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The full ListView button disappears

I have a list and a button in the layout file that looks great, however, if listView fills the screen, the button is skipped, can someone advise me.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >

<ListView
 android:id="@+id/myListView"
 android:layout_width = "fill_parent"
 android:layout_height = "wrap_content"/>

 <Button 
    android:id="@+id/back_button"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_margin="20dip"
    android:text="@string/backButton_label" />

 </LinearLayout>
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1 answer

Try to wrap both ListView, and Buttonin your own LinearLayout, each of which has a height of 0dp and weight as a fraction of the total height of the layout.

Example: below ListView90% of the layout and Button10%. Adjust the values ​​accordingly.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:orientation="vertical" >

  <LinearLayout 
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="0.9"
    android:orientation="vertical" >
    <ListView
      android:id="@+id/myListView"
      android:layout_width = "fill_parent"
      android:layout_height = "fill_parent"/>
  </LinearLayout>

  <LinearLayout 
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="0.1"
    android:orientation="vertical" >
    <Button 
      android:id="@+id/back_button"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:layout_margin="20dip"
      android:text="@string/backButton_label" />
  </LinearLayout>

</LinearLayout>
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