工信部网站备案查询验证码错误,wordpress维护服务,百度搜索网站图片,wordpress待发布Android系统启动时会去扫描系统文件#xff0c;并将系统支持的视频文件(mp4,3gp,wmv)扫描到媒体库(MediaStore)中#xff0c;下面代码演示如何获得这些文件的信息#xff1a;publicstatic List sysVideoList null;// 视频信息集合sysVideoList new ArrayList();setVideoLi…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publicstatic List sysVideoList null;// 视频信息集合sysVideoList new ArrayList();setVideoList();privatevoid 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 : testVideoString[] 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(cursornull){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());}}有一点需要注意的是系统的媒体库并不会在我们添加视频文件后自动更新我们如何去手动扫描媒体库或者重启系统才能从媒体库中得到更新的视频文件sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse(file:// Environment.getExternalStorageDirectory())));原文http://www.cnblogs.com/wangfeng520/p/5089726.html
