设置单选按钮RadioGroup

<RadioGroup
android:id="@+id/_stock"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<RadioButton
android:id="@+id/stock_0"
android:layout_width="0dp"
android:layout_height="30dp"
android:layout_weight="1"
android:gravity="center"
android:checked="true"
android:button="@null"
android:background="@drawable/radio_bg"
android:textColor="@drawable/radio_font"
android:text="@string/quote_stock_0"/>
<RadioButton
android:id="@+id/stock_1"
android:layout_width="0dp"
android:layout_height="30dp"
android:layout_weight="1"
android:gravity="center"
android:button="@null"
android:background="@drawable/radio_bg"
android:textColor="@drawable/radio_font"
android:text="@string/quote_stock_1"/>
</RadioGroup>

private int stock; //现货（0：无，1：有）

RadioGroup stockGroup = (RadioGroup)findViewById(R.id._stock);
stockGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
int id = group.getCheckedRadioButtonId();
if(id==R.id.stock_1) {
stock = 1;
} else {
stock = 0;
}
}
});