Android辅助搜索：搜索按钮不会调用可搜索的活动（其他解决方案没有帮助）

Question

我编写了这个小型测试应用程序来演示问题，即当用户按下键盘上的搜索按钮时，可搜索的活动未启动。

我一直在关注开发人员指南，但从我的网络搜索中，发现官方开发人员指南遗漏了一些要点。从我的SO搜索（没有帮助）：

> < li>

参考1:通过在清单的元素中添加标记来解决。我还查看了示例“用户字典”的清单(我不知道在网上哪里可以找到示例，或者我会链接到它)。这个标签在application元素中。

引用2:RES/XML/searchable . XML中的“android:label”和“android:hint”必须是对字符串资源的引用，而不是硬编码的字符串。我的是。

参考3：添加带有“android:name=”android.app的标签。default_searchable“”（和“android:value=”

参考文献 4：“您的可搜索活动必须执行某些操作 ， 并实际显示结果。我的是，它接收带有ACTION_SEARCH操作的意图，并将从意图检索到的搜索查询字符串传递给名为“performSearch（string）”的方法，该方法在文本视图中显示字符串。

那么我做错了什么，我能做些什么来解决这个问题呢？

代码：主要活动.java - 具有单个 SearchView - 用户输入查询并按键盘上的“搜索”按钮。

public class MainActivity extends ActionBarActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
}

测试TwoActivity.java

    public class TestTwoActivity extends Activity {
        TextView tv;
        private static final String TAG = TestTwoActivity.class.getSimpleName();

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

            /**
             * The following code enables assisted search on the SearchView by calling setSearchableInfo() and passing it our SearchableInfo object.
             */
            SearchView searchView = (SearchView) findViewById(R.id.searchActivity_searchView);
            // SearchManager => provides access to the system search services.

            // Context.getSystemService() => Return the handle to a system-level
            // service by name. The class of the returned object varies by the
            // requested name.

            // Context.SEARCH_SERVICE => Returns a SearchManager for handling search

            // Context = Interface to global information about an application environment. This is an abstract class whose implementation is provided by the Android
            // system. It allows access to application-specific resources and classes, as well as up-calls for application-level operations such as launching
            // activities, broadcasting and receiving intents, etc.

            // Activity.getComponentName = Returns a complete component name for this Activity 

            SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
            searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));

            /**
             * If the search is executed from another activity, the query is sent to this (searchable) activity in an Intent with ACTION_SEARCH action.
             */
            // getIntent() Returns the intent that started this Activity
            Intent intent = getIntent();
            if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
                Log.i(TAG, "Search Query Delivered");//check
                String searchQuery = intent.getStringExtra(SearchManager.QUERY);
                performSearch(searchQuery);
            }

        }

        private void performSearch(String searchQuery) {
            //Just for testing purposes, I am simply printing the search query delivered to this searchable activity in a textview.
            tv = (TextView) findViewById(R.id.testTwoActivity_textView);
            tv.setText(searchQuery);
        }
}

res/xml/searchable。xml-可搜索配置

<?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/searchViewHint" >
</searchable>

清单文件

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.tests"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />

    <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>
        </activity>

        <activity
            android:name=".TestTwoActivity"
            android:label="@string/title_activity_test_two" >
            <intent-filter>
                <action android:name="android.intent.action.SEARCH"/> <!-- Declares the activity to accept ACTION_SEARCH intent -->
            </intent-filter> 
                <meta-data 
                    android:name="android.app.searchable"
                    android:resource="@xml/searchable" /> <!-- Specifies the searchable configuration to use --> 
        </activity>

        <!-- Points to searchable activity so the whole app can invoke search. -->
        <meta-data android:name="android.app.default_searchable"
                   android:value=".TestTwoActivity" />

    </application>

</manifest>

布局:

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"

    android:orientation="vertical"

    android:layout_width="match_parent"
    android:layout_height="match_parent"

    tools:context="com.tests.MainActivity" >

    <android.support.v7.widget.SearchView
        android:id="@+id/searchActivity_searchView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
         /> 

</LinearLayout>

活动_测试_二. xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"

    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"

    tools:context="${relativePackage}.${activityClass}" >

    <android.support.v7.widget.SearchView
        android:id="@+id/searchActivity_searchView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
         /> 

    <TextView
        android:id="@+id/testTwoActivity_textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

编辑1:我写了一个类似的应用程序，用搜索dilogue而不是搜索小工具，这太疯狂了，它工作得非常好。

我尝试在Eclipse中调试它，但调试停止，因为TestTwoActive（可搜索活动）根本无法启动。

Answer 1

我不确定您是否忘记添加它，但您的MainActivity未在SearchView上设置可搜索信息：

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    SearchView searchView = (SearchView) findViewById(R.id.searchActivity_searchView);
    SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
    searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
}

作为旁注：

在使用风格时，我在元标记default_searchable遇到了问题。它似乎仅在使用搜索活动的完整路径（跳过风格）时才有效，例如：

<meta-data 
    android:name="android.app.default_searchable"
    android:value="com.example.SearchActivity"/>