Android獲取視頻音頻的時長的方法

android當中獲取視頻音頻的時長，我列舉了三種。
1：獲取視頻URI后獲取cursor

cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DURATION));

 

2：根據MediaPlayer獲取：

MediaPlayer mediaPlayer = new MediaPlayer(); mediaPlayer.setDataSource(url); mediaPlayer.prepare(); mediaPlayer.getDuration();

 

3:采用MediaMetadataRetriever的方式：

    public static String getRingDuring(String mUri){ String duration=null; android.media.MediaMetadataRetriever mmr = new android.media.MediaMetadataRetriever(); try { if (mUri != null) { HashMap<String, String> headers=null; if (headers == null) { headers = new HashMap<String, String>(); headers.put("User-Agent", "Mozilla/5.0 (Linux; U; Android 4.4.2; zh-CN; MW-KW-001 Build/JRO03C) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 UCBrowser/1.0.0.001 U4/0.8.0 Mobile Safari/533.1"); } mmr.setDataSource(mUri, headers); } duration = mmr.extractMetadata(android.media.MediaMetadataRetriever.METADATA_KEY_DURATION); } catch (Exception ex) { } finally { mmr.release(); } LogUtil.e("ryan","duration "+duration); return duration; }