Android OnClickListener - 识别按钮 [英] Android OnClickListener - identify a button
本文介绍了Android OnClickListener - 识别按钮的处理方法,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
我有活动:
public class Mtest extends Activity {
Button b1;
Button b2;
public void onCreate(Bundle savedInstanceState) {
...
b1 = (Button) findViewById(R.id.b1);
b2 = (Button) findViewById(R.id.b2);
b1.setOnClickListener(myhandler);
b2.setOnClickListener(myhandler);
...
}
View.OnClickListener myhandler = new View.OnClickListener() {
public void onClick(View v) {
// MY QUESTION STARTS HERE!!!
// IF b1 do this
// IF b2 do this
// MY QUESTION ENDS HERE!!!
}
}
}
我如何检查哪个按钮被点击了?
How do I check which button has been clicked?
推荐答案
您将学习的方法很简单,就是:
You will learn the way to do it, in an easy way, is:
public class Mtest extends Activity {
Button b1;
Button b2;
public void onCreate(Bundle savedInstanceState) {
...
b1 = (Button) findViewById(R.id.b1);
b2 = (Button) findViewById(R.id.b2);
b1.setOnClickListener(myhandler1);
b2.setOnClickListener(myhandler2);
...
}
View.OnClickListener myhandler1 = new View.OnClickListener() {
public void onClick(View v) {
// it was the 1st button
}
};
View.OnClickListener myhandler2 = new View.OnClickListener() {
public void onClick(View v) {
// it was the 2nd button
}
};
}
或者,如果您只使用一个点击监听器,您可以这样做:
Or, if you are working with just one clicklistener, you can do:
View.OnClickListener myOnlyhandler = new View.OnClickListener() {
public void onClick(View v) {
switch(v.getId()) {
case R.id.b1:
// it was the first button
break;
case R.id.b2:
// it was the second button
break;
}
}
}
不过,我不建议这样做,因为您必须为您使用的每个按钮添加一个 if
.这很难维护.
Though, I don't recommend doing it that way since you will have to add an if
for each button you use. That's hard to maintain.
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