如何扫描出Android系统媒体库中视频文件

日期：2020-06-06 栏目：程序人生浏览：次

Android系统启动时会去扫描系统文件，并将系统支持的视频文件（mp4,3gp,wmv）扫描到媒体库（MediaStore）中，下面代码演示如何获得这些文件的信息：

public static List<VideoInfo> sysVideoList = null;// 视频信息集合 sysVideoList = new ArrayList<VideoInfo>(); setVideoList(); private void setVideoList() { // MediaStore.Video.Thumbnails.DATA:视频缩略图的文件路径 String[] thumbColumns = { MediaStore.Video.Thumbnails.DATA, MediaStore.Video.Thumbnails.VIDEO_ID }; // MediaStore.Video.Media.DATA：视频文件路径； // MediaStore.Video.Media.DISPLAY_NAME : 视频文件名，如 testVideo.mp4 // MediaStore.Video.Media.TITLE: 视频标题 : testVideo String[] mediaColumns = { MediaStore.Video.Media._ID, MediaStore.Video.Media.DATA, MediaStore.Video.Media.TITLE, MediaStore.Video.Media.MIME_TYPE, MediaStore.Video.Media.DISPLAY_NAME }; cursor = managedQuery(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, mediaColumns, null, null, null); if(cursor==null){ Toast.makeText(SystemVideoChooseActivity.this, "没有找到可播放视频文件", 1).show(); return; } if (cursor.moveToFirst()) { do { VideoInfo info = new VideoInfo(); int id = cursor.getInt(cursor .getColumnIndex(MediaStore.Video.Media._ID)); Cursor thumbCursor = managedQuery( MediaStore.Video.Thumbnails.EXTERNAL_CONTENT_URI, thumbColumns, MediaStore.Video.Thumbnails.VIDEO_ID + "=" + id, null, null); if (thumbCursor.moveToFirst()) { info.setThumbPath(thumbCursor.getString(thumbCursor .getColumnIndex(MediaStore.Video.Thumbnails.DATA))); } info.setPath(cursor.getString(cursor .getColumnIndexOrThrow(MediaStore.Video.Media.DATA))); info.setTitle(cursor.getString(cursor .getColumnIndexOrThrow(MediaStore.Video.Media.TITLE))); info.setDisplayName(cursor.getString(cursor .getColumnIndexOrThrow(MediaStore.Video.Media.DISPLAY_NAME))); LogUtil.log(TAG, "DisplayName:"+info.getDisplayName()); info.setMimeType(cursor .getString(cursor .getColumnIndexOrThrow(MediaStore.Video.Media.MIME_TYPE))); sysVideoList.add(info); } while (cursor.moveToNext()); } }

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如何扫描出Android系统媒体库中视频文件

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