Android: 发送虚拟按键

最新推荐文章于 2024-09-24 14:23:04 发布

最新推荐文章于 2024-09-24 14:23:04 发布 · 249 阅读

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#移动开发

本文介绍了一个用于发送键盘事件的私有方法sendKeyEvent。该方法接受一个整数参数keyCode，代表要触发的键盘事件的键码，并通过ACTION_DOWN和ACTION_UP两个步骤来模拟按键操作。

/** * Send a single key event. * * @param event is a string representing the keycode of the key event you * want to execute. */ private void sendKeyEvent(int keyCode) { int eventCode = keyCode; long now = SystemClock.uptimeMillis(); try { KeyEvent down = new KeyEvent(now, now, KeyEvent.ACTION_DOWN, eventCode, 0); KeyEvent up = new KeyEvent(now, now, KeyEvent.ACTION_UP, eventCode, 0); (IWindowManager.Stub .asInterface(ServiceManager.getService("window"))) .injectInputEventNoWait(down); (IWindowManager.Stub .asInterface(ServiceManager.getService("window"))) .injectInputEventNoWait(up); } catch (RemoteException e) { Log.i(TAG, "DeadOjbectException"); } }sendKeyEvent(KeyEvent.KEYCODE_BACK);