设置内存卡资源图片

 String imageDir = Environment.getExternalStorageDirectory().getPath() + "/theme/";
                    mTextViewAppUpload.setTextColor(getResources().getColor(R.color.white));
                    mTextViewAppUpdate.setTextColor(getResources().getColor(R.color.white));
                   
                    head_bgView.setBackgroundDrawable(Drawable.createFromPath(imageDir + "index_head_bj.png"));
                   
                    lineIV.setImageDrawable(Drawable.createFromPath(imageDir + "user_line.png"));
                    iv_back.setImageDrawable(Drawable.createFromPath(imageDir + "second_logo_selected.png"));
                    headShortcutIcon.setImageDrawable(Drawable.createFromPath(imageDir + "head_arrow.png"));