안드로이드에서 라디오 그룹의 선택된 인덱스를 얻는 방법

안드로이드에서 라디오 그룹의 선택된 인덱스를 얻는 방법

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Android에서 RadioGroup의 선택된 색인을 가져 오는 쉬운 방법이 있습니까? 아니면 OnCheckedChangeListener를 사용하여 변경 사항을 듣고 마지막으로 선택한 색인을 보유하고있는 항목을 가져야합니까?

XML 예 :

<RadioGroup android:id="@+id/group1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="vertical">
    <RadioButton android:id="@+id/radio1" android:text="option 1" android:layout_width="wrap_content" android:layout_height="wrap_content" />
    <RadioButton android:id="@+id/radio2" android:text="option 2" android:layout_width="wrap_content" android:layout_height="wrap_content" />
    <RadioButton android:id="@+id/radio3" android:text="option 3" android:layout_width="wrap_content" android:layout_height="wrap_content" />
    <RadioButton android:id="@+id/radio4" android:text="option 4" android:layout_width="wrap_content" android:layout_height="wrap_content" />
    <RadioButton android:id="@+id/radio5" android:text="option 5" android:layout_width="wrap_content" android:layout_height="wrap_content" />
</RadioGroup>

사용자 option 3가 인덱스를 얻고 싶습니다를 선택 하면 2.

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다음과 같은 작업을 수행 할 수 있어야합니다.

int radioButtonID = radioButtonGroup.getCheckedRadioButtonId();
View radioButton = radioButtonGroup.findViewById(radioButtonID);
int idx = radioButtonGroup.indexOfChild(radioButton);

RadioGroup에 다른 Views (와 같은 TextView) 가 포함되어 있으면 indexOfChild()메서드가 잘못된 색인을 반환합니다.

에서 선택된 RadioButton텍스트 를 얻으려면 RadioGroup:

 RadioButton r = (RadioButton) radioButtonGroup.getChildAt(idx);
 String selectedtext = r.getText().toString();

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이것은 작동해야합니다.

int index = myRadioGroup.indexOfChild(findViewById(myRadioGroup.getCheckedRadioButtonId()));

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라디오 그룹에 대한 참조를 가지고 getCheckedRadioButtonId ()체크 라디오 버튼 ID를 얻는 데 사용할 수 있습니다. 봐 여기

RadioGroup radioGroup = (RadioGroup)findViewById(R.id.radio_group);

그런 다음 선택한 라디오 옵션을 가져와야합니다.

int checkedRadioButtonId = radioGroup.getCheckedRadioButtonId();
if (checkedRadioButtonId == -1) {
    // No item selected
}
else{
    if (checkedRadioButtonId == R.id.radio_button1) {
        // Do something with the button
    }
}

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이 시도

        RadioGroup  group= (RadioGroup) getView().findViewById(R.id.radioGroup);
        group.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup radioGroup, int i) {
                View radioButton = radioGroup.findViewById(i);
                int index = radioGroup.indexOfChild(radioButton);
            }
        });

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You can either use OnCheckedChangeListener or can use getCheckedRadioButtonId()

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You can use:

RadioButton rb = (RadioButton) findViewById(rg.getCheckedRadioButtonId());

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//use to get the id of selected item

int selectedID = myRadioGroup.getCheckedRadioButtonId();

//get the view of the selected item

View selectedView = (View)findViewById( selectedID);

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It worked perfectly for me in this way:

    RadioGroup radioGroup = (RadioGroup) findViewById(R.id.radio_group);
    int radioButtonID = radioGroup.getCheckedRadioButtonId();
    RadioButton radioButton = (RadioButton) radioGroup.findViewById(radioButtonID);
    String selectedtext = (String) radioButton.getText();

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All you need is to set values first to your RadioButton, for example:

RadioButton radioButton = (RadioButton)findViewById(R.id.radioButton);      
radioButton.setId(1);        //some int value

and then whenever this spacific radioButton will be chosen you can pull its value by the Id you gave it with

RadioGroup radioGroup = (RadioGroup)findViewById(R.id.radioGroup);                     
int whichIndex = radioGroup.getCheckedRadioButtonId(); //of course the radioButton
                                                       //should be inside the "radioGroup"
                                                       //in the XML

Cheers!

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radioSexGroup=(RadioGroup)findViewById(R.id.radioGroup);

  btnDisplay=(Button)findViewById(R.id.button);

  btnDisplay.setOnClickListener(new View.OnClickListener() {
     @Override
     public void onClick(View v) {
        int selectedId=radioSexGroup.getCheckedRadioButtonId();
        radioSexButton=(RadioButton)findViewById(selectedId);
        Toast.makeText(MainActivity.this,radioSexButton.getText(),Toast.LENGTH_SHORT).show();
     }
  });

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 int index_selected = radio_grp.indexOfChild(radio_grp
                .findViewById(radio_grp.getCheckedRadioButtonId()));

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you can do

findViewById

from the radio group .

Here it is sample :

((RadioButton)my_radio_group.findViewById(R.id.radiobtn_veg)).setChecked(true);

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just use this:

    int index = 2;
    boolean option3Checked = radioGroup.getCheckedRadioButtonId() == radioGroup.getChildAt(2).getId();

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You can simply

-declare the radio group and a radio button out of onCreate method

private RadioGroup GrupName;
private RadioButton NameButton;

-set the view id in the onCreate method

GrupName = (RadioGroup) findViewById(R.id.radioGroupid);

-take the radiobutton id selected using

int id = GroupName.getCheckedRadioButtonId();

-use the id to match the buttonselected view

NameButton = (RadioButton) findViewById(id);

-finally get the value of the radio button

String valueExpected = NameButton.getText().toString();

--- PS: IF YOU WANT AN INT VALUE, THEN YOU CAN CAST IT

int valueExpectedIn = Integer.parseInt(valueExpected);

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Kotlin:

val selectedIndex = radioButtonGroup?.indexOfChild(
  radioButtonGroup?.findViewById(
    radioButtonGroup.getCheckedRadioButtonId())
)

참고URL : https://stackoverflow.com/questions/6440259/how-to-get-the-selected-index-of-a-radiogroup-in-android