本博客參考以下博客寫的:文件路徑和Uri -- kwongfung的專欄
下面是包裝好的方法,輸入參數爲錄音文件的path,返回值爲它在媒體庫中對應的Uri;
例如以下調用:
String path = "/storage/emulated/0/Recoeder/REC201612075435.mp3";
Uri uri = queryUriForAudio(path);
logd("uritest","Uri : "+uri.toString());
利用log打印出來就是這樣的:
12-07 15:27:33.619 16562-24774/com.bbk.recorder D/uritest: Uri :content://media/external/audio/media/10901
有時候如果某個音頻文件如錄音文件剛剛生成,媒體庫還沒來得及更新的話,這時候獲取到的Uri會爲空null,如果是獲取早就存在的音頻文件的Uri就不會有這個問題!
/** * 查找在於SDcard中的Audio文件對應於MediaStore 的uri * @param path 音頻文件 * @return Uri */ public Uri queryUriforAudio(String path) { File file = new File(path); final String where = MediaStore.Audio.Media.DATA + "='"+file.getAbsolutePath()+"'"; Cursor cursor = this.getContentResolver().query(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, null, where, null, null); if (cursor == null) { Log.d("uritest", "queryUriforAudio: uri爲空 1"); return null; } int id = -1; if (cursor != null) { cursor.moveToFirst(); if (!cursor.isAfterLast()) { id = cursor.getInt(0); } cursor.close(); } if(id==-1) { Log.d("uritest", "queryUriforAudio: uri爲空 2"); return null; } return Uri.withAppendedPath(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, String.valueOf(id)); }