我的应用程序android崩溃了.
logcat错误:
07-09 12:00:46.486: D/dalvikvm(249): GC freed 613 objects / 50984 bytes in 89ms
07-09 12:00:49.944: D/dalvikvm(249): GC freed 2700 objects / 118760 bytes in 76ms
07-09 12:00:50.406: D/AndroidRuntime(249): Shutting down VM
07-09 12:00:50.406: W/dalvikvm(249): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
07-09 12:00:50.417: E/AndroidRuntime(249): Uncaught handler: thread main exiting due to uncaught exception
07-09 12:00:50.444: E/AndroidRuntime(249): java.lang.RuntimeException: Unable to start activity ComponentInfo{allo.nascubetest/allo.nascubetest.MainActivity2}: java.lang.NullPointerException
07-09 12:00:50.444: E/AndroidRuntime(249): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496)
07-09 12:00:50.444: E/AndroidRuntime(249): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
07-09 12:00:50.444: E/AndroidRuntime(249): at android.app.ActivityThread.access$2200(ActivityThread.java:119)
07-09 …