| /* |
| * Copyright (C) 2018 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.google.android.car.kitchensink.cluster; |
| |
| import android.content.ContentProvider; |
| import android.content.ContentValues; |
| import android.content.UriMatcher; |
| import android.database.Cursor; |
| import android.net.Uri; |
| import android.os.ParcelFileDescriptor; |
| import android.util.Log; |
| |
| import java.io.File; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.nio.file.Files; |
| import java.nio.file.StandardCopyOption; |
| |
| /** |
| * Image Content Provider for the car instument cluster |
| */ |
| public class ClusterContentProvider extends ContentProvider { |
| private static final String TAG = "ClusterContentProvider"; |
| private static final String AUTHORITY = |
| "com.google.android.car.kitchensink.cluster.clustercontentprovider"; |
| |
| private UriMatcher mUriMatcher; |
| private static final int URI_IMAGE_CODE = 1; |
| |
| @Override |
| public boolean onCreate() { |
| mUriMatcher = new UriMatcher(UriMatcher.NO_MATCH); |
| mUriMatcher.addURI(AUTHORITY, "img/*", URI_IMAGE_CODE); |
| |
| return true; |
| } |
| |
| @Override |
| public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException { |
| switch (mUriMatcher.match(uri)) { |
| case URI_IMAGE_CODE: |
| // Tries to get the img file from internal cache |
| String filename = new File(uri.getPath()).getName(); |
| File imageFile = new File( |
| getContext().getCacheDir() + File.separator + uri.getLastPathSegment()); |
| |
| // If the file doesn't exist in internal cache, |
| // copy the file from res.raw into internal cache |
| if (!imageFile.exists()) { |
| InputStream inputStream = getContext().getResources().openRawResource( |
| getContext().getResources().getIdentifier( |
| filename.substring(0, filename.lastIndexOf(".")), |
| "raw", |
| getContext().getPackageName())); |
| |
| try { |
| Files.copy(inputStream, imageFile.toPath(), |
| StandardCopyOption.REPLACE_EXISTING); |
| } catch (IOException e) { |
| Log.e(TAG, "could not copy file to internal cache: " + uri.getPath(), e); |
| } |
| |
| imageFile = new File( |
| getContext().getCacheDir() + File.separator + uri.getLastPathSegment()); |
| } |
| |
| ParcelFileDescriptor image = ParcelFileDescriptor.open(imageFile, |
| ParcelFileDescriptor.MODE_READ_ONLY); |
| |
| return image; |
| |
| default: |
| return null; |
| } |
| } |
| |
| |
| @Override |
| public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, |
| String sortOrder) { |
| return null; |
| } |
| |
| @Override |
| public String getType(Uri uri) { |
| return null; |
| } |
| |
| @Override |
| public Uri insert(Uri uri, ContentValues values) { |
| return null; |
| } |
| |
| @Override |
| public int delete(Uri uri, String selection, String[] selectionArgs) { |
| return 0; |
| } |
| |
| @Override |
| public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { |
| return 0; |
| } |
| } |