1 /* 2 * Copyright (c) 2019, 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 package com.android.car.media.testmediaapp; 17 18 import android.content.ContentProvider; 19 import android.content.ContentValues; 20 import android.content.res.AssetFileDescriptor; 21 import android.database.Cursor; 22 import android.net.Uri; 23 import android.text.TextUtils; 24 import android.util.Log; 25 26 import java.io.FileNotFoundException; 27 import java.io.IOException; 28 29 public class TmaAssetProvider extends ContentProvider { 30 31 private static final String TAG = "TmaAssetProvider"; 32 33 private static final String URI_PREFIX = "content://com.android.car.media.testmediaapp.assets/"; 34 35 buildUriString(String localAssetFilePath)36 public static String buildUriString(String localAssetFilePath) { 37 return URI_PREFIX + localAssetFilePath; 38 } 39 40 @Override openAssetFile(Uri uri, String mode)41 public AssetFileDescriptor openAssetFile(Uri uri, String mode) throws FileNotFoundException { 42 String file_path = uri.getPath(); 43 if (TextUtils.isEmpty(file_path)) throw new FileNotFoundException(); 44 try { 45 if (file_path.startsWith("/")) { 46 file_path = file_path.substring(1); 47 } 48 return getContext().getAssets().openFd(file_path); 49 } catch (IOException e) { 50 Log.e(TAG, "openAssetFile failed: " + e); 51 return null; 52 } 53 } 54 55 @Override onCreate()56 public boolean onCreate() { 57 return false; 58 } 59 60 @Override query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder)61 public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, 62 String sortOrder) { 63 return null; 64 } 65 66 @Override getType(Uri uri)67 public String getType(Uri uri) { 68 return null; 69 } 70 71 @Override insert(Uri uri, ContentValues values)72 public Uri insert(Uri uri, ContentValues values) { 73 return null; 74 } 75 76 @Override delete(Uri uri, String selection, String[] selectionArgs)77 public int delete(Uri uri, String selection, String[] selectionArgs) { 78 return 0; 79 } 80 81 @Override update(Uri uri, ContentValues values, String selection, String[] selectionArgs)82 public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { 83 return 0; 84 } 85 } 86