Android搜索建议(搜索联想)
16lz
2021-01-23
Android的搜索建议,简言之,就是说当用户输入某一个关键词后,系统自动给出几个含有相近关键词的搜索建议。
效果图如下:
MainActivity.java
package zhangphil.search;import android.support.v7.app.ActionBarActivity;import android.os.Bundle;import android.provider.SearchRecentSuggestions;import android.view.View;import android.widget.Button;public class MainActivity extends ActionBarActivity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button search = (Button) findViewById(R.id.search);search.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// 发起搜索search();}});Button clear = (Button) findViewById(R.id.clear);clear.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {clear();}});}private void search() {// 向Android系统发起搜索请求。this.onSearchRequested();}// onSearchRequested()方法可以重载 ,也可以不用重载。取决于是否有更多参数或数据传递给下一步操作。// 通常代码运行逻辑需要传递更多数据给下一个动作时候,则可以重载此方法以完成更多数据的传递。// 如果不重载,也可以。Android系统会启动默认的搜索框。(在UI的上方)@Overridepublic boolean onSearchRequested() {Bundle bundle = new Bundle();bundle.putString("some key", "some value");this.startSearch("输入搜索的关键词"/** 初始化搜索框中的提示词 */, true, bundle, false /** 此处若为true,则将启动手机上的全局设置的那个搜索,比如Google搜索 */);return true;}// 清除全部历史搜索记录private void clear() {SearchRecentSuggestions suggestions = new SearchRecentSuggestions(this,ZhangPhilSuggestionProvider.AUTHORITY,ZhangPhilSuggestionProvider.MODE);// 出于用户隐私的考虑,给APP提供清除所有用户搜索历史记录的选项。suggestions.clearHistory();}}
onSearchRequested将触发Android系统自动弹出搜索框。MainActivity需要的布局文件activity_main.xml很简单,两个按钮,一个触发搜索事件,一个触发清除搜索历史记录动作:
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <Button android:id="@+id/search" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/search" /> <Button android:id="@+id/clear" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/clear" /> </LinearLayout>
AndroidManifest.xml的内容:
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="zhangphil.search" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="22" /> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name=".MainActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> <meta-data android:name="android.app.default_searchable" android:value=".SearchActivity" /> </activity> <activity android:name=".SearchActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.SEARCH" /> </intent-filter> <meta-data android:name="android.app.searchable" android:resource="@xml/searchable" /> </activity> <provider android:name=".ZhangPhilSuggestionProvider" android:authorities="ZhangPhil_AUTHORITY" /> </application></manifest>
SearchActivity.java文件:
package zhangphil.search;import android.app.Activity;import android.app.SearchManager;import android.content.Intent;import android.os.Bundle;import android.provider.SearchRecentSuggestions;import android.widget.Toast;public class SearchActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);Intent intent = getIntent();if (Intent.ACTION_SEARCH.equals(intent.getAction())) {// 存关键词saveMyRecentQuery(intent);}}private void saveMyRecentQuery(Intent intent) {// 把搜索的关键词保存到Android系统的自带的数据库中。// 如无必要定制,则此过程可以使用标准、通用的方法。String query = intent.getStringExtra(SearchManager.QUERY);SearchRecentSuggestions suggestions = new SearchRecentSuggestions(this,ZhangPhilSuggestionProvider.AUTHORITY,ZhangPhilSuggestionProvider.MODE);suggestions.saveRecentQuery(query, null);Toast.makeText(this, "搜索关键词:" + query ,Toast.LENGTH_LONG).show();}}
ZhangPhilSuggestionProvider.java
package zhangphil.search;import android.content.SearchRecentSuggestionsProvider;public class ZhangPhilSuggestionProvider extendsSearchRecentSuggestionsProvider {// 可随意定义一个可区别的字符串,但注意全局的唯一相同引用。public final static String AUTHORITY = "ZhangPhil_AUTHORITY";public final static int MODE = DATABASE_MODE_QUERIES;public ZhangPhilSuggestionProvider() {setupSuggestions(AUTHORITY, MODE);}}
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:searchSuggestAuthority="ZhangPhil_AUTHORITY" android:searchSuggestSelection=" ?"></searchable>
完整的项目全部代码文件我已经上传到CSDN,可以点击下载链接下载到本地,解压后导入到Eclipse运行演示。CSDN下载链接:
http://download.csdn.net/detail/zhangphil/8603509
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