修改 ListView 的 Android 搜索

Question

我是 android 应用程序开发的新手，目前正试图弄清楚如何将搜索添加到应用程序。我做了一些搜索，我最容易理解的教程是here。

应用程序按应有的方式运行和搜索。唯一的问题是本教程用于搜索 ListView。托管我的应用程序搜索的活动具有其他需要在屏幕上显示的详细信息（项目视图、文本视图），因此 ListView 不适用于我正在尝试做的事情。如何修改此示例以在用户在搜索框中键入内容时提供建议下拉列表？理想情况下，我想要在 image here 中看到的搜索。

ItemSearch.java

import android.app.SearchManager;
import android.content.Context;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.SearchView;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

import java.util.List;

public class ItemSearch extends AppCompatActivity {

    ArrayAdapter<String> adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.item_search_activity);

        final String[] months = {"January", "February", "March", "April",
                "May", "June", "July", "August", "September", "October",
                "November", "December"};
        adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, months);
        final ListView listview = (ListView) findViewById(R.id.listView1);
        listview.setAdapter(adapter);

        listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
                String text = (String) listview.getItemAtPosition(position);
                Toast.makeText(getApplicationContext(), text,
                        Toast.LENGTH_SHORT).show();
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.menu_search, menu);


        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
        SearchView searchView = (SearchView) menu.findItem(R.id.search).getActionView();

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

            @Override
            public boolean onQueryTextChange(String newText) {

                adapter.getFilter().filter(newText);

                return false;
            }
        });
        return true;
    }

}

item_search_acitivity.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:fillViewport="true">
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/item_view_activity"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.me.ItemSearch">


    <ImageView
        />

    <ImageView
        />

    <ImageView
       />

    <TextView
        />

    <TextView
         />

    <TextView
        />

    <ListView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/listView1"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />
</RelativeLayout>
    </ScrollView>

res/menu/menu_search 下的menu_search.xml

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item android:id="@+id/search"
            android:title="@string/hint_search"
            android:icon="@android:drawable/ic_menu_search"
            app:showAsAction="collapseActionView|ifRoom"
            app:actionViewClass="android.support.v7.widget.SearchView" />
</menu>

res/xml/searchable下的searchable.xml

<?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:searchSuggestIntentAction="android.intent.action.VIEW">
</searchable>

在我添加的 AndroidManifest.xml 中

<activity android:name=".ItemSearch" 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>

Answer 1

对于这种类型的下拉建议功能，您可以使用AutoCompleteTextView。

下面的示例用法：

在您的布局文件中：

<AutoCompleteTextView
    android:id="@+id/auto_complete_tv"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="@string/key"/>

在arrays.xml或strings.xml等资源文件中：

<string-array name="suggestions">
    <item>January</item>
    <item>February</item>
    <item>March</item>
    ...
</string-array>

在您的片段或活动中：

AutoCompleteTextView autoCompleteTv;

...

AutoCompleteTextView autoCompleteTv = (AutoCompleteTextView) view.findViewById(R.id.auto_complete_tv);
autoCompleteTv.setAdapter(ArrayAdapter.createFromResource(view.getContext(), R.array.suggestions, android.R.layout.simple_dropdown_item_1line));