最近我一直在尝试将SearchView添加到我的应用中，因此我遵循this video和this documentation的建议。
到目前为止，我已采取以下步骤：
<item
android:id="@+id/action_search"
android:title="Buscar"
android:icon="@drawable/ic_arrow_upward_black_24dp"
android:iconifiedByDefault="true"
app:showAsAction="ifRoom|collapseActionView"
app:actionViewClass="androidx.appcompat.widget.SearchView" />
onCreateOptionsMenu()中添加了以下内容（但仍然不知道如何执行最终搜索）： @Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
MenuItem searchItem = menu.findItem(R.id.action_search);
SearchView searchView = (SearchView)
MenuItemCompat.getActionView(searchItem);
searchView.setOnQueryTextListener(
new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String s) {
Intent launchNewIntent = new Intent(MainActivity.this, SearchableActivity.class);
startActivityForResult(launchNewIntent, 0);
return true;
}
@Override
public boolean onQueryTextChange(String s) {
return true;
}
}
);
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
ComponentName componentName = new ComponentName(getApplicationContext(), SearchableActivity.class);
searchView.setSearchableInfo(searchManager.getSearchableInfo(componentName));
return true;
}
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
ComponentName componentName = new ComponentName(getApplicationContext(), SearchableActivity.class);
searchView.setSearchableInfo(searchManager.getSearchableInfo(componentName));
return true;
}
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
ComponentName componentName = new ComponentName(getApplicationContext(), SearchableActivity.class);
searchView.setSearchableInfo(searchManager.getSearchableInfo(componentName));
<?xml version="1.0" encoding="utf-8"?>
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
android:label="@string/app_name"
android:hint="Buscar" >
</searchable>
<activity android:name=".ui.activity.SearchableActivity"
android:launchMode="singleTop" >
<intent-filter>
<action android:name="android.intent.action.SEARCH" />
</intent-filter>
<meta-data android:name="android.app.searchable"
android:resource="@xml/searchable" />
</activity>
public class SearchableActivity extends AppCompatActivity {
TextView tvSearch;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
handleIntent(getIntent());
}
@Override
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);
setIntent(intent);
handleIntent(intent);
}
private void handleIntent(Intent intent) {
if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
String query = intent.getStringExtra(SearchManager.QUERY);
doMySearch(query);
}
}
private void doMySearch(String query) {
tvSearch.setText(query);
}
}
从现在开始，考虑到我的Adapter填充了ListView从服务器中保存的JSON文件中获取的数据，我不知道如何继续显示搜索结果。
除了SearchableActivity.java故障的草图之外，其他一切都还可以，但是由于仍然有很多空白，所以没有显示预期的结果。
我宁愿只使用MainActivity.java和当前的适配器来显示结果，但是现在我只想了解要使该工作至少要做些什么。
以防万一，我将适配器放在这里，以帮助您了解问题：
public class MyListAdapter extends ArrayAdapter<Subreddit> {
List<Subreddit> subreddits;
Context context;
private LayoutInflater mInflater;
private SubredditList subredditList;
// Constructors
public MyListAdapter(Context context, SubredditList subredditList, String sortingColumn, boolean reverse) {
super(context, 0, subredditList.getSubreddits(sortingColumn, reverse));
this.context = context;
this.mInflater = LayoutInflater.from(context);
this.subredditList = subredditList;
subreddits = subredditList.getSubreddits(sortingColumn, reverse);
}
public static String getDate(String stringData) throws ParseException {
SimpleDateFormat inputDate = new SimpleDateFormat("EEE MMM d HH:mm:ss zzz yyyy", Locale.getDefault());
Date date = inputDate.parse(stringData);
SimpleDateFormat outputDate = new SimpleDateFormat("dd/MM/yyyy", Locale.getDefault());
System.out.println(date);
return outputDate.format(date);
}
@Override
public Subreddit getItem(int position) {
return subreddits.get(position);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
final ViewHolder viewHolder;
if (convertView == null) {
View view = mInflater.inflate(R.layout.layout_row_view, parent, false);
viewHolder = ViewHolder.create((LinearLayout) view);
view.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
Subreddit item = getItem(position);
if (subreddits.get(position).getIcon().equals("")) { //url.isEmpty()
GlideApp.with(context)
[...]
} else {
GlideApp.with(context)
[...]
}
viewHolder.textViewName.setText(item.getName());
viewHolder.textViewDescription.setText(item.getDescription());
viewHolder.textViewActivity.setText(String.valueOf(item.getTotalActivity(subredditList)));
DecimalFormat formatter = new DecimalFormat("###,###,###");
String decimalFormat = formatter.format(item.getMembers()).replace(",", ".");
viewHolder.textViewMembers.setText(decimalFormat);
try {
viewHolder.textViewAge.setText(getDate(new Date(item.getAge() * 1000).toString()));
} catch (ParseException e) {
e.printStackTrace();
}
[...]
if (subreddits.get(position).getNSFW()) {
[...]
} else {
[...]
}
if (position % 2 == 1) {
[...]
} else {
[...]
}
return viewHolder.rootView;
}
private static class ViewHolder {
public final LinearLayout rootView;
public final FrameLayout frameIcon;
public final ImageView imageViewIcon;
[...]
private ViewHolder(LinearLayout rootView,
FrameLayout frameIcon,
ImageView imageViewIcon,
[...]
) {
this.rootView = rootView;
this.frameIcon = frameIcon;
this.imageViewIcon = imageViewIcon;
[...]
}
public static ViewHolder create(LinearLayout rootView) {
FrameLayout frameIcon = rootView.findViewById(R.id.frameIcon);
ImageView imageViewIcon = rootView.findViewById(R.id.imageViewIcon);
[...]
return new ViewHolder(rootView,
frameIcon,
imageViewIcon,
[...]
);
}
}
}
非常感谢您的推进，如果需要，我可以提供有关代码的更多详细信息。