去掉应用title引起空指针错误 tabtitle空指针 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 08-10 21:51:31.610: W/dalvikvm(2538): threadid=1: thread exiting with uncaught exception (group=0x413f1ac8)08-10 21:51:31.610: E/AndroidRuntime(2538): FATAL EXCEPTION: main08-10 21:51:31.610: E/AndroidRuntime(2538): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.tabhost/com.example.tabhost.MainActivity}: java.lang.NullPointerException08-10 21:51:31.610: E/AndroidRuntime(2538): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2249)08-10 21:51:31.610: E/AndroidRuntime(2538): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2299)08-10 21:51:31.610: E/AndroidRuntime(2538): at android.app.ActivityThread.access$700(ActivityThread.java:154)08-10 21:51:31.610: E/AndroidRuntime(2538): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1284)08-10 21:51:31.610: E/AndroidRuntime(2538): at android.os.Handler.dispatchMessage(Handler.java:99)08-10 21:51:31.610: E/AndroidRuntime(2538): at android.os.Looper.loop(Looper.java:137)08-10 21:51:31.610: E/AndroidRuntime(2538): at android.app.ActivityThread.main(ActivityThread.java:5308)08-10 21:51:31.610: E/AndroidRuntime(2538): at java.lang.reflect.Method.invokeNative(Native Method)08-10 21:51:31.610: E/AndroidRuntime(2538): at java.lang.reflect.Method.invoke(Method.java:511)08-10 21:51:31.610: E/AndroidRuntime(2538): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)08-10 21:51:31.610: E/AndroidRuntime(2538): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)08-10 21:51:31.610: E/AndroidRuntime(2538): at dalvik.system.NativeStart.main(Native Method)08-10 21:51:31.610: E/AndroidRuntime(2538): Caused by: java.lang.NullPointerException08-10 21:51:31.610: E/AndroidRuntime(2538): at com.example.tabhost.MainActivity.onCreate(MainActivity.java:21)08-10 21:51:31.610: E/AndroidRuntime(2538): at android.app.Activity.performCreate(Activity.java:5255)08-10 21:51:31.610: E/AndroidRuntime(2538): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1097)08-10 21:51:31.610: E/AndroidRuntime(2538): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2213)08-10 21:51:31.610: E/AndroidRuntime(2538): ... 11 more bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS)debug下看看这个bar是否null了 super.onCreate(savedInstanceState)加在他之前的。是必须 关于android获取录音音量的问题。 请教:同一个线程内,可以用sendMessage,handleMessage这样的方式么 help me Android测试开发工程师 VS Android开发工程师 如何保存已发送的短信到发件箱中? 本易的本子被刷成砖头,求救中! service后台播放问题 android 模拟器启动报错 各位大神,请问actionBar的Tab间的竖线怎么自定义?? Android开发遇到一个问题,怎么拦截键盘的input事件 安卓系统的电脑,开发的时候像android手机一样调试吗 想了一天的问题,怎么在intentService中向UI线程传送参数
08-10 21:51:31.610: E/AndroidRuntime(2538): FATAL EXCEPTION: main
08-10 21:51:31.610: E/AndroidRuntime(2538): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.tabhost/com.example.tabhost.MainActivity}: java.lang.NullPointerException
08-10 21:51:31.610: E/AndroidRuntime(2538): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2249)
08-10 21:51:31.610: E/AndroidRuntime(2538): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2299)
08-10 21:51:31.610: E/AndroidRuntime(2538): at android.app.ActivityThread.access$700(ActivityThread.java:154)
08-10 21:51:31.610: E/AndroidRuntime(2538): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1284)
08-10 21:51:31.610: E/AndroidRuntime(2538): at android.os.Handler.dispatchMessage(Handler.java:99)
08-10 21:51:31.610: E/AndroidRuntime(2538): at android.os.Looper.loop(Looper.java:137)
08-10 21:51:31.610: E/AndroidRuntime(2538): at android.app.ActivityThread.main(ActivityThread.java:5308)
08-10 21:51:31.610: E/AndroidRuntime(2538): at java.lang.reflect.Method.invokeNative(Native Method)
08-10 21:51:31.610: E/AndroidRuntime(2538): at java.lang.reflect.Method.invoke(Method.java:511)
08-10 21:51:31.610: E/AndroidRuntime(2538): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
08-10 21:51:31.610: E/AndroidRuntime(2538): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
08-10 21:51:31.610: E/AndroidRuntime(2538): at dalvik.system.NativeStart.main(Native Method)
08-10 21:51:31.610: E/AndroidRuntime(2538): Caused by: java.lang.NullPointerException
08-10 21:51:31.610: E/AndroidRuntime(2538): at com.example.tabhost.MainActivity.onCreate(MainActivity.java:21)
08-10 21:51:31.610: E/AndroidRuntime(2538): at android.app.Activity.performCreate(Activity.java:5255)
08-10 21:51:31.610: E/AndroidRuntime(2538): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1097)
08-10 21:51:31.610: E/AndroidRuntime(2538): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2213)
08-10 21:51:31.610: E/AndroidRuntime(2538): ... 11 more
debug下看看这个bar是否null了
加在他之前的。是必须