Tutorial.java

package com.mpeter.asd;

import android.widget.TextView;

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;

/**
 * Created by masap on 2018. 03. 19..
 */

public class Tutorial implements IXposedHookLoadPackage {
    @Override
    public void handleLoadPackage(XC_LoadPackage.LoadPackageParam lpparam) throws Throwable {
//        XposedBridge.log("Xposed első projektem: Package is loading: " + lpparam.packageName);

        if (!lpparam.packageName.equals("com.john.xmessengerprivacypremium")
                || !lpparam.packageName.equals("com.mpeter.asd"))
            return;

        XposedBridge.log("Hooking package " + lpparam.packageName);

        switch (lpparam.packageName){
            case "com.john.xmessengerprivacypremium":
                XposedBridge.log("xMessenger xDebug: We are in xMessenger!");

                XposedHelpers.findAndHookMethod("com.john.xmessengerprivacypremium.MainActivity", lpparam.classLoader, "onCreate", new XC_MethodHook() {
                    @Override
                    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                        XposedBridge.log("xMessenger xDebug: onCreate called");
                        super.beforeHookedMethod(param);
                    }
                });

                XposedHelpers.findAndHookMethod("com.john.xmessengerprivacypremium.PrefsIntenceService", lpparam.classLoader, "a", new XC_MethodHook() {
                    @Override
                    protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                        StringBuilder log = new StringBuilder("xMessenger xDebug: PrefsIntentService\n");
                        log.append("thisObject is: ").append(param.thisObject.toString());
                        log.append("arguments: \n");
                        for (int i = 0; i < param.args.length; i++) {
                            log.append(param.args[i].toString()).append("\n");
                        }

                        log.append("result: ").append(param.getResultOrThrowable().toString());
                        log.append("method name: ").append(param.method.getName());
                        log.append("method class: ").append(param.method.getDeclaringClass());
                        log.append("method isSynthetic: ").append(param.method.isSynthetic());

                        XposedBridge.log(log.toString());
                        super.afterHookedMethod(param);
                    }
                });
                break;

            case "com.mpeter.asd":
                XposedHelpers.findAndHookMethod(MainActivity.class, "onResume", new XC_MethodHook() {
                    @Override
                    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                        XposedBridge.log("xMessenger xDebug: MainActivity of self is resumed");
                        super.afterHookedMethod(param);
                    }
                });

                XposedHelpers.findAndHookMethod(MainActivity.class, "onCreate", new XC_MethodHook() {
                    @Override
                    protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                        TextView textView = (TextView) XposedHelpers.getObjectField(TextView.class, "moduleCheckTV");
                        textView.setText("Module enabled");

                        super.afterHookedMethod(param);
                    }
                });
                break;
        }
    }
}