DefaultHeaderTransformer.java 文件源码

private void applyProgressBarSettings() {
    if (mHeaderProgressBar != null) {
        final int strokeWidth = mHeaderProgressBar.getResources()
                .getDimensionPixelSize(R.dimen.ptr_progress_bar_stroke_width);

        mHeaderProgressBar.setIndeterminateDrawable(
                new SmoothProgressDrawable.Builder(mHeaderProgressBar.getContext())
                        .color(mProgressDrawableColor)
                        .width(strokeWidth)
                        .build());

        ShapeDrawable shape = new ShapeDrawable();
        shape.setShape(new RectShape());
        shape.getPaint().setColor(mProgressDrawableColor);
        ClipDrawable clipDrawable = new ClipDrawable(shape, Gravity.CENTER, ClipDrawable.HORIZONTAL);

        mHeaderProgressBar.setProgressDrawable(clipDrawable);
    }
}