在android中使用viewpager的带有多个片段的SearchView
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【中文标题】在android中使用viewpager的带有多个片段的SearchView【英文标题】：SearchView with multiple fragments using viewpager in android 【发布时间】：2015-12-22 04:45:07 【问题描述】：我想用 viewPager 中的多个片段来实现 SearchView。所有片段都包含列表，我想过滤这些列表并创建一个新的 ListView，它根据它所属的片段对结果进行分类。
但我的 searchView 无法处理一个片段。
这是我的主要活动：
package com.codeon.directory;
import android.app.SearchManager;
import android.content.Context;
import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.SearchView;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.View;
import com.codeon.directory.fragments.FiveFragment;
import com.codeon.directory.fragments.FourFragment;
import com.codeon.directory.fragments.OneFragment;
import com.codeon.directory.fragments.SixFragment;
import com.codeon.directory.fragments.ThreeFragment;
import com.codeon.directory.fragments.TwoFragment;
import java.util.ArrayList;
import java.util.List;
/**
* Created by Nikhil Jain on 21-Sep-15.
*/
public class TabEffect extends AppCompatActivity
private TabLayout tabLayout;
private ViewPager viewPager;
public String pic[] = "1","2","3","1","2","3","1","2","3","1","2","3","1","2","3";
public String state[] = "A","B","C";
public String city[] = "P","Q","R";
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.tablayout);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
toolbar.setNavigationOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
onBackPressed();
);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
@Override
public boolean onCreateOptionsMenu(Menu menu)
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.tab, menu);
// Associate searchable configuration with the SearchView
SearchManager searchManager =
(SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchView searchView =
(SearchView) menu.findItem(R.id.action_search).getActionView();
searchView.setSearchableInfo(
searchManager.getSearchableInfo(getComponentName()));
return true;
private void setupViewPager(ViewPager viewPager)
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
Bundle bundle = new Bundle();
bundle.putStringArray("pic", pic);
bundle.putStringArray("district", city);
bundle.putStringArray("state", state);
adapter.addFragment(new OneFragment(), "ONE FRAGMENT", bundle);
adapter.addFragment(new TwoFragment(), "TWO FRAGMENT", bundle);
adapter.addFragment(new ThreeFragment(), "THREE FRAGMENT", bundle);
adapter.addFragment(new FourFragment(), "FOUR FRAGMENT", bundle);
adapter.addFragment(new FiveFragment(), "FIVE FRAGMENT", bundle);
adapter.addFragment(new SixFragment(), "SIX FRAGMENT", bundle);
viewPager.setAdapter(adapter);
class ViewPagerAdapter extends FragmentPagerAdapter
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager)
super(manager);
@Override
public Fragment getItem(int position)
return mFragmentList.get(position);
@Override
public int getCount()
return mFragmentList.size();
public void addFragment(Fragment fragment, String title, Bundle args)
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
fragment.setArguments(args);
@Override
public CharSequence getPageTitle(int position)
return mFragmentTitleList.get(position);
这是我的第一个片段：
package com.codeon.directory.fragments;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import com.codeon.directory.R;
import com.codeon.directory.RecyclerAdapter;
import com.codeon.directory.customadapters.Listitems_new;
import java.util.ArrayList;
/**
* Created by Nikhil Jain on 21-Sep-15.
*/
public class OneFragment extends Fragment
ListView list;
private ArrayAdapter<String> listAdapter ;
public OneFragment()
// Required empty public constructor
@Override
public void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState)
RecyclerView rootView = (RecyclerView) inflater.inflate(R.layout.fragment_one, container, false);
// Inflate the layout for this fragment
Bundle extras = getArguments();
String pic[] = extras.getStringArray("pic");
String state[] = extras.getStringArray("state");
Log.e("VALUE",pic[0]+pic[1]+pic[2]);
rootView.setLayoutManager(new LinearLayoutManager(rootView.getContext()));
//listAdapter = new ArrayAdapter<>(getActivity(), android.R.layout.simple_list_item_1, android.R.id.text1, pic);
rootView.setAdapter(new RecyclerAdapter(pic));
return rootView;
我的搜索活动：
package com.codeon.directory;
import android.app.Activity;
import android.app.SearchManager;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;
/**
* Created by Nikhil Jain on 21-Sep-15.
*/
public class SearchActivity extends Activity
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.search);
// Get the intent, verify the action and get the query
Intent intent = getIntent();
if (Intent.ACTION_SEARCH.equals(intent.getAction()))
String query = intent.getStringExtra(SearchManager.QUERY);
doMySearch(query);
Log.e("QUERY", query);
private void doMySearch(String query)
这是我的 AndroidManifest.xml：
<activity
android:name=".TabEffect"
android:label="@string/tablayout"
android:theme="@style/AppTheme" >
</activity>
<activity android:name=".SearchActivity" >
<intent-filter>
<action android:name="android.intent.action.SEARCH" />
</intent-filter>
<meta-data android:name="android.app.searchable"
android:resource="@layout/searchable"/>
</activity>
这是我的可搜索布局：
<?xml version="1.0" encoding="utf-8"?>
<searchable
xmlns:android="http://schemas.android.com/apk/res/android"
android:label="@string/app_name"
android:hint="@string/search_hint"
android:layout_
android:layout_/>
简单来说，我想像在 Whatsapp 中一样实现 searchView。
【问题讨论】：
你找到解决办法了吗？ 你弄明白了吗？ 找到解决方案了吗？ 问题的结构很好。有什么解决方案吗？！ 你找到解决办法了吗？ 【参考方案1】：@Chintan 是对的。我们需要使用 ViewModel。 关注this。
-
创建 SearchViewModel：
'''
private MutableLiveData<String> query= new MutableLiveData<String>();
public void setQuery(String queryData)
query.setValue(queryData);
public LiveData<String> getQuery()
return query;
'''
-
搜索父片段
'''
public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater)
inflater.inflate(R.menu.search_menu, menu);
super.onCreateOptionsMenu(menu, inflater);
final MenuItem myMenuItem = menu.findItem(R.id.search_icon);
searchViewModel = new ViewModelProvider(requireActivity()).get(SearchViewModel.class);
searchView = (SearchView) myMenuItem.getActionView();
searchView.setQueryHint("Search");
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener()
@Override
public boolean onQueryTextSubmit(String query)
return false;
@Override
public boolean onQueryTextChange(String newText)
searchViewModel.setQuery(newText);
return false;
);
'''
-
对于每个子片段（选项卡）
'''
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState)
super.onViewCreated(view, savedInstanceState);
searchViewModel = new ViewModelProvider(requireActivity()).get(SearchViewModel.class);
searchViewModel.getQuery().observe(getViewLifecycleOwner(), new Observer<String>()
@Override
public void onChanged(String s)
if (s!=null)
adapter.getFilter().filter(s);
);
'''
单个查询将适用于所有选项卡。） 我研究了很长时间，但是这个解决方案对我有用。
【讨论】：
【参考方案2】：我得到了我的片段列表，其中一个 Searchview 使用以下代码工作.. 将代码放在你想要的每个片段中
@Override
public void setUserVisibleHint(boolean isVisibleToUser)
super.setUserVisibleHint(isVisibleToUser);
if (isVisibleToUser)
search_bar.setOnQueryTextListener(this);
if(listAdapter!=null)
listAdapter.getFilter().filter(search_bar.getQuery());
截图：
【讨论】：
【参考方案3】：以下提示可能对您有所帮助
public class AnyActivity extends AppCompatActivity
private ListenFromActivity activityListener1;
然后用单独的文件定义接口
public interface ListenFromActivity
void doSearchInFragment(String SearchKey);
现在在你的片段中
public class Connections extends Fragment implements ListenFromActivity
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
((AnyActivity)Objects.requireNonNull(getActivity())).setActivityTab1Listener(Connections.this);
@Override
public void doSearchInFragment(String SearchKey)
//pass to any network or local call.
【讨论】：
【参考方案4】：如果您想搜索所有片段的查询，必须使用 Viewmodel 和 Livedata。 在 Livedata 中设置您的查询，然后在您的 Livedata 中观察您的所有片段。
viewPager 端的这段代码
val searchLiveData = MutableLiveData<String>()
searchLiveData.postValue("query")
所有片段中的这段代码
mainViewModel.searchLiveData.observe(viewLifecycleOwner, Observer query ->
//Add your code
)
//1
val liveData: MutableLiveData<Any>()
//2
liveData.value = "Hello"
//3
liveData.observe(this, Observer
// Update UI
)
【讨论】：
【参考方案5】：很好的答案Любовь，真的帮助我。ViewModel 非常适合片段。 所以如果你想从 MainActivity 触发搜索。 您需要创建： 1.ViewModel
public class SearchViewModel extends ViewModel
public MutableLiveData<String> query = new MutableLiveData<String>();
public void setQuery(String queryData)
query.setValue(queryData);
public LiveData<String> getQuery()
return query;
2.在要触发和执行搜索的活动中创建它的实例。
searchViewModel = new ViewModelProvider(this).get(SearchViewModel.class);
SearchView searchView = (SearchView) bottomAppBar.getMenu().findItem(R.id.search).getActionView();
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener()
@Override
public boolean onQueryTextSubmit(String query)
Log.i("onQueryTextSubmit", query);
return false;
@Override
public boolean onQueryTextChange(String newText)
searchViewModel.setQuery(newText);
Log.i("onQueryTextChange", newText);
return false;
);
3.在片段中创建 ViewModel 的实例以观察它在 mainActivity 中的变化（这样你就可以将数据从 Activity 传递到片段）
searchViewModel = new ViewModelProvider(getActivity()).get(SearchViewModel.class);
searchViewModel.getQuery().observe(getViewLifecycleOwner(), new Observer<String>()
@Override
public void onChanged(String s)
if (s != null)
Log.i("onChanged",s);
adapter.getFilter().filter(s);
Log.i("filter",s);
);
4.如果它的字符串数组，getFilter 现在如何使用它，则在您的适配器中覆盖并实现自定义 getFilter（仅当您为其提供自定义对象时）。
@Override
public Filter getFilter()
if (filter == null)
filter = new SearchFilter();
return filter;
私有类 SearchFilter 扩展了 Filter
@Override
protected FilterResults performFiltering(CharSequence s)
FilterResults result = new FilterResults();
if(s != null && s.toString().length() > 0)
s = s.toString().toLowerCase();
ArrayList<Word> filteredItems = new ArrayList<Word>();
for(int i = 0, l = searchList.size(); i < l; i++)
if(searchList.get(i).getmDefaultTranslation().toLowerCase().contains(s))
Word x = new Word(searchList.get(i).getmDefaultTranslation(),searchList.get(i).getmMiwokTranslation(),
searchList.get(i).getmImageResourceId(),searchList.get(i).getmAudioResourceId());
filteredItems.add(x);
result.count = filteredItems.size();
result.values = filteredItems;
else
result.count = searchList.size();
result.values = searchList;
return result;
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence s,
FilterResults results)
numbersWords = (ArrayList<Word>)results.values;
Log.i("new search", String.valueOf(results));
notifyDataSetChanged();
对不起我的技术语言！！！ 这是我的仓库的链接，您可以在其中检查具有多个片段的搜索的完整实现（使用 ViewModel） https://github.com/artnkfv/Multiscreen_App/tree/main_v1.1
【讨论】：
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