Question

Here’s the layout for a custom Alert Dialog I’ve been working on. It’s just a TextView with a CheckBox underneath:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<ScrollView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" >

    <TextView
        android:id="@+id/help_dialog_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="20dp" />
</ScrollView>

<CheckBox
    android:id="@+id/display_help_dialogs_checkbox"
    android:layout_width="wrap_content"
    android:layout_height="fill_parent"
    android:text="@string/display_help_dialogs" />

When the TextView’s textSize is sufficiently large (i.e. when the ScrollView is actually “put to use”), the CheckBox is nowhere to be seen.

Thanks for the help,
Mitchell

Answer 1

I believe your ScrollView is pushing the Checkbox outside the bounds of the layout. Try something like this:

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent" >

  <LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/help_dialog_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="20dp" />

    <CheckBox
        android:id="@+id/display_help_dialogs_checkbox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/display_help_dialogs" />
  </LinearLayout>
</ScrollView>

You may need to specify dimensions of the scrollview in this case, but what should happen is the LinearLayout becomes bigger than the area designated in the ScrollView. The ScrollView will then allow the user to scroll down the layout to see the rest.