Android 监听Home键

?private?final?BroadcastReceiver?homeReceiver?=?new?BroadcastReceiver()?{
??????final?String?SYS_KEY?=?"reason";?//标注下这里必须是这么一个字符串值

??????final?String?SYS_HOME_KEY?=?"homekey";//标注下这里必须是这么一个字符串值
??
??????@Override
??????public?void?onReceive(Context?context,?Intent?intent)?{
????????String?action?=?intent.getAction();
???????if?(action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)){
????????????String?reason?=?intent.getStringExtra(SYS_KEY);
????????????if?(reason?!=?null?&&?reason.equals(SYS_HOME_KEY)){
?????????????Log.i("TT",?"##################home键监听");
?????????????
????????????}
?????????}
??????}
?};

??IntentFilter?homeFilter?=?new?IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
??registerReceiver(homeReceiver,?homeFilter);

?@Override
????protected?void?onDestroy()?{
?????super.onDestroy();
?????if?(homeReceiver?!=?null){
???????????try{
?????????????unregisterReceiver(homeReceiver);
???????????}catch(Exception?e){
????????????Log.e("TT",?"unregisterReceiver?homeReceiver?failure?:"+e.getCause());
???????????}
????????}
????}