-
Home键是一个系统的按钮，我们无法通过onKeyDown进行拦截，它是拦截不到的，我们只能得到他在什么时候被按下了。就是通过广播接收者
public class HomeKeyEventBroadCastReceiver extends BroadcastReceiver {
static final String SYSTEM_REASON = "reason";
static final String SYSTEM_HOME_KEY = "homekey";
static final String SYSTEM_RECENT_APPS = "recentapps";
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {
String reason = intent.getStringExtra(SYSTEM_REASON);
if (reason != null) {
if (reason.equals(SYSTEM_HOME_KEY)) {
// home key处理点
} else if (reason.equals(SYSTEM_RECENT_APPS)) {
// long home key处理点
}
}
}
}
}
- 在
Activity中去注册这个广播接收者
receiver = new HomeKeyEventBroadCastReceiver();
registerReceiver(receiver, new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS));
- 在
Activity销毁的方法中去取消注册
unRegisterReceiver(receiver);
