我尝试使用bundle将字符串值从Activity传递到fragment，但getArguments（）返回空值，因此它无法为我工作。（应用从MainActivity2开始）
片段代码：

public class ProfileFragment extends Fragment {

TextView results;
    public ProfileFragment() {
        // Required empty public constructor
    }

    @Override
    public void onSaveInstanceState(@NonNull Bundle outState) {
        super.onSaveInstanceState(outState);

    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
       setRetainInstance(true);

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {        
        String strtext = getArguments().getString("edttext");
       
        return inflater.inflate(R.layout.fragment_profile, container, false);

    }
}

主要活动2代码：

public class MainActivity2 extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
    }
    
    public void Clicked(View view) {
        Bundle bundle = new Bundle();
        bundle.putString("edttext", "From Activity");

// set Fragmentclass Arguments
ProfileFragment profileFragment = new ProfileFragment();
profileFragment.setArguments(bundle);
Intent intent=new Intent(this,MainActivity.class);
startActivity(intent);
}
}

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