CheckRadioButton

可以取消选中状态的radioButton

  @Override
    public void toggle() {
        // we override to prevent toggle when the radio is checked
        super.toggle();
    }

#####主要改变原来RadioButton中toggle()方法,其他都不变.在类CheckRadioButton.class中查看

this radioButton can cancel checked state like {@link android.widget.CheckBox}

public class CheckRadioButton extends CompoundButton {
    public CheckRadioButton(Context context) {
        this(context,null);
    }

    public CheckRadioButton(Context context, AttributeSet attrs) {
        this(context, attrs,android.R.attr.radioButtonStyle);
    }

    public CheckRadioButton(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    public void toggle() {
        // we override to prevent toggle when the radio is checked
        super.toggle();
    }
}