1、GridView设置 adapter的时候出现空指针的错误:
LOG:
E/AndroidRuntime( 3632): FATAL EXCEPTION: main
E/AndroidRuntime( 3632): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.jrm.localmm/com.jrm.localmm.ui.main.FileBrowserActivity}: java.lang.NullPointerException
E/AndroidRuntime( 3632): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
E/AndroidRuntime( 3632): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
E/AndroidRuntime( 3632): at android.app.ActivityThread.access$600(ActivityThread.java:141)
E/AndroidRuntime( 3632): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
E/AndroidRuntime( 3632): at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime( 3632): at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime( 3632): at android.app.ActivityThread.main(ActivityThread.java:5103)
E/AndroidRuntime( 3632): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 3632): at java.lang.reflect.Method.invoke(Method.java:525)
E/AndroidRuntime( 3632): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:773)
E/AndroidRuntime( 3632): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:589)
E/AndroidRuntime( 3632): at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime( 3632): Caused by: java.lang.NullPointerException
E/AndroidRuntime( 3632): at com.jrm.localmm.ui.main.FileBrowserActivity.onCreate(FileBrowserActivity.java:200)
E/AndroidRuntime( 3632): at android.app.Activity.performCreate(Activity.java:5133)
E/AndroidRuntime( 3632): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
E/AndroidRuntime( 3632): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
E/AndroidRuntime( 3632): ... 11 more
E/AndroidRuntime( 3651): FATAL EXCEPTION: main
E/AndroidRuntime( 3651): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.jrm.localmm/com.jrm.localmm.ui.main.FileBrowserActivity}: java.lang.NullPointerException
E/AndroidRuntime( 3651): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
E/AndroidRuntime( 3651): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
E/AndroidRuntime( 3651): at android.app.ActivityThread.access$600(ActivityThread.java:141)
E/AndroidRuntime( 3651): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1

本文记录了在Android开发中遇到的一些典型错误,包括GridView初始化时的空指针异常、Linux下编译Android程序的常见问题、资源管理器图片格式错误、安装APK超时、主题样式和菜单属性错误以及空指针和资源对象使用不当导致的问题,并提供了相应的解决方案。
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