Question

我有两个活动，每个活动都有一个片段。我在第一个fragmrnt和第二个活动之间发送了数据（简单字符串），但我无法将其从活动发送到第二个片段。我做错了什么？

这是获取数据的活动：

public class DiaryActivity extends AppCompatActivity {

private FragmentManager manager = getSupportFragmentManager();

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_diary);
    if(savedInstanceState == null){
        manager.beginTransaction().add(new EditDiaryFragment(), "tag").commit();
    }


}

@Override
protected void onResume() {
    super.onResume();
// get the data and pass it to the fradment... not working :(
    Intent intent = getIntent();
    String date = intent.getStringExtra("date");
    String diary = intent.getStringExtra("diary");

    Bundle bundle = new Bundle();
    bundle.putString("date", date);
    bundle.putString("diary", diary);

    EditDiaryFragment editDiaryFragment = new EditDiaryFragment();
    editDiaryFragment.setArguments(bundle);
}


}

这是需要获取数据的片段：

public class EditDiaryFragment extends Fragment implements View.OnClickListener {

private EditText diaryEditText;
private Button diarySaveButton;
private TextView diaryDateText;
private String today;
private ShvizoutDBHelper helper;
private StringBuffer buffer;


public EditDiaryFragment() {
    // Required empty public constructor
}

@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    helper = new ShvizoutDBHelper(getContext());


}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View v =  inflater.inflate(R.layout.fragment_edit_diary, container, false);
    diaryDateText = (TextView) v.findViewById(R.id.diaryDateText);
    diarySaveButton = (Button) v.findViewById(R.id.diarySaveButton);
    diaryEditText = (EditText) v.findViewById(R.id.diaryEditText);

    diarySaveButton.setOnClickListener(this);

    Bundle bundle = getArguments();
    if(bundle != null){
        String bDate = bundle.getString("date");
        String bDiary = bundle.getString("diary");

        diaryDateText.setText(bDate);
        diaryEditText.setText(bDiary);
    }

    return v;
}


}

感谢!!

Answer 1

添加捆绑包后，您需要在活动中添加相同的EditDiaryFragment实例：

EditDiaryFragment editDiaryFragment = new EditDiaryFragment();
editDiaryFragment.setArguments(bundle);
getSupportFragmentManager.beginTransaction().add(editDiaryFragment, "tag").commit();

在两个片段之间发送数据

1 个答案: