Android调用MediaScanner进行扫描

  1 import android.content.Context;
  2 import android.media.MediaScannerConnection;
  3 import android.net.Uri;
  4 
  5 public class MediaScanner {
  6 
  7     private MediaScannerConnection mediaScanConn = null;
  8 
  9     private MusicSannerClient client = null;
 10 
 11     private String filePath = null;
 12     
 13     private String fileType = null;
 14     
 15     private String[] filePaths = null;
 16     /**
 17      * 然后调用MediaScanner.scanFile("/sdcard/2.mp3");
 18      * */
 19     public MediaScanner(Context context) {
 20         //创建MusicSannerClient
 21         if (client == null) {
 22 
 23             client = new MusicSannerClient();
 24         }
 25 
 26         if (mediaScanConn == null) {
 27 
 28             mediaScanConn = new MediaScannerConnection(context, client);
 29         }
 30     }
 31 
 32     class MusicSannerClient implements
 33             MediaScannerConnection.MediaScannerConnectionClient {
 34 
 35         public void onMediaScannerConnected() {
 36             
 37             if(filePath != null){
 38                 
 39                 mediaScanConn.scanFile(filePath, fileType);
 40             }
 41             
 42             if(filePaths != null){
 43                 
 44                 for(String file: filePaths){
 45                     
 46                     mediaScanConn.scanFile(file, fileType);
 47                 }
 48             }
 49             
 50             filePath = null;
 51             
 52             fileType = null;
 53             
 54             filePaths = null;
 55         }
 56 
 57         public void onScanCompleted(String path, Uri uri) {
 58             // TODO Auto-generated method stub
 59             mediaScanConn.disconnect();
 60         }
 61 
 62     }
 63     
 64     /**
 65      * 扫描文件标签信息
 66      * @param filePath 文件路径 eg:/sdcard/MediaPlayer/dahai.mp3
 67      * @param fileType 文件类型 eg: audio/mp3  media/*  application/ogg
 68      * */
 69     public void scanFile(String filepath,String fileType) {
 70 
 71         this.filePath = filepath;
 72         
 73         this.fileType = fileType;
 74         //连接之后调用MusicSannerClient的onMediaScannerConnected()方法
 75         mediaScanConn.connect();
 76     }
 77     /**
 78      * @param filePaths 文件路径
 79      * @param fileType 文件类型
 80      * */
 81     public void scanFile(String[] filePaths,String fileType){
 82         
 83         this.filePaths = filePaths;
 84         
 85         this.fileType = fileType;
 86         
 87         mediaScanConn.connect();
 88         
 89     }
 90     
 91     public String getFilePath() {
 92 
 93         return filePath;
 94     }
 95 
 96     public void setFilePath(String filePath) {
 97 
 98         this.filePath = filePath;
 99     }
100 
101     public String getFileType() {
102         
103         return fileType;
104     }
105 
106     public void setFileType(String fileType) {
107         
108         this.fileType = fileType;
109     }
110 
111     
112 }