title: Your content must have a ListView whose id attribute is 'android.R.id.list' when extending ListActivity
body: <p>LogCat</p>
  
  <pre><code>06-02 15:53:34.742: E/Trace(1188): error opening trace file: No such file or directory (2)
  06-02 15:53:36.682: D/dalvikvm(1188): GC_FOR_ALLOC freed 49K, 7% free 2539K/2708K, paused 483ms, total 484ms
  06-02 15:53:36.712: I/dalvikvm-heap(1188): Grow heap (frag case) to 3.666MB for 1127536-byte allocation
  06-02 15:53:36.782: D/dalvikvm(1188): GC_FOR_ALLOC freed 1K, 5% free 3639K/3812K, paused 69ms, total 69ms
  06-02 15:53:36.902: D/dalvikvm(1188): GC_CONCURRENT freed &lt;1K, 5% free 3639K/3812K, paused 15ms+42ms, total 123ms
  06-02 15:53:37.672: I/Choreographer(1188): Skipped 49 frames!  The application may be doing too much work on its main thread.
  06-02 15:53:37.705: D/gralloc_goldfish(1188): Emulator without GPU emulation detected.
  06-02 15:53:40.412: D/AndroidRuntime(1188): Shutting down VM
  06-02 15:53:40.412: W/dalvikvm(1188): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
  06-02 15:53:40.612: E/AndroidRuntime(1188): FATAL EXCEPTION: main
  06-02 15:53:40.612: E/AndroidRuntime(1188): java.lang.RuntimeException: Unable to start activity ComponentInfo{testing.android.application.three/testing.android.application.three.MainActivityNext}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at android.app.ActivityThread.access$600(ActivityThread.java:141)
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at android.os.Handler.dispatchMessage(Handler.java:99)
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at android.os.Looper.loop(Looper.java:137)
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at android.app.ActivityThread.main(ActivityThread.java:5041)
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at java.lang.reflect.Method.invokeNative(Native Method)
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at java.lang.reflect.Method.invoke(Method.java:511)
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at dalvik.system.NativeStart.main(Native Method)
  06-02 15:53:40.612: E/AndroidRuntime(1188): Caused by: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at android.app.ListActivity.onContentChanged(ListActivity.java:243)
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:273)
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at android.app.Activity.setContentView(Activity.java:1881)
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at testing.android.application.three.MainActivityNext.onCreate(MainActivityNext.java:28)
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at android.app.Activity.performCreate(Activity.java:5104)
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
  06-02 15:53:40.612: E/AndroidRuntime(1188):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
  06-02 15:53:40.612: E/AndroidRuntime(1188):     ... 11 more
  06-02 15:53:44.662: I/Process(1188): Sending signal. PID: 1188 SIG: 9
  </code></pre>