| /* |
| * Copyright (C) 2008 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 dalvik.system; |
| |
| import java.io.File; |
| |
| /** |
| * A class loader that loads classes from {@code .jar} and {@code .apk} files |
| * containing a {@code classes.dex} entry. This can be used to execute code not |
| * installed as part of an application. |
| * |
| * <p>This class loader requires an application-private, writable directory to |
| * cache optimized classes. Use {@code Context.getDir(String, int)} to create |
| * such a directory: <pre> {@code |
| * File dexOutputDir = context.getDir("dex", 0); |
| * }</pre> |
| * |
| * <p><strong>Do not cache optimized classes on external storage.</strong> |
| * External storage does not provide access controls necessary to protect your |
| * application from code injection attacks. |
| */ |
| public class DexClassLoader extends BaseDexClassLoader { |
| /** |
| * Creates a {@code DexClassLoader} that finds interpreted and native |
| * code. Interpreted classes are found in a set of DEX files contained |
| * in Jar or APK files. |
| * |
| * <p>The path lists are separated using the character specified by the |
| * {@code path.separator} system property, which defaults to {@code :}. |
| * |
| * @param dexPath the list of jar/apk files containing classes and |
| * resources, delimited by {@code File.pathSeparator}, which |
| * defaults to {@code ":"} on Android |
| * @param optimizedDirectory directory where optimized dex files |
| * should be written; must not be {@code null} |
| * @param libraryPath the list of directories containing native |
| * libraries, delimited by {@code File.pathSeparator}; may be |
| * {@code null} |
| * @param parent the parent class loader |
| */ |
| public DexClassLoader(String dexPath, String optimizedDirectory, |
| String libraryPath, ClassLoader parent) { |
| super(dexPath, new File(optimizedDirectory), libraryPath, parent); |
| } |
| } |