android - PathClassLoader在app中的实例是在哪里创建的？

Question

有一个三个参数的构造器始终没找到在哪里调用的？求教大神？

Answer 1

創建PathClassLoader的是用的工廠：

/**
 * Creates path class loaders.
 *
 * @hide
 */
public class PathClassLoaderFactory {
    // Unconstructable
    private PathClassLoaderFactory() {}

    /**
     * Create a PathClassLoader and initialize a linker-namespace for it.
     *
     * @hide
     */
    public static PathClassLoader createClassLoader(String dexPath,
                                                    String librarySearchPath,
                                                    String libraryPermittedPath,
                                                    ClassLoader parent,
                                                    int targetSdkVersion,
                                                    boolean isNamespaceShared) {
        // 这里被调用的
        PathClassLoader pathClassloader = new PathClassLoader(dexPath, librarySearchPath, parent);

        Trace.traceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "createClassloaderNamespace");
        String errorMessage = createClassloaderNamespace(pathClassloader,
                                                         targetSdkVersion,
                                                         librarySearchPath,
                                                         libraryPermittedPath,
                                                         isNamespaceShared);
        Trace.traceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER);

        if (errorMessage != null) {
            throw new UnsatisfiedLinkError("Unable to create namespace for the classloader " +
                                           pathClassloader + ": " + errorMessage);
        }

        return pathClassloader;
    }

    private static native String createClassloaderNamespace(ClassLoader classLoader,
                                                            int targetSdkVersion,
                                                            String librarySearchPath,
                                                            String libraryPermittedPath,
                                                            boolean isNamespaceShared);