Question

我目前正在开展一个项目，要求我在标签/片段之间移动我的数据。让我们说用户点击listView项目，他们将移动到另一个标签，而不是保持相同标签。我可以知道如何实现这一目标吗？有人可以帮忙解决我的疑问吗？谢谢！

Answer 1

您可以通过set和get Arguments在选项卡之间传输数据，这是示例

FragmentTwo fragmentTwo = new FragmentTwo();

Bundle bundle = new Bundle();
bundle.putString("key1", "data1");
bundle.putString("key2", "data2");
bundle.putString("key3", "data3");
fragmentTwo.setArguments(bundle);

FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.main_container, fragmentTwo);
fragmentTransaction.commit();

Answer 2

有三种方法可以做到这一点

1）使用接口 -use接口传递数据对象。网状解决方案

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public interface onDataCHange{ 
    public void updateData(String data);
}

2）使用活动类 - 将模型对象存储在活动类中，并设置并获取活动实例。快速而肮脏的解决方案

<强> Read more

  //Get
  Object dataModel =  (ContainerActivity) getActivity()).getData();

   //Set
   ((ContainerActivity) getActivity()).setData(dataModel );

3）清洁架构 - 中心存储库保存模型对象。通过Singleton Center存储库对象查看更新模型。整个App之间的单个数据流副本。

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@Singleton 
public class UserDataRepository implements UserRepository { 

  private final UserDataStoreFactory userDataStoreFactory;
  private final UserEntityDataMapper userEntityDataMapper;

  /** 
   * Constructs a {@link UserRepository}. 
   * 
   * @param dataStoreFactory A factory to construct different data source implementations. 
   * @param userEntityDataMapper {@link UserEntityDataMapper}. 
   */ 
  @Inject 
  UserDataRepository(UserDataStoreFactory dataStoreFactory,
      UserEntityDataMapper userEntityDataMapper) {
    this.userDataStoreFactory = dataStoreFactory;
    this.userEntityDataMapper = userEntityDataMapper;
  } 

  @Override public Observable<List<User>> users() {
    //we always get all users from the cloud 
    final UserDataStore userDataStore = this.userDataStoreFactory.createCloudDataStore();
    return userDataStore.userEntityList().map(this.userEntityDataMapper::transform);
  } 

  @Override public Observable<User> user(int userId) {
    final UserDataStore userDataStore = this.userDataStoreFactory.create(userId);
    return userDataStore.userEntityDetails(userId).map(this.userEntityDataMapper::transform);
  } 
}

Android Studio - 在标签/片段内移动的数据

2 个答案: