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);

}

原文：http://www.cnblogs.com/songsyl1207/p/4864652.html