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      1 /*
      2  * Copyright (C) 2007 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.provider;
     18 
     19 import android.content.ContentResolver;
     20 import android.content.Intent;
     21 
     22 /**
     23  * These are standard columns for openable URIs. Providers that serve openable
     24  * URIs <em>must</em> support at least these columns when queried.
     25  * <p>
     26  * To find the content type of a URI, use
     27  * {@link ContentResolver#getType(android.net.Uri)}.
     28  *
     29  * @see Intent#CATEGORY_OPENABLE
     30  */
     31 public interface OpenableColumns {
     32 
     33     /**
     34      * The human-friendly name of file. If this is not provided then the name should default to the
     35      * the last segment of the file's URI.
     36      */
     37     public static final String DISPLAY_NAME = "_display_name";
     38 
     39     /**
     40      * The number of bytes in the file identified by the openable URI. Null if unknown.
     41      */
     42     public static final String SIZE = "_size";
     43 }
     44