根据Uri获取图片绝对路径，解决Android4.4以上版本Uri转换

1. /** 
    * 根据Uri获取图片绝对路径，解决Android4.4以上版本Uri转换 
    * @param activity 
    * @param imageUri 
    * @author yaoxing 
    * @date 2014-10-12 
    */  
   @TargetApi(19)  
   public static String getImageAbsolutePath(Activity context, Uri imageUri) {  
       if (context == null || imageUri == null)  
           return null;  
       if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT && DocumentsContract.isDocumentUri(context, imageUri)) {  
           if (isExternalStorageDocument(imageUri)) {  
               String docId = DocumentsContract.getDocumentId(imageUri);  
               String[] split = docId.split(":");  
               String type = split[0];  
               if ("primary".equalsIgnoreCase(type)) {  
                   return Environment.getExternalStorageDirectory() + "/" + split[1];  
               }  
           } else if (isDownloadsDocument(imageUri)) {  
               String id = DocumentsContract.getDocumentId(imageUri);  
               Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));  
               return getDataColumn(context, contentUri, null, null);  
           } else if (isMediaDocument(imageUri)) {  
               String docId = DocumentsContract.getDocumentId(imageUri);  
               String[] split = docId.split(":");  
               String type = split[0];  
               Uri contentUri = null;  
               if ("image".equals(type)) {  
                   contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;  
               } else if ("video".equals(type)) {  
                   contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;  
               } else if ("audio".equals(type)) {  
                   contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;  
               }  
               String selection = MediaStore.Images.Media._ID + "=?";  
               String[] selectionArgs = new String[] { split[1] };  
               return getDataColumn(context, contentUri, selection, selectionArgs);  
           }  
       } // MediaStore (and general)  
       else if ("content".equalsIgnoreCase(imageUri.getScheme())) {  
           // Return the remote address  
           if (isGooglePhotosUri(imageUri))  
               return imageUri.getLastPathSegment();  
           return getDataColumn(context, imageUri, null, null);  
       }  
       // File  
       else if ("file".equalsIgnoreCase(imageUri.getScheme())) {  
           return imageUri.getPath();  
       }  
       return null;  
   }  
     
   public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {  
       Cursor cursor = null;  
       String column = MediaStore.Images.Media.DATA;  
       String[] projection = { column };  
       try {  
           cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);  
           if (cursor != null && cursor.moveToFirst()) {  
               int index = cursor.getColumnIndexOrThrow(column);  
               return cursor.getString(index);  
           }  
       } finally {  
           if (cursor != null)  
               cursor.close();  
       }  
       return null;  
   }  
     
   /** 
    * @param uri The Uri to check. 
    * @return Whether the Uri authority is ExternalStorageProvider. 
    */  
   public static boolean isExternalStorageDocument(Uri uri) {  
       return "com.android.externalstorage.documents".equals(uri.getAuthority());  
   }  
     
   /** 
    * @param uri The Uri to check. 
    * @return Whether the Uri authority is DownloadsProvider. 
    */  
   public static boolean isDownloadsDocument(Uri uri) {  
       return "com.android.providers.downloads.documents".equals(uri.getAuthority());  
   }  
     
   /** 
    * @param uri The Uri to check. 
    * @return Whether the Uri authority is MediaProvider. 
    */  
   public static boolean isMediaDocument(Uri uri) {  
       return "com.android.providers.media.documents".equals(uri.getAuthority());  
   }  
     
   /** 
    * @param uri The Uri to check. 
    * @return Whether the Uri authority is Google Photos. 
    */  
   public static boolean isGooglePhotosUri(Uri uri) {  
       return "com.googl

   
   
   
2. 转自https://blog.csdn.net/q445697127/article/details/40537945
3. 已测试 6.0 和 7.0 从相册选择图片