带有圆角和多种颜色的进度条

经过一些研究,我发现这个班 PaintDrawable 我可以将其设置为任何视图的背景,令人惊讶的是,我可以为这个可绘制的设置一个形状,所以如果我使用 RoudRectShape 它看起来像我想要的那样圆润,我的最终代码如下:

        // mRatios is a View
        ShapeDrawable.ShaderFactory sf = new ShapeDrawable.ShaderFactory() {
            @Override
            public Shader resize(int i, int i1) {
                LinearGradient lg = new LinearGradient(0, 0, mRatios.getWidth(), 0,
                        barColorsArray,
                        barRatiosArray,
                        Shader.TileMode.REPEAT);

                return lg;
            }
        };
        PaintDrawable paintDrawable = new PaintDrawable();

        // not sure how to calculate the values here, but it works with these constants in my case
        paintDrawable.setShape(new RoundRectShape(new float[]{100,100,100,100,100,100,100,100}, null, null));
        paintDrawable.setShaderFactory(sf);
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
            mRatios.setBackgroundDrawable(paintDrawable);
        } else {
            mRatios.setBackground(paintDrawable);
        }