调用系统程序打开指定的图片

File file = new File(advInfo.strFullImagePath);
if( file != null && file.isFile() == true){
Intent intent = new Intent();
intent.setAction(android.content.Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(file), "image/*");
SNAdvView.this.getContext().startActivity(intent);}
}