Android - java.lang.ClassCastException: cannot be cast to
Error:
threadid=1: thread exiting with uncaught exception (group=0x415c5940)
FATAL EXCEPTION: main
java.lang.RuntimeException: Error receiving broadcast Intent { act=android.net.wifi.p2p.CONNECTION_STATE_CHANGE flg=0x28000010 (has extras) } in com.example.wifidirectdemo.WifiDirectBroadcastReceiver@421207d0
at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:791)
at android.os.Handler.handleCallback(Handler.java:730)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5265)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:760)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassCastException: com.example.wifidirectdemo.DeviceListFragment cannot be cast to com.example.wifidirectdemo.DeviceDetailFragment
at com.example.wifidirectdemo.MainActivity.resetData(MainActivity.java:76)
at com.example.wifidirectdemo.WifiDirectBroadcastReceiver.onReceive(WifiDirectBroadcastReceiver.java:61)
at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:770)
... 9 more
进过检查发现问题出在xml配置文件：
第二个fragment的名称应该是DeviceDetailFragment，代码Java代码没有问题，在绑定组件时出现问题，从而导致Class需要强行转换并失败。
结合上一次组件未在Java代码中绑定出现的空指针异常，已经连续两个错误出现在xml布局文件和Java代码交互上了，代码运行出现问题，不能只盯着功能代码(Java)。