检测按下了哪个按钮 [英] Detect which button was pressed

问题描述

这是我的情况: 我以编程方式为某些按钮提供了onClickListener，但是，我无法完全处理此事件，因为我想检测按下了哪个按钮以赋予该按钮(当被按下时)一个新值.这是我对这些按钮进行编程的方式:

Here's my situation: I programmatically give some buttons an onClickListener, however, I can't fully-handle this event, because I'd like to detect which button was pressed to give to that button (when it is pressed) a new value. Here's how I program those buttons:

  final View.OnClickListener soundButtonListener = new View.OnClickListener() {
            public void onClick(View v) {
                playSound(1);

                int x = songPlay * songProgress;

                mplayer.seekTo(x);
            }
        };

        tableLayout = (TableLayout)v
                .findViewById(R.id.tableLayout);

        int number = 1;
        for (int i = 0; i < tableLayout.getChildCount(); i++) {
            TableRow row = (TableRow)tableLayout.getChildAt(i);
            for (int j = 0; j < row.getChildCount(); j++) {
                Button button = (Button) row.getChildAt(j);
                button.setText("" + number);

                button.setOnClickListener(soundButtonListener);
                songProgress = j;
                number++;
            }
        }

如您所见，它们并没有为每个听众提供点击监听器，因此当我按我的按钮时，mplayer始终会搜索到一点，因为songProgress停在64(我需要处理64个按钮).好的是，每个按钮都有一个数字(如您所看到的button.setText(" + number);)，我想检查一下它们的编号以赋予songProgress不同的值.

As you see, they haven't a click listener for each one, so when I press my button, mplayer always seekto a point, becausae songProgress stops at 64 (I have 64 buttons to handle). What is good is that I have a number for each button (as you see button.setText("" + number);), and I'd like to check what is their number to give to songProgress different values.

推荐答案

如果我正确理解，您可以执行以下操作:

If i correctly understand you can do something like this:

final View.OnClickListener soundButtonOnClickListener = new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        if(v instanceof Button) {
            Button button = (Button) v;
            String text = button.getText().toString();

            if(text == "1") {
                //...
            } else if(text == "2") {

            }
            //OR
            switch (text) {
                case "1": {
                    break;
                }
                case "2": {
                    break;
                }
                //...
            }
        }
    }
};

但是我认为最好使用标签代替文本:

But in my opinion better use tag instead of text:

//set tag for your button
button.setTag(number); 

//use this tag
Integer number = (Integer) v.getTag();
if(number != null) {
    //...
}

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