它刚刚工作，但后来发生了错误。我只在Android清单中添加了minSDK和TargetSDK。
这是logcat：
01-19 23:01:17.054: ERROR/System(51): Failure starting core service
java.lang.SecurityException
at android.os.BinderProxy.transact(Native Method)
at android.os.ServiceManagerProxy.addService(ServiceManagerNative.java:146)
at android.os.ServiceManager.addService(ServiceManager.java:72)
at com.android.server.ServerThread.run(SystemServer.java:162)
01-19 23:01:17.094: ERROR/AndroidRuntime(51): Crash logging skipped, no checkin service
01-19 23:01:19.553: ERROR/LockPatternKeyguardView(51): Failed to bind to GLS while checking for account
01-19 23:01:24.994: ERROR/ActivityThread(107): Failed to find provider info for com.google.settings
01-19 23:01:25.034: ERROR/ActivityThread(107): Failed to find provider info for com.google.settings
01-19 23:01:30.764: ERROR/ApplicationContext(51): Couldn't create directory for SharedPreferences file shared_prefs/wallpaper-hints.xml
01-19 23:01:32.614: ERROR/vold(26): Cannot start volume '/sdcard' (volume is not bound)
01-19 23:01:37.034: ERROR/MediaPlayerService(30): Couldn't open fd for content://settings/system/notification_sound
01-19 23:01:37.054: ERROR/MediaPlayer(51): Unable to to create media player
01-19 23:01:28.556: ERROR/ActivityThread(104): Failed to find provider info for android.server.checkin
01-19 23:01:30.506: ERROR/ActivityThread(104): Failed to find provider info for android.server.checkin
01-19 23:01:30.627: ERROR/ActivityThread(104): Failed to find provider info for android.server.checkin