我正在使用微调器来选择和刷新项目。
例如：如果我选择全部，则应显示所有项目。如果我选择“卖入”，它应该只显示卖出物品。因此，根据微调器的选择，项目应该过滤掉并需要显示。
我试图过滤掉，但它没有过滤掉。适配器没有刷新项目。
这是代码。
MainActivity：
public class Activities extends BaseActivity {
private RecyclerView recyclerView;
private Spinner spinner;
String[] countriesList = {"All", "Sell In", "Registrasi", "Re-Registrasi"};
ActivitiesListAdapter adapter;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
contentView = inflater.inflate(R.layout.activity_activities_list, null);
insertPoint.addView(contentView);
recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
spinner = (Spinner) findViewById(R.id.spinner);
adapter = new ActivitiesListAdapter(getData(), this);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this, OrientationHelper.VERTICAL, false);
recyclerView.setLayoutManager(linearLayoutManager);
recyclerView.setNestedScrollingEnabled(false);
recyclerView.setAdapter(adapter);
CustomSpinnerAdapter customAdapter=new CustomSpinnerAdapter(this,countriesList);
spinner.setAdapter(customAdapter);
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
String items = adapterView.getItemAtPosition(i).toString();
// adapter.getFilter().filter(items);
final List<RetailerActivities> filteredModelList2 = adapter.filter2(getData(), items);
//adapter.setFilter(filteredModelList2);
}
@Override
public void onNothingSelected(AdapterView<?> adapterView) {
}
});
}
//the first item to be compared in Spinner.
public static List<RetailerActivities> getData() {
List<RetailerActivities> list = new ArrayList<>();
list.add(new RetailerActivities("Sell In", "Selli Cell", "13/06/2017 09:10", R.drawable.ic_tag));
list.add(new RetailerActivities("Registrasi", "Farras Cell", "13/06/2017 09:10", R.drawable.ic_registrasi));
list.add(new RetailerActivities("Re-Registrasi", "Farras Cell", "13/06/2017 09:10", R.drawable.ic_registrasi));
list.add(new RetailerActivities("POSM & Visibility", "Farras Cell", "13/06/2017 09:10", R.drawable.ic_poms));
list.add(new RetailerActivities("Sell In", "Selli Cell", "13/06/2017 09:10", R.drawable.ic_tag));
return list;
}
适配器类
public class ActivitiesListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private List<RetailerActivities> mList;
private Context context;
private List<RetailerActivities> mFilteredList;
public ActivitiesListAdapter(List<RetailerActivities> list, Context context) {
this.mFilteredList = this.mList = list;
this.context = context;
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view;
view = LayoutInflater.from(parent.getContext()).inflate(R.layout.activities_row, parent, false);
return new RetailerActivitiesView(view);
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
RetailerActivities object = mList.get(position);
//RetailerActivities retailerFilter = mFilteredList.get(position);
((RetailerActivitiesView) holder).title.setText(object.getTitle());
((RetailerActivitiesView) holder).name.setText(object.getName());
((RetailerActivitiesView) holder).dateTime.setText(object.getDateTime());
((RetailerActivitiesView) holder).profileIcon.setImageResource(object.getDrawablesIcon());
}
@Override
public int getItemCount() {
if (mList == null)
return 0;
return mList.size();
}
@Override
public int getItemViewType(int position) {
if (mList != null) {
RetailerActivities object = mList.get(position);
if (object != null) {
//return object.getType();
}
}
return 0;
}
public static class RetailerActivitiesView extends RecyclerView.ViewHolder {
private ImageView profileIcon;
private TextView title;
private TextView name;
private TextView dateTime;
public RetailerActivitiesView(View itemView) {
super(itemView);
title = (TextView) itemView.findViewById(R.id.recycle_txt_acc_num);
name = (TextView) itemView.findViewById(R.id.recycle_txt_acc_name);
dateTime = (TextView) itemView.findViewById(R.id.timestamp);
profileIcon = (ImageView) itemView.findViewById(R.id.recycle_profile);
}
}
public List<RetailerActivities> filter2(List<RetailerActivities> models, String filterType) {
final ArrayList<RetailerActivities> filteredModelList = new ArrayList<>();
for (RetailerActivities model:models) {
final String cardTypeTest = model.getTitle(); //title is //where i need to compare from the spinner string..
if (cardTypeTest.equalsIgnoreCase(filterType)) {
filteredModelList.add(model);
}
}
return filteredModelList;
}
}
答案 0 :(得分：2)
在列表中输入新项目后，为适配器添加此代码 mListAdapter.notifyDataSetChanged（）;
List<RetailerActivities> list = new ArrayList<>();
list= getData();
recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
spinner = (Spinner) findViewById(R.id.spinner);
adapter = new ActivitiesListAdapter( list, this);// set value here.....
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this, OrientationHelper.VERTICAL, false);
recyclerView.setLayoutManager(linearLayoutManager);
recyclerView.setNestedScrollingEnabled(false);
recyclerView.setAdapter(adapter);
public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l)
{
String items = adapterView.getItemAtPosition(i).toString();
list = getFilteredData();// get data based on condition
adapter.notifyDataSetChanged();
}
答案 1 :(得分：1)
试试代码。
您为同一个微调器实现了2 **适配器和OnItemSelectedListener()。所以只有First Lister会一直工作。
<强> MainActivity：
public class Activities extends BaseActivity {
private RecyclerView recyclerView;
private Spinner spinner;
String[] countriesList = {"All", "Sell In", "Registrasi", "Re-Registrasi"};
ActivitiesListAdapter adapter;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
contentView = inflater.inflate(R.layout.activity_activities_list, null);
insertPoint.addView(contentView);
recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
spinner = (Spinner) findViewById(R.id.spinner);
adapter = new ActivitiesListAdapter(getData(), this);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this, OrientationHelper.VERTICAL, false);
recyclerView.setLayoutManager(linearLayoutManager);
recyclerView.setNestedScrollingEnabled(false);
recyclerView.setAdapter(adapter);
/* YOU HAD IMPLIMENTED 2 ADAPTERS FOR SPINNER. SO ONLY FIRST OnItemSelectedListener() WILL LISTEN ALWAYS */
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this, R.layout.acitivity_detail_profile_retailer, countriesList);
dataAdapter.setDropDownViewResource(R.layout.spinner_drop_down);
spinner.setAdapter(dataAdapter);
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
String items = adapterView.getItemAtPosition(i).toString();
// adapter.getFilter().filter(items);
final List<RetailerActivities> filteredModelList2 = adapter.filter2(getData(), items);
adapter.notifyDataSetChanged();
//adapter.setFilter(filteredModelList2);
}
@Override
public void onNothingSelected(AdapterView<?> adapterView) {
}
});
}
//the first item to be compared in Spinner.
public static List<RetailerActivities> getData() {
List<RetailerActivities> list = new ArrayList<>();
list.add(new RetailerActivities("Sell In", "Selli Cell", "13/06/2017 09:10", R.drawable.ic_tag));
list.add(new RetailerActivities("Registrasi", "Farras Cell", "13/06/2017 09:10", R.drawable.ic_registrasi));
list.add(new RetailerActivities("Re-Registrasi", "Farras Cell", "13/06/2017 09:10", R.drawable.ic_registrasi));
list.add(new RetailerActivities("POSM & Visibility", "Farras Cell", "13/06/2017 09:10", R.drawable.ic_poms));
list.add(new RetailerActivities("Sell In", "Selli Cell", "13/06/2017 09:10", R.drawable.ic_tag));
return list;
}
答案 2 :(得分：0)
这不是您问题的确切代码，我已经发布了自己的解决方案......请查看逻辑
public class RecyclerViewAdapter extends RecyclerView.Adapter<ViewHolder> {
View view1;
ViewHolder viewHolder1;
Activity act;
List<UserTask> userTask;
private int mSelectedPosition;
private View mSelectedView;
public RecyclerViewAdapter(Activity act, List<UserTask> userTask) {
this.userTask = userTask;
this.act = act;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
view1 = LayoutInflater.from(HomeScreen.this).inflate(R.layout.recyclerview_items, parent, false);
viewHolder1 = new ViewHolder(view1);
return viewHolder1;
}
@Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
holder.textView.setText(userTask.get(position).getTaskName());
holder.tvSpinnerText.setText(userTask.get(position).getChangedInstanceCount());
holder.llSpinner.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
setAlertDialog(userTask.get(position).getInstancesArray(), holder, position);
// recyclerView.smoothScrollToPosition(position);
}
});
}
@Override
public int getItemCount() {
return userTask.size();
}
}
点击微调器时触发的方法..
private void setAlertDialog(Integer[] values, final ViewHolder view, final int position) {
AlertDialog.Builder builder = new AlertDialog.Builder(HomeScreen.this);
final String[] instances = Arrays.toString(values).split("[\\[\\]]")[1].split(", ");
builder.setItems(instances, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
view.tvSpinnerText.setText(instances[which]);
userTask.get(position).setChangedInstanceCount(instances[which]);
// dialog.dismiss();
reset(position);
}
});
builder.show();
}
答案 3 :(得分：0)
你需要像这样放置adapter.notifyDataSetChanged（）方法：
@Override
public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
String items = adapterView.getItemAtPosition(i).toString();
// adapter.getFilter().filter(items);
final List<RetailerActivities> filteredModelList2 = adapter.filter2(getData(), items);
//adapter.setFilter(filteredModelList2);
adapter.notifyDataSetChanged();//Put this line.
}