startActivityForResult()方法废弃
安卓项目compileSdk为32，在使用startActivityForResult()方法时发现A
startActivityForResult()方法废弃
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<Intent> register;
@SuppressLint("ResourceAsColor")
@Override
protected 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<ActivityResult>() {
@Override
public 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_namezhangsan000
Log.i(TAG, "onCreate: 获取返回传值my_sex__________" + my_sex); // ___获取返回传值my_sex男
}
}
}
});
}
@Override
public void onClick(View view) {
if (view.getId() == R.id.my_button) {
Intent intent = new Intent(this, LoginActivity.class);
// 用register.launch跳转至B
register.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();
};以上就是Android startActivityForResult()代替方案示例的详细内容，更多关于Android startActivityForResult()的资料请关注好代码网其它相关文章！
