本文主要向大家介绍了C/C++知识点之Xposed hook(android），通过具体的内容向大家展示，希望对大家学习C/C++知识点有所帮助。

先写一个测试程序获取 id

public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);        //控件
        TextView test = findViewById(R.id.test);
        Context context = getApplicationContext();        //权限        //<uses-permission android:name=""android.permission.READ_PHONE_STATE"" />        if (context.getPackageManager().checkPermission(Manifest.permission.READ_PHONE_STATE,
                context.getPackageName()) == PackageManager.PERMISSION_GRANTED)
        {
            String  Imei = ((TelephonyManager) getSystemService(TELEPHONY_SERVICE)).getDeviceId();
            Log.e(""soho"",Imei);
            test.setText(Imei);
        }        else
        {
            Log.e(""soho"",""no permission"");
        }

    }
}

开始 hook
新建一个项目
在application中增加模块说明

 <meta-data android:name=""xposedmodule"" android:value=""true""></meta-data>        <meta-data android:name=""xposeddescription"" android:value=""Xposed插件""></meta-data>        <meta-data android:name=""xposedminversion"" android:value=""54""></meta-data>/////////////////////////////////////////////////////////////<?xml version=""1.0"" encoding=""utf-8""?><manifest xmlns:android=""//schemas.android.com/apk/res/android""    package=""com.example.liuhailong.hook"">    <application        android:allowBackup=""true""        android:icon=""@mipmap/ic_launcher""        android:label=""@string/app_name""        android:roundIcon=""@mipmap/ic_launcher_round""        android:supportsRtl=""true""        android:theme=""@style/AppTheme"">        <activity android:name="".MainActivity"">            <intent-filter>                <action android:name=""android.intent.action.MAIN"" />                <category android:name=""android.intent.category.LAUNCHER"" />            </intent-filter>        </activity>        <meta-data android:name=""xposedmodule"" android:value=""true""></meta-data>        <meta-data android:name=""xposeddescription"" android:value=""Xposed插件""></meta-data>        <meta-data android:name=""xposedminversion"" android:value=""54""></meta-data>    </application></manifest>

导入 xposed jar
先在 app 中新建 一个文件夹同时必须名为 lib(在 project 视图)

复制模块进去

打开模块依赖

再添加

修改 scope 为

加载下或者运行一下不行重启 as
会出现 3 个目录说明加载成功

创建一个类  名称必须为Main实现IXposedHookLoadPackage接口

实现方法

声明主入口类路径
在 main文件夹内建立 assets文件夹必须名为assets
在assets文件夹内新建一个 xposed_init的文件名称也要一样
在文件中声明入口类名称

使用 findAndHookMethod

    package com.example.liuhailong.hook;import android.telephony.TelephonyManager;import de.robv.android.xposed.IXposedHookLoadPackage;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;public class Main implements IXposedHookLoadPackage {    @Override    public void handleLoadPackage(XC_LoadPackage.LoadPackageParam loadPackageParam) throws Throwable {        //先判断要 hook的包也就是那个 app        if(!loadPackageParam.packageName.equals(""com.example.liuhailong"")){            //打印日志这个打印在 apk上
            XposedBridge.log(loadPackageParam.packageName);            return;
        }  
        //打到对应的方法 进行替换 replaceHookedMethod替换方法        //参数1：名称 参数2：方法名 参数3：实现监听 重写方法
        XposedHelpers.findAndHookMethod(
        TelephonyManager.class,        ""getDeviceId"",        new XC_MethodReplacement() {            @Override            protected Object replaceHookedMethod(MethodHookParam argMethodHookParam) throws Throwable {                return ""我才是序列号！"";
            }
        }
        );
    }
}

安装 hook 框架
de.robv.android.xposed.installer_v32_de4f0d.apk

提示要你安装 hook

点击框架

点击安装它就会要你重启
重启完后启动 hook

点击模块

重启就可以了 只要启动 hooktest 就会被 hook（hook不要启动 一般是写没有见面的我是为了调试)

Main.java 完整代码

package com.bluelesson.xposed24;import android.telephony.TelephonyManager;import de.robv.android.xposed.IXposedHookLoadPackage;import de.robv.android.xposed.XC_MethodHook;import de.robv.android.xposed.XposedBridge;import de.robv.android.xposed.XposedHelpers;import de.robv.android.xposed.callbacks.XC_LoadPackage;public class Main implements IXposedHookLoadPackage {    @Override    public void handleLoadPackage(XC_LoadPackage.LoadPackageParam argLoadPackageParam) throws Throwable {        // 判断是不是要Hook的包，不是直接返回        if(!argLoadPackageParam.packageName.equals(""com.bluelesson.testphoneinfo"")){            return;
        }//        XposedHelpers.findAndHookMethod(//                TelephonyManager.class,//                ""getDeviceId"",//                new XC_MethodReplacement() {//                    @Override//                    protected Object replaceHookedMethod(MethodHookParam argMethodHookParam) throws Throwable {//                        return ""我才是序列号！"";//                    }//                }//        );

        XposedHelpers.findAndHookMethod(
                TelephonyManager.class,                ""getDeviceId"",                new XC_MethodHook() {                    @Override                    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {                        super.beforeHookedMethod(param);

                        XposedBridge.log(""beforeHookedMethod"");
                    }                    @Override                    protected void afterHookedMethod(MethodHookParam param) throws Throwable {                        super.afterHookedMethod(param);

                        XposedBridge.log(""afterHookedMethod"");

                        param.setResult(""我是序列号"");
                    }
                }
        );

    }
}

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