无法在新的活动中传递对象数组

Question

我在一个基于用户输入的片段“最近”中显示了一个列表视图。现在，我想将该列表视图作为对象数组传递给容器活动（主活动）（我使用接口传递数据），然后当用户单击MainActivity中的按钮时，该数组列表将传递给另一个活动显示为ListView。当我运行应用程序时，它显示错误“应用程序已停止”。在logcat中也没有显示错误。请帮助。

1. My relevant code of interface in Fragment: 


     @Override 
      public View onCreateView(LayoutInflater inflater, ViewGroup container, 
            Bundle savedInstanceState) { 

       View view=inflater.inflate(R.layout.fragment_one, container, false);    mListView=(ListView)view.findViewById(R.id.myListView); 

       placeList.add(new Place("Shoppers Stop (1st Floor)", "Get 10% Off on Clothes & Jewellery", "shop1")); 
            placeList.add(new Place("Dominos (2nd Floor)", "Get 10% Off on Chef Special Pizzas", "shop2")); 
            placeList.add(new Place("More MegaStore (3rd Floor)", "Wednesday Bazaar, Get min 10% Off","shop4")); 
          mPlaces=placeList.toArray(new Place[placeList.size()]);//Convert arraylist to array 
          passData(mPlaces);//Pass Array of objects for interface 


      mPlaceAdapter = new PlaceAdapter(getActivity(), R.layout.row, mPlaces); 

          if (mListView != null) { 
           mListView.setAdapter(mPlaceAdapter);\\Creating listview in fragment 
          } 

     // Inflate the layout for this fragment 
       return view; 
      } 


    //Inetrface definition 
     public interface OnDataPass { 
       public void onDataPass(Place[] data); 
      } 

      OnDataPass dataPasser; 

      @Override 
      public void onAttach(Context context) { 
       super.onAttach(context); 
       dataPasser = (OnDataPass) context; 
      } 

      @Override 
      public void onDetach() { 
       super.onDetach(); 
       dataPasser=null; 
      } 

      public void passData(Place[] data) { 
       dataPasser.onDataPass(data); 
      } 
     } 

     2. Main Activity (Container of fragement): 
     @Override 
     public void onDataPass(Place []data) { 

      Collections.addAll(allOffers,data); 

     } 


      @Override 
      public boolean onOptionsItemSelected(MenuItem item) { 

       switch(item.getItemId()){ 
          case R.id.all: 
         Intent intent = new Intent(MainActivity.this, AllOffersActivity.class); 
         intent.putExtra("AllOffers", (ArrayList<Place>)allOffers); 
         getApplication().startActivity(intent); 
         return true; 
          default: return super.onOptionsItemSelected(item); 

       } 

      } 

    3. AllOffersActivity Class (where again I want to show listviews): 


         @Override 
         protected void onCreate(Bundle savedInstanceState) { 
          super.onCreate(savedInstanceState); 
          setContentView(R.layout.activity_alloffers); 
          onePlaces=(ArrayList<Place>)getIntent().getSerializableExtra("AllOffers"); 
          if(onePlaces!=null) { 
           mPlaces = onePlaces.toArray(new Place[onePlaces.size()]);//To store data into an array 

          } 

          allPlaceAdapter = new PlaceAdapter(AllOffersActivity.this, R.layout.row, mPlaces); 
          allListView=(ListView)findViewById(R.id.allListView); 

          if (allListView != null) { 
           allListView.setAdapter(allPlaceAdapter); 
          } 

         } 
        } 

    4. AndroidManifest.xml: 

     <activity android:name=".activity.MainActivity"> 
        <intent-filter> 
         <action android:name="android.intent.action.MAIN"/> 

         <category android:name="android.intent.category.LAUNCHER"/> 
        </intent-filter> 
     </activity> 

       <activity android:name=".activity.AllOffersActivity"/> 

图像-i）的图像，以显示在片段列表视图，并且当用户点击在底部“明星”图标，新的活动应该显示列表视图这是越来越在片段

所示

Answer 1

按照以下步骤来传递用户定义的对象的阵列。

步骤1：public class Place implements Serializable

步骤2：修改您的活动你在哪里将数据传递到其他类

Intent data = new Intent(MainActivity.this, AllOffersActivity.class); 
data.putExtras("AllOffers", (Serializable) allOffers); 
startActivity(data); 

步骤3以下：在接收

类

if(getIntent() != null) { 
getIntent().getSerializableExtra("AllOffers"); 
} 

试试这个。

Answer 2

可以使用捆绑从一个片段传递数组对象其他活动

捆绑捆=新软件包（）;

bundle.putStringArray（mMyList，“my_list_key”）;

fragment.setArguments（bundle）;

或check this