Android访问媒体数据库

ContentResolver resolver = mActivity.getAndroidContext().getContentResolver();

String[] cols = {"_id","_data"};

Cursor cursor=resolver.query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, cols, "_data='"+name+"'", null, "_display_name");

图片：MediaStore.Images.Media.EXTERNAL_CONTENT_URI

视频：Video.Media.EXTERNAL_CONTENT_URI

音乐：MediaStore.Audio.Media.EXTERNAL_CONTENT_URI