GridLayout Column width

Question

I have 2 columns in my GridLayout. What I want to do is make those columns take up half of the width of the screen each and then have its child contents fill their own cells width/height. I tried setting the children to fill_parent but that just causes the first one to take over the entire layout. And it seems GridLayout doesn't support weight? Maybe there is a better layout to use, but I want a Grid style layout so that seems like the natural choice.

Answer 1

This code is available on pre API21 with support library!

I have a simple piece of code to show 4 buttons in a gridLayout of 2 columns that take 50% of the available space: perhaps it can help

<GridLayout     android:id="@+id/grid"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:columnCount="2"     >       <Button         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Button"         android:layout_gravity="fill"         android:layout_columnWeight="1"         />         <Button         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Button"         android:layout_gravity="fill"         android:layout_columnWeight="1"         />         <Button         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Button"         android:layout_gravity="fill"         android:layout_columnWeight="1"         />         <Button         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Button"         android:layout_gravity="fill"         android:layout_columnWeight="1"         />    </GridLayout> 

Solution is perhaps this :

android:layout_gravity="fill" android:layout_columnWeight="1" 

Answer 2

For pre API 21, use support library:

add

compile 'com.android.support:appcompat-v7:23.1.1' compile 'com.android.support:design:23.1.1' 

to your dependencies.

Then in your xml file:

<android.support.v7.widget.GridLayout                     xmlns:app="http://schemas.android.com/apk/res-auto"                     android:layout_width="match_parent"                     android:layout_height="wrap_content"                     app:columnCount="2"                     app:orientation="horizontal"                     app:rowCount="1">                      <TextView                         android:text="1"                         android:textStyle="bold"                         app:layout_columnWeight="1"                         />                      <TextView                         android:text="2"                         android:textStyle="bold"                         app:layout_columnWeight="1" />  </android.support.v7.widget.GridLayout> 

Here note the use of "app" prefix and dont forget to add

xmlns:app="http://schemas.android.com/apk/res-auto" 

to your xml file