How to get values from dynamic radiogroup android?

问题

Hi i created dynamic radiogroup with radiobutton.Now i want to get values from dynamic radiogroup. Below is my code

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));

                    }
                });

Button click event

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);

            }
            }
        });

I am getting only last index of the radio group.

回答1:

You Can Achive This Soln By This Way

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;
               }
          }
     }
});

回答2:

I know it's too late, But this may help someone else

While creating your Dynamic Radiobutton Group, Create a parent layout(Linear layout or Relative Layout)

All radio groups will be the child of that Layout and all radio button will be a child of the specific radio group.

Creating No of Dynamic Radio Group

Create all Dynamic radio group in a parent layout
Add all radio button to a group

Add all radio group to the parent layout

    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
}

Retrieve All selected button task

From parent, layout get all child
Find all radio group using the child Instance
Create an object for that radio group

using that object get the selected radio button

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

            }
        }
    } });

来源：https://stackoverflow.com/questions/30627623/how-to-get-values-from-dynamic-radiogroup-android

标签

android

radio-group