什么是R.layout.search? [英] What is R.layout.search?

问题描述

我正在创建一个搜索窗口小部件和一个可搜索的活动.我遵循了android开发者指南，并且到目前为止.

I'm creating a search widget and a searchable activity. I followed the android developer guide and have this so far.

这是我的searchableActivity.java

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

    // Get the intent, verify the action and get the query
    Intent intent = getIntent();
    if (Intent.ACTION_SEARCH.equals(intent.getAction())) {

        String query = intent.getStringExtra(SearchManager.QUERY);
        doMySearch(query);
    }
}

如上所述，R.layout.search正在创建错误.我在布局中没有搜索xml，也无法理解应该在search.xml中定义的内容.

As mentioned, R.layout.search is creating the error. I don't have a search xml in layouts, and I don't understand what I am supposed to define within search.xml.

推荐答案

您需要在res/layout文件夹中具有一个名为search.xml的布局，在其中您将显示搜索结果. 以我为例，我在RecyclerView中显示了搜索结果，这是我的示例布局.

You need to have a layout named search.xml in your res/layout folder where you'll show the search results. I my case I showed the search results in a RecyclerView and here's a sample layout of mine.

<FrameLayout 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:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/color_background_search">

    <LinearLayout
        android:id="@+id/empty_view"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="50dp"
        android:gravity="center_horizontal"
        android:orientation="vertical">

        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="20dp"
            android:tint="@color/color_primary_light"
            android:src="@drawable/ic_action_search" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/empty_search_result"
            android:textColor="@color/black"
            android:textSize="20sp" />
    </LinearLayout>


    <android.support.v7.widget.RecyclerView
        android:id="@+id/search_list"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</FrameLayout>

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