开发学院手机开发 Android 开发 Android中proguard的作用阅读

Android中proguard的作用

　2012-08-08 12:12:05　来源：WEB开发网　　　

核心提示： 这两天在手机设置里面需要添加一个设置项，可是在所有代码都添加好之后，Android中proguard的作用，点击该设置项时，一直报错

这两天在手机设置里面需要添加一个设置项，可是在所有代码都添加好之后，点击该设置项时，一直报错，log为：

08-08 10:51:50.622 E/AndroidRuntime( 3169): FATAL EXCEPTION: main
08-08 10:51:50.622 E/AndroidRuntime( 3169): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.android.settings/com.android.settings.SubSettings}: android.app.Fragment$InstantiationException: Unable to instantiate fragment com.android.settings.AppPreferInstallLocation: make sure class name exists, is public, and has an empty constructor that is public
08-08 10:51:50.622 E/AndroidRuntime( 3169): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
08-08 10:51:50.622 E/AndroidRuntime( 3169): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
08-08 10:51:50.622 E/AndroidRuntime( 3169): at android.app.ActivityThread.access$600(ActivityThread.java:123)
08-08 10:51:50.622 E/AndroidRuntime( 3169): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
08-08 10:51:50.622 E/AndroidRuntime( 3169): at android.os.Handler.dispatchMessage(Handler.java:99)
08-08 10:51:50.622 E/AndroidRuntime( 3169): at android.os.Looper.loop(Looper.java:137)
08-08 10:51:50.622 E/AndroidRuntime( 3169): at android.app.ActivityThread.main(ActivityThread.java:4424)
08-08 10:51:50.622 E/AndroidRuntime( 3169): at java.lang.reflect.Method.invokeNative(Native Method)
08-08 10:51:50.622 E/AndroidRuntime( 3169): at java.lang.reflect.Method.invoke(Method.java:511)
08-08 10:51:50.622 E/AndroidRuntime( 3169): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
08-08 10:51:50.622 E/AndroidRuntime( 3169): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
08-08 10:51:50.622 E/AndroidRuntime( 3169): at dalvik.system.NativeStart.main(Native Method)