Java 为每个循环按钮提供Id，并根据按钮的Id设置单击侦听器

我有一个程序，将检索一些数据从数据库，并显示在屏幕上的一些按钮。如何为创建的每个按钮提供Id，并使button.OnClickListener为每个具有正确Id的按钮提供Id

这是我的密码：

private void selectAllGroup() {
// TODO Auto-generated method stub
MyGroup = (TextView) findViewById(R.id.tvListGroup);
Database allGroup = new Database(MyGroupActivity.this);
allGroup.open();
listGroup = allGroup.countHowManyGroups(username);
layout = (LinearLayout) findViewById(R.id.LLMyGroup);

String groupName[] = allGroup.fetchGroupName(username);

for (int i = 0; i < listGroup; i++) {
    newBt = new Button(this);
    newBt.setText(groupName[i]);
    layout.addView(newBt);
}

allGroup.close();
}

---

您可以将for循环内的每个按钮的标签设置为

    newBt.setTag(i);
    newBt.setOnClickListener(this);

在OnClick方法中，将标记作为如下位置

    @Override
    public void onClick(View view){
        int buttonClicked = (int) view.getTag();
        // Do your code here according to the position of the button clicked
    }

---

关于您的问题，我如何为创建的每个按钮提供Id，并为每个具有正确Id的按钮创建button.OnClickListener

只需在for循环中使用：

newBt.setId(id to set) // Should be positive, doesn't have to be unique
newBt.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                //The View carries the Id
                v.getId();
                //Then you can simply set up a fast Switch-case for example
                switch (v.getid()) {
                case 1:
                       break;
                default:
                       break;
            }
        });

更新

没问题，只需在onClick方法中将按钮强制转换到视图并获取字符串：

newBt.setId(id to set) // Should be positive, doesn't have to be unique
newBt.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Button myClickedButton = (Button) v;
                String buttonText = myClickedButton.getText();

                //Do something with your logic here. 
                //You can also Switch-case on a String ! But AFAIK 
                //it's only possible on Java Compiler 1.7 or above. 
                //But Eclipse will guide you if you want to Switch on String
        });

---

您不需要id来收听按钮点击事件。

@piyush关于piyush Ansare:如果他不想为每个按钮提供相同的逻辑，他怎么知道哪个按钮被点击了？。您好，谢谢您的回答，，如果我想从点击的按钮中获取按钮文本呢？它能通过吗？

newBt.setId(id to set) // Should be positive, doesn't have to be unique
newBt.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Button myClickedButton = (Button) v;
                String buttonText = myClickedButton.getText();

                //Do something with your logic here. 
                //You can also Switch-case on a String ! But AFAIK 
                //it's only possible on Java Compiler 1.7 or above. 
                //But Eclipse will guide you if you want to Switch on String
        });

for (int i = 0; i < listGroup; i++) {
    newBt = new Button(this);
    newBt.setText(groupName[i]);
   newBt.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
               //write your logic to do the work you need when button is clicked.You do not need id for this.
            }
        });
    layout.addView(newBt);
}