| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.example.android.actionbarcompat.shareactionprovider.content; |
| |
| import android.content.ContentProvider; |
| import android.content.ContentValues; |
| import android.content.res.AssetFileDescriptor; |
| import android.content.res.AssetManager; |
| import android.database.Cursor; |
| import android.net.Uri; |
| import android.text.TextUtils; |
| |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| |
| /** |
| * A simple ContentProvider which can serve files from this application's assets. The majority of |
| * functionality is in {@link #openAssetFile(android.net.Uri, String)}. |
| */ |
| public class AssetProvider extends ContentProvider { |
| |
| public static String CONTENT_URI = "com.example.android.actionbarcompat.shareactionprovider"; |
| |
| @Override |
| public boolean onCreate() { |
| return true; |
| } |
| |
| @Override |
| public int delete(Uri uri, String selection, String[] selectionArgs) { |
| // Do not support delete requests. |
| return 0; |
| } |
| |
| @Override |
| public String getType(Uri uri) { |
| // Do not support returning the data type |
| return null; |
| } |
| |
| @Override |
| public Uri insert(Uri uri, ContentValues values) { |
| // Do not support insert requests. |
| return null; |
| } |
| |
| @Override |
| public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, |
| String sortOrder) { |
| // Do not support query requests. |
| return null; |
| } |
| |
| @Override |
| public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { |
| // Do not support update requests. |
| return 0; |
| } |
| |
| @Override |
| public AssetFileDescriptor openAssetFile(Uri uri, String mode) throws FileNotFoundException { |
| // The asset file name should be the last path segment |
| final String assetName = uri.getLastPathSegment(); |
| |
| // If the given asset name is empty, throw an exception |
| if (TextUtils.isEmpty(assetName)) { |
| throw new FileNotFoundException(); |
| } |
| |
| try { |
| // Try and return a file descriptor for the given asset name |
| AssetManager am = getContext().getAssets(); |
| return am.openFd(assetName); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| return super.openAssetFile(uri, mode); |
| } |
| } |
| } |