Question

我用radiobutton创建了动态放射性组。现在我想从动态放射性组中获取值。以下是我的代码

final RadioGroup rg = new RadioGroup(this);
            rg.setId(questionNo);

            RadioButton[] rb = new RadioButton[answers.length()];

            for (int i = 0; i < answers.length(); i++) {
                JSONObject answerObject = answers.getJSONObject(i);
                rb[i] = new RadioButton(this);
                rb[i].setText(answerObject.getString("AnswerValue"));
                rb[i].setId(answerObject.getInt("AnswerId"));

                rg.addView(rb[i]);
            }



rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {

                    @Override
                    public void onCheckedChanged(RadioGroup arg0, int arg1) {
                        int selectedId = rg.getCheckedRadioButtonId();
                        Log.i("ID", String.valueOf(selectedId));

                    }
                });

按钮点击事件

submit_button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                if(rg.getCheckedRadioButtonId()!=-1){
                int id= rg.getCheckedRadioButtonId();
                View radioButton = rg.findViewById(id);
                int radioId = rg.indexOfChild(radioButton);
                RadioButton btn = (RadioButton) rg.getChildAt(radioId);
                String selection = (String) btn.getText();
                Log.i("selection", selection);

            }
            }
        });

我只收到广播组的最后一个索引。

Answer 1

你可以通过这种方式解决这个问题

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

我知道为时已晚，但这可能有助于其他人

创建动态Radiobutton组时，创建父布局（线性布局或相对布局）

所有广播组都将成为该版面的子节点，所有单选按钮都将成为特定广播组的子节点。

创建动态广播组的号码

在父布局中创建所有动态广播组
将所有单选按钮添加到群组

将所有广播组添加到父版式

    public RadioButton[] rb;
    public RadioGroup grp;
    public LinearLayout layoutmain;             //Parent layout

for(int i=0;i<qus.size();i++)                   //No of Questions
{

    rb = new RadioButton[size];
    grp = new RadioGroup(this);

    grp.setId(a+qus.get(i).qusetionId);

    for(int j=0;j<qus.get(i).choices.size();j++)    //No of Radio button in radio group
    {

        rb[j] = new RadioButton(this);
        rb[j].setText(qus.get(i).choices.get(j).getChoiceText());
        grp.addView(rb[j]);                         // adding button to group

    }
    layoutmain.addView(grp);                        // adding group to layout
}

检索所有选定的按钮任务

来自父母，布局得到所有孩子
使用子实例
为该广播组创建一个对象

使用该对象获取所选单选按钮

Button bt = (Button) findViewById(R.id.button);
bt.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {

        for(int i=0;i<layoutmain.getChildCount();i++)  //From the parent layout (Linear Layout) get the child
        {
            View child = layoutmain.getChildAt(i);  

            if(child instanceof RadioGroup)     //Check weather its RadioGroup using its INSTANCE
            {
                RadioGroup rg = (RadioGroup) child; //create a RadioButton for each group
                int selectedId = rg.getCheckedRadioButtonId(); // get the selected button

                    RadioButton radiochecked = (RadioButton) findViewById(selectedId);
                    Log.e("Radio",radiochecked.getText().toString());   //from the button get the selected text

            }
        }
    } });

如何从动态radiogroup android获取值？

2 个答案: