Android RecyclerView适配器随机调用
问题描述：
这是我的情况：我有一个ListView（我将它传递到RecyclerView asap）由ArrayAdapter填充，这工作完美无瑕。每个item_main都有一个Grid，其中包含0x0 ImageView，0x1 TextView，1x0/1片段，setVisibility Gone，通过“标准”OnClickListener切换为可见。 其中的一个项目有一个动态的片段，我叫他的班级听众，也许有错误。 问题是Fragment包含一个RecyclerView视图，该视图具有包含TableRRow和5个TextView的各种item_hours。实际上我正在填充一个市场的小时表; Fragment类在item_main的每次触摸时被调用“正确”，但他的onBindViewHolder方法被随机调用了10次（在我的观点上）。Android RecyclerView适配器随机调用
我做了更好的草案： 的ListView：4X item_main // item_main =>格=>图像，文本片段// 该片段=> Recyclerview =>的TableRow =>文本，文本，文本，文本，文本// RecyclerView适配器呼叫者随机
这里的代码和经度：
OnClickListener（ItemAdapterMain.class的方法）
case hours:
HoursFragment hoursFragment = new HoursFragment();
FragmentManager fragmentManager = ((Activity) context).getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.fragment_hours, hoursFragment);
fragmentTransaction.commit();
setVisible(2);
s = "hours"; // for Log only
break;
HoursFragment.class
public class HoursFragment extends android.app.Fragment {
private static final String TAG = "com.forface.luxurymom";
private Context context;
private final String _10_30 = "10:30";
private final String _13 = "13:00";
private final String _15_30 = "15:30";
private final String _16 = "16:00";
private final String _20 = "20:00";
List dayList;
private Day mon, tue, wen, thu, fri, sat, sun;
public HoursFragment() {
// Required empty public constructor
}
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
context = container.getContext();
View view = inflater.inflate(R.layout.fragment_hours, container, false);
mon = new Day("mon",_15_30,_20);
tue = new Day("tue",_10_30,_13, _15_30,_20);
wen = new Day("wen",_10_30,_13, _15_30,_20);
thu = new Day("thu",_10_30,_13, _15_30,_20);
fri = new Day("fri",_10_30,_13, _15_30,_20);
sat = new Day("sat",_10_30,_13, _15_30,_20);
sun = new Day("sun",_16,_20);
dayList = new LinkedList();
dayList.add(mon);
dayList.add(tue);
dayList.add(wen);
dayList.add(thu);
dayList.add(fri);
dayList.add(sat);
dayList.add(sun);
Log.i(TAG, "Call ItemAdapterHours"); /////////////////////////////////////////////////////// LOG CALL ADAPTER
RecyclerView hoursRecyclerView = (RecyclerView) view.findViewById(R.id.hours_recycler_view);
ItemAdapterHours adapter = new ItemAdapterHours(getActivity(), dayList);
hoursRecyclerView.setAdapter(adapter);
LinearLayoutManager llm = new LinearLayoutManager(getActivity());
llm.setOrientation(LinearLayoutManager.HORIZONTAL);
hoursRecyclerView.setLayoutManager(llm);
return view;
}
}
ItemAdapterHours.class
public class ItemAdapterHours extends RecyclerView.Adapter<ItemAdapterHours.MyViewHolder>{
private static final String TAG = "com.forface.luxurymom";
private final int call = R.id.main_call;
private final int write = R.id.main_write;
private final int hours = R.id.main_hours;
private final int map = R.id.main_map;
private List<Day> dayList;
Context context;
public class MyViewHolder extends RecyclerView.ViewHolder {
public TextView itemDay;
public TextView itemOpen;
public TextView itemPauseStart;
public TextView itemPauseEnd;
public TextView itemClose;
public MyViewHolder(View view) {
super(view);
itemDay = (TextView)view.findViewById(R.id.hours_item_day);
itemOpen = (TextView)view.findViewById(R.id.hours_item_open);
itemPauseStart = (TextView)view.findViewById(R.id.hours_item_pause_start);
itemPauseEnd = (TextView)view.findViewById(R.id.hours_item_Pause_end);
itemClose = (TextView)view.findViewById(R.id.hours_item_cose);
}
}
public ItemAdapterHours (Context context, List<Day> mDayList){
Log.i(TAG, "ItemAdapterHours call received"); ////////////////////////////////////////////// LOG CALL RECEIVED
this.context = context;
Activity activity = (Activity) context;
dayList = mDayList;
}
public void onBindViewHolder(MyViewHolder holder, int position) {
Log.i(TAG, "ItemAdapterHours started"); //////////////////////////////////////////////////// LOG STARTED
Day item = dayList.get(position);
holder.itemDay.setText(item.getName());
if (item.openTime() != null)
holder.itemOpen.setText(item.openTime().toString());
if (item.pauseStartTime() != null)
holder.itemPauseStart.setText(item.pauseStartTime().toString());
holder.itemPauseEnd.setText(item.pauseEndTime().toString());
holder.itemClose.setText(item.closeTime().toString());
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int position) {
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.item_hours,parent, false);
return new MyViewHolder(v);
}
@Override
public int getItemCount() {
return dayList.size();
}
}
LOG
11-07 15:43:27.466 : ItemAdapterHours call received
11-07 15:43:27.947 : Call ItemAdapterHours
11-07 15:43:27.947 : ItemAdapterHours call received
11-07 15:43:28.355 : Call ItemAdapterHours
11-07 15:43:28.355 : ItemAdapterHours call received
11-07 15:43:28.791 : Call ItemAdapterHours
11-07 15:43:28.791 : ItemAdapterHours call received
11-07 15:43:29.197 : Call ItemAdapterHours
11-07 15:43:29.197 : ItemAdapterHours call received
11-07 15:43:29.647 : Call ItemAdapterHours
11-07 15:43:29.647 : ItemAdapterHours call received
11-07 15:43:30.044 : Call ItemAdapterHours
11-07 15:43:30.044 : ItemAdapterHours call received
11-07 15:43:30.045 : Call ItemAdapterHours
11-07 15:43:30.045 : ItemAdapterHours call received
11-07 15:43:30.446 : Call ItemAdapterHours
11-07 15:43:30.446 : ItemAdapterHours call received
{......}
11-07 15:43:36.240 : Call ItemAdapterHours
11-07 15:43:36.240 : ItemAdapterHours call received
11-07 15:43:37.088 : Call ItemAdapterHours
11-07 15:43:37.088 : ItemAdapterHours call received
11-07 15:43:37.088 : Call ItemAdapterHours
11-07 15:43:37.088 : ItemAdapterHours call received
11-07 15:43:37.238 : ItemAdapterHours started
11-07 15:43:37.239 : ItemAdapterHours started
11-07 15:43:37.648 : Call ItemAdapterHours
11-07 15:43:37.648 : ItemAdapterHours call received
11-07 15:43:37.648 : Call ItemAdapterHours
11-07 15:43:37.648 : ItemAdapterHours call received
11-07 15:43:37.792 : ItemAdapterHours started
11-07 15:43:37.793 : ItemAdapterHours started
11-07 15:43:38.215 : Call ItemAdapterHours
11-07 15:43:38.215 : ItemAdapterHours call received
11-07 15:43:38.216 : Call ItemAdapterHours
11-07 15:43:38.216 : ItemAdapterHours call received
11-07 15:43:38.344 : ItemAdapterHours started
11-07 15:43:38.346 : ItemAdapterHours started
答
恰恰解决了这个chaning：
switch (v.getId()){
case call:
setVisible(0);
s = "call";
break;
case write:
setVisible(1);
s = "write";
break;
case hours:
setVisible(2);
HoursFragment hoursFragment = new HoursFragment();
FragmentManager fragmentManager = ((Activity) context).getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.fragment_hours, hoursFragment);
fragmentTransaction.commit();
s = "hours";
break;
case map:
setVisible(3);
s = "map";
break;
}
notifyDataSetChanged();
}
到这一点：
switch (v.getId()){
case call:
notifyDataSetChanged();
setVisible(0);
s = "call";
break;
case write:
notifyDataSetChanged();
setVisible(1);
s = "write";
break;
case hours:
setVisible(2);
notifyDataSetChanged();
HoursFragment hoursFragment = new HoursFragment();
FragmentManager fragmentManager = ((Activity) context).getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.fragment_hours, hoursFragment);
fragmentTransaction.commit();
s = "hours";
break;
case map:
notifyDataSetChanged();
setVisible(3);
s = "map";
break;
}
}
这是RecyclerView的自然的工作。在滚动时，OnbindViewHolder方法会多次调用，只有在滚动显示视图销毁和新视图后创建的屏幕中才会显示可见项。 –
我刚刚通过把notifyDataSetChanged（）解决;在片段初始化之前:) – 4face