使用搜索视图的特定标题（从 api 中获取）？

Question

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键入特定主题名称（如果存在 in-app）时，它应该能够提供建议，如果找到它应该打开该主题 activity （就像 Facebook、Instagram 等搜索）..这些标题来自 API（我已经在其他活动中成功展示）..像这样:

..它的逻辑是什么？？？需要帮助...谢谢

所以我刚刚像这样在 XML 中包含了搜索视图-->

  <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activity：

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）

activity:其中一项（例如：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activity:

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();
}
}

xml 搜索：

<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);

              }
          });
      }
  }
}

Answer 1

android 中有一个新的 Chip Material 组件。可以用来满足要求。我相信你目前正在使用一些 recyclerview 来显示那些搜索项目，而不是使用这个使用 ChiGroup 来保存那些 values.a

下面是一些示例代码

首先将此添加到您的 gradle 以使用外部库依赖项

implementation 'com.google.android.material:material:1.0.0-alpha1'

然后在搜索视图下方的所需布局中放置此 xml 代码。

<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"/>

ChipGroup 将包含 Chip 个将动态添加的项目。

所以现在在您的搜索中 activity/fragment 只需获取此布局组的参考即可。

        public class Search extends AppCompatActivity {
        SearchView searchView;
        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);
            //new code 
            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);
            if (getSupportActionBar() != null) {
                getSupportActionBar().setDisplayHomeAsUpEnabled(true);
                getSupportActionBar().setDisplayShowHomeEnabled(true);
            }
        }
        @Override
        public boolean onOptionsItemSelected(@NonNull MenuItem item) {
            if (item.getItemId() ==android.R.id.home) {
                finish();
            }
            return super.onOptionsItemSelected(item);
        }
        @Override
        public void onBackPressed() {
            super.onBackPressed();
        }

        //new code
        public void searchForResults(String search){
          //here make an api call to get the results, complete the code here
          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();
                 //after getting the results pass to addChips()
                 addChips(list)
                 Log.d("TAG","Response = "+movieList);


             }

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

             }
          });
        }

        //just call this when you get the search result from the api with your custom model and where ever it is applicable.
        public void addChips(List<StartLearning.SlModel> searchItems){
          for (StartLearning.SlModel item : searchItems) {
             Chip mChip = (Chip) this.getLayoutInflater().inflate(R.layout.item_chip, null, false);
             mChip.setText(item.title);
             int paddingDp = (int) TypedValue.applyDimension(
                     TypedValue.COMPLEX_UNIT_DIP, 10,
                     getResources().getDisplayMetrics()
             );
             mChip.setPadding(paddingDp, 0, paddingDp, 0);
             mChip.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View view) {
                // Handle the click here
                }
             });
             chipGroup.removeAllViews();
             chipGroup.addView(mChip);
         }
       }
   }

在搜索中找不到相关代码activity举个例子。但总体思路如下。

1) 您添加一个 ChipGroup 来保存将在您的搜索视图中动态添加的 Chip 视图 xml。 2) 用户搜索一些东西，你得到 api 响应，然后你创建了一个基于模型的列表。 3) 然后您逐个遍历列表并创建动态筹码。

4) 但首先创建一个包含以下内容的 item_chip.xml 文件。

<com.google.android.material.chip.Chip xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:paddingLeft="8dp"
android:paddingRight="8dp"
android:id=@+id/smallChip
style="@style/Widget.MaterialComponents.Chip.Choice"
android:textAppearance="?android:attr/textAppearance"
android:textColor="@color/secondaryTextColor"
app:chipBackgroundColor="@color/colorAccent" />

5) 现在我们将 inflate 这个布局文件并将其添加到我们之前收到的 for 循环中的 ChipGroup。

6) 所以示例代码是这样将动态芯片添加到 ChipGroup。为简单起见，我在这里使用字符串作为搜索项，您可以在此处使用自己的模型。

public void addChips(ArrayList<String> searchItems){
    for (String item : searchItems) {
        Chip mChip = (Chip) this.getLayoutInflater().inflate(R.layout.item_chip, null, false);
        mChip.setText(item);
        int paddingDp = (int) TypedValue.applyDimension(
                TypedValue.COMPLEX_UNIT_DIP, 10,
                getResources().getDisplayMetrics()
        );
        mChip.setPadding(paddingDp, 0, paddingDp, 0);
        mChip.setOnClickListener(new OnClickListener() {
           @Override
           public void onClick(View view) {
           // Handle the click here
           }
        });
        chipGroup.addView(mChip);
    }
}

现在我们刚刚将芯片动态添加到我们之前在搜索视图布局中声明的 chipGroup 中。但这也可以使用 Recyclerview 而不是使用 ChipGropup 来完成，只需在 recyclerview 项目中添加 Chip View 并获取参考并设置文本，就像您对文本视图所做的那样，除了适配器和项目布局之外没有任何改变。

编辑：2020 年 4 月 1 日

将 ChipGrop 放入下面的 XML 文件中进行搜索。这个想法是搜索视图输入框将位于顶部，搜索建议将位于搜索框下方，以便在同一屏幕上提供不断变化的搜索结果。所以在 Search activity 本身中调用与搜索相关的 API 调用，并将结果传递给示例方法 addChips() 我上面已经提到了。

<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" />

<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"/>

<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>

有关更多信息，请阅读以下博客：

Material Design Chips

How to use Chips Blog

How to add Chips to ChipsGroup

Answer 2

你可以在花一点时间后做这个 Chip View 按钮，我发现这个库更适合你的情况，因为你试图通过搜索视图实现。

所以试试这个：

将此行添加到您的模块级别 build.gradle:

 dependencies {
   implementation "com.hootsuite.android:nachos:1.1.1"
}

在您的 xml 布局中包含一个 NachoTextView，如下所示：

<com.hootsuite.nachos.NachoTextView
android:id="@+id/nacho_text_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>

您可以在 github 上查看完整内容，也可以通过搜索视图查找此答案来实现：

Answer 3

将此库添加到您的 gradle

    implementation 'com.google.android.material:material:1.2.0-alpha02'

将 AppTheme 的父级更改为 values/styles.xml 中的 Theme.MaterialComponents.Light.NoActionBar 。就像这样

<style name="AppTheme" parent="Theme.MaterialComponents.Light.NoActionBar">

现在您需要将 edittext 和 chipgroup 添加到您的 xml。就像这样

  <EditText
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/search_edittext"/>
<com.google.android.material.chip.ChipGroup
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/chipgroup"
    app:singleSelection="true"
    >

</com.google.android.material.chip.ChipGroup>

现在创建 method 添加 chip 到 chipgroup

    void setChip(List<String> list)
    {
    chipgroup.removeAllViews();
    for (String item : list)
    {
        Chip chip =new Chip(this);
        chip.setText(item);

        // necessary to get single selection working
        chip.setCheckable(true);

        chip.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.e("OnCheckedChangeListener", "Called");

            }
        });

        //on chip click


        chipgroup.addView(chip);
    }
}

现在将 addTextChangedListener 添加到您的 edittext

   search_edittext.addTextChangedListener(new TextWatcher() {

     @Override
     public void afterTextChanged(Editable s) {}

     @Override    
     public void beforeTextChanged(CharSequence s, int start,
     int count, int after) {}

     @Override    
     public void onTextChanged(CharSequence s, int start,
     int before, int count) {
           List<String> tem=new ArrayList();
            for (String item : list)
            {
                if (item.toString().toLowerCase().contains(s.toString().toLowerCase()))
                    tem.add(item);
            }
            setChip(tem);
      }
     });

这就完成了。

Answer 4

您可以使用 recyclerview 和适配器获得与您的搜索查询相关的建议。

[1] 创建新的 adapter 并把你的 setMovieList() 和 getFilter() 进去。

[2] 将该适配器设置为 recyclerview of suggestions 并在您获得建议数组列表时通知适配器。

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);*/

                    }

使用搜索视图的特定标题（从 api 中获取）？

particular title(fetched from api) using searchview?

android

android-studio

retrofit

retrofit2

android-chips