58 lines
2.4 KiB
Java
58 lines
2.4 KiB
Java
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package dalvik.system;
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/**
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* A class loader that loads classes from {@code .jar} and {@code .apk} files
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* containing a {@code classes.dex} entry. This can be used to execute code not
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* installed as part of an application.
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*
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* <p>Prior to API level 26, this class loader requires an
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* application-private, writable directory to cache optimized classes.
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* Use {@code Context.getCodeCacheDir()} to create such a directory:
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* <pre> {@code
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* File dexOutputDir = context.getCodeCacheDir();
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* }</pre>
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*
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* <p><strong>Do not cache optimized classes on external storage.</strong>
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* External storage does not provide access controls necessary to protect your
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* application from code injection attacks.
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*/
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public class DexClassLoader extends BaseDexClassLoader {
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/**
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* Creates a {@code DexClassLoader} that finds interpreted and native
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* code. Interpreted classes are found in a set of DEX files contained
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* in Jar or APK files.
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*
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* <p>The path lists are separated using the character specified by the
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* {@code path.separator} system property, which defaults to {@code :}.
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*
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* @param dexPath the list of jar/apk files containing classes and
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* resources, delimited by {@code File.pathSeparator}, which
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* defaults to {@code ":"} on Android
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* @param optimizedDirectory this parameter is deprecated and has no effect since API level 26.
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* @param librarySearchPath the list of directories containing native
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* libraries, delimited by {@code File.pathSeparator}; may be
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* {@code null}
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* @param parent the parent class loader
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*/
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public DexClassLoader(String dexPath, String optimizedDirectory,
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String librarySearchPath, ClassLoader parent) {
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super(dexPath, null, librarySearchPath, parent);
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}
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}
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