1 /* 2 * Copyright (C) 2012 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.badlogic.gdx.backends.android; 17 18 import java.io.File; 19 import java.io.IOException; 20 import java.util.Vector; 21 22 import android.content.Context; 23 import android.os.Environment; 24 25 public class APKExpansionSupport { 26 // The shared path to all app expansion files 27 private final static String EXP_PATH = "/Android/obb/"; 28 29 static String[] getAPKExpansionFiles(Context ctx, int mainVersion, 30 int patchVersion) { 31 String packageName = ctx.getPackageName(); 32 Vector<String> ret = new Vector<String>(); 33 if (Environment.getExternalStorageState().equals( 34 Environment.MEDIA_MOUNTED)) { 35 // Build the full path to the app's expansion files 36 File root = Environment.getExternalStorageDirectory(); 37 File expPath = new File(root.toString() + EXP_PATH + packageName); 38 39 // Check that expansion file path exists 40 if (expPath.exists()) { 41 if (mainVersion > 0) { 42 String strMainPath = expPath + File.separator + "main." 43 + mainVersion + "." + packageName + ".obb"; 44 File main = new File(strMainPath); 45 if (main.isFile()) { 46 ret.add(strMainPath); 47 } 48 } 49 if (patchVersion > 0) { 50 String strPatchPath = expPath + File.separator + "patch." 51 + mainVersion + "." + packageName + ".obb"; 52 File main = new File(strPatchPath); 53 if (main.isFile()) { 54 ret.add(strPatchPath); 55 } 56 } 57 } 58 } 59 String[] retArray = new String[ret.size()]; 60 ret.toArray(retArray); 61 return retArray; 62 } 63 64 static public ZipResourceFile getResourceZipFile(String[] expansionFiles) 65 throws IOException { 66 ZipResourceFile apkExpansionFile = null; 67 for (String expansionFilePath : expansionFiles) { 68 if (null == apkExpansionFile) { 69 apkExpansionFile = new ZipResourceFile(expansionFilePath); 70 } else { 71 apkExpansionFile.addPatchFile(expansionFilePath); 72 } 73 } 74 return apkExpansionFile; 75 } 76 77 static public ZipResourceFile getAPKExpansionZipFile(Context ctx, 78 int mainVersion, int patchVersion) throws IOException { 79 String[] expansionFiles = getAPKExpansionFiles(ctx, mainVersion, 80 patchVersion); 81 return getResourceZipFile(expansionFiles); 82 } 83 } 84
