Keyboard events handling in Android

Keyboard events handling in Android

In Android, keyboard events are handled using the KeyEvent class. This class provides constants for different key events like KEYCODE_ENTER, KEYCODE_BACK, KEYCODE_HOME, etc.

To handle a keyboard event, you can override the onKeyDown or onKeyUp method of your Activity or View class. For example, the following code shows how to handle the KEYCODE_ENTER event:

@Override

public boolean onKeyDown(int keyCode, KeyEvent event) {

    if (keyCode == KeyEvent.KEYCODE_ENTER) {

        // Handle the ENTER key press

        return true;

    }

    return super.onKeyDown(keyCode, event);

}

Similarly, the onKeyUp method can be used to handle the release of a key:

@Override

public boolean onKeyUp(int keyCode, KeyEvent event) {

    if (keyCode == KeyEvent.KEYCODE_ENTER) {

        // Handle the ENTER key release

        return true;

    }

    return super.onKeyUp(keyCode, event);

} Note that you should return true from these methods if you have handled the event, otherwise return false to allow the system to handle it.

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