根据Url获取手机文件真实路径

• private String getRealPath(Uri fileUrl){
  String fileName = null;
  Uri filePathUri = fileUrl;
  if(fileUrl!= null){
  if (fileUrl.getScheme().toString().compareTo(“content”)==0)
  //content://开头的uri
  {
  Cursor cursor = MainActivity.this.getContentResolver().query(filePathUri, null, null,
  null, null);
  if (cursor != null && cursor.moveToFirst())
  {
  int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DISPLAY_NAME);
  //可能参数为MediaStroe.Images.Media.DATA;根据手机目录不同尝试不同参数
  fileName = cursor.getString(column_index); //取出文件路径
  if(!fileName.startsWith(“/mnt”)){ //检查是否有”/mnt“前缀

                    fileName = "/mnt" + fileName;              }              cursor.close();          }      }else if (filePathUri.getScheme().compareTo("file")==0)         //file:///开头的uri      {          fileName = filePathUri.toString();          fileName = filePathUri.toString().replace("file://", ""); //替换file://          if(!fileName.startsWith("/mnt")){ //加上"/mnt"头              fileName += "/mnt";          }      }  }  return fileName;    }