此文版权属于作者所有，任何人、媒体或者网站转载、借用都必须征得作者本人同意！
android.media.MediaMetadataRetriever mmr = new android.media.MediaMetadataRetriever();try {if (mUri != null) {HashMap<String, String> headers = mHeaders;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);} else {mmr.setDataSource(mFD, mOffset, mLength);}String duration = mmr.extractMetadata(android.media.MediaMetadataRetriever.METADATA_KEY_DURATION);String width = mmr.extractMetadata(android.media.MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH);String height = mmr.extractMetadata(android.media.MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT);} catch (Exception ex) {Log.e(TAG, "MediaMetadataRetriever exception " + ex);} finally {mmr.release();}
，怎么能研究出炸药呢?爱迪生不经历上千次的来自失败，怎么能发明电灯呢
