Data from the adapter is displayed using the GridLayoutManager.

MainActivity.java

private RecyclerView mRecyclerView; mRecyclerView = (RecyclerView) findViewById(R.id.list); mRecyclerView.setLayoutManager(new GridLayoutManager(this, 7));

main.xml

 <android.support.v7.widget.RecyclerView android:id="@+id/list" android:layout_width="match_parent" android:layout_height="match_parent" android:padding="8dp" android:clipToPadding="false"> </android.support.v7.widget.RecyclerView>

In item.xml template for item

 <android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:card_view="http://schemas.android.com/apk/res-auto" android:id="@+id/cv" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_centerHorizontal="true" card_view:cardCornerRadius="5dp" card_view:cardElevation="2dp" card_view:contentPadding="10dp"> <RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent"> <TextView android:id="@+id/text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:text="@string/text" android:layout_centerVertical="true" android:textColor="@color/primary_text_default_material_light" android:textSize="16sp"/> </RelativeLayout> </android.support.v7.widget.CardView>

If you write this way, then the cell will naturally stretch to fit the text, leaving a void at the bottom of the screen.

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If you write android:layout_width="match_parent" , one cell will stretch to full screen.

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Is it possible to make it so that all the cells fit on one screen and fill in all the spaces on the screen?

  • one
    there is no easy way. You need to calculate the height of the cell in advance, and set the calculated height in onCreateViewHolder to your View - Vladyslav Matviienko
  • The screens are different for everyone. If you pre-set a certain size, then on some screens there will be a void below, and on others it will scroll down - Artsait
  • one
    no, count, for example, when launching an application - Vladyslav Matviienko
  • one
    By GridLayoutManager, I found very little information. I do not understand how this can be done. Can I programmatically change the size of the GridLayoutManager cell? Not in the item.xml file, or do you mean to resize exactly CardView in the adapter for example? - Artsait 2:49 pm
  • one
    Yes, right in the adapter - Vladyslav Matviienko

1 answer 1

Found the answer

  @Override public Holder onCreateViewHolder(ViewGroup parent, int viewType) { View itemView = mInflater.inflate(R.layout.item_layout, parent, false); int height = parent.getMeasuredHeight() / 7; itemView.setMinimumHeight(height); return new Holder(itemView); }

And remove in android.support.v7.widget.RecyclerView padding