how to use radio group in android studio code example

Example 1: how to get data from radio group in android

// get selected radio button from radioGroup
            int selectedId = radioGroup.getCheckedRadioButtonId();

            // find the radiobutton by returned id
            radioButton = (RadioButton) findViewById(selectedId);

            Toast.makeText(MyAndroidAppActivity.this,
                radioButton.getText(), Toast.LENGTH_SHORT).show();

Example 2: android studio radio group horizontal

<RadioGroup
   android:id="@+id/radioG"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content" 
   android:orientation='horizontal'>