我正在开发新闻应用程序，并且在导航抽屉中的片段中实现了recyclerview中的搜索视图，但是它没有过滤任何新闻。 我称两个终点为头条新闻
下方 根客户端类 @模块 公共类SportClient {
private static final String ROOT_URL = "https://newsapi.org";
/**
* Get Retrofit Instance
*/
private static Retrofit getRetrofitInstance() {
return new Retrofit.Builder()
.baseUrl(ROOT_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
}
/**
* Get API Service
*
* @return API Service
*/
@Provides
@ApplicationScope
public static SportInterface getApiService() {
return getRetrofitInstance().create(SportInterface.class);
}
@Provides
@ApplicationScope
OkHttpClient getOkHttpCleint(HttpLoggingInterceptor httpLoggingInterceptor) {
return new OkHttpClient.Builder()
.addInterceptor(httpLoggingInterceptor)
.build();
}
@Provides
@ApplicationScope
HttpLoggingInterceptor getHttpLoggingInterceptor() {
HttpLoggingInterceptor httpLoggingInterceptor = new HttpLoggingInterceptor();
httpLoggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
return httpLoggingInterceptor;
}
}
在第一个终点以下
我正在成为头条新闻 @GET（“ / v2 / top-headlines？sources = bbc-sport＆apiKey = d03441ae1be44f9cad8c38a2fa6db215”） 致电getArticles（）;
在我得到一切的第二点下面 @GET（“ / v2 / everything？apiKey = d03441ae1be44f9cad8c38a2fa6db215”） 调用getSearchViewArticles（@Query（“ q”）字符串q）;
在我实现了recyclerview的articleAdapter下方
公共类ArticleAdapter扩展了RecyclerView.Adapter {
public static final String urlKey = "urlKey";
List<Article> articles;
private ClipboardManager myClipboard;
private ClipData myClip;
public ArticleAdapter(List<Article> articles, SportNews sportNews) {
this.articles = articles;
}
public ArticleAdapter(ClickListener clickListener) {
}
public ArticleAdapter(List<Article> articleList, Search search) {
}
@NonNull
@Override
public ArticleAdapter.CustomViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
View itemView = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.article_list, null);
return new ArticleAdapter.CustomViewHolder(itemView);
}
@Override
public void onBindViewHolder(@NonNull edgar.yodgorbek.sportnews.adapter.ArticleAdapter.CustomViewHolder customViewHolder, int position) {
Article article = articles.get(position);
SimpleDateFormat input = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
SimpleDateFormat output = new SimpleDateFormat("dd/MM/yyyy");
Date d = new Date();
try {
d = input.parse(article.getPublishedAt());
} catch (ParseException e) {
e.printStackTrace();
}
String formatted = output.format(d);
customViewHolder.articleTime.setText(formatted);
customViewHolder.articleAuthor.setText(article.getSource().getName());
customViewHolder.articleTitle.setText(article.getTitle());
Picasso.get().load(article.getUrlToImage()).into(customViewHolder.articleImage);
customViewHolder.itemView.setOnClickListener(v -> {
Intent intent = new Intent(v.getContext(), DetailActivity.class);
intent.putExtra("urlKey", article.getUrl());
v.getContext().startActivity(intent);
});
customViewHolder.articleShare.setOnClickListener(v -> {
Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
sharingIntent.setType("text/plain");
String articleDescription = article.getDescription();
String articleTitle = article.getTitle();
sharingIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, articleDescription);
sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, articleTitle);
v.getContext().startActivity((Intent.createChooser(sharingIntent, "Share using")));
});
customViewHolder.articleFavorite.setOnClickListener(v -> {
myClipboard = (ClipboardManager) v.getContext().getSystemService(Context.CLIPBOARD_SERVICE);
myClip = ClipData.newPlainText("label", customViewHolder.articleTitle.getText().toString());
myClipboard.setPrimaryClip(myClip);
Toast.makeText(v.getContext(), "Copied to clipboard", Toast.LENGTH_SHORT).show();
});
}
@Override
public int getItemCount() {
if (articles == null) return 0;
return articles.size();
}
public interface ClickListener {
}
public class CustomViewHolder extends RecyclerView.ViewHolder {
@BindView(R.id.articleAuthor)
TextView articleAuthor;
@BindView(R.id.articleTitle)
TextView articleTitle;
@BindView(R.id.articleImage)
ImageView articleImage;
@BindView(R.id.articleTime)
TextView articleTime;
@BindView(R.id.articleShare)
ImageButton articleShare;
@BindView(R.id.articleFavorite)
ImageButton articleFavorite;
public CustomViewHolder(View view) {
super(view);
ButterKnife.bind(this, view);
}
}
}
在我得到json响应的片段类下面 公共类BBCSportFragment扩展Fragment实现ArticleAdapter.ClickListener {
public List<Article> articleList = new ArrayList<>();
@ActivityContext
public Context activityContext;
Search search;
@ApplicationContext
public Context mContext;
@BindView(R.id.recycler_view)
RecyclerView recyclerView;
BBCSportFragmentComponent bbcSportFragmentComponent;
BBCFragmentContextModule bbcFragmentContextModule;
private SportNews sportNews;
private ArticleAdapter articleAdapter;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_bbcsport, container, false);
ButterKnife.bind(this, view);
SportInterface sportInterface = SportClient.getApiService();
Call<SportNews> call = sportInterface.getArticles();
call.enqueue(new Callback<SportNews>() {
@Override
public void onResponse(Call<SportNews> call, Response<SportNews> response) {
if (response == null) {
sportNews = response.body();
if (sportNews != null && sportNews.getArticles() != null) {
articleList.addAll(sportNews.getArticles());
}
articleAdapter = new ArticleAdapter(articleList, sportNews);
ApplicationComponent applicationComponent;
applicationComponent = (ApplicationComponent) MyApplication.get(Objects.requireNonNull(getActivity())).getApplicationContext();
bbcSportFragmentComponent = (BBCSportFragmentComponent) DaggerApplicationComponent.builder().contextModule(new ContextModule(getContext())).build();
bbcSportFragmentComponent.injectBBCSportFragment(BBCSportFragment.this);
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getContext(applicationComponent));
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(articleAdapter);
}
}
@Override
public void onFailure(Call<SportNews> call, Throwable t) {
}
});
SportInterface searchInterface = SportClient.getApiService();
Call<Search> searchCall = searchInterface.getSearchViewArticles("q");
searchCall.enqueue(new Callback<Search>() {
@Override
public void onResponse(Call<Search> call, Response<Search> response) {
search = response.body();
if (search != null && search.getArticles() != null) {
articleList.addAll(search.getArticles());
}
articleAdapter = new ArticleAdapter(articleList, search);
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getContext());
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(articleAdapter);
}
@Override
public void onFailure(Call<Search> call, Throwable t) {
}
});
return view;
}
private Context getContext(ApplicationComponent applicationComponent) {
return null;
}
public static void doFilter(String searchQuery) {
}
}
在实现导航抽屉的MainActivity.java下面
public class MainActivity extends AppCompatActivity {
private DrawerLayout mDrawer;
private Toolbar toolbar;
private NavigationView nvDrawer;
private ActionBarDrawerToggle drawerToggle;
Context mContext;
// Default active navigation menu
int mActiveMenu;
// TAGS
public static final int MENU_FIRST = 0;
public static final int MENU_SECOND = 1;
public static final int MENU_THIRD = 2;
public static final int MENU_FOURTH = 3;
public static final int MENU_FIFTH = 3;
public static final String TAG = "crash";
// Action bar search widget
SearchView searchView;
String searchQuery = "";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Set a Toolbar to replace the ActionBar.
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// Find our drawer view
mDrawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawerToggle = setupDrawerToggle();
// Tie DrawerLayout events to the ActionBarToggle
mDrawer.addDrawerListener(drawerToggle);
nvDrawer = (NavigationView) findViewById(R.id.nvView);
// Inflate the header view at runtime
View headerLayout = nvDrawer.inflateHeaderView(R.layout.nav_header);
// We can now look up items within the header if needed
ImageView ivHeaderPhoto = (ImageView) headerLayout.findViewById((R.id.header_image));
ivHeaderPhoto.setImageResource(R.drawable.ic_sportnews);
setupDrawerContent(nvDrawer);
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction().replace(R.id.flContent, new BBCSportFragment()).commit();
fragmentManager.beginTransaction().replace(R.id.flContent, new FoxSportsFragment()).commit();
fragmentManager.beginTransaction().replace(R.id.flContent, new TalkSportsFragment()).commit();
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// The action bar home/up action should open or close the drawer.
switch (item.getItemId()) {
case android.R.id.home:
mDrawer.openDrawer(GravityCompat.START);
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
// Getting search action from action bar and setting up search view
MenuItem searchItem = menu.findItem(R.id.action_search);
SearchView searchView = (SearchView) searchItem.getActionView();
// Setup searchView
setupSearchView(searchView);
Log.e(TAG,"crash");
return true;
}
public void setupSearchView(SearchView searchView) {
SearchManager searchManager = (SearchManager) this.getSystemService(Context.SEARCH_SERVICE);
if (searchManager != null) {
SearchableInfo info = searchManager.getSearchableInfo(getComponentName());
searchView.setSearchableInfo(info);
}
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextChange(String newText) {
searchQuery = newText;
// Load search data on respective fragment
if (mActiveMenu == MENU_FIRST) // First
{
BBCSportFragment.doFilter(newText);
}
if (mActiveMenu == MENU_SECOND) // First
{
BBCSportFragment.doFilter(newText);
}
if (mActiveMenu == MENU_THIRD) // First
{
BBCSportFragment.doFilter(newText);
}
if (mActiveMenu == MENU_FOURTH) // First
{
BBCSportFragment.doFilter(newText);
} else if (mActiveMenu == MENU_FIFTH) // Second
{
ESPNFragment.doFilter(newText);
}
return true;
}
@Override
public boolean onQueryTextSubmit(String query) {
//searchView.clearFocus();
return false;
}
});
// Handling focus change of search view
searchView.setOnQueryTextFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
// Focus changed after pressing back key or pressing done in keyboard
if (!hasFocus) {
searchQuery = "";
}
}
});
}
private void setupDrawerContent(NavigationView navigationView) {
navigationView.setNavigationItemSelectedListener(
menuItem -> {
selectDrawerItem(menuItem);
return true;
});
}
public void selectDrawerItem(MenuItem menuItem) {
// Create a new fragment and specify the fragment to show based on nav item clicked
Fragment fragment = null;
Class fragmentClass = null;
switch (menuItem.getItemId()) {
case R.id.bbcsports_fragment:
fragmentClass = BBCSportFragment.class;
break;
case R.id.talksports_fragment:
fragmentClass = TalkSportsFragment.class;
break;
case R.id.foxsports_fragment:
fragmentClass = FoxSportsFragment.class;
break;
case R.id.footballitalia_fragment:
fragmentClass = FootballItaliaFragment.class;
break;
case R.id.espn_fragment:
fragmentClass = ESPNFragment.class;
break;
default:
}
try {
fragment = (Fragment) fragmentClass.newInstance();
} catch (Exception e) {
e.printStackTrace();
}
// Insert the fragment by replacing any existing fragment
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction().replace(R.id.flContent, fragment).commit();
// Highlight the selected item has been done by NavigationView
menuItem.setChecked(true);
// Set action bar title
setTitle(menuItem.getTitle());
// Close the navigation drawer
mDrawer.closeDrawers();
}
private ActionBarDrawerToggle setupDrawerToggle() {
// NOTE: Make sure you pass in a valid toolbar reference. ActionBarDrawToggle() does not require it
// and will not render the hamburger icon without it.
return new ActionBarDrawerToggle(this, mDrawer, toolbar, R.string.drawer_open, R.string.drawer_close);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
drawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Pass any configuration change to the drawer toggles
drawerToggle.onConfigurationChanged(newConfig);
}
}
在main.xml下面
<?xml version="1.0" encoding="utf-8"?> <menu xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto"> <item android:id="@+id/action_search" android:icon="@drawable/ic_search_white" android:title="@string/search_hint" app:showAsAction="collapseActionView|ifRoom" app:actionViewClass="android.support.v7.widget.SearchView" /> </menu>