public class CustomView extends View {
Bitmap mBitmap;
Paint paint;
public CustomView(Context context) {
super(context);
mBitmap = Bitmap.createBitmap(400, 800, Bitmap.Config.ARGB_8888);
paint = new Paint();
paint.setColor(Color.RED);
paint.setStyle(Paint.Style.FILL);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawCircle(x, y, 50, paint);
}
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
x = event.getX();
y = event.getY();
invalidate();
}
return false;
}
}}
Right now i think my two ImageView arent separate because when i touch between the 2 images a circle is created which shouldn't since imageView1 ends im not sure if im thinking in right direction its just my guess on how should it work for the game to work I MAYBE BE WRONG XD
I still have a long way to go, but I'm stuck here
can anyone help?
I replaced my PlayActivity code using Tejas Pandya
RelativeLayout layout;
float x = 0;
float y = 0;
ImageView ImageView1, ImageView2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_play);
layout=(RelativeLayout) findViewById(R.id.hello1);
layout.addView(new CustomView(PlayActivity.this));
ImageView1 = (ImageView) findViewById(R.id.image1);
ImageView2 = (ImageView) findViewById(R.id.image2);
}
public class CustomView extends View {
public CustomView(Context context) {
super(context);
}
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
x = event.getX();
y = event.getY();
invalidate();
drawCircle(R.id.image2,ImageView2,x,y);
}
return false;
}
public void drawCircle(int my_image_id, ImageView my_imageview, float x , float y){
BitmapFactory.Options myOptions = new BitmapFactory.Options();
myOptions.inDither = true;
myOptions.inScaled = false;
myOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;// important
myOptions.inPurgeable = true;
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), my_image_id,myOptions);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setColor(Color.BLUE);
Bitmap workingBitmap = Bitmap.createBitmap(bitmap);
Bitmap mutableBitmap = workingBitmap.copy(Bitmap.Config.ARGB_8888, true);
Canvas canvas = new Canvas(mutableBitmap);
canvas.drawCircle(x, y, 25, paint);
my_imageview.setAdjustViewBounds(true);
my_imageview.setImageBitmap(mutableBitmap);
}
}
and i get this error
E/MessageQueue-JNI: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.graphics.Bitmap.getWidth()' on a null object reference
at android.graphics.Bitmap.createBitmap(Bitmap.java:742)
at com.example.pc.blazedifferencegame.PlayActivity$CustomView.drawCircle(PlayActivity.java:68)
at com.example.pc.blazedifferencegame.PlayActivity$CustomView.onTouchEvent(PlayActivity.java:49)
android edited Jan 8 at 9:09
Md. Zakir Hossain
586416
asked Jan 3 at 10:56
Ahsan razaAhsan raza
237
add a comment |
I'm trying to make find the difference game app, but I never made anything like that and since I'm a new to development I'm stuck
well baby Steps are always needed to learn xD
I read in some documentation that i have to get each ImageView height and width separately so when i touch imageView1 its coordinates can be set to ImageVIew2 and ViceVersa I MAYBE BE WRONG XD
Right now I have a layout with 2 Images set vertically
<RelativeLayout
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"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".PlayActivity"
android:id="@+id/hello1">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="@+id/hello">
<ImageView
android:id="@+id/image1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@drawable/pic_9" />
<ImageView
android:id="@+id/image2"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@drawable/pic_9a" />
</LinearLayout>
What i want to do is if i tap a place in image1 a circle should be created on the same place in image2
after reading along a few things i have made a circle if i tap the layout but i am stuck after this i cant find what to do next maybe i cant find documentation related to my problems
public class PlayActivity extends AppCompatActivity {
RelativeLayout layout;
float x = 0;
float y = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_play);
layout=(RelativeLayout) findViewById(R.id.hello1);
layout.addView(new CustomView(PlayActivity.this));
}
public class CustomView extends View {
Bitmap mBitmap;
Paint paint;
public CustomView(Context context) {
super(context);
mBitmap = Bitmap.createBitmap(400, 800, Bitmap.Config.ARGB_8888);
paint = new Paint();
paint.setColor(Color.RED);
paint.setStyle(Paint.Style.FILL);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawCircle(x, y, 50, paint);
}
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
x = event.getX();
y = event.getY();
invalidate();
}
return false;
}
}}
Right now i think my two ImageView arent separate because when i touch between the 2 images a circle is created which shouldn't since imageView1 ends im not sure if im thinking in right direction its just my guess on how should it work for the game to work I MAYBE BE WRONG XD
I still have a long way to go, but I'm stuck here
can anyone help?
I replaced my PlayActivity code using Tejas Pandya
RelativeLayout layout;
float x = 0;
float y = 0;
ImageView ImageView1, ImageView2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_play);
layout=(RelativeLayout) findViewById(R.id.hello1);
layout.addView(new CustomView(PlayActivity.this));
ImageView1 = (ImageView) findViewById(R.id.image1);
ImageView2 = (ImageView) findViewById(R.id.image2);
}
public class CustomView extends View {
public CustomView(Context context) {
super(context);
}
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
x = event.getX();
y = event.getY();
invalidate();
drawCircle(R.id.image2,ImageView2,x,y);
}
return false;
}
public void drawCircle(int my_image_id, ImageView my_imageview, float x , float y){
BitmapFactory.Options myOptions = new BitmapFactory.Options();
myOptions.inDither = true;
myOptions.inScaled = false;
myOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;// important
myOptions.inPurgeable = true;
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), my_image_id,myOptions);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setColor(Color.BLUE);
Bitmap workingBitmap = Bitmap.createBitmap(bitmap);
Bitmap mutableBitmap = workingBitmap.copy(Bitmap.Config.ARGB_8888, true);
Canvas canvas = new Canvas(mutableBitmap);
canvas.drawCircle(x, y, 25, paint);
my_imageview.setAdjustViewBounds(true);
my_imageview.setImageBitmap(mutableBitmap);
}
}
and i get this error
E/MessageQueue-JNI: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.graphics.Bitmap.getWidth()' on a null object reference
at android.graphics.Bitmap.createBitmap(Bitmap.java:742)
at com.example.pc.blazedifferencegame.PlayActivity$CustomView.drawCircle(PlayActivity.java:68)
at com.example.pc.blazedifferencegame.PlayActivity$CustomView.onTouchEvent(PlayActivity.java:49)
android edited Jan 8 at 9:09
Md. Zakir Hossain
586416
asked Jan 3 at 10:56
Ahsan razaAhsan raza
237
add a comment |
I'm trying to make find the difference game app, but I never made anything like that and since I'm a new to development I'm stuck
well baby Steps are always needed to learn xD
I read in some documentation that i have to get each ImageView height and width separately so when i touch imageView1 its coordinates can be set to ImageVIew2 and ViceVersa I MAYBE BE WRONG XD
Right now I have a layout with 2 Images set vertically
<RelativeLayout
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"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".PlayActivity"
android:id="@+id/hello1">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="@+id/hello">
<ImageView
android:id="@+id/image1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@drawable/pic_9" />
<ImageView
android:id="@+id/image2"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@drawable/pic_9a" />
</LinearLayout>
What i want to do is if i tap a place in image1 a circle should be created on the same place in image2
after reading along a few things i have made a circle if i tap the layout but i am stuck after this i cant find what to do next maybe i cant find documentation related to my problems
public class PlayActivity extends AppCompatActivity {
RelativeLayout layout;
float x = 0;
float y = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_play);
layout=(RelativeLayout) findViewById(R.id.hello1);
layout.addView(new CustomView(PlayActivity.this));
}
public class CustomView extends View {
Bitmap mBitmap;
Paint paint;
public CustomView(Context context) {
super(context);
mBitmap = Bitmap.createBitmap(400, 800, Bitmap.Config.ARGB_8888);
paint = new Paint();
paint.setColor(Color.RED);
paint.setStyle(Paint.Style.FILL);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawCircle(x, y, 50, paint);
}
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
x = event.getX();
y = event.getY();
invalidate();
}
return false;
}
}}
Right now i think my two ImageView arent separate because when i touch between the 2 images a circle is created which shouldn't since imageView1 ends im not sure if im thinking in right direction its just my guess on how should it work for the game to work I MAYBE BE WRONG XD
I still have a long way to go, but I'm stuck here
can anyone help?
I replaced my PlayActivity code using Tejas Pandya
RelativeLayout layout;
float x = 0;
float y = 0;
ImageView ImageView1, ImageView2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_play);
layout=(RelativeLayout) findViewById(R.id.hello1);
layout.addView(new CustomView(PlayActivity.this));
ImageView1 = (ImageView) findViewById(R.id.image1);
ImageView2 = (ImageView) findViewById(R.id.image2);
}
public class CustomView extends View {
public CustomView(Context context) {
super(context);
}
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
x = event.getX();
y = event.getY();
invalidate();
drawCircle(R.id.image2,ImageView2,x,y);
}
return false;
}
public void drawCircle(int my_image_id, ImageView my_imageview, float x , float y){
BitmapFactory.Options myOptions = new BitmapFactory.Options();
myOptions.inDither = true;
myOptions.inScaled = false;
myOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;// important
myOptions.inPurgeable = true;
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), my_image_id,myOptions);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setColor(Color.BLUE);
Bitmap workingBitmap = Bitmap.createBitmap(bitmap);
Bitmap mutableBitmap = workingBitmap.copy(Bitmap.Config.ARGB_8888, true);
Canvas canvas = new Canvas(mutableBitmap);
canvas.drawCircle(x, y, 25, paint);
my_imageview.setAdjustViewBounds(true);
my_imageview.setImageBitmap(mutableBitmap);
}
}
and i get this error
E/MessageQueue-JNI: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.graphics.Bitmap.getWidth()' on a null object reference
at android.graphics.Bitmap.createBitmap(Bitmap.java:742)
at com.example.pc.blazedifferencegame.PlayActivity$CustomView.drawCircle(PlayActivity.java:68)
at com.example.pc.blazedifferencegame.PlayActivity$CustomView.onTouchEvent(PlayActivity.java:49)
android edited Jan 8 at 9:09
Md. Zakir Hossain
586416
asked Jan 3 at 10:56
Ahsan razaAhsan raza
237
I'm trying to make find the difference game app, but I never made anything like that and since I'm a new to development I'm stuck
well baby Steps are always needed to learn xD
I read in some documentation that i have to get each ImageView height and width separately so when i touch imageView1 its coordinates can be set to ImageVIew2 and ViceVersa I MAYBE BE WRONG XD
Right now I have a layout with 2 Images set vertically
<RelativeLayout
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"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".PlayActivity"
android:id="@+id/hello1">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="@+id/hello">
<ImageView
android:id="@+id/image1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@drawable/pic_9" />
<ImageView
android:id="@+id/image2"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@drawable/pic_9a" />
</LinearLayout>
What i want to do is if i tap a place in image1 a circle should be created on the same place in image2
after reading along a few things i have made a circle if i tap the layout but i am stuck after this i cant find what to do next maybe i cant find documentation related to my problems
public class PlayActivity extends AppCompatActivity {
RelativeLayout layout;
float x = 0;
float y = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_play);
layout=(RelativeLayout) findViewById(R.id.hello1);
layout.addView(new CustomView(PlayActivity.this));
}
public class CustomView extends View {
Bitmap mBitmap;
Paint paint;
public CustomView(Context context) {
super(context);
mBitmap = Bitmap.createBitmap(400, 800, Bitmap.Config.ARGB_8888);
paint = new Paint();
paint.setColor(Color.RED);
paint.setStyle(Paint.Style.FILL);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawCircle(x, y, 50, paint);
}
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
x = event.getX();
y = event.getY();
invalidate();
}
return false;
}
}}
Right now i think my two ImageView arent separate because when i touch between the 2 images a circle is created which shouldn't since imageView1 ends im not sure if im thinking in right direction its just my guess on how should it work for the game to work I MAYBE BE WRONG XD
I still have a long way to go, but I'm stuck here
can anyone help?
I replaced my PlayActivity code using Tejas Pandya
RelativeLayout layout;
float x = 0;
float y = 0;
ImageView ImageView1, ImageView2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_play);
layout=(RelativeLayout) findViewById(R.id.hello1);
layout.addView(new CustomView(PlayActivity.this));
ImageView1 = (ImageView) findViewById(R.id.image1);
ImageView2 = (ImageView) findViewById(R.id.image2);
}
public class CustomView extends View {
public CustomView(Context context) {
super(context);
}
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
x = event.getX();
y = event.getY();
invalidate();
drawCircle(R.id.image2,ImageView2,x,y);
}
return false;
}
public void drawCircle(int my_image_id, ImageView my_imageview, float x , float y){
BitmapFactory.Options myOptions = new BitmapFactory.Options();
myOptions.inDither = true;
myOptions.inScaled = false;
myOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;// important
myOptions.inPurgeable = true;
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), my_image_id,myOptions);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setColor(Color.BLUE);
Bitmap workingBitmap = Bitmap.createBitmap(bitmap);
Bitmap mutableBitmap = workingBitmap.copy(Bitmap.Config.ARGB_8888, true);
Canvas canvas = new Canvas(mutableBitmap);
canvas.drawCircle(x, y, 25, paint);
my_imageview.setAdjustViewBounds(true);
my_imageview.setImageBitmap(mutableBitmap);
}
}
and i get this error
E/MessageQueue-JNI: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.graphics.Bitmap.getWidth()' on a null object reference
at android.graphics.Bitmap.createBitmap(Bitmap.java:742)
at com.example.pc.blazedifferencegame.PlayActivity$CustomView.drawCircle(PlayActivity.java:68)
at com.example.pc.blazedifferencegame.PlayActivity$CustomView.onTouchEvent(PlayActivity.java:49)
android android edited Jan 8 at 9:09
Md. Zakir Hossain
586416
asked Jan 3 at 10:56
Ahsan razaAhsan raza
237
edited Jan 8 at 9:09
Md. Zakir Hossain
586416
asked Jan 3 at 10:56
Ahsan razaAhsan raza
237
edited Jan 8 at 9:09
Md. Zakir Hossain
586416
edited Jan 8 at 9:09
Md. Zakir Hossain
586416
edited Jan 8 at 9:09
Md. Zakir Hossain
586416
586416
asked Jan 3 at 10:56
Ahsan razaAhsan raza
237
asked Jan 3 at 10:56
Ahsan razaAhsan raza
237
asked Jan 3 at 10:56
Ahsan razaAhsan raza
237
237
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
When You tape on Image . You are getting x,y coordinate in
x = event.getX();
y = event.getY();
Now you have x,y coordinate . call your drawCircle() method on both of your imageview with this same x,y coordinate.
For Drawing circle :
make one function drawCircle();
public void drawCircle(int my_image_id,Imageview my_imageview,int x ,int y){
BitmapFactory.Options myOptions = new BitmapFactory.Options();
myOptions.inDither = true;
myOptions.inScaled = false;
myOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;// important
myOptions.inPurgeable = true;
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), my_image_id,myOptions);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setColor(Color.BLUE);
//please check here . you've got your bitmap or it is null.
// if it is null,there might be some problem with decoding your resources above.
Bitmap workingBitmap = Bitmap.createBitmap(bitmap);
Bitmap mutableBitmap = workingBitmap.copy(Bitmap.Config.ARGB_8888, true);
Canvas canvas = new Canvas(mutableBitmap);
canvas.drawCircle(x, y, 25, paint);
my_imageview.setAdjustViewBounds(true);
my_imageview.setImageBitmap(mutableBitmap);
}
now for
image 1 . use drawCircle(R.id.imageview1,imageview,x,y) and for
image 2 . use drawCircle(R.id.imageview2,imageview2,x,y)
answered Jan 3 at 11:26
NullPointerExceptionNullPointerException
2,35311834
i tried to do that but it i think im doing it wrong since it draws circle on the same place in image1 and doesn't draw circle on image2
– Ahsan raza
Jan 3 at 11:56
@Ahsanraza i've updated my answer .
– NullPointerException
Jan 3 at 12:30
i tried it but it giving in error can you add this in my code and tell me how to use it maybe im doing it wrong
– Ahsan raza
Jan 5 at 20:09
@Ahsanraza whats the error you are getting ?
– NullPointerException
Jan 7 at 4:37
Please look above i edited my question I placed your code inside in PlayActivity i might have placed it wrong. I read in a documentation that you have to get width and height of each image view separately and somehow use it i dont know how. I have read many things in these few days and tried different things but i cant get it to work all i wanted to make was a simple game :'( maybe i picked the wrong game.
– Ahsan raza
Jan 8 at 6:57
|
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1 Answer
1
active
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
When You tape on Image . You are getting x,y coordinate in
x = event.getX();
y = event.getY();
Now you have x,y coordinate . call your drawCircle() method on both of your imageview with this same x,y coordinate.
For Drawing circle :
make one function drawCircle();
public void drawCircle(int my_image_id,Imageview my_imageview,int x ,int y){
BitmapFactory.Options myOptions = new BitmapFactory.Options();
myOptions.inDither = true;
myOptions.inScaled = false;
myOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;// important
myOptions.inPurgeable = true;
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), my_image_id,myOptions);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setColor(Color.BLUE);
//please check here . you've got your bitmap or it is null.
// if it is null,there might be some problem with decoding your resources above.
Bitmap workingBitmap = Bitmap.createBitmap(bitmap);
Bitmap mutableBitmap = workingBitmap.copy(Bitmap.Config.ARGB_8888, true);
Canvas canvas = new Canvas(mutableBitmap);
canvas.drawCircle(x, y, 25, paint);
my_imageview.setAdjustViewBounds(true);
my_imageview.setImageBitmap(mutableBitmap);
}
now for
image 1 . use drawCircle(R.id.imageview1,imageview,x,y) and for
image 2 . use drawCircle(R.id.imageview2,imageview2,x,y)
answered Jan 3 at 11:26
NullPointerExceptionNullPointerException
2,35311834
i tried to do that but it i think im doing it wrong since it draws circle on the same place in image1 and doesn't draw circle on image2
– Ahsan raza
Jan 3 at 11:56
@Ahsanraza i've updated my answer .
– NullPointerException
Jan 3 at 12:30
i tried it but it giving in error can you add this in my code and tell me how to use it maybe im doing it wrong
– Ahsan raza
Jan 5 at 20:09
@Ahsanraza whats the error you are getting ?
– NullPointerException
Jan 7 at 4:37
Please look above i edited my question I placed your code inside in PlayActivity i might have placed it wrong. I read in a documentation that you have to get width and height of each image view separately and somehow use it i dont know how. I have read many things in these few days and tried different things but i cant get it to work all i wanted to make was a simple game :'( maybe i picked the wrong game.
– Ahsan raza
Jan 8 at 6:57
|
show 5 more comments
When You tape on Image . You are getting x,y coordinate in
x = event.getX();
y = event.getY();
Now you have x,y coordinate . call your drawCircle() method on both of your imageview with this same x,y coordinate.
For Drawing circle :
make one function drawCircle();
public void drawCircle(int my_image_id,Imageview my_imageview,int x ,int y){
BitmapFactory.Options myOptions = new BitmapFactory.Options();
myOptions.inDither = true;
myOptions.inScaled = false;
myOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;// important
myOptions.inPurgeable = true;
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), my_image_id,myOptions);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setColor(Color.BLUE);
//please check here . you've got your bitmap or it is null.
// if it is null,there might be some problem with decoding your resources above.
Bitmap workingBitmap = Bitmap.createBitmap(bitmap);
Bitmap mutableBitmap = workingBitmap.copy(Bitmap.Config.ARGB_8888, true);
Canvas canvas = new Canvas(mutableBitmap);
canvas.drawCircle(x, y, 25, paint);
my_imageview.setAdjustViewBounds(true);
my_imageview.setImageBitmap(mutableBitmap);
}
now for
image 1 . use drawCircle(R.id.imageview1,imageview,x,y) and for
image 2 . use drawCircle(R.id.imageview2,imageview2,x,y)
answered Jan 3 at 11:26
NullPointerExceptionNullPointerException
2,35311834
i tried to do that but it i think im doing it wrong since it draws circle on the same place in image1 and doesn't draw circle on image2
– Ahsan raza
Jan 3 at 11:56
@Ahsanraza i've updated my answer .
– NullPointerException
Jan 3 at 12:30
i tried it but it giving in error can you add this in my code and tell me how to use it maybe im doing it wrong
– Ahsan raza
Jan 5 at 20:09
@Ahsanraza whats the error you are getting ?
– NullPointerException
Jan 7 at 4:37
Please look above i edited my question I placed your code inside in PlayActivity i might have placed it wrong. I read in a documentation that you have to get width and height of each image view separately and somehow use it i dont know how. I have read many things in these few days and tried different things but i cant get it to work all i wanted to make was a simple game :'( maybe i picked the wrong game.
– Ahsan raza
Jan 8 at 6:57
|
show 5 more comments
When You tape on Image . You are getting x,y coordinate in
x = event.getX();
y = event.getY();
Now you have x,y coordinate . call your drawCircle() method on both of your imageview with this same x,y coordinate.
For Drawing circle :
make one function drawCircle();
public void drawCircle(int my_image_id,Imageview my_imageview,int x ,int y){
BitmapFactory.Options myOptions = new BitmapFactory.Options();
myOptions.inDither = true;
myOptions.inScaled = false;
myOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;// important
myOptions.inPurgeable = true;
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), my_image_id,myOptions);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setColor(Color.BLUE);
//please check here . you've got your bitmap or it is null.
// if it is null,there might be some problem with decoding your resources above.
Bitmap workingBitmap = Bitmap.createBitmap(bitmap);
Bitmap mutableBitmap = workingBitmap.copy(Bitmap.Config.ARGB_8888, true);
Canvas canvas = new Canvas(mutableBitmap);
canvas.drawCircle(x, y, 25, paint);
my_imageview.setAdjustViewBounds(true);
my_imageview.setImageBitmap(mutableBitmap);
}
now for
image 1 . use drawCircle(R.id.imageview1,imageview,x,y) and for
image 2 . use drawCircle(R.id.imageview2,imageview2,x,y)
answered Jan 3 at 11:26
NullPointerExceptionNullPointerException
2,35311834
When You tape on Image . You are getting x,y coordinate in
x = event.getX();
y = event.getY();
Now you have x,y coordinate . call your drawCircle() method on both of your imageview with this same x,y coordinate.
For Drawing circle :
make one function drawCircle();
public void drawCircle(int my_image_id,Imageview my_imageview,int x ,int y){
BitmapFactory.Options myOptions = new BitmapFactory.Options();
myOptions.inDither = true;
myOptions.inScaled = false;
myOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;// important
myOptions.inPurgeable = true;
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), my_image_id,myOptions);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setColor(Color.BLUE);
//please check here . you've got your bitmap or it is null.
// if it is null,there might be some problem with decoding your resources above.
Bitmap workingBitmap = Bitmap.createBitmap(bitmap);
Bitmap mutableBitmap = workingBitmap.copy(Bitmap.Config.ARGB_8888, true);
Canvas canvas = new Canvas(mutableBitmap);
canvas.drawCircle(x, y, 25, paint);
my_imageview.setAdjustViewBounds(true);
my_imageview.setImageBitmap(mutableBitmap);
}
now for
image 1 . use drawCircle(R.id.imageview1,imageview,x,y) and for
image 2 . use drawCircle(R.id.imageview2,imageview2,x,y)
answered Jan 3 at 11:26
NullPointerExceptionNullPointerException
2,35311834
edited Jan 8 at 7:10
answered Jan 3 at 11:26
NullPointerExceptionNullPointerException
2,35311834
answered Jan 3 at 11:26
NullPointerExceptionNullPointerException
2,35311834
answered Jan 3 at 11:26
NullPointerExceptionNullPointerException
2,35311834
2,35311834
i tried to do that but it i think im doing it wrong since it draws circle on the same place in image1 and doesn't draw circle on image2
– Ahsan raza
Jan 3 at 11:56
@Ahsanraza i've updated my answer .
– NullPointerException
Jan 3 at 12:30
i tried it but it giving in error can you add this in my code and tell me how to use it maybe im doing it wrong
– Ahsan raza
Jan 5 at 20:09
@Ahsanraza whats the error you are getting ?
– NullPointerException
Jan 7 at 4:37
Please look above i edited my question I placed your code inside in PlayActivity i might have placed it wrong. I read in a documentation that you have to get width and height of each image view separately and somehow use it i dont know how. I have read many things in these few days and tried different things but i cant get it to work all i wanted to make was a simple game :'( maybe i picked the wrong game.
– Ahsan raza
Jan 8 at 6:57
|
show 5 more comments
i tried to do that but it i think im doing it wrong since it draws circle on the same place in image1 and doesn't draw circle on image2
– Ahsan raza
Jan 3 at 11:56
@Ahsanraza i've updated my answer .
– NullPointerException
Jan 3 at 12:30
i tried it but it giving in error can you add this in my code and tell me how to use it maybe im doing it wrong
– Ahsan raza
Jan 5 at 20:09
@Ahsanraza whats the error you are getting ?
– NullPointerException
Jan 7 at 4:37
Please look above i edited my question I placed your code inside in PlayActivity i might have placed it wrong. I read in a documentation that you have to get width and height of each image view separately and somehow use it i dont know how. I have read many things in these few days and tried different things but i cant get it to work all i wanted to make was a simple game :'( maybe i picked the wrong game.
– Ahsan raza
Jan 8 at 6:57
i tried to do that but it i think im doing it wrong since it draws circle on the same place in image1 and doesn't draw circle on image2
– Ahsan raza
Jan 3 at 11:56
i tried to do that but it i think im doing it wrong since it draws circle on the same place in image1 and doesn't draw circle on image2
– Ahsan raza
Jan 3 at 11:56
@Ahsanraza i've updated my answer .
– NullPointerException
Jan 3 at 12:30
@Ahsanraza i've updated my answer .
– NullPointerException
Jan 3 at 12:30
i tried it but it giving in error can you add this in my code and tell me how to use it maybe im doing it wrong
– Ahsan raza
Jan 5 at 20:09
i tried it but it giving in error can you add this in my code and tell me how to use it maybe im doing it wrong
– Ahsan raza
Jan 5 at 20:09
@Ahsanraza whats the error you are getting ?
– NullPointerException
Jan 7 at 4:37
@Ahsanraza whats the error you are getting ?
– NullPointerException
Jan 7 at 4:37
Please look above i edited my question I placed your code inside in PlayActivity i might have placed it wrong. I read in a documentation that you have to get width and height of each image view separately and somehow use it i dont know how. I have read many things in these few days and tried different things but i cant get it to work all i wanted to make was a simple game :'( maybe i picked the wrong game.
– Ahsan raza
Jan 8 at 6:57
Please look above i edited my question I placed your code inside in PlayActivity i might have placed it wrong. I read in a documentation that you have to get width and height of each image view separately and somehow use it i dont know how. I have read many things in these few days and tried different things but i cant get it to work all i wanted to make was a simple game :'( maybe i picked the wrong game.
– Ahsan raza
Jan 8 at 6:57
|
show 5 more comments
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