将自定义编程创建的可绘制对象设置为状态的单选按钮

set Custom Programatically created drawable to radioButton for states

我想将一个以编程方式创建的 drawable 设置为单选按钮的选中和未选中状态,但它不起作用我的代码如下,

绘制矩形框的代码,

public static GradientDrawable squareView(int backgroundColor, int borderColor)
{
    GradientDrawable shape = new GradientDrawable();
    shape.setShape(GradientDrawable.RECTANGLE);
    //shape.setCornerRadii(new float[] { 8, 8, 8, 8, 0, 0, 0, 0 });
    shape.setColor(backgroundColor);
    shape.setStroke(3, borderColor);
    return shape;
}

用于设置以编程方式创建的视图 (squareview) 以设置为单选按钮的代码,

public static void setChecked_Selector(Context context,RadioButton view) {
    try {
        Drawable pressed=squareView(ContextCompat.getColor(context,R.color.colorBlue),ContextCompat.getColor(context,R.color.colorRed));//new BadgeDrawable(context,colorPressed);
        Drawable normal=squareView(ContextCompat.getColor(context,R.color.colorwhite),ContextCompat.getColor(context,R.color.colorRed));

        StateListDrawable states = new StateListDrawable();
        states.addState(new int[]{android.R.attr.state_checked,},pressed);
        states.addState(new int[]{android.R.attr.state_pressed}, pressed);

        states.addState(new int[]{android.R.attr.state_checked, android.R.attr.state_enabled}, pressed);
        states.addState(new int[]{android.R.attr.state_checked, -android.R.attr.state_enabled}, pressed);

        states.addState(new int[]{}, normal);
        view.setButtonDrawable(states);
    } catch (Exception e) {
    }
}

经过一些变通,我意识到问题是可绘制对象没有任何大小。我不确定您应该提供多大尺寸,但只需添加以下行即可使您的 RadioButton 可见:

shape.setSize(50, 50);

我建议在 dimens.xml 中为其设置适当的大小,然后改用它:

int size = context.getResources().getDimensionPixelSize(R.dimen.radio_button_size);
shape.setSize(size, size);