在搜索查看一个活动，导致一个又一个 [英] SearchView in one activity, results in another one

问题描述

我的使用案例如下：在活动A，我有一个可折叠的搜索查看一个操作栏。当用户给她查询和presses搜索按钮，我想的结果显示b活动。我不这样做，这是我的code：

My use case is the following: in activity A, I have an action bar with a collapsible SearchView. When the user gives her query and presses the 'search' button, I would like to show activity B with the results. I'm failing to do so, here is my code:

searchable.xml：

searchable.xml:

<?xml version="1.0" encoding="utf-8"?>
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
            android:hint="@string/action_search_hint"
            android:label="@string/app_name"/>

活动答：

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.menu, menu);

    SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
    SearchView searchView = (SearchView) menu.findItem(R.id.action_search).getActionView();
    searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));

    return true;
}

AndroidManifest的活动A和B：

AndroidManifest for Activity A and B:

    <activity
        android:name=".ActivityA">

        <intent-filter>

            <action android:name="android.intent.action.MAIN"/>

            <category android:name="android.intent.category.LAUNCHER"/>

        </intent-filter>

    </activity>

    <activity android:name=".ActivityB">

        <intent-filter>

            <action android:name="android.intent.action.SEARCH"/>

        </intent-filter>

        <meta-data
            android:name="android.app.searchable"
            android:resource="@xml/searchable"/>

    </activity>

Howerver，不管我怎么努力，getSearchableInfo在一个始终返回null。

Howerver, no matter what I try, getSearchableInfo in A always returns null.

我有我不认识的东西的感觉。我可以让getSearchableInfo的唯一途径（）返回NOT NULL是当我把搜索意图过滤器和搜索元数据到一个活动中的体现。但是，当我preSS的搜索按钮，一个活动的另一个实例再次启动对当前之一，它肯定是不是我想要的顶部。我想我可以添加singleTop A和处理onNewIntent的搜索行动，并启动B，但我一般不希望一个是singleTop，我希望默认。还是我？

I have the feeling I'm not understanding something. The only way I can make getSearchableInfo() return not null is when I put the SEARCH intent filter and the searchable meta-data into activity A in the manifest. But then, when I press the 'search' button, another instance of activity A is started again on top of the current one, which definitely is not what I want. I guess I could add singleTop to A and handle the SEARCH action in onNewIntent and start B, but I generally don't want A to be singleTop, I want the default. Or do I?

我试过在清单中添加此为A（在一些其他线程建议）：

I tried adding this to A in the manifest (as suggested in some other threads):

    <meta-data
        android:name="android.app.default_searchable"
        android:value=".ActivityB" >
    </meta-data>

我在做什么错了？

What am I doing wrong?

编辑：我取代了'getComponentName（）中带有以下行：

I replaced the 'getComponentName()' line in A with the following:

searchView.setSearchableInfo(searchManager.getSearchableInfo(new ComponentName(this, ActivityB.class)));

和它似乎工作就是我想要的！我在这里做得不对，或这是正确的方法是什么？我有点不确定，因为它没有提及任何地方！

and it seems to work the way I want! Am I doing something wrong here, or is this the correct way? I'm a bit uncertain because it is not mentioned anywhere!

推荐答案

据<一个href=\"http://developer.android.com/reference/android/app/SearchManager.html#getSearchableInfo(android.content.ComponentName)\">Android单证中， SearchManager.getSearchableInfo（组件名）接受一个参数，它是：

According to Android documentations, SearchManager.getSearchableInfo(componentName) takes one argument, which is:

组件名：活动获取搜索信息

componentName: The activity to get searchable information for

在你的情况你需要 ActivityB ，所以构建的组件名它指向 ActivityB 是正确的方法。

In your case you need ActivityB, so constructing a ComponentName that points to ActivityB is the correct way

new ComponentName(this, ActivityB.class)

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