android 代码设置progressBar 颜色

void test() {
    LinearLayout linearLayout = new LinearLayout(this);
    ProgressBar progressBar = new ProgressBar(this, null, android.R.attr.progressBarStyleHorizontal);
    setColors(progressBar,
            0xff0000FF,   //bgColor blue
            0xffFF0000 //progressColor red
    );

    progressBar.setProgress(50);

    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
    params.gravity = Gravity.CENTER_VERTICAL;
    params.leftMargin = 10;
    params.rightMargin = 10;
    params.height = 10;
    linearLayout.addView(progressBar, params);
    setContentView(linearLayout);
}

public void setColors(ProgressBar progressBar, int backgroundColor, int progressColor) {
    //Background
    ClipDrawable bgClipDrawable = new ClipDrawable(new ColorDrawable(backgroundColor), Gravity.LEFT, ClipDrawable.HORIZONTAL);
    bgClipDrawable.setLevel(10000);
    //Progress
    ClipDrawable progressClip = new ClipDrawable(new ColorDrawable(progressColor), Gravity.LEFT, ClipDrawable.HORIZONTAL);
    //Setup LayerDrawable and assign to progressBar
    Drawable[] progressDrawables = {bgClipDrawable, progressClip/*second*/, progressClip};
    LayerDrawable progressLayerDrawable = new LayerDrawable(progressDrawables);
    progressLayerDrawable.setId(0, android.R.id.background);
    progressLayerDrawable.setId(1, android.R.id.secondaryProgress);
    progressLayerDrawable.setId(2, android.R.id.progress);

    progressBar.setProgressDrawable(progressLayerDrawable);
}
PS: setProgress 要放在setProgressDrawable 之后