Android:如何获取用户选择的动态创建单选按钮的文本？

Question

如何检索用户选择的动态创建的单选按钮的文本？这是我的代码:

RadioGroup radiogroup = (RadioGroup) findViewById(R.id.rdbGp1); 
        // layout params to use when adding each radio button 
        LinearLayout.LayoutParams layoutParams = new 
RadioGroup.LayoutParams( 
                RadioGroup.LayoutParams.WRAP_CONTENT, 
                RadioGroup.LayoutParams.WRAP_CONTENT); 
 for (int i = 0; i < 4; i++){ 
            final RadioButton newRadioButton = new RadioButton(this); 
            c3 = db.getAns(3); 
        for (int j=0;j<i;j++) 
            c3.moveToNext(); 
           label = c3.getString(0); 
        newRadioButton.setText(label); 
        newRadioButton.setId(6); 
        radiogroup.addView(newRadioButton, layoutParams); 

等待回复,Maqsood

Answer 1

惊讶的是,没有一种更简单的方法.如果您打算做一些特殊的事情,但根据哪个按钮,你应该检查ID而不是Label.

radiogroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
         void onCheckedChanged(RadioGroup rg, int checkedId) {
              for(int i=0; i<rg.getChildCount(); i++) {
                   RadioButton btn = (RadioButton) rg.getChildAt(i);
                   if(btn.getId() == checkedId) {
                        String text = btn.getText();
                        // do something with text
                        return;
                   }
              }
         }
    });

Answer 2

我认为有一种更简单的方法可以做到这一点......

我刚刚创建了一个单选按钮,其中的按钮ID已经过检查,工作正常.

解决方案看起来像这样

RadioButton TheTextIsHere = (RadioButton) findViewById(RadioGroup.getCheckedRadioButtonId());

所以现在你有了一个RadioButton,它引用了放入RadioGroup的RadioButton然后你就可以轻松地......

TheTextIsHere.getText().toString();

希望我帮助:)