Question

android程序在模拟机上运行，出现“The application has stopped unexpectedly“,详细log信息如下

05-11 13:12:43.132: D/AndroidRuntime(519): Shutting down VM
05-11 13:12:43.132: W/dalvikvm(519): threadid=1: thread exiting with uncaught exception (group=0x40015560)
05-11 13:12:43.252: E/AndroidRuntime(519): FATAL EXCEPTION: main
05-11 13:12:43.252: E/AndroidRuntime(519): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.jia.test/com.jia.test.PhoneRecordActivity}: java.lang.NullPointerException
05-11 13:12:43.252: E/AndroidRuntime(519): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1569)
05-11 13:12:43.252: E/AndroidRuntime(519): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
05-11 13:12:43.252: E/AndroidRuntime(519): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
05-11 13:12:43.252: E/AndroidRuntime(519): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
05-11 13:12:43.252: E/AndroidRuntime(519): at android.os.Handler.dispatchMessage(Handler.java:99)
05-11 13:12:43.252: E/AndroidRuntime(519): at android.os.Looper.loop(Looper.java:123)
05-11 13:12:43.252: E/AndroidRuntime(519): at android.app.ActivityThread.main(ActivityThread.java:3683)
05-11 13:12:43.252: E/AndroidRuntime(519): at java.lang.reflect.Method.invokeNative(Native Method)
05-11 13:12:43.252: E/AndroidRuntime(519): at java.lang.reflect.Method.invoke(Method.java:507)
05-11 13:12:43.252: E/AndroidRuntime(519): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
05-11 13:12:43.252: E/AndroidRuntime(519): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
05-11 13:12:43.252: E/AndroidRuntime(519): at dalvik.system.NativeStart.main(Native Method)
05-11 13:12:43.252: E/AndroidRuntime(519): Caused by: java.lang.NullPointerException
05-11 13:12:43.252: E/AndroidRuntime(519): at android.content.ContextWrapper.getPackageName(ContextWrapper.java:120)
05-11 13:12:43.252: E/AndroidRuntime(519): at android.content.ComponentName.<init>(ComponentName.java:75)
05-11 13:12:43.252: E/AndroidRuntime(519): at android.content.Intent.<init>(Intent.java:2702)
05-11 13:12:43.252: E/AndroidRuntime(519): at com.jia.test.PhoneRecordActivity.<init>(PhoneRecordActivity.java:16)
05-11 13:12:43.252: E/AndroidRuntime(519): at java.lang.Class.newInstanceImpl(Native Method)
05-11 13:12:43.252: E/AndroidRuntime(519): at java.lang.Class.newInstance(Class.java:1409)
05-11 13:12:43.252: E/AndroidRuntime(519): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
05-11 13:12:43.252: E/AndroidRuntime(519): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1561)
05-11 13:12:43.252: E/AndroidRuntime(519): ... 11 more

Answer 1

PhoneRecordActivity 这个Activity在初始化的时候出现了空指针异常，检查PhoneRecordActivity.java的16行。