安卓项目compileSdk为32，在使用startActivityForResult()方法时发现Android studio提示此方法已经废弃了。

目前的代替方案案例。

// 确保 app 的 build.gradle中已经引入了androidx.appcompat:appcompat
dependencies {implementation 'androidx.appcompat:appcompat:1.4.1' // 确定}

从A跳到B，A页面逻辑

package com.example.test1;import androidx.activity.result.ActivityResult;
import androidx.activity.result.ActivityResultCallback;
import androidx.activity.result.ActivityResultLauncher;
import androidx.activity.result.contract.ActivityResultContracts;
import androidx.appcompat.app.AppCompatActivity;import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;import com.example.test1.ui.login.LoginActivity; // B页面例子
import com.google.android.material.snackbar.Snackbar;public class MainActivity extends AppCompatActivity implements View.OnClickListener {private static String TAG = "MainActivity";private ActivityResultLauncher register;@SuppressLint("ResourceAsColor")@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findViewById(R.id.my_button).setOnClickListener(this);register = registerForActivityResult(new ActivityResultContracts.StartActivityForResult(), new ActivityResultCallback() {@Overridepublic void onActivityResult(ActivityResult result) {Log.i(TAG, "onActivityResult: _____" + result);if (result != null) {Intent intent = result.getData();if (intent != null && result.getResultCode() == Activity.RESULT_OK) {Bundle myBundle = intent.getExtras();String my_name = myBundle.getString("my_name");String my_sex = myBundle.getString("my_sex");// 下一个Activity回退后 在此获取返回的值Log.i(TAG, "onCreate: 获取返回传值my_name__________" + my_name); // ___获取返回传值my_namezhangsan000Log.i(TAG, "onCreate: 获取返回传值my_sex__________" + my_sex); // ___获取返回传值my_sex男}}}});}@Overridepublic void onClick(View view) {if (view.getId() == R.id.my_button) {Intent intent = new Intent(this, LoginActivity.class);// 用register.launch跳转至Bregister.launch(intent);}}
}

从A跳到B，B页面回退逻辑

// B页面的后退逻辑public void myBack(View view) {Intent intent = new Intent();Bundle bundle = new Bundle();bundle.putString("my_name", "zhangsan000");bundle.putString("my_sex", "男");intent.putExtras(bundle);// 携带意图返回上一个页面 RESULT_OK代表处理成功了setResult(Activity.RESULT_OK, intent);// 结束当前页面finish();
};