Examples with DexClassLoader dalvik.system.DexClassLoader used on opensource projects

Example 41 with DexClassLoader

use of dalvik.system.DexClassLoader in project AndroidLife by CaMnter.

the class SmartApplication method loadDex.

private void loadDex() {
    try {
        String dir = null;
        final File cacheDir = this.getExternalCacheDir();
        final File filesDir = this.getExternalFilesDir("");
        if (cacheDir != null) {
            dir = cacheDir.getAbsolutePath();
        } else {
            if (filesDir != null) {
                dir = filesDir.getAbsolutePath();
            }
        }
        if (TextUtils.isEmpty(dir))
            return;
        // assets 的 register-activity-plugin.apk 拷贝到 /storage/sdcard0/Android/data/[package name]/cache
        // 或者  /storage/sdcard0/Android/data/[package name]/files
        final File dexPath = new File(dir + File.separator + "register-activity-plugin.apk");
        AssetsUtils.copyAssets(this, "register-activity-plugin.apk", dexPath.getAbsolutePath());
        // /data/data/[package name]/app_register-activity-plugin
        final File optimizedDirectory = this.getDir("register-activity-plugin", MODE_PRIVATE);
        this.dexClassLoader = new DexClassLoader(dexPath.getAbsolutePath(), optimizedDirectory.getAbsolutePath(), null, this.getClassLoader());
    } catch (Exception e) {
        e.printStackTrace();
    }
}

Example 42 with DexClassLoader

use of dalvik.system.DexClassLoader in project AndroidLife by CaMnter.

the class LoadedPlugin method createClassLoader.

/**
 * 构造一个加载该 Apk 的 classloader
 *
 * 然后把这个 classloader 的 Element 插入宿主的 DexPathList # Element[] dexElements 中
 * 宿主 classloader 也可以访问该 Apk 内的 class
 *
 * @param context context
 * @param apk apk
 * @param libsDir libsDir
 * @param parent parent
 * @return ClassLoader
 */
private static ClassLoader createClassLoader(Context context, File apk, File libsDir, ClassLoader parent) {
    File dexOutputDir = context.getDir(Constants.OPTIMIZE_DIR, Context.MODE_PRIVATE);
    String dexOutputPath = dexOutputDir.getAbsolutePath();
    DexClassLoader loader = new DexClassLoader(apk.getAbsolutePath(), dexOutputPath, libsDir.getAbsolutePath(), parent);
    if (Constants.COMBINE_CLASSLOADER) {
        try {
            DexUtil.insertDex(loader);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    return loader;
}

Example 43 with DexClassLoader

use of dalvik.system.DexClassLoader in project AndroidLife by CaMnter.

the class HotPatch method inject.

public static void inject(String path, Context context) {
    File file = new File(path);
    if (file.exists()) {
        try {
            // 获取 classes 的 dexElements
            Class<?> cl = Class.forName("dalvik.system.BaseDexClassLoader");
            Object pathList = ReflectionUtils.getField(cl, "pathList", context.getClassLoader());
            Object baseElements = ReflectionUtils.getField(pathList.getClass(), "dexElements", pathList);
            // 获取 patch_dex 的 dexElements（需要先加载dex）
            String dexopt = context.getDir("dexopt", 0).getAbsolutePath();
            DexClassLoader dexClassLoader = new DexClassLoader(path, dexopt, dexopt, context.getClassLoader());
            Object obj = ReflectionUtils.getField(cl, "pathList", dexClassLoader);
            Object dexElements = ReflectionUtils.getField(obj.getClass(), "dexElements", obj);
            // 合并两个 Elements
            Object combineElements = ReflectionUtils.combineArray(dexElements, baseElements);
            // 将合并后的 Element 数组重新赋值给 app 的 classLoader
            ReflectionUtils.setField(pathList.getClass(), "dexElements", pathList, combineElements);
        } catch (Exception e) {
            e.printStackTrace();
        }
    } else {
        Log.e("HotPatch", file.getAbsolutePath() + "does not exists");
    }
}

Example 44 with DexClassLoader

use of dalvik.system.DexClassLoader in project AndroidLife by CaMnter.

the class HotFix method injectBelowApiLevel14.

/**
 * 小于 API 14 的插桩策略
 *
 * @param context context
 * @param str 插件 dex 的路径
 * @param str2 插件 dex 中要修复的类 name
 * @throws ClassNotFoundException
 * @throws NoSuchFieldException
 * @throws IllegalAccessException
 */
@TargetApi(14)
private static void injectBelowApiLevel14(Context context, String str, String str2) throws ClassNotFoundException, NoSuchFieldException, IllegalAccessException {
    PathClassLoader obj = (PathClassLoader) context.getClassLoader();
    DexClassLoader dexClassLoader = new DexClassLoader(str, context.getDir("dex", 0).getAbsolutePath(), str, context.getClassLoader());
    dexClassLoader.loadClass(str2);
    setField(obj, PathClassLoader.class, "mPaths", appendArray(getField(obj, PathClassLoader.class, "mPaths"), getField(dexClassLoader, DexClassLoader.class, "mRawDexPath")));
    setField(obj, PathClassLoader.class, "mFiles", combineArray(getField(obj, PathClassLoader.class, "mFiles"), getField(dexClassLoader, DexClassLoader.class, "mFiles")));
    setField(obj, PathClassLoader.class, "mZips", combineArray(getField(obj, PathClassLoader.class, "mZips"), getField(dexClassLoader, DexClassLoader.class, "mZips")));
    setField(obj, PathClassLoader.class, "mDexs", combineArray(getField(obj, PathClassLoader.class, "mDexs"), getField(dexClassLoader, DexClassLoader.class, "mDexs")));
    obj.loadClass(str2);
}

Example 45 with DexClassLoader

use of dalvik.system.DexClassLoader in project blog_resource by Guolei1130.

the class MainActivity method enableInstantRun.

private void enableInstantRun() {
    // 为了简单，就不修改ClassLoader了，直接用一个新的ClassLoader去加载。
    String dexPath = new File("/sdcard/instant_run.jar").getPath();
    File dexOptOutDir = new File(getFilesDir(), "dexopt");
    if (!dexOptOutDir.exists()) {
        boolean result = dexOptOutDir.mkdir();
        if (!result) {
            Log.e(TAG, "loadExtJar: create out dir error");
        }
    }
    String dexOptOutDr = dexOptOutDir.getPath();
    DexClassLoader dexClassLoader = new DexClassLoader(dexPath, dexOptOutDr, null, ClassLoader.getSystemClassLoader());
    try {
        $change = dexClassLoader.loadClass("com.guolei.hotfixdemo.MainActivity$override").getConstructor(Object.class).newInstance(this);
    } catch (Exception e) {
        e.printStackTrace();
    }
}