Error when trying to launch new Activity android

Question

I'm trying to launch an android activity from my Main activity, but I get force stop. The logcat error is like this:

java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'

But the activity that I try to launch already has a ListView with the id "list". Any advice is appreciated. UPDATE: Still can't figure out what's wrong. Here's my code:

activity_all_apps.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
            xmlns:tools="http://schemas.android.com/tools"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:paddingLeft="@dimen/activity_horizontal_margin"
            android:paddingRight="@dimen/activity_horizontal_margin"
            android:paddingTop="@dimen/activity_vertical_margin"
            android:paddingBottom="@dimen/activity_vertical_margin"
            tools:context="com.example.app.AllAppsActivity">

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

</RelativeLayout>

and AllAppsActivity.java

public class AllAppsActivity extends ListActivity

Answer 1

In your XML layout file related to this Activity you should have a ListView element that whose id is @android:id/list . Something like this.

<ListView
    android:id="@android:id/list"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

</ListView>