本文介绍了如何将关键事件发送到编辑文本的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
例如,将退格键发送到编辑文本控件以删除字符或发送字符代码(如112)以编程方式在edittext控件中附加字符。
For example, send a backspace key to the edit text control to remove a character or send a char code like 112 to append a character in the edittext control programmatically.
实际上,我需要一个方法,如
Actually, I need a method like
void onKeyReceived(int keyCode)
{
// here I would like to append the keyCode to EditText, I know how to add a visible character, but what about some special keys, like arrow key, backspace key.
}
推荐答案
发送模拟退格键按下EditText,您必须发送按键和释放事件。像这样:
To send a simulated backspace key press to an EditText you have to send both key press and release events. Like this:
mEditText.dispatchKeyEvent(new KeyEvent(0, 0, KeyEvent.ACTION_DOWN,
KeyEvent.KEYCODE_DEL, 0));
mEditText.dispatchKeyEvent(new KeyEvent(0, 0, KeyEvent.ACTION_UP,
KeyEvent.KEYCODE_DEL, 0));
这可用于发送任何其他密钥代码,而不仅仅是删除。
This can be used to send any other key code, not just delete.
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