RelativeRadioGroup.java 文件源码

/**
 * {@inheritDoc}
 */
public RelativeRadioGroup(Context context, AttributeSet attrs) {
    super(context, attrs);

    // retrieve selected radio button as requested by the user in the
    // XML layout file
    TypedArray attributes = context.obtainStyledAttributes(
            attrs, R.styleable.RelativeRadioGroup, 0, 0);

    int value = attributes.getResourceId(R.styleable.RelativeRadioGroup_checkedButton, View.NO_ID);
    if (value != View.NO_ID) {
        mCheckedId = value;
    }

    attributes.recycle();
    init();
}