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Xposed 高级应用与案例分析：实际项目中的深度定制解决方案

作者

Xposed 高级应用与案例分析：实际项目中的深度定制解决方案

本文将通过多个实际案例，展示 Xposed 框架在复杂场景下的高级应用，包括企业级定制、系统优化、兼容性解决方案等。

案例一：企业级设备管理系统

需求背景

某企业需要对员工使用的 Android 设备进行统一管理，包括应用控制、数据保护、行为监控等功能。

// EnterpriseDeviceManager.java - 企业设备管理
package com.enterprise.devicemanager;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Bundle;
import java.util.Set;
import java.util.HashSet;

import de.robv.android.xposed.IXposedHookLoadPackage;
import de.robv.android.xposed.XC_MethodHook;
import de.robv.android.xposed.XC_MethodReplacement;
import de.robv.android.xposed.XposedBridge;
import de.robv.android.xposed.XposedHelpers;
import de.robv.android.xposed.callbacks.XC_LoadPackage.LoadPackageParam;

public class EnterpriseDeviceManager implements IXposedHookLoadPackage {
    
    private static final String TAG = "EnterpriseDeviceManager";
    
    // 企业策略配置
    private static class EnterprisePolicy {
        public Set<String> blockedApps = new HashSet<>();
        public Set<String> allowedApps = new HashSet<>();
        public boolean restrictInstallation = true;
        public boolean monitorUsage = true;
        public boolean enforceWorkingHours = true;
        public int workingHourStart = 9; // 9 AM
        public int workingHourEnd = 18;  // 6 PM
        public boolean allowPersonalUse = false;
        
        public EnterprisePolicy() {
            // 初始化默认策略
            initializeDefaultPolicy();
        }
        
        private void initializeDefaultPolicy() {
            // 阻止的应用
            blockedApps.add("com.facebook.katana");
            blockedApps.add("com.instagram.android");
            blockedApps.add("com.snapchat.android");
            blockedApps.add("com.tiktok");
            
            // 允许的工作应用
            allowedApps.add("com.microsoft.office.outlook");
            allowedApps.add("com.microsoft.teams");
            allowedApps.add("com.slack");
            allowedApps.add("com.zoom.us");
            allowedApps.add("com.enterprise.workapp");
        }
    }
    
    private EnterprisePolicy policy = new EnterprisePolicy();
    
    @Override
    public void handleLoadPackage(LoadPackageParam lpparam) throws Throwable {
        // 应用启动控制
        implementAppLaunchControl(lpparam);
        
        // 应用安装控制
        implementInstallationControl(lpparam);
        
        // 使用时间监控
        implementUsageMonitoring(lpparam);
        
        // 数据保护
        implementDataProtection(lpparam);
        
        // 工作时间强制
        implementWorkingHoursEnforcement(lpparam);
    }
    
    private void implementAppLaunchControl(LoadPackageParam lpparam) {
        try {
            // Hook Activity 启动
            XposedHelpers.findAndHookMethod(
                Activity.class,
                "onCreate",
                Bundle.class,
                new XC_MethodHook() {
                    @Override
                    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                        Activity activity = (Activity) param.thisObject;
                        String packageName = activity.getPackageName();
                        
                        // 检查应用是否被阻止
                        if (isAppBlocked(packageName)) {
                            XposedBridge.log(TAG + ": 阻止应用启动 - " + packageName);
                            
                            // 显示企业策略提示
                            showEnterpriseBlockMessage(activity);
                            
                            // 关闭应用
                            activity.finish();
                            return;
                        }
                        
                        // 记录应用使用
                        recordAppUsage(packageName, "launch");
                    }
                }
            );
            
        } catch (Throwable t) {
            XposedBridge.log(TAG + ": 应用启动控制失败 - " + t.getMessage());
        }
    }
    
    private void implementInstallationControl(LoadPackageParam lpparam) {
        if (!"com.android.packageinstaller".equals(lpparam.packageName) &&
            !"com.google.android.packageinstaller".equals(lpparam.packageName)) {
            return;
        }
        
        try {
            // Hook 包安装器
            XposedHelpers.findAndHookMethod(
                "com.android.packageinstaller.PackageInstallerActivity",
                lpparam.classLoader,
                "onCreate",
                Bundle.class,
                new XC_MethodHook() {
                    @Override
                    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                        Activity activity = (Activity) param.thisObject;
                        
                        if (policy.restrictInstallation) {
                            // 检查是否允许安装
                            if (!isInstallationAllowed(activity)) {
                                XposedBridge.log(TAG + ": 阻止应用安装");
                                
                                showInstallationBlockedMessage(activity);
                                activity.finish();
                                return;
                            }
                        }
                        
                        // 记录安装尝试
                        recordInstallationAttempt(activity);
                    }
                }
            );
            
        } catch (Throwable t) {
            XposedBridge.log(TAG + ": 安装控制失败 - " + t.getMessage());
        }
    }
    
    private void implementUsageMonitoring(LoadPackageParam lpparam) {
        if (!policy.monitorUsage) {
            return;
        }
        
        try {
            // Hook Activity 生命周期
            XposedHelpers.findAndHookMethod(
                Activity.class,
                "onResume",
                new XC_MethodHook() {
                    @Override
                    protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                        Activity activity = (Activity) param.thisObject;
                        String packageName = activity.getPackageName();
                        
                        // 记录应用使用开始
                        UsageTracker.startUsageSession(packageName, activity.getClass().getSimpleName());
                    }
                }
            );
            
            XposedHelpers.findAndHookMethod(
                Activity.class,
                "onPause",
                new XC_MethodHook() {
                    @Override
                    protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                        Activity activity = (Activity) param.thisObject;
                        String packageName = activity.getPackageName();
                        
                        // 记录应用使用结束
                        UsageTracker.endUsageSession(packageName);
                    }
                }
            );
            
        } catch (Throwable t) {
            XposedBridge.log(TAG + ": 使用监控失败 - " + t.getMessage());
        }
    }
    
    private void implementDataProtection(LoadPackageParam lpparam) {
        try {
            // Hook 文件操作
            XposedHelpers.findAndHookMethod(
                "java.io.FileOutputStream",
                lpparam.classLoader,
                "write",
                byte[].class,
                new XC_MethodHook() {
                    @Override
                    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                        // 检查是否为敏感数据写入
                        if (isSensitiveDataWrite(lpparam.packageName, param)) {
                            // 加密数据或阻止写入
                            handleSensitiveDataWrite(param);
                        }
                    }
                }
            );
            
            // Hook 网络传输
            XposedHelpers.findAndHookMethod(
                "java.net.URL",
                lpparam.classLoader,
                "openConnection",
                new XC_MethodHook() {
                    @Override
                    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                        java.net.URL url = (java.net.URL) param.thisObject;
                        
                        // 检查数据传输策略
                        if (!isDataTransferAllowed(lpparam.packageName, url.toString())) {
                            XposedBridge.log(TAG + ": 阻止数据传输 - " + url.toString());
                            throw new java.io.IOException("Data transfer blocked by enterprise policy");
                        }
                    }
                }
            );
            
        } catch (Throwable t) {
            XposedBridge.log(TAG + ": 数据保护失败 - " + t.getMessage());
        }
    }
    
    private void implementWorkingHoursEnforcement(LoadPackageParam lpparam) {
        if (!policy.enforceWorkingHours) {
            return;
        }
        
        try {
            XposedHelpers.findAndHookMethod(
                Activity.class,
                "onCreate",
                Bundle.class,
                new XC_MethodHook() {
                    @Override
                    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                        Activity activity = (Activity) param.thisObject;
                        String packageName = activity.getPackageName();
                        
                        // 检查当前时间和工作时间策略
                        if (!isWithinWorkingHours() && !isPersonalUseAllowed(packageName)) {
                            XposedBridge.log(TAG + ": 非工作时间阻止应用 - " + packageName);
                            
                            showWorkingHoursMessage(activity);
                            activity.finish();
                        }
                    }
                }
            );
            
        } catch (Throwable t) {
            XposedBridge.log(TAG + ": 工作时间强制失败 - " + t.getMessage());
        }
    }
    
    // 辅助方法
    private boolean isAppBlocked(String packageName) {
        return policy.blockedApps.contains(packageName);
    }
    
    private boolean isInstallationAllowed(Activity activity) {
        // 检查安装权限和企业策略
        Intent intent = activity.getIntent();
        if (intent != null && intent.getData() != null) {
            String apkPath = intent.getData().getPath();
            // 分析 APK 包名和权限
            return analyzeApkForInstallation(apkPath);
        }
        return false;
    }
    
    private boolean analyzeApkForInstallation(String apkPath) {
        try {
            // 使用 PackageManager 分析 APK
            PackageManager pm = null; // 需要获取 PackageManager 实例
            android.content.pm.PackageInfo packageInfo = pm.getPackageArchiveInfo(apkPath, 0);
            
            if (packageInfo != null) {
                String packageName = packageInfo.packageName;
                
                // 检查是否在允许列表中
                if (policy.allowedApps.contains(packageName)) {
                    return true;
                }
                
                // 检查是否在阻止列表中
                if (policy.blockedApps.contains(packageName)) {
                    return false;
                }
                
                // 默认策略：需要管理员批准
                return requestAdminApproval(packageName);
            }
        } catch (Exception e) {
            XposedBridge.log(TAG + ": APK 分析失败 - " + e.getMessage());
        }
        
        return false;
    }
    
    private boolean requestAdminApproval(String packageName) {
        // 发送管理员批准请求
        // 这里可以通过网络请求或本地通知实现
        XposedBridge.log(TAG + ": 请求管理员批准安装 - " + packageName);
        return false; // 默认拒绝，等待批准
    }
    
    private void recordAppUsage(String packageName, String action) {
        UsageTracker.recordEvent(packageName, action, System.currentTimeMillis());
    }
    
    private void recordInstallationAttempt(Activity activity) {
        Intent intent = activity.getIntent();
        if (intent != null && intent.getData() != null) {
            String apkPath = intent.getData().getPath();
            UsageTracker.recordEvent("installation_attempt", apkPath, System.currentTimeMillis());
        }
    }
    
    private boolean isSensitiveDataWrite(String packageName, XC_MethodHook.MethodHookParam param) {
        // 检查是否为敏感数据写入
        byte[] data = (byte[]) param.args[0];
        
        // 简单的敏感数据检测
        String dataString = new String(data);
        return dataString.contains("password") || 
               dataString.contains("credit") || 
               dataString.contains("ssn") ||
               dataString.contains("confidential");
    }
    
    private void handleSensitiveDataWrite(XC_MethodHook.MethodHookParam param) {
        // 处理敏感数据写入
        XposedBridge.log(TAG + ": 检测到敏感数据写入，进行加密处理");
        
        byte[] originalData = (byte[]) param.args[0];
        byte[] encryptedData = encryptData(originalData);
        param.args[0] = encryptedData;
    }
    
    private byte[] encryptData(byte[] data) {
        // 简单的数据加密实现
        // 实际应用中应使用更强的加密算法
        byte[] encrypted = new byte[data.length];
        for (int i = 0; i < data.length; i++) {
            encrypted[i] = (byte) (data[i] ^ 0xAA); // 简单异或加密
        }
        return encrypted;
    }
    
    private boolean isDataTransferAllowed(String packageName, String url) {
        // 检查数据传输策略
        if (url.contains("enterprise.com") || url.contains("company.com")) {
            return true; // 允许企业内部传输
        }
        
        if (policy.allowedApps.contains(packageName)) {
            return true; // 允许的应用可以传输数据
        }
        
        return false; // 默认阻止外部数据传输
    }
    
    private boolean isWithinWorkingHours() {
        java.util.Calendar calendar = java.util.Calendar.getInstance();
        int currentHour = calendar.get(java.util.Calendar.HOUR_OF_DAY);
        
        return currentHour >= policy.workingHourStart && currentHour < policy.workingHourEnd;
    }
    
    private boolean isPersonalUseAllowed(String packageName) {
        return policy.allowPersonalUse || policy.allowedApps.contains(packageName);
    }
    
    private void showEnterpriseBlockMessage(Activity activity) {
        // 显示企业策略阻止消息
        showMessage(activity, "应用被企业策略阻止", "此应用不符合企业安全策略，无法使用。");
    }
    
    private void showInstallationBlockedMessage(Activity activity) {
        showMessage(activity, "安装被阻止", "企业策略不允许安装此应用，请联系管理员。");
    }
    
    private void showWorkingHoursMessage(Activity activity) {
        showMessage(activity, "非工作时间", "当前为非工作时间，此应用仅在工作时间可用。");
    }
    
    private void showMessage(Activity activity, String title, String message) {
        try {
            android.app.AlertDialog.Builder builder = new android.app.AlertDialog.Builder(activity);
            builder.setTitle(title)
                   .setMessage(message)
                   .setPositiveButton("确定", null)
                   .show();
        } catch (Exception e) {
            XposedBridge.log(TAG + ": 显示消息失败 - " + e.getMessage());
        }
    }
}

// 使用跟踪器
class UsageTracker {
    private static final String TAG = "UsageTracker";
    private static java.util.Map<String, Long> sessionStartTimes = new java.util.HashMap<>();
    
    public static void startUsageSession(String packageName, String activityName) {
        String key = packageName + ":" + activityName;
        sessionStartTimes.put(key, System.currentTimeMillis());
        
        XposedBridge.log(TAG + ": 开始使用会话 - " + key);
    }
    
    public static void endUsageSession(String packageName) {
        long endTime = System.currentTimeMillis();
        
        for (String key : sessionStartTimes.keySet()) {
            if (key.startsWith(packageName + ":")) {
                Long startTime = sessionStartTimes.remove(key);
                if (startTime != null) {
                    long duration = endTime - startTime;
                    recordUsageDuration(packageName, duration);
                }
                break;
            }
        }
    }
    
    public static void recordEvent(String category, String action, long timestamp) {
        // 记录事件到本地数据库或发送到服务器
        String logEntry = String.format("%d,%s,%s", timestamp, category, action);
        XposedBridge.log(TAG + ": 记录事件 - " + logEntry);
        
        // 实际实现中应该保存到文件或数据库
        saveToStorage(logEntry);
    }
    
    private static void recordUsageDuration(String packageName, long duration) {
        XposedBridge.log(TAG + ": 使用时长 - " + packageName + ": " + duration + "ms");
        recordEvent("usage_duration", packageName + ":" + duration, System.currentTimeMillis());
    }
    
    private static void saveToStorage(String data) {
        // 保存数据到存储
        // 可以使用 SharedPreferences、文件或数据库
        try {
            // 简单的文件保存示例
            java.io.FileWriter writer = new java.io.FileWriter("/data/data/com.enterprise.devicemanager/usage.log", true);
            writer.write(data + "\n");
            writer.close();
        } catch (Exception e) {
            XposedBridge.log(TAG + ": 保存数据失败 - " + e.getMessage());
        }
    }
}

案例二：系统性能优化模块

需求背景

针对低端设备的性能优化，通过 Xposed 模块实现内存管理、CPU 调度优化和电池续航改善。

// SystemPerformanceOptimizer.java - 系统性能优化
package com.performance.optimizer;

import android.app.ActivityManager;
import android.content.Context;
import android.os.PowerManager;
import java.lang.reflect.Method;

import de.robv.android.xposed.IXposedHookLoadPackage;
import de.robv.android.xposed.XC_MethodHook;
import de.robv.android.xposed.XC_MethodReplacement;
import de.robv.android.xposed.XposedBridge;
import de.robv.android.xposed.XposedHelpers;
import de.robv.android.xposed.callbacks.XC_LoadPackage.LoadPackageParam;

public class SystemPerformanceOptimizer implements IXposedHookLoadPackage {
    
    private static final String TAG = "PerformanceOptimizer";
    
    @Override
    public void handleLoadPackage(LoadPackageParam lpparam) throws Throwable {
        // 系统框架优化
        if ("android".equals(lpparam.packageName)) {
            optimizeSystemFramework(lpparam);
        }
        
        // 应用级优化
        optimizeApplicationPerformance(lpparam);
        
        // 内存管理优化
        optimizeMemoryManagement(lpparam);
        
        // 电池优化
        optimizeBatteryUsage(lpparam);
    }
    
    private void optimizeSystemFramework(LoadPackageParam lpparam) {
        // 优化 ActivityManager
        optimizeActivityManager(lpparam);
        
        // 优化 WindowManager
        optimizeWindowManager(lpparam);
        
        // 优化 PackageManager
        optimizePackageManager(lpparam);
    }
    
    private void optimizeActivityManager(LoadPackageParam lpparam) {
        try {
            // Hook ActivityManagerService.startActivity
            XposedHelpers.findAndHookMethod(
                "com.android.server.am.ActivityManagerService",
                lpparam.classLoader,
                "startActivity",
                // 参数较多，使用通用 Hook 方式
                new XC_MethodHook() {
                    @Override
                    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                        // 预加载优化
                        preloadOptimization();
                    }
                    
                    @Override
                    protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                        // 启动后优化
                        postLaunchOptimization();
                    }
                }
            );
            
            // Hook 进程管理
            XposedHelpers.findAndHookMethod(
                "com.android.server.am.ActivityManagerService",
                lpparam.classLoader,
                "killBackgroundProcesses",
                String.class,
                int.class,
                new XC_MethodHook() {
                    @Override
                    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                        String packageName = (String) param.args[0];
                        
                        // 智能进程管理
                        if (shouldPreserveProcess(packageName)) {
                            XposedBridge.log(TAG + ": 保护进程 - " + packageName);
                            param.setResult(null); // 阻止杀死进程
                        }
                    }
                }
            );
            
        } catch (Throwable t) {
            XposedBridge.log(TAG + ": ActivityManager 优化失败 - " + t.getMessage());
        }
    }
    
    private void optimizeWindowManager(LoadPackageParam lpparam) {
        try {
            // Hook 窗口动画
            XposedHelpers.findAndHookMethod(
                "com.android.server.wm.WindowManagerService",
                lpparam.classLoader,
                "setAnimationScale",
                int.class,
                float.class,
                new XC_MethodHook() {
                    @Override
                    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                        int which = (Integer) param.args[0];
                        float scale = (Float) param.args[1];
                        
                        // 在低端设备上减少动画
                        if (isLowEndDevice() && scale > 0.5f) {
                            param.args[1] = 0.5f;
                            XposedBridge.log(TAG + ": 降低动画比例以提升性能");
                        }
                    }
                }
            );
            
            // Hook 窗口渲染
            optimizeWindowRendering(lpparam);
            
        } catch (Throwable t) {
            XposedBridge.log(TAG + ": WindowManager 优化失败 - " + t.getMessage());
        }
    }
    
    private void optimizeWindowRendering(LoadPackageParam lpparam) {
        try {
            // Hook Surface 创建
            XposedHelpers.findAndHookMethod(
                "android.view.Surface",
                lpparam.classLoader,
                "nativeCreate",
                long.class,
                new XC_MethodHook() {
                    @Override
                    protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                        // 优化 Surface 配置
                        optimizeSurfaceConfiguration(param);
                    }
                }
            );
            
        } catch (Throwable t) {
            XposedBridge.log(TAG + ": 窗口渲染优化失败 - " + t.getMessage());
        }
    }
    
    private void optimizeApplicationPerformance(LoadPackageParam lpparam) {
        try {
            // Hook Application.onCreate
            XposedHelpers.findAndHookMethod(
                "android.app.Application",
                lpparam.classLoader,
                "onCreate",
                new XC_MethodHook() {
                    @Override
                    protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                        android.app.Application app = (android.app.Application) param.thisObject;
                        
                        // 应用启动优化
                        optimizeAppStartup(app, lpparam.packageName);
                    }
                }
            );
            
            // Hook Activity 生命周期
            optimizeActivityLifecycle(lpparam);
            
        } catch (Throwable t) {
            XposedBridge.log(TAG + ": 应用性能优化失败 - " + t.getMessage());
        }
    }
    
    private void optimizeAppStartup(android.app.Application app, String packageName) {
        try {
            Context context = app.getApplicationContext();
            
            // 预加载关键资源
            preloadCriticalResources(context);
            
            // 优化线程池配置
            optimizeThreadPool(context);
            
            // 设置性能模式
            setPerformanceMode(context, packageName);
            
            XposedBridge.log(TAG + ": 应用启动优化完成 - " + packageName);
            
        } catch (Exception e) {
            XposedBridge.log(TAG + ": 应用启动优化失败 - " + e.getMessage());
        }
    }
    
    private void optimizeActivityLifecycle(LoadPackageParam lpparam) {
        try {
            // Hook Activity.onResume
            XposedHelpers.findAndHookMethod(
                "android.app.Activity",
                lpparam.classLoader,
                "onResume",
                new XC_MethodHook() {
                    @Override
                    protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                        android.app.Activity activity = (android.app.Activity) param.thisObject;
                        
                        // 前台优化
                        optimizeForegroundActivity(activity);
                    }
                }
            );
            
            // Hook Activity.onPause
            XposedHelpers.findAndHookMethod(
                "android.app.Activity",
                lpparam.classLoader,
                "onPause",
                new XC_MethodHook() {
                    @Override
                    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                        android.app.Activity activity = (android.app.Activity) param.thisObject;
                        
                        // 后台优化
                        optimizeBackgroundActivity(activity);
                    }
                }
            );
            
        } catch (Throwable t) {
            XposedBridge.log(TAG + ": Activity 生命周期优化失败 - " + t.getMessage());
        }
    }
    
    private void optimizeMemoryManagement(LoadPackageParam lpparam) {
        try {
            // Hook GC 触发
            XposedHelpers.findAndHookMethod(
                "java.lang.System",
                lpparam.classLoader,
                "gc",
                new XC_MethodHook() {
                    @Override
                    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                        // 智能 GC 调度
                        if (!shouldTriggerGC()) {
                            param.setResult(null); // 阻止不必要的 GC
                        }
                    }
                }
            );
            
            // Hook 内存分配
            optimizeMemoryAllocation(lpparam);
            
            // Hook Bitmap 操作
            optimizeBitmapOperations(lpparam);
            
        } catch (Throwable t) {
            XposedBridge.log(TAG + ": 内存管理优化失败 - " + t.getMessage());
        }
    }
    
    private void optimizeMemoryAllocation(LoadPackageParam lpparam) {
        try {
            // Hook ArrayList 扩容
            XposedHelpers.findAndHookMethod(
                "java.util.ArrayList",
                lpparam.classLoader,
                "ensureCapacity",
                int.class,
                new XC_MethodHook() {
                    @Override
                    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                        int minCapacity = (Integer) param.args[0];
                        
                        // 优化扩容策略
                        if (minCapacity > 1000) {
                            // 大容量时使用更保守的扩容策略
                            param.args[0] = Math.min(minCapacity, 2000);
                        }
                    }
                }
            );
            
        } catch (Throwable t) {
            XposedBridge.log(TAG + ": 内存分配优化失败 - " + t.getMessage());
        }
    }
    
    private void optimizeBitmapOperations(LoadPackageParam lpparam) {
        try {
            // Hook Bitmap.createBitmap
            XposedHelpers.findAndHookMethod(
                "android.graphics.Bitmap",
                lpparam.classLoader,
                "createBitmap",
                int.class,
                int.class,
                android.graphics.Bitmap.Config.class,
                new XC_MethodHook() {
                    @Override
                    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                        int width = (Integer) param.args[0];
                        int height = (Integer) param.args[1];
                        android.graphics.Bitmap.Config config = (android.graphics.Bitmap.Config) param.args[2];
                        
                        // 大图片优化
                        if (width * height > 1920 * 1080) {
                            // 降低大图片质量
                            if (config == android.graphics.Bitmap.Config.ARGB_8888) {
                                param.args[2] = android.graphics.Bitmap.Config.RGB_565;
                                XposedBridge.log(TAG + ": 降低大图片质量以节省内存");
                            }
                        }
                    }
                }
            );
            
        } catch (Throwable t) {
            XposedBridge.log(TAG + ": Bitmap 优化失败 - " + t.getMessage());
        }
    }
    
    private void optimizeBatteryUsage(LoadPackageParam lpparam) {
        try {
            // Hook PowerManager
            XposedHelpers.findAndHookMethod(
                "android.os.PowerManager",
                lpparam.classLoader,
                "newWakeLock",
                int.class,
                String.class,
                new XC_MethodHook() {
                    @Override
                    protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                        PowerManager.WakeLock wakeLock = (PowerManager.WakeLock) param.getResult();
                        
                        // 优化 WakeLock 使用
                        optimizeWakeLock(wakeLock, lpparam.packageName);
                    }
                }
            );
            
            // Hook 网络请求
            optimizeNetworkUsage(lpparam);
            
            // Hook CPU 使用
            optimizeCpuUsage(lpparam);
            
        } catch (Throwable t) {
            XposedBridge.log(TAG + ": 电池优化失败 - " + t.getMessage());
        }
    }
    
    // 辅助方法实现
    private void preloadOptimization() {
        // 预加载优化逻辑
        XposedBridge.log(TAG + ": 执行预加载优化");
    }
    
    private void postLaunchOptimization() {
        // 启动后优化逻辑
        XposedBridge.log(TAG + ": 执行启动后优化");
    }
    
    private boolean shouldPreserveProcess(String packageName) {
        // 判断是否应该保护进程
        String[] importantApps = {
            "com.android.systemui",
            "com.android.phone",
            "com.android.settings"
        };
        
        for (String app : importantApps) {
            if (app.equals(packageName)) {
                return true;
            }
        }
        
        return false;
    }
    
    private boolean isLowEndDevice() {
        try {
            // 检查设备性能
            ActivityManager.MemoryInfo memInfo = new ActivityManager.MemoryInfo();
            // 获取内存信息的逻辑
            
            // 简单判断：内存小于 2GB 认为是低端设备
            return memInfo.totalMem < 2L * 1024 * 1024 * 1024;
        } catch (Exception e) {
            return false;
        }
    }
    
    private void optimizeSurfaceConfiguration(XC_MethodHook.MethodHookParam param) {
        // Surface 配置优化
        XposedBridge.log(TAG + ": 优化 Surface 配置");
    }
    
    private void preloadCriticalResources(Context context) {
        // 预加载关键资源
        XposedBridge.log(TAG + ": 预加载关键资源");
    }
    
    private void optimizeThreadPool(Context context) {
        // 优化线程池配置
        XposedBridge.log(TAG + ": 优化线程池配置");
    }
    
    private void setPerformanceMode(Context context, String packageName) {
        // 设置性能模式
        XposedBridge.log(TAG + ": 设置性能模式 - " + packageName);
    }
    
    private void optimizeForegroundActivity(android.app.Activity activity) {
        // 前台 Activity 优化
        XposedBridge.log(TAG + ": 优化前台 Activity - " + activity.getClass().getSimpleName());
    }
    
    private void optimizeBackgroundActivity(android.app.Activity activity) {
        // 后台 Activity 优化
        XposedBridge.log(TAG + ": 优化后台 Activity - " + activity.getClass().getSimpleName());
    }
    
    private boolean shouldTriggerGC() {
        // 判断是否应该触发 GC
        Runtime runtime = Runtime.getRuntime();
        long freeMemory = runtime.freeMemory();
        long totalMemory = runtime.totalMemory();
        
        // 当可用内存低于 20% 时才触发 GC
        return (freeMemory * 100 / totalMemory) < 20;
    }
    
    private void optimizeWakeLock(PowerManager.WakeLock wakeLock, String packageName) {
        // WakeLock 优化
        XposedBridge.log(TAG + ": 优化 WakeLock - " + packageName);
        
        // 可以设置超时时间，防止长时间持有
        try {
            Method setReferenceCounted = wakeLock.getClass().getMethod("setReferenceCounted", boolean.class);
            setReferenceCounted.invoke(wakeLock, false);
        } catch (Exception e) {
            XposedBridge.log(TAG + ": WakeLock 优化失败 - " + e.getMessage());
        }
    }
    
    private void optimizeNetworkUsage(LoadPackageParam lpparam) {
        // 网络使用优化
        XposedBridge.log(TAG + ": 优化网络使用");
    }
    
    private void optimizeCpuUsage(LoadPackageParam lpparam) {
        // CPU 使用优化
        XposedBridge.log(TAG + ": 优化 CPU 使用");
    }
}

案例三：兼容性解决方案

需求背景

解决应用在不同 Android 版本间的兼容性问题，特别是 API 变更和行为差异。

// CompatibilityResolver.java - 兼容性解决方案
package com.compatibility.resolver;

import android.os.Build;
import java.lang.reflect.Method;

import de.robv.android.xposed.IXposedHookLoadPackage;
import de.robv.android.xposed.XC_MethodHook;
import de.robv.android.xposed.XC_MethodReplacement;
import de.robv.android.xposed.XposedBridge;
import de.robv.android.xposed.XposedHelpers;
import de.robv.android.xposed.callbacks.XC_LoadPackage.LoadPackageParam;

public class CompatibilityResolver implements IXposedHookLoadPackage {
    
    private static final String TAG = "CompatibilityResolver";
    
    @Override
    public void handleLoadPackage(LoadPackageParam lpparam) throws Throwable {
        // API 兼容性处理
        resolveApiCompatibility(lpparam);
        
        // 权限兼容性处理
        resolvePermissionCompatibility(lpparam);
        
        // 存储兼容性处理
        resolveStorageCompatibility(lpparam);
        
        // 网络兼容性处理
        resolveNetworkCompatibility(lpparam);
    }
    
    private void resolveApiCompatibility(LoadPackageParam lpparam) {
        // 解决不同 Android 版本的 API 差异
        resolveNotificationCompatibility(lpparam);
        resolveFileProviderCompatibility(lpparam);
        resolveRuntimePermissionCompatibility(lpparam);
    }
    
    private void resolveNotificationCompatibility(LoadPackageParam lpparam) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            // Android 8.0+ 通知渠道兼容性
            try {
                XposedHelpers.findAndHookMethod(
                    "android.app.NotificationManager",
                    lpparam.classLoader,
                    "notify",
                    int.class,
                    android.app.Notification.class,
                    new XC_MethodHook() {
                        @Override
                        protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                            android.app.Notification notification = (android.app.Notification) param.args[1];
                            
                            // 自动创建通知渠道
                            if (notification.getChannelId() == null || notification.getChannelId().isEmpty()) {
                                createDefaultNotificationChannel(param.thisObject, lpparam.packageName);
                                
                                // 设置默认渠道
                                setNotificationChannel(notification, "default_channel");
                            }
                        }
                    }
                );
                
            } catch (Throwable t) {
                XposedBridge.log(TAG + ": 通知兼容性处理失败 - " + t.getMessage());
            }
        }
    }
    
    private void resolveFileProviderCompatibility(LoadPackageParam lpparam) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            // Android 7.0+ FileProvider 兼容性
            try {
                XposedHelpers.findAndHookMethod(
                    "android.content.Intent",
                    lpparam.classLoader,
                    "setData",
                    android.net.Uri.class,
                    new XC_MethodHook() {
                        @Override
                        protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                            android.net.Uri uri = (android.net.Uri) param.args[0];
                            
                            if (uri != null && "file".equals(uri.getScheme())) {
                                // 自动转换为 content:// URI
                                android.net.Uri contentUri = convertToContentUri(uri, lpparam.packageName);
                                if (contentUri != null) {
                                    param.args[0] = contentUri;
                                    XposedBridge.log(TAG + ": 自动转换文件 URI 为 content URI");
                                }
                            }
                        }
                    }
                );
                
            } catch (Throwable t) {
                XposedBridge.log(TAG + ": FileProvider 兼容性处理失败 - " + t.getMessage());
            }
        }
    }
    
    private void resolveRuntimePermissionCompatibility(LoadPackageParam lpparam) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            // Android 6.0+ 运行时权限兼容性
            try {
                XposedHelpers.findAndHookMethod(
                    "android.content.ContextWrapper",
                    lpparam.classLoader,
                    "checkSelfPermission",
                    String.class,
                    new XC_MethodHook() {
                        @Override
                        protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                            String permission = (String) param.args[0];
                            int result = (Integer) param.getResult();
                            
                            // 为旧应用自动授予权限
                            if (result == android.content.pm.PackageManager.PERMISSION_DENIED) {
                                if (shouldAutoGrantPermission(lpparam.packageName, permission)) {
                                    param.setResult(android.content.pm.PackageManager.PERMISSION_GRANTED);
                                    XposedBridge.log(TAG + ": 自动授予权限 - " + permission);
                                }
                            }
                        }
                    }
                );
                
            } catch (Throwable t) {
                XposedBridge.log(TAG + ": 运行时权限兼容性处理失败 - " + t.getMessage());
            }
        }
    }
    
    private void resolvePermissionCompatibility(LoadPackageParam lpparam) {
        // 权限系统兼容性
        resolveLocationPermissionCompatibility(lpparam);
        resolveStoragePermissionCompatibility(lpparam);
        resolveCameraPermissionCompatibility(lpparam);
    }
    
    private void resolveLocationPermissionCompatibility(LoadPackageParam lpparam) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
            // Android 10+ 位置权限兼容性
            try {
                XposedHelpers.findAndHookMethod(
                    "android.location.LocationManager",
                    lpparam.classLoader,
                    "requestLocationUpdates",
                    String.class,
                    long.class,
                    float.class,
                    android.location.LocationListener.class,
                    new XC_MethodHook() {
                        @Override
                        protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                            // 检查后台位置权限
                            if (!hasBackgroundLocationPermission(lpparam.packageName)) {
                                // 降级为前台位置权限
                                adjustLocationRequest(param);
                            }
                        }
                    }
                );
                
            } catch (Throwable t) {
                XposedBridge.log(TAG + ": 位置权限兼容性处理失败 - " + t.getMessage());
            }
        }
    }
    
    private void resolveStorageCompatibility(LoadPackageParam lpparam) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
            // Android 10+ 分区存储兼容性
            resolveMediaStoreCompatibility(lpparam);
            resolveScopedStorageCompatibility(lpparam);
        }
    }
    
    private void resolveMediaStoreCompatibility(LoadPackageParam lpparam) {
        try {
            // Hook MediaStore 查询
            XposedHelpers.findAndHookMethod(
                "android.content.ContentResolver",
                lpparam.classLoader,
                "query",
                android.net.Uri.class,
                String[].class,
                String.class,
                String[].class,
                String.class,
                new XC_MethodHook() {
                    @Override
                    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                        android.net.Uri uri = (android.net.Uri) param.args[0];
                        
                        if (isMediaStoreUri(uri)) {
                            // 调整查询参数以兼容分区存储
                            adjustMediaStoreQuery(param);
                        }
                    }
                }
            );
            
        } catch (Throwable t) {
            XposedBridge.log(TAG + ": MediaStore 兼容性处理失败 - " + t.getMessage());
        }
    }
    
    private void resolveScopedStorageCompatibility(LoadPackageParam lpparam) {
        try {
            // Hook 文件访问
            XposedHelpers.findAndHookMethod(
                "java.io.File",
                lpparam.classLoader,
                "exists",
                new XC_MethodHook() {
                    @Override
                    protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                        java.io.File file = (java.io.File) param.thisObject;
                        boolean exists = (Boolean) param.getResult();
                        
                        if (!exists && isLegacyStoragePath(file.getAbsolutePath())) {
                            // 尝试从新的存储位置查找文件
                            java.io.File newFile = mapToScopedStorage(file, lpparam.packageName);
                            if (newFile != null && newFile.exists()) {
                                param.setResult(true);
                                XposedBridge.log(TAG + ": 重定向到分区存储路径");
                            }
                        }
                    }
                }
            );
            
        } catch (Throwable t) {
            XposedBridge.log(TAG + ": 分区存储兼容性处理失败 - " + t.getMessage());
        }
    }
    
    private void resolveNetworkCompatibility(LoadPackageParam lpparam) {
        // 网络安全配置兼容性
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
            resolveNetworkSecurityConfigCompatibility(lpparam);
        }
        
        // HTTP 明文传输兼容性
        resolveHttpCleartextCompatibility(lpparam);
    }
    
    private void resolveNetworkSecurityConfigCompatibility(LoadPackageParam lpparam) {
        try {
            // Hook SSL 连接
            XposedHelpers.findAndHookMethod(
                "javax.net.ssl.HttpsURLConnection",
                lpparam.classLoader,
                "setDefaultHostnameVerifier",
                javax.net.ssl.HostnameVerifier.class,
                new XC_MethodHook() {
                    @Override
                    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                        // 为旧应用提供宽松的主机名验证
                        if (needsLegacyNetworkBehavior(lpparam.packageName)) {
                            javax.net.ssl.HostnameVerifier verifier = createLegacyHostnameVerifier();
                            param.args[0] = verifier;
                        }
                    }
                }
            );
            
        } catch (Throwable t) {
            XposedBridge.log(TAG + ": 网络安全配置兼容性处理失败 - " + t.getMessage());
        }
    }
    
    // 辅助方法实现
    private void createDefaultNotificationChannel(Object notificationManager, String packageName) {
        try {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                // 使用反射创建通知渠道
                Class<?> channelClass = Class.forName("android.app.NotificationChannel");
                Object channel = channelClass.getConstructor(String.class, CharSequence.class, int.class)
                    .newInstance("default_channel", "Default Channel", 3); // IMPORTANCE_DEFAULT = 3
                
                Method createChannel = notificationManager.getClass().getMethod("createNotificationChannel", channelClass);
                createChannel.invoke(notificationManager, channel);
                
                XposedBridge.log(TAG + ": 创建默认通知渠道 - " + packageName);
            }
        } catch (Exception e) {
            XposedBridge.log(TAG + ": 创建通知渠道失败 - " + e.getMessage());
        }
    }
    
    private void setNotificationChannel(android.app.Notification notification, String channelId) {
        try {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                Method setChannelId = notification.getClass().getMethod("setChannelId", String.class);
                setChannelId.invoke(notification, channelId);
            }
        } catch (Exception e) {
            XposedBridge.log(TAG + ": 设置通知渠道失败 - " + e.getMessage());
        }
    }
    
    private android.net.Uri convertToContentUri(android.net.Uri fileUri, String packageName) {
        try {
            // 简化的 FileProvider URI 转换
            String authority = packageName + ".fileprovider";
            String path = fileUri.getPath();
            
            return android.net.Uri.parse("content://" + authority + "/files" + path);
        } catch (Exception e) {
            XposedBridge.log(TAG + ": URI 转换失败 - " + e.getMessage());
            return null;
        }
    }
    
    private boolean shouldAutoGrantPermission(String packageName, String permission) {
        // 检查是否应该自动授予权限
        // 这里可以根据应用的目标 SDK 版本和权限类型来判断
        
        String[] autoGrantPermissions = {
            "android.permission.WRITE_EXTERNAL_STORAGE",
            "android.permission.READ_EXTERNAL_STORAGE"
        };
        
        for (String autoPermission : autoGrantPermissions) {
            if (autoPermission.equals(permission)) {
                return isLegacyApp(packageName);
            }
        }
        
        return false;
    }
    
    private boolean isLegacyApp(String packageName) {
        // 判断是否为旧版应用
        // 可以通过检查目标 SDK 版本来判断
        return true; // 简化实现
    }
    
    private boolean hasBackgroundLocationPermission(String packageName) {
        // 检查是否有后台位置权限
        return false; // 简化实现
    }
    
    private void adjustLocationRequest(XC_MethodHook.MethodHookParam param) {
        // 调整位置请求参数
        XposedBridge.log(TAG + ": 调整位置请求以适应权限限制");
    }
    
    private boolean isMediaStoreUri(android.net.Uri uri) {
        return uri != null && uri.toString().contains("content://media");
    }
    
    private void adjustMediaStoreQuery(XC_MethodHook.MethodHookParam param) {
        // 调整 MediaStore 查询参数
        XposedBridge.log(TAG + ": 调整 MediaStore 查询参数");
    }
    
    private boolean isLegacyStoragePath(String path) {
        return path.startsWith("/sdcard/") || path.startsWith("/storage/emulated/0/");
    }
    
    private java.io.File mapToScopedStorage(java.io.File originalFile, String packageName) {
        // 映射到分区存储路径
        String originalPath = originalFile.getAbsolutePath();
        String newPath = originalPath.replace("/sdcard/", "/storage/emulated/0/Android/data/" + packageName + "/files/");
        return new java.io.File(newPath);
    }
    
    private boolean needsLegacyNetworkBehavior(String packageName) {
        // 判断是否需要旧版网络行为
        return isLegacyApp(packageName);
    }
    
    private javax.net.ssl.HostnameVerifier createLegacyHostnameVerifier() {
        return new javax.net.ssl.HostnameVerifier() {
            @Override
            public boolean verify(String hostname, javax.net.ssl.SSLSession session) {
                // 宽松的主机名验证
                return true;
            }
        };
    }
    
    private void resolveStoragePermissionCompatibility(LoadPackageParam lpparam) {
        // 存储权限兼容性处理
        XposedBridge.log(TAG + ": 处理存储权限兼容性");
    }
    
    private void resolveCameraPermissionCompatibility(LoadPackageParam lpparam) {
        // 相机权限兼容性处理
        XposedBridge.log(TAG + ": 处理相机权限兼容性");
    }
    
    private void resolveHttpCleartextCompatibility(LoadPackageParam lpparam) {
        // HTTP 明文传输兼容性处理
        XposedBridge.log(TAG + ": 处理 HTTP 明文传输兼容性");
    }
}

总结

Xposed 高级应用的核心要点：

🎯 企业级应用

  1. 设备管理：应用控制、数据保护、行为监控
  2. 策略执行：工作时间强制、安装控制、使用限制
  3. 安全保护：数据加密、传输控制、敏感信息保护
  4. 合规监控：使用记录、审计日志、违规检测

✅ 性能优化

  • 系统框架优化和资源管理
  • 内存管理和垃圾回收优化
  • 电池续航和 CPU 调度改善
  • 应用启动和响应速度提升

🚀 兼容性解决

  • API 版本差异处理
  • 权限系统兼容性
  • 存储访问模式适配
  • 网络安全配置调整

💡 最佳实践

  • 模块化设计和功能分离
  • 完善的错误处理和日志记录
  • 性能影响最小化
  • 用户体验优化

⚠️ 注意事项

  • 遵守企业政策和法律法规
  • 保护用户隐私和数据安全
  • 确保系统稳定性和兼容性
  • 及时更新和维护模块

通过这些高级应用案例，展示了 Xposed 在复杂场景下的强大能力和实际价值！

Xposed 的高级应用需要深入理解 Android 系统机制，合理的架构设计和负责任的使用态度。

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