ResUtil.java 文件源码

/**
 * Generate bg drawable drawable.
 *
 * @param radii        the radii
 * @param pressColor   the press color
 * @param defaultColor the default color
 * @return the drawable
 */
public static Drawable generateRoundDrawable(Resources res, float radii, int pressColor, int defaultColor) {

    radii = dpToPx(res, radii);

    //外环的圆角矩形
    float[] outRadii = new float[]{radii, radii, radii, radii, radii, radii, radii, radii};//四个角的 圆角幅度,8个可以设置的值,每个角都有2个边 2*4=8个

    //按下状态
    Shape roundRectShape = new RoundRectShape(outRadii, null, null);//圆角背景
    ShapeDrawable shopDrawablePress = new ShapeDrawable(roundRectShape);//圆角shape
    shopDrawablePress.getPaint().setColor(pressColor);//设置颜色

    //正常状态
    Shape roundRectShapeNormal = new RoundRectShape(outRadii, null, null);
    ShapeDrawable shopDrawableNormal = new ShapeDrawable(roundRectShapeNormal);
    shopDrawableNormal.getPaint().setColor(defaultColor);

    StateListDrawable bgStateDrawable = new StateListDrawable();//状态shape
    bgStateDrawable.addState(new int[]{android.R.attr.state_pressed}, shopDrawablePress);//按下状态
    bgStateDrawable.addState(new int[]{}, shopDrawableNormal);//其他状态

    return bgStateDrawable;
}