LineRecyclerViewAdapter.java 文件源码

private void setDownGradient(final ViewHolder holder) {
    GradientDrawable gd = new GradientDrawable(
            GradientDrawable.Orientation.LEFT_RIGHT,
            new int[]{holder.mItem.color, darkerColor(holder.mItem.color)});
    if (Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.JELLY_BEAN) {
        holder.mView.setBackgroundDrawable(gd);
    } else {
        holder.mView.setBackground(gd);
    }
}