你可以为不同的按钮使用相同的OnClickListener吗?

时间:2011-05-26 03:00:23

标签: android button

在android中,我可以为不同的按钮使用相同的OnClickListener吗?如果是,我如何从哪个按钮生成点击?我目前有4个按钮,每个按钮都有自己的OnClickListener。除了单击按钮的文本之外,每个OnClickListener都执行相同的操作。我想创建一个OnClickListener,但我无法弄清楚如何确定单击哪个按钮。谢谢

protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);

        mTts = new TextToSpeech(this, new TextToSpeech.OnInitListener() {

            @Override
            public void onInit(int arg0) {
                // TODO Auto-generated method stub

            }
        });
        setContentView(R.layout.home);
        Button button1 = (Button)findViewById(R.id.button1);
        Button button2 = (Button)findViewById(R.id.button2);
        Button button3 = (Button)findViewById(R.id.button3);
        Button button4 = (Button)findViewById(R.id.button4);

        //Load First Word
        button1.setOnClickListener(button1ClickListener);
        button2.setOnClickListener(button2ClickListener);
        button3.setOnClickListener(button3ClickListener);
        button4.setOnClickListener(button4ClickListener);

    }

侦听器的代码,其中不同部分用粗体

private OnClickListener button1ClickListener = new View.OnClickListener() {
    @Override
    public void onClick(View arg0) {
        **Button button = (Button)findViewById(R.id.button1);**
        handleButtonClick(button);
    }
};

private OnClickListener button2ClickListener = new View.OnClickListener() {
    @Override
    public void onClick(View arg0) {
        **Button button = (Button)findViewById(R.id.button2);**
        handleButtonClick(button);

    }
};

private OnClickListener button3ClickListener = new View.OnClickListener() {
    @Override
    public void onClick(View arg0) {
        **Button button = (Button)findViewById(R.id.button3);**
        handleButtonClick(button);

    }
};

private OnClickListener button4ClickListener = new View.OnClickListener() {
    @Override
    public void onClick(View arg0) {
        **Button button = (Button)findViewById(R.id.button4);**
        handleButtonClick(button);

    }
};

handleButtonclick的代码

private void handleButtonClick(Button button) {
        if(button.getText().equals(currentWord)){
            currentScore += availableScore;
            TextView score = (TextView)findViewById(R.id.textViewScore);
            score.setText(String.valueOf(score));
            currentIndex++;
            availableScore = 4;
            InitializeGame();
        }
        else{
            availableScore--;
            button.setEnabled(false);
        }
    }

根据Karthik的推荐,我将我的代码修改为以下内容:

protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);

        mTts = new TextToSpeech(this, new TextToSpeech.OnInitListener() {

            @Override
            public void onInit(int arg0) {
                // TODO Auto-generated method stub

            }
        });
        setContentView(R.layout.home);
        Button button1 = (Button)findViewById(R.id.button1);
        Button button2 = (Button)findViewById(R.id.button2);
        Button button3 = (Button)findViewById(R.id.button3);
        Button button4 = (Button)findViewById(R.id.button4);

        //Load First Word
        button1.setOnClickListener(buttonClickListener);
        button2.setOnClickListener(buttonClickListener);
        button3.setOnClickListener(buttonClickListener);
        button4.setOnClickListener(buttonClickListener);

    }

OnClickListenerCode

private OnClickListener buttonClickListener = new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {
            handleButtonClick((Button)arg0);
        }
    };

2 个答案:

答案 0 :(得分:9)

是的,这是可能的。我在下面写了一个应该相对简单的例子。

像往常一样,为所有按钮添加OnClickListener,如下所示:

btn1.setOnClickListener(this);
btn2.setOnClickListener(this);
btn3.setOnClickListener(this);

然后添加onClick()事件,如下所示:

@Override
public void onClick(View v) {
    // TODO Auto-generated method stub
    if(v == btn1){
        //Things to do  
    }
    if(v == btn2){
        //Things to do      
    }
    if(v == btn3){
        //Things to do  
    } 
}

这应该可以正常工作。不要忘记为你的onCreate所在的类实现View.OnClickListener,否则所有那些设置上面的OnClickListener的语句都是不正确的。

答案 1 :(得分:3)

    protected void onCreate(Bundle savedInstanceState) {
            // TODO Auto-generated method stub
            super.onCreate(savedInstanceState);

            mTts = new TextToSpeech(this, new TextToSpeech.OnInitListener() {

                @Override
                public void onInit(int arg0) {
                    // TODO Auto-generated method stub

                }
            });
            setContentView(R.layout.home);
            Button button1 = (Button)findViewById(R.id.button1);
            Button button2 = (Button)findViewById(R.id.button2);
            Button button3 = (Button)findViewById(R.id.button3);
            Button button4 = (Button)findViewById(R.id.button4);

            //Load First Word
            button1.setOnClickListener(button1ClickListener);
            button2.setOnClickListener(button2ClickListener);
            button3.setOnClickListener(button3ClickListener);
            button4.setOnClickListener(button4ClickListener);

        }

    @Override
        public void onClick(View v)

    {

    int id = v.getId();
    switch (id) {  
    case R.id.button1:  
    //your code
    break;
 case R.id.button2:  

    break;
 case R.id.button3:  

    break;
    }
    }