使用搜索视图的特定标题(从 api 获取)? [英] particular title(fetched from api) using searchview?

问题描述

我想要这样的东西:

所以事情是，我真正想要的是当用户在搜索视图中输入特定主题名称(如果存在于应用程序中)时，它应该能够提供建议，如果找到它应该打开该主题活动(就像 Facebook，Instagram，...等搜索..这些标题来自API(我已成功显示在其他活动中)​​..像这样:

so the thing is, what I exactly want is when user type particular topic name(if present in-app) in searchview it should able give suggestions and if found it should open that topic activity (just like Facebook, Instagram,...etc searches)..and those title are coming from API(which I have successfully displayed in other activities)..like this:

..它的逻辑是什么???需要帮助...谢谢

..what will the logic for it??? need help... Thanks

所以我刚刚像这样在 XML 中包含了 searchview-->

so I have just included searchview in XML like this-->

  <SearchView
    android:id="@+id/searchView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:queryHint="Search Here"
    android:iconifiedByDefault="false"
    android:layout_alignParentTop="true"
    android:background="@drawable/search_bar"
    android:layout_marginLeft="15dp"
    android:layout_marginRight="15dp"
    android:layout_marginTop="20dp"
    android:pointerIcon="crosshair"
    android:theme="@style/Widget.AppCompat.SearchView"
    android:focusedByDefault="true"
    />

需要帮助...提前致谢....

这是我的 json:

[{"id":"11","title":"TextView"},{"id":"10","title":"Edit Text"},{"id":"9","title":"ImageView"},{"id":"8","title":"Button "},{"id":"7","title":"CheckBox"},{"id":"6","title":"RadioButton & RadioGroup"},{"id":"5","title":"DatePicker"},{"id":"4","title":"TimePicker"},{"id":"3","title":"Switch"},{"id":"1","title":"Simple & Custom Toast"}]

这是我的活动:为了

public class StartLearning extends AppCompatActivity {
private RecyclerView recyclerView;
private SLAdapter slAdapter;
ProgressDialog progressDialog;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.startlearning_layout);
    progressDialog = new ProgressDialog(StartLearning.this);
    progressDialog.setMessage("Loading....");
    progressDialog.show();
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    if (getSupportActionBar() != null) {
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setDisplayShowHomeEnabled(true);
        /*Create handle for the RetrofitInstance interface*/
        SLApiSevice service = SLApiClient.getRetrofitInstance().create(SLApiSevice.class);
        Call<List<SlModel>> call = service.getMySlmodel();

        call.enqueue(new Callback<List<SlModel>>() {
            @Override
            public void onResponse(Call<List<SlModel>> call, Response<List<SlModel>> response) {
                progressDialog.dismiss();
                generateDataList(response.body());
                Log.e("hello", String.valueOf(response.body()));
            }

            @Override
            public void onFailure(Call<List<SlModel>> call, Throwable t) {
                progressDialog.dismiss();
                Toast.makeText(getApplicationContext(), "Something went wrong...Please try later!", Toast.LENGTH_SHORT).show();
            }
        });
    }
}
private void generateDataList(List<SlModel> employeeList) {
    recyclerView = findViewById(R.id.SLrecycle);
    LinearLayoutManager manager = new LinearLayoutManager(getApplicationContext());
    recyclerView.setLayoutManager(manager);
    recyclerView.setHasFixedSize(true);
    slAdapter = new SLAdapter(getApplicationContext(),employeeList);
    recyclerView.setAdapter(slAdapter);
}

适配器:

public class SLAdapter extends RecyclerView.Adapter<SLAdapter.CustomViewHolder> {

List<StartLearning.SlModel> Slmdel;
Context context;

public SLAdapter(Context context,List<StartLearning.SlModel> employees) {
    this.Slmdel = employees;
    this.context=context;
}

@Override
public CustomViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View itemView = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.startlearning_item, parent, false);

    return new CustomViewHolder(itemView);
}

@Override
public void onBindViewHolder(CustomViewHolder holder, int position) {
    // TipsModel employee = employees.get(position);
    //// holder.employeeName.setText(employees.get(position).getTips());
    holder.textView.setText(String.valueOf(position+1)+". ");
    holder.employeeName.setText(Slmdel.get(position).getTitle());
}

@Override
public int getItemCount() {
    return Slmdel.size();
    //return (employees == null) ? 0 : employees.size();

}

public class CustomViewHolder extends RecyclerView.ViewHolder {
    public TextView employeeName;
    TextView textView;

    public CustomViewHolder(View view) {
        super(view);
        employeeName = (TextView) view.findViewById(R.id.Sl2);
        textView=view.findViewById(R.id.Sl1);
        view.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent =  new Intent(context, NextSLactivity.class);
                intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                intent.putExtra("title", Slmdel.get(getAdapterPosition()).getTitle());
               intent.putExtra("idSLnext", Slmdel.get(getAdapterPosition()).getId());
                //Log.e("ashwini",WAmdel.get(getAdapterPosition()).getId());
                context.startActivity(intent);

            }
        });
    }
}

点击项目(例如:textview)

onclick of item(example :textview)

活动:其中一项(例如:textview)

activity:one of the items(example :textview)

public class JavaFragment extends Fragment {

private RecyclerView recyclerView;
private NextSLJavaAdapter adapter;
private NextSLModel DescriptList;
ProgressDialog progressDialog;
public JavaFragment() {
    // Required empty public constructor
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    return inflater.inflate(R.layout.nextsl_layout, container, false);
}

@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    Toolbar toolbar = (Toolbar) getView().findViewById(R.id. toolbar );
   // setSupportActionBar( toolbar );
    //if (getSupportActionBar() != null) {
      //  getSupportActionBar().setDisplayHomeAsUpEnabled(true);
       // getSupportActionBar().setDisplayShowHomeEnabled(true);
    //}
    progressDialog = new ProgressDialog(getContext());
    progressDialog.setMessage("Loading....");
    progressDialog.show();
    Intent intent = getActivity().getIntent();
    String title = intent.getStringExtra("title");
    //getSupportActionBar().setTitle(title);
    String id = intent.getStringExtra("idSLnext");
    Log.e("ashwini", String.valueOf(id));

    /*Create handle for the RetrofitInstance interface*/
    SLApiSevice service = SLApiClient.getRetrofitInstance().create(SLApiSevice.class);
    Call<NextSLModel> call = service.getnextslmodel(id);
    call.enqueue(new Callback<NextSLModel>() {
        @Override
        public void onResponse(Call<NextSLModel> call, Response<NextSLModel> response) {
            progressDialog.dismiss();
            DescriptList=response.body();
            generateDataList(DescriptList);

        }

        @Override
        public void onFailure(Call<NextSLModel> call, Throwable t) {
             progressDialog.dismiss();

            Toast.makeText(getContext(), "Something went wrong...Please try later!", Toast.LENGTH_SHORT).show();
        }
    });

}
private void generateDataList(NextSLModel photoList) {
    recyclerView = getView().findViewById(R.id.nextSLrecycle);
    LinearLayoutManager manager = new LinearLayoutManager(getContext());
    recyclerView.setLayoutManager(manager);
    recyclerView.setHasFixedSize(true);
    adapter = new NextSLJavaAdapter(getContext(),photoList);
    recyclerView.setAdapter(adapter);
}
}

适配器:

public class NextSLJavaAdapter extends RecyclerView.Adapter<NextSLJavaAdapter.CustomViewHolder> {

NextSLModel Slmdel;
Context context;

public NextSLJavaAdapter(Context context, NextSLModel employees) {
    this.Slmdel = employees;
    this.context = context;
}

@Override
public CustomViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View itemView = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.nextsl_item, parent, false);

    return new CustomViewHolder(itemView);
}

@Override
public void onBindViewHolder(CustomViewHolder holder, int position) {
    // TipsModel employee = employees.get(position);
    //// holder.employeeName.setText(employees.get(position).getTips());
 /////////   holder.textView.setText(String.valueOf(position + 1) + ". ");
    holder.employeeName.setText(Slmdel.getJava());
    Log.e("sl",Slmdel.getJava());
}

@Override
public int getItemCount() {
    return 1;
    //return (employees == null) ? 0 : employees.size();

}

public class CustomViewHolder extends RecyclerView.ViewHolder {
    public TextView employeeName;
    TextView textView;

    public CustomViewHolder(View view) {
        super(view);
        employeeName = (TextView) view.findViewById(R.id.detailsStartLearning);
        textView = view.findViewById(R.id.Sl1);}}}

看看这个搜索活动:

public class Search extends AppCompatActivity {
SearchView searchView;
RecyclerView recyclerView;
SearchAdapter slAdapter;
List<StartLearning.SlModel> movieList;
ChipGroup chipGroup;

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.search);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    searchView=findViewById(R.id.searchView);

    searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
        @Override
        public boolean onQueryTextSubmit(String query) {
            return false;
        }

        @Override
        public boolean onQueryTextChange(String newText) {
            searchForResults(newText);
            return false;
        }
    });
    //new code
    chipGroup = findViewById(R.id. chipGroup);

    searchView.onActionViewExpanded();
    searchView.setIconified(true);
}
public void searchForResults(String search){
    //here make an api call to get the results, complete the code here
    SLApiSevice service = SLApiClient.getRetrofitInstance().create(SLApiSevice.class);
    retrofit2.Call<List<StartLearning.SlModel>> call = service.getMySlmodel();

    call.enqueue(new Callback<List<StartLearning.SlModel>>() {
        @Override
        public void onResponse(retrofit2.Call<List<StartLearning.SlModel>> call, Response<List<StartLearning.SlModel>> response) {

            List<StartLearning.SlModel> list = response.body();
            generateDataList(list);
            addChips(list);
            Log.d("TAG","Response = "+movieList);
            slAdapter.setMovieList(getApplicationContext(),movieList);
        }

        @Override
        public void onFailure(retrofit2.Call<List<StartLearning.SlModel>> call, Throwable t) {
            Log.d("TAG","Response = "+t.toString());
        }
    });
}

private void generateDataList(List<StartLearning.SlModel> employeeList) {
    recyclerView = findViewById(R.id.recyclerview);
    LinearLayoutManager manager = new LinearLayoutManager(getApplicationContext());
    recyclerView.setLayoutManager(manager);
    recyclerView.setHasFixedSize(true);
    slAdapter = new SearchAdapter(getApplicationContext(),employeeList);
    recyclerView.setAdapter(slAdapter);
}
public void addChips(List<StartLearning.SlModel> searchItems){
    for (StartLearning.SlModel item : searchItems) {
        Chip mChip = (Chip) this.getLayoutInflater().inflate(R.layout.item_chips, null, false);
        mChip.setText(item.getTitle());
        int paddingDp = (int) TypedValue.applyDimension(
                TypedValue.COMPLEX_UNIT_DIP, 10,
                getResources().getDisplayMetrics()
        );
        mChip.setPadding(paddingDp, 0, paddingDp, 0);
        mChip.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                // Handle the click here
            }
        });
        chipGroup.removeAllViews();
        chipGroup.addView(mChip);
    }
}

@Override
public void onBackPressed() {
    super.onBackPressed();
}
}

搜索的xml:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.appcompat.widget.Toolbar
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    android:background="@color/colorPrimary"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" >

</androidx.appcompat.widget.Toolbar>
<SearchView
    android:id="@+id/searchView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:queryHint="Search Here"
    android:iconifiedByDefault="false"
    android:layout_alignParentTop="true"
    android:background="@drawable/search_bar"
    android:layout_marginLeft="15dp"
    android:layout_marginRight="15dp"
    android:layout_marginTop="20dp"
    android:pointerIcon="crosshair"
    android:theme="@style/Widget.AppCompat.SearchView"
    android:focusedByDefault="true"
    />
<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/white">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="5dp">
    </androidx.recyclerview.widget.RecyclerView>
</LinearLayout>
<com.google.android.material.chip.ChipGroup
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginTop="16dp"
    android:id="@+id/chipGroup"
    app:chipSpacing="25dp"/>
</LinearLayout>

搜索适配器:

public class SearchAdapter extends RecyclerView.Adapter<SearchAdapter.CustomViewHolder> implements Filterable {

List<StartLearning.SlModel> Slmdel;
List<StartLearning.SlModel> Slmdel1;

Context context;

public SearchAdapter() {
}

public void setMovieList(Context context, final List<StartLearning.SlModel> movieList){
    this.context = context;
    if(this.Slmdel == null){
        this.Slmdel = movieList;
        this.Slmdel1 = movieList;
        notifyItemChanged(0, Slmdel1.size());
    } else {
        final DiffUtil.DiffResult result = DiffUtil.calculateDiff(new DiffUtil.Callback() {
            @Override
            public int getOldListSize() {
                return SearchAdapter.this.Slmdel.size();
            }

            @Override
            public int getNewListSize() {
               // return movieList.size();
                return (movieList == null) ? 0 : movieList.size();

            }

            @Override
            public boolean areItemsTheSame(int oldItemPosition, int newItemPosition) {
                return SearchAdapter.this.Slmdel.get(oldItemPosition).getTitle() == movieList.get(newItemPosition).getTitle();
            }

            @Override
            public boolean areContentsTheSame(int oldItemPosition, int newItemPosition) {

                StartLearning.SlModel newMovie = SearchAdapter.this.Slmdel.get(oldItemPosition);

                StartLearning.SlModel oldMovie = movieList.get(newItemPosition);

                return newMovie.getTitle() == oldMovie.getTitle() ;
            }
        });
        this.Slmdel = movieList;
        this.Slmdel1 = movieList;
        result.dispatchUpdatesTo(this);
    }
}

public SearchAdapter(Context context,List<StartLearning.SlModel> employees) {
    this.Slmdel = employees;
    this.context=context;
}

@Override
public SearchAdapter.CustomViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View itemView = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.startlearning_item, parent, false);

    return new SearchAdapter.CustomViewHolder(itemView);
}

@Override
public void onBindViewHolder(SearchAdapter.CustomViewHolder holder, int position) {

    holder.employeeName.setText(Slmdel.get(position).getTitle());
}

@Override
public int getItemCount() {
    if(Slmdel != null){
        return Slmdel1.size();
    } else {
        return 0;
    }

}
   @Override
    public Filter getFilter() {
  return new Filter() {
      @Override
      protected FilterResults performFiltering(CharSequence constraint) {
          final FilterResults oReturn = new FilterResults();
          final List<StartLearning.SlModel> results = new ArrayList<StartLearning.SlModel>();
          if (Slmdel1 == null)
              Slmdel1 = Slmdel;
          if (constraint != null) {
              if (Slmdel1 != null & Slmdel1.size() > 0) {
                  for (final StartLearning.SlModel g : Slmdel1) {
                      if (g.getTitle().toLowerCase().contains(constraint.toString()))
                          results.add(g);
                  }
              }
              oReturn.values = results;
          }
          return oReturn;
      }

      @Override
      protected void publishResults(CharSequence constraint, FilterResults results) {
          Slmdel1 = (ArrayList<StartLearning.SlModel>) results.values;
          notifyDataSetChanged();

      }
  };}

  public class CustomViewHolder extends RecyclerView.ViewHolder {
      public TextView employeeName;
      TextView textView;

      public CustomViewHolder(View view) {
          super(view);
          employeeName = (TextView) view.findViewById(R.id.Sl2);
          textView = view.findViewById(R.id.Sl1);
          view.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View v) {
                  Intent intent = new Intent(context, NextSLactivity.class);
                  intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                  intent.putExtra("title", Slmdel.get(getAdapterPosition()).getTitle());
                  intent.putExtra("idSLnext", Slmdel.get(getAdapterPosition()).getId());
                  //Log.e("ashwini",WAmdel.get(getAdapterPosition()).getId());
                  context.startActivity(intent);

              }
          });
      }
  }
}

推荐答案

您可以使用 recyclerview 和适配器获得与搜索查询相关的建议.

You can achieve suggestions related to your search query using recyclerview and adapters.

[1] 创建新的适配器并将您的 setMovieList() 和 getFilter() 放入其中.

[1] Create new adapter and put your setMovieList() and getFilter() into it.

[2] 将该适配器设置为建议的回收站视图，并在您获得建议的数组列表时通知适配器.

[2] Set that adapter into recyclerview of suggestions and notify adapter when you get your arraylist of suggestions.

检查下面的代码

public void onResponse(retrofit2.Call<List<StartLearning.SlModel>> call, Response<List<StartLearning.SlModel>> response) {

                        movieList = response.body();
                        if(movieList.size()!=0){
                            tvSuggestions.setVisibility(View.VISIBLE);
                            suggestionAdapter=new SuggestionAdapter(Search.this,movieList);
                            recyclerViewSuggestions.setAdapter(suggestionAdapter);
                            Log.e("TAG", "onResponse: size of movielist "+movieList);
                            suggestionAdapter.getFilter().filter(query);
                            suggestionAdapter.notifyDataSetChanged();
                            suggestionAdapter.setMovieList(Search.this,movieList);

                        }
                        else{
                            tvSuggestions.setVisibility(View.VISIBLE);
                            tvSuggestions.setText("No Suggestions Found");
                        }

                        /*generateDataList(movieList);
                        Log.d("TAG","Response = "+movieList);
                        slAdapter.setMovieList(getApplicationContext(),movieList);*/

                    }

这篇关于使用搜索视图的特定标题(从 api 获取)?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！