如何从软键盘上按下"完成"按键

Question

如何从软键盘捕获特定的键事件？特别是我对"完成"键很感兴趣.

Answer 1

我不太确定在接受的答案中使用了哪种听众.我使用了OnKeyListener附件EditText,它无法抓住下一个也没有完成.

然而,使用OnEditorActionListener工作,它还允许我通过比较动作值与定义的常量EditorInfo.IME_ACTION_NEXT和来区分它们EditorInfo.IME_ACTION_DONE.

editText.setOnEditorActionListener(new OnEditorActionListener() {
    @Override
    public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
        if ((actionId & EditorInfo.IME_MASK_ACTION) != 0) {
            doSomething();
            return true;
        }
        else {
            return false;
        }
    }
});

Answer 2

@ Swato的回答对我来说并不完整(并且没有编译!)所以我展示了如何对DONE和NEXT动作进行比较.

editText.setOnEditorActionListener(new OnEditorActionListener() {
    @Override
    public boolean onEditorAction(TextView view, int actionId, KeyEvent event) {
        int result = actionId & EditorInfo.IME_MASK_ACTION;
        switch(result) {
        case EditorInfo.IME_ACTION_DONE:
            // done stuff
            break;
        case EditorInfo.IME_ACTION_NEXT:
            // next stuff
            break;
        }
    }
});

另外我想指出,对于JellyBean,需要更高的OnEditorActionListener来监听'enter'或'next'而你不能使用OnKeyListener.来自文档:

由于软输入方法可以使用多种创造性的输入文本方式,因此无法保证软键盘上的任何按键都会产生关键事件:这由IME自行决定,实际上不鼓励发送此类事件.您永远不应该依赖于在软输入方法上接收任何键的KeyEvent.

参考:http://developer.android.com/reference/android/view/KeyEvent.html

Answer 3

注意:这个答案很旧,不再适用.请参阅以下答案.

您捕获KeyEvent然后检查其密钥代码.FLAG_EDITOR_ACTION用于识别来自IME的输入密钥,其输入密钥已被自动标记为"下一个"或"已完成"

if (event.getKeyCode() == KeyEvent.FLAG_EDITOR_ACTION)
    //your code here

在这里找到文档.

Answer 4

就像这样:

editText.setOnEditorActionListener(new OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView view, int actionId, KeyEvent event) {
    if(actionId == EditorInfo.IME_ACTION_DONE)
    {
       //Do Something
    }

    return false;
}
});

Answer 5

    etSearchFriends = (EditText) findViewById(R.id.etSearchConn);
    etSearchFriends.setOnKeyListener(new OnKeyListener() {
        public boolean onKey(View v, int keyCode, KeyEvent event) {
            // If the event is a key-down event on the "enter" button
            if ((event.getAction() == KeyEvent.ACTION_DOWN) &&
                (keyCode == KeyEvent.KEYCODE_ENTER)) {
                Toast.makeText(ACTIVITY_NAME.this, etSearchFriends.getText(),Toast.LENGTH_SHORT).show();
              return true;
            }
            return false;
        }

    });