RecyclerView LinearLayout always appearing on top of other elements












0















I have this screen called Messages that displays a list of recent messages to the user. In my activity_messages.xml file I have this bit of code:



<View
android:id="@+id/horizontal_line"
android:layout_width="351dp"
android:layout_height="1dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginBottom="8dp"
android:background="@android:color/black"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.47"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@+id/Game_Button"
app:layout_constraintVertical_bias="0.216" />


Basically, this block of code creates a horizontal line. Below that horizontal, I want to display the user's recent messages.



Below that horizontal line block of code, I have this code:



<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout_editor_absoluteX="64dp"
tools:layout_editor_absoluteY="168dp">

<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="vertical">
</android.support.v7.widget.RecyclerView>
</android.support.v4.widget.NestedScrollView>


This takes care of displaying the user's recent messages.



Now in my Messages.java file I have this bit of code:



mMessagesLayoutManager = new LinearLayoutManager(Messages.this);
mRecyclerView.setLayoutManager(mMessagesLayoutManager);
mMessagesAdapter = new MessagesAdapter(getDataSetMessages(), Messages.this);
mRecyclerView.setAdapter(mMessagesAdapter);

for(int i = 0; i < 100; i++) {
MessagesObject obj = new MessagesObject(Integer.toString(i));
resultsMessages.add(obj);
}
mMessagesAdapter.notifyDataSetChanged();


This code is for testing purposes, but it works. It shows all the user's messages a linear order and I am able to scroll through them. My only problem is when I run the program, the recent messages don't start below the horizontal line. Some of the messages are above the horizontal line and on top of the other elements. I think the first message jumps to position (0,0).



How do I fix this? I would like my messages to appear the way they are right now, just below the horizontal line.










share|improve this question

























  • post your full activity_messages.xml file code

    – Saurabh Bhandari
    Jan 2 at 5:31
















0















I have this screen called Messages that displays a list of recent messages to the user. In my activity_messages.xml file I have this bit of code:



<View
android:id="@+id/horizontal_line"
android:layout_width="351dp"
android:layout_height="1dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginBottom="8dp"
android:background="@android:color/black"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.47"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@+id/Game_Button"
app:layout_constraintVertical_bias="0.216" />


Basically, this block of code creates a horizontal line. Below that horizontal, I want to display the user's recent messages.



Below that horizontal line block of code, I have this code:



<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout_editor_absoluteX="64dp"
tools:layout_editor_absoluteY="168dp">

<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="vertical">
</android.support.v7.widget.RecyclerView>
</android.support.v4.widget.NestedScrollView>


This takes care of displaying the user's recent messages.



Now in my Messages.java file I have this bit of code:



mMessagesLayoutManager = new LinearLayoutManager(Messages.this);
mRecyclerView.setLayoutManager(mMessagesLayoutManager);
mMessagesAdapter = new MessagesAdapter(getDataSetMessages(), Messages.this);
mRecyclerView.setAdapter(mMessagesAdapter);

for(int i = 0; i < 100; i++) {
MessagesObject obj = new MessagesObject(Integer.toString(i));
resultsMessages.add(obj);
}
mMessagesAdapter.notifyDataSetChanged();


This code is for testing purposes, but it works. It shows all the user's messages a linear order and I am able to scroll through them. My only problem is when I run the program, the recent messages don't start below the horizontal line. Some of the messages are above the horizontal line and on top of the other elements. I think the first message jumps to position (0,0).



How do I fix this? I would like my messages to appear the way they are right now, just below the horizontal line.










share|improve this question

























  • post your full activity_messages.xml file code

    – Saurabh Bhandari
    Jan 2 at 5:31














0












0








0








I have this screen called Messages that displays a list of recent messages to the user. In my activity_messages.xml file I have this bit of code:



<View
android:id="@+id/horizontal_line"
android:layout_width="351dp"
android:layout_height="1dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginBottom="8dp"
android:background="@android:color/black"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.47"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@+id/Game_Button"
app:layout_constraintVertical_bias="0.216" />


Basically, this block of code creates a horizontal line. Below that horizontal, I want to display the user's recent messages.



Below that horizontal line block of code, I have this code:



<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout_editor_absoluteX="64dp"
tools:layout_editor_absoluteY="168dp">

<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="vertical">
</android.support.v7.widget.RecyclerView>
</android.support.v4.widget.NestedScrollView>


This takes care of displaying the user's recent messages.



Now in my Messages.java file I have this bit of code:



mMessagesLayoutManager = new LinearLayoutManager(Messages.this);
mRecyclerView.setLayoutManager(mMessagesLayoutManager);
mMessagesAdapter = new MessagesAdapter(getDataSetMessages(), Messages.this);
mRecyclerView.setAdapter(mMessagesAdapter);

for(int i = 0; i < 100; i++) {
MessagesObject obj = new MessagesObject(Integer.toString(i));
resultsMessages.add(obj);
}
mMessagesAdapter.notifyDataSetChanged();


This code is for testing purposes, but it works. It shows all the user's messages a linear order and I am able to scroll through them. My only problem is when I run the program, the recent messages don't start below the horizontal line. Some of the messages are above the horizontal line and on top of the other elements. I think the first message jumps to position (0,0).



How do I fix this? I would like my messages to appear the way they are right now, just below the horizontal line.










share|improve this question
















I have this screen called Messages that displays a list of recent messages to the user. In my activity_messages.xml file I have this bit of code:



<View
android:id="@+id/horizontal_line"
android:layout_width="351dp"
android:layout_height="1dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginBottom="8dp"
android:background="@android:color/black"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.47"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@+id/Game_Button"
app:layout_constraintVertical_bias="0.216" />


Basically, this block of code creates a horizontal line. Below that horizontal, I want to display the user's recent messages.



Below that horizontal line block of code, I have this code:



<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout_editor_absoluteX="64dp"
tools:layout_editor_absoluteY="168dp">

<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="vertical">
</android.support.v7.widget.RecyclerView>
</android.support.v4.widget.NestedScrollView>


This takes care of displaying the user's recent messages.



Now in my Messages.java file I have this bit of code:



mMessagesLayoutManager = new LinearLayoutManager(Messages.this);
mRecyclerView.setLayoutManager(mMessagesLayoutManager);
mMessagesAdapter = new MessagesAdapter(getDataSetMessages(), Messages.this);
mRecyclerView.setAdapter(mMessagesAdapter);

for(int i = 0; i < 100; i++) {
MessagesObject obj = new MessagesObject(Integer.toString(i));
resultsMessages.add(obj);
}
mMessagesAdapter.notifyDataSetChanged();


This code is for testing purposes, but it works. It shows all the user's messages a linear order and I am able to scroll through them. My only problem is when I run the program, the recent messages don't start below the horizontal line. Some of the messages are above the horizontal line and on top of the other elements. I think the first message jumps to position (0,0).



How do I fix this? I would like my messages to appear the way they are right now, just below the horizontal line.







java android android-recyclerview android-linearlayout






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Jan 2 at 5:22









ADM

9,094102554




9,094102554










asked Jan 2 at 4:53









Bert HanzBert Hanz

496




496













  • post your full activity_messages.xml file code

    – Saurabh Bhandari
    Jan 2 at 5:31



















  • post your full activity_messages.xml file code

    – Saurabh Bhandari
    Jan 2 at 5:31

















post your full activity_messages.xml file code

– Saurabh Bhandari
Jan 2 at 5:31





post your full activity_messages.xml file code

– Saurabh Bhandari
Jan 2 at 5:31












3 Answers
3






active

oldest

votes


















3














Change this:




<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout_editor_absoluteX="64dp"
tools:layout_editor_absoluteY="168dp">



to this instead:



<android.support.v4.widget.NestedScrollView
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintTop_toBottomOf="@+id/horizontal_line"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintBottom_toBottomOf="parent">


Two major changes going on here:





  • ConstraintLayout doesn't fully support match_parent, so we use 0dp (which means "match constraints") instead.

  • Add constraints for all four sides. The start/end constraints make the view fill the screen horizontally, and the top/bottom constraints make the view fill everything from below the line to the bottom of the screen.






share|improve this answer
























  • That fixed it. Thanks for the clarification for using match_parent inside ConstraintLayout. Didn't know about that.

    – Bert Hanz
    Jan 2 at 5:56



















1














it is just Constrain issue.
You haven't set constraint for recyclerview try to add constrain and run again
it will work






share|improve this answer































    1














    You can either wrap both views the first view and the scrollview in a LinearLayout with android:orientation="vertical", or you can add constraints (if the root view is a ConstraintLayout)






    share|improve this answer























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      3 Answers
      3






      active

      oldest

      votes








      3 Answers
      3






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes









      3














      Change this:




      <android.support.v4.widget.NestedScrollView
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      tools:layout_editor_absoluteX="64dp"
      tools:layout_editor_absoluteY="168dp">



      to this instead:



      <android.support.v4.widget.NestedScrollView
      android:layout_width="0dp"
      android:layout_height="0dp"
      app:layout_constraintTop_toBottomOf="@+id/horizontal_line"
      app:layout_constraintStart_toStartOf="parent"
      app:layout_constraintEnd_toEndOf="parent"
      app:layout_constraintBottom_toBottomOf="parent">


      Two major changes going on here:





      • ConstraintLayout doesn't fully support match_parent, so we use 0dp (which means "match constraints") instead.

      • Add constraints for all four sides. The start/end constraints make the view fill the screen horizontally, and the top/bottom constraints make the view fill everything from below the line to the bottom of the screen.






      share|improve this answer
























      • That fixed it. Thanks for the clarification for using match_parent inside ConstraintLayout. Didn't know about that.

        – Bert Hanz
        Jan 2 at 5:56
















      3














      Change this:




      <android.support.v4.widget.NestedScrollView
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      tools:layout_editor_absoluteX="64dp"
      tools:layout_editor_absoluteY="168dp">



      to this instead:



      <android.support.v4.widget.NestedScrollView
      android:layout_width="0dp"
      android:layout_height="0dp"
      app:layout_constraintTop_toBottomOf="@+id/horizontal_line"
      app:layout_constraintStart_toStartOf="parent"
      app:layout_constraintEnd_toEndOf="parent"
      app:layout_constraintBottom_toBottomOf="parent">


      Two major changes going on here:





      • ConstraintLayout doesn't fully support match_parent, so we use 0dp (which means "match constraints") instead.

      • Add constraints for all four sides. The start/end constraints make the view fill the screen horizontally, and the top/bottom constraints make the view fill everything from below the line to the bottom of the screen.






      share|improve this answer
























      • That fixed it. Thanks for the clarification for using match_parent inside ConstraintLayout. Didn't know about that.

        – Bert Hanz
        Jan 2 at 5:56














      3












      3








      3







      Change this:




      <android.support.v4.widget.NestedScrollView
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      tools:layout_editor_absoluteX="64dp"
      tools:layout_editor_absoluteY="168dp">



      to this instead:



      <android.support.v4.widget.NestedScrollView
      android:layout_width="0dp"
      android:layout_height="0dp"
      app:layout_constraintTop_toBottomOf="@+id/horizontal_line"
      app:layout_constraintStart_toStartOf="parent"
      app:layout_constraintEnd_toEndOf="parent"
      app:layout_constraintBottom_toBottomOf="parent">


      Two major changes going on here:





      • ConstraintLayout doesn't fully support match_parent, so we use 0dp (which means "match constraints") instead.

      • Add constraints for all four sides. The start/end constraints make the view fill the screen horizontally, and the top/bottom constraints make the view fill everything from below the line to the bottom of the screen.






      share|improve this answer













      Change this:




      <android.support.v4.widget.NestedScrollView
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      tools:layout_editor_absoluteX="64dp"
      tools:layout_editor_absoluteY="168dp">



      to this instead:



      <android.support.v4.widget.NestedScrollView
      android:layout_width="0dp"
      android:layout_height="0dp"
      app:layout_constraintTop_toBottomOf="@+id/horizontal_line"
      app:layout_constraintStart_toStartOf="parent"
      app:layout_constraintEnd_toEndOf="parent"
      app:layout_constraintBottom_toBottomOf="parent">


      Two major changes going on here:





      • ConstraintLayout doesn't fully support match_parent, so we use 0dp (which means "match constraints") instead.

      • Add constraints for all four sides. The start/end constraints make the view fill the screen horizontally, and the top/bottom constraints make the view fill everything from below the line to the bottom of the screen.







      share|improve this answer












      share|improve this answer



      share|improve this answer










      answered Jan 2 at 5:41









      Ben P.Ben P.

      24.7k32250




      24.7k32250













      • That fixed it. Thanks for the clarification for using match_parent inside ConstraintLayout. Didn't know about that.

        – Bert Hanz
        Jan 2 at 5:56



















      • That fixed it. Thanks for the clarification for using match_parent inside ConstraintLayout. Didn't know about that.

        – Bert Hanz
        Jan 2 at 5:56

















      That fixed it. Thanks for the clarification for using match_parent inside ConstraintLayout. Didn't know about that.

      – Bert Hanz
      Jan 2 at 5:56





      That fixed it. Thanks for the clarification for using match_parent inside ConstraintLayout. Didn't know about that.

      – Bert Hanz
      Jan 2 at 5:56













      1














      it is just Constrain issue.
      You haven't set constraint for recyclerview try to add constrain and run again
      it will work






      share|improve this answer




























        1














        it is just Constrain issue.
        You haven't set constraint for recyclerview try to add constrain and run again
        it will work






        share|improve this answer


























          1












          1








          1







          it is just Constrain issue.
          You haven't set constraint for recyclerview try to add constrain and run again
          it will work






          share|improve this answer













          it is just Constrain issue.
          You haven't set constraint for recyclerview try to add constrain and run again
          it will work







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Jan 2 at 5:01









          Rohit ChauhanRohit Chauhan

          587417




          587417























              1














              You can either wrap both views the first view and the scrollview in a LinearLayout with android:orientation="vertical", or you can add constraints (if the root view is a ConstraintLayout)






              share|improve this answer




























                1














                You can either wrap both views the first view and the scrollview in a LinearLayout with android:orientation="vertical", or you can add constraints (if the root view is a ConstraintLayout)






                share|improve this answer


























                  1












                  1








                  1







                  You can either wrap both views the first view and the scrollview in a LinearLayout with android:orientation="vertical", or you can add constraints (if the root view is a ConstraintLayout)






                  share|improve this answer













                  You can either wrap both views the first view and the scrollview in a LinearLayout with android:orientation="vertical", or you can add constraints (if the root view is a ConstraintLayout)







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Jan 2 at 5:32









                  SnortSnort

                  243




                  243






























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