RadioGroup 单选框组

布局:
  <RadioGroup
        android:id="@+id/groptemp"
        android:layout_width="240dp"
        android:layout_height="220dp"
        android:layout_marginEnd="88dp"
        android:layout_marginStart="56dp"
        android:layout_marginTop="59dp"
        android:orientation="horizontal"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <RadioButton
            android:id="@+id/radioButton"
            android:layout_height="50dp"
            android:layout_weight="80"
            android:checked="true"
            android:text="女" />

        <RadioButton
            android:id="@+id/radioButton1"
            android:layout_height="50dp"
            android:layout_weight="80"
            android:checked="false"
            android:text="男" />

    </RadioGroup>

实现:
     RadioGroup groupbtn = (RadioGroup) findViewById(R.id.groptemp);

        groupbtn.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup radioGroup, int i) {

                switch (i) {
                    case R.id.radioButton:

                        Log.i("tag", "onCheckedChanged: 女");

                        break;

                    case R.id.radioButton1:


                        Log.i("tag", "onCheckedChanged: 男");
                        break;

                    default:
                        break;

                }
            }
        });

效果:

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