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Android WindowManager 监听返回键及home键

2024-07-08 03:28:30   259人阅读

一、监听home键盘，Android Home键系统负责监听，捕获后系统自动处理。有时候，我们需要监听home键处理自己的逻辑，监听方法如下:

    /**     * 监听home键广播     */    private final static BroadcastReceiver homeListenerReceiver = new BroadcastReceiver() {        final String SYSTEM_DIALOG_REASON_KEY = "reason";        final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey";        @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_DIALOG_REASON_KEY);                if (reason != null && reason.equals(SYSTEM_DIALOG_REASON_HOME_KEY)) {                    // 处理自己的逻辑                }            }        }    };

在创建View时注册ReceiverIntentFilter homeFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);context.registerReceiver(homeListenerReceiver, homeFilter);
在View消失时反注册Receiver// 反注册home监听if (homeListenerReceiver != null) {   context.unregisterReceiver(homeListenerReceiver);}
二、WindowManager view中监听返回及menu键
重写dispatchKeyEvent    @Override    public boolean dispatchKeyEvent(KeyEvent event) {        switch (event.getKeyCode()) {            case KeyEvent.KEYCODE_BACK:            case KeyEvent.KEYCODE_MENU:                // 处理自己的逻辑break;            default:                break;        }        return super.dispatchKeyEvent(event);    }
 






























        

            
                
                  
                
                

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