直接放代码
package com.xirtam.hello; import android.app.Application;
import android.content.Context;
import android.content.pm.PackageManager;
import android.os.Build; import java.io.File;
import java.io.FileNotFoundException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List; import dalvik.system.PathClassLoader;
import de.robv.android.xposed.IXposedHookLoadPackage;
import de.robv.android.xposed.XC_MethodHook;
import de.robv.android.xposed.XposedHelpers;
import de.robv.android.xposed.callbacks.XC_LoadPackage; /**
* @author DX
* 这种方案建议只在开发调试的时候使用，因为这将损耗一些性能(需要额外加载apk文件)，调试没问题后，直接修改xposed_init文件为正确的类即可
* 可以实现免重启，由于存在缓存，需要杀死宿主程序以后才能生效
* 这种免重启的方式针对某些特殊情况的hook无效
* 例如我们需要implements IXposedHookZygoteInit,并将自己的一个服务注册为系统服务，这种就必须重启了
* Created by DX on 2017/10/4.
*/ public class HookLoader implements IXposedHookLoadPackage {
//按照实际使用情况修改下面几项的值
/**
* 当前Xposed模块的包名,方便寻找apk文件 TODO 需要配置
*/
private final String modulePackage = "com.xirtam.hello";
/**
* 宿主程序的包名(允许多个),过滤无意义的包名,防止无意义的apk文件加载
*/
private static List<String> hostAppPackages = new ArrayList<>(); static {
// TODO: Add the package name of application your want to hook!
hostAppPackages.add("com.xirtam.hello");
} /**
* 实际hook逻辑处理类 TODO 需要配置
*/
private final String handleHookClass = TestHook2.class.getName();
/**
* 实际hook逻辑处理类的入口方法
*/
private final String handleHookMethod = "handleLoadPackage"; @Override
public void handleLoadPackage(final XC_LoadPackage.LoadPackageParam loadPackageParam) throws Throwable {
if (hostAppPackages.contains(loadPackageParam.packageName)) {
//将loadPackageParam的classloader替换为宿主程序Application的classloader,解决宿主程序存在多个.dex文件时,有时候ClassNotFound的问题
XposedHelpers.findAndHookMethod(Application.class, "attach", Context.class, new XC_MethodHook() {
@Override
protected void afterHookedMethod(MethodHookParam param) throws Throwable {
Context context = (Context) param.args[0];
loadPackageParam.classLoader = context.getClassLoader();
invokeHandleHookMethod(context, modulePackage, handleHookClass, handleHookMethod, loadPackageParam);
}
});
}
} /**
* 安装app以后，系统会在/data/app/下备份了一份.apk文件，通过动态加载这个apk文件，调用相应的方法
* 这样就可以实现，只需要第一次重启，以后修改hook代码就不用重启了
*
* @param context context参数
* @param modulePackageName 当前模块的packageName
* @param handleHookClass 指定由哪一个类处理相关的hook逻辑
* @param loadPackageParam 传入XC_LoadPackage.LoadPackageParam参数
* @throws Throwable 抛出各种异常,包括具体hook逻辑的异常,寻找apk文件异常,反射加载Class异常等
*/
private void invokeHandleHookMethod(Context context, String modulePackageName, String handleHookClass, String handleHookMethod, XC_LoadPackage.LoadPackageParam loadPackageParam) throws Throwable {
// File apkFile = findApkFileBySDK(modulePackageName);//会受其它Xposed模块hook 当前宿主程序的SDK_INT的影响
// File apkFile = findApkFile(modulePackageName);
//原来的两种方式不是很好,改用这种新的方式
File apkFile = findApkFile(context, modulePackageName);
if (apkFile == null) {
throw new RuntimeException("寻找模块apk失败");
}
//加载指定的hook逻辑处理类，并调用它的handleHook方法
PathClassLoader pathClassLoader = new PathClassLoader(apkFile.getAbsolutePath(), ClassLoader.getSystemClassLoader());
Class<?> cls = Class.forName(handleHookClass, true, pathClassLoader);
Object instance = cls.newInstance();
Method method = cls.getDeclaredMethod(handleHookMethod, XC_LoadPackage.LoadPackageParam.class);
method.invoke(instance, loadPackageParam);
} /**
* 根据包名构建目标Context,并调用getPackageCodePath()来定位apk
*
* @param context context参数
* @param modulePackageName 当前模块包名
* @return return apk file
*/
private File findApkFile(Context context, String modulePackageName) {
if (context == null) {
return null;
}
try {
Context moudleContext = context.createPackageContext(modulePackageName, Context.CONTEXT_INCLUDE_CODE | Context.CONTEXT_IGNORE_SECURITY);
String apkPath = moudleContext.getPackageCodePath();
return new File(apkPath);
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
return null;
} /**
* 寻找这个Android设备上的当前apk文件,不受其它Xposed模块hook SDK_INT的影响
*
* @param modulePackageName 当前模块包名
* @return File 返回apk文件
* @throws FileNotFoundException 在/data/app/下的未找到本模块apk文件,请检查本模块包名配置是否正确.
* 具体检查build.gradle中的applicationId和AndroidManifest.xml中的package
*/
@Deprecated
private File findApkFile(String modulePackageName) throws FileNotFoundException {
File apkFile = null;
try {
apkFile = findApkFileAfterSDK21(modulePackageName);
} catch (Exception e) {
try {
apkFile = findApkFileBeforeSDK21(modulePackageName);
} catch (Exception e2) {
//忽略这个异常
}
}
if (apkFile == null) {
throw new FileNotFoundException("没在/data/app/下找到文件对应的apk文件");
}
return apkFile;
} /**
* 根据当前的SDK_INT寻找这个Android设备上的当前apk文件
*
* @param modulePackageName 当前模块包名
* @return File 返回apk文件
* @throws FileNotFoundException 在/data/app/下的未找到本模块apk文件,请检查本模块包名配置是否正确.
* 具体检查build.gradle中的applicationId和AndroidManifest.xml中的package
*/
@Deprecated
private File findApkFileBySDK(String modulePackageName) throws FileNotFoundException {
File apkFile;
//当前Xposed模块hook了Build.VERSION.SDK_INT不用担心，因为这是发生在hook之前，不会有影响
//但是其它的Xposed模块hook了当前宿主的这个值以后，就会有影响了,所以这里没有使用这个方法
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
apkFile = findApkFileAfterSDK21(modulePackageName);
} else {
apkFile = findApkFileBeforeSDK21(modulePackageName);
}
return apkFile;
} /**
* 寻找apk文件(api_21之后)
* 在Android sdk21以及之后，apk文件的路径发生了变化
*
* @param packageName 当前模块包名
* @return File 返回apk文件
* @throws FileNotFoundException apk文件未找到
*/
@Deprecated
private File findApkFileAfterSDK21(String packageName) throws FileNotFoundException {
File apkFile;
File path = new File(String.format("/data/app/%s-%s", packageName, "1"));
if (!path.exists()) {
path = new File(String.format("/data/app/%s-%s", packageName, "2"));
}
if (!path.exists() || !path.isDirectory()) {
throw new FileNotFoundException(String.format("没找到目录/data/app/%s-%s", packageName, "1/2"));
}
apkFile = new File(path, "base.apk");
if (!apkFile.exists() || apkFile.isDirectory()) {
throw new FileNotFoundException(String.format("没找到文件/data/app/%s-%s/base.apk", packageName, "1/2"));
}
return apkFile;
} /**
* 寻找apk文件(api_21之前)
*
* @param packageName 当前模块包名
* @return File 返回apk文件
* @throws FileNotFoundException apk文件未找到
*/
@Deprecated
private File findApkFileBeforeSDK21(String packageName) throws FileNotFoundException {
File apkFile = new File(String.format("/data/app/%s-%s.apk", packageName, "1"));
if (!apkFile.exists()) {
apkFile = new File(String.format("/data/app/%s-%s.apk", packageName, "2"));
}
if (!apkFile.exists() || apkFile.isDirectory()) {
throw new FileNotFoundException(String.format("没找到文件/data/app/%s-%s.apk", packageName, "1/2"));
}
return apkFile;
}
}
配置一下3处TODO标签的位置，然后把xposed_init文件中的配置改成这个类即可，并不适用于所有情况的免重启，注释写的很明确了，感谢原作者，本文代码有少量修改。