Xpose 初探

github地址：https://github.com/rovo89/XposedInstaller

1：新建项目

新建工程XposeTest .修改manifest.xml

<meta-data android:name="xposedmodule" android:value="true"></meta-data>
<meta-data android:name="xposeddescription" android:value="我是个test111"></meta-data>
<meta-data android:name="xposedminversion" android:value="30"></meta-data>

2：添加依赖

compileOnly 'de.robv.android.xposed:api:82'
compileOnly 'de.robv.android.xposed:api:82:sources'

注意：这里不要使用implementation。

3：添加测试代码

public class MainActivity extends AppCompatActivity {
    private TextView tvDesc;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tvDesc=findViewById(R.id.tv_desc);
        tvDesc.setText("我是test");
    }
}

4：编写hook代码

新建HookModule类，继承IXposedHookLoadPackage，实现 handleLoadPackage方法。

测试实现效果：找到对应的按钮，替换文案。

public class HookModule implements IXposedHookLoadPackage {

    public static final String TAG = "HookModule";

    @Override
    public void handleLoadPackage(XC_LoadPackage.LoadPackageParam lpparam) throws Throwable {
        Log.e(TAG, "handleLoadPackage");
        XposedHelpers.findAndHookMethod("com.zh.xpose.MainActivity", lpparam.classLoader, "onCreate", Bundle.class, new XC_MethodHook() {
            @Override
            protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                Log.e(TAG, "handleLoadPackage beforeHookedMethod ");
            }

            @Override
            protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                Log.e(TAG, "handleLoadPackage afterHookedMethod ");
                Class<?> aClass = lpparam.classLoader.loadClass("com.zh.xpose.MainActivity");
                Field field = aClass.getDeclaredField("tvDesc");
                field.setAccessible(true);
                TextView tvDesc = (TextView) field.get(param.thisObject);
                tvDesc.setText("我是hook后的test");
            }
        });
    }
}

5：运行

安装成功后会提示Xpose未激活，点击激活Xpose，选择某个应用，强制停止后重启该应用，会发现demo中的文案已经被替换了。