【Android】第3章（6）示例5--多地图展示-php手册-php.cn

分类：C#、Android、VS2015、百度地图应用；创建日期：2016-02-04 3.5 示例5--多地图展示一、简介地图控件自v2.3.5版本起，支持多实例，即开发者可以在一个页面中建立多个地图对象，并且针对这些对象分别操作且不会产生相互干扰。文件名：Demo04MultiMap

分类：C#、Android、VS2015、百度地图应用；创建日期：2016-02-04

3.5 示例5--多地图展示

一、简介

地图控件自v2.3.5版本起，支持多实例，即开发者可以在一个页面中建立多个地图对象，并且针对这些对象分别操作且不会产生相互干扰。

文件名：Demo04MultiMapView.cs

简介：介绍多MapView的使用

详述：在一个界面内，同时建立四个TextureMapView控件；

二、示例

1、运行截图

在x86模拟器中的运行效果如下：

在上一节例子的基础上，只需要再增加下面的步骤即可。

2、添加demo05_multimap.axml文件

在layout文件夹下添加该文件，将其改为下面的代码：

<?xml version=<span style="color: #800000;">"<span style="color: #800000;">1.0</span><span style="color: #800000;">"</span> encoding=<span style="color: #800000;">"</span><span style="color: #800000;">utf-8</span><span style="color: #800000;">"</span>?>
<linearlayout xmlns:android="<span" style="color: #800000;">"<span style="color: #800000;">http://schemas.android.com/apk/res/android</span><span style="color: #800000;">"</span><span style="color: #000000;">
    xmlns:map</span>=<span style="color: #800000;">"</span><span style="color: #800000;">http://schemas.android.com/apk/res-auto</span><span style="color: #800000;">"</span><span style="color: #000000;">
    android:layout_width</span>=<span style="color: #800000;">"</span><span style="color: #800000;">match_parent</span><span style="color: #800000;">"</span><span style="color: #000000;">
    android:layout_height</span>=<span style="color: #800000;">"</span><span style="color: #800000;">match_parent</span><span style="color: #800000;">"</span><span style="color: #000000;">
    android:orientation</span>=<span style="color: #800000;">"</span><span style="color: #800000;">vertical</span><span style="color: #800000;">"</span> >

    LinearLayout
        android:layout_width=<span style="color: #800000;">"</span><span style="color: #800000;">match_parent</span><span style="color: #800000;">"</span><span style="color: #000000;">
        android:layout_height</span>=<span style="color: #800000;">"</span><span style="color: #800000;">match_parent</span><span style="color: #800000;">"</span><span style="color: #000000;">
        android:layout_marginBottom</span>=<span style="color: #800000;">"</span><span style="color: #800000;">5dp</span><span style="color: #800000;">"</span><span style="color: #000000;">
        android:layout_weight</span>=<span style="color: #800000;">"</span><span style="color: #800000;">1</span><span style="color: #800000;">"</span><span style="color: #000000;">
        android:orientation</span>=<span style="color: #800000;">"</span><span style="color: #800000;">horizontal</span><span style="color: #800000;">"</span> >

        fragment
            android:id=<span style="color: #800000;">"</span><span style="color: #800000;">@+id/map1</span><span style="color: #800000;">"</span><span style="color: #000000;">
            android:layout_width</span>=<span style="color: #800000;">"</span><span style="color: #800000;">match_parent</span><span style="color: #800000;">"</span><span style="color: #000000;">
            android:layout_height</span>=<span style="color: #800000;">"</span><span style="color: #800000;">match_parent</span><span style="color: #800000;">"</span><span style="color: #000000;">
            android:layout_marginRight</span>=<span style="color: #800000;">"</span><span style="color: #800000;">5dp</span><span style="color: #800000;">"</span><span style="color: #000000;">
            android:layout_weight</span>=<span style="color: #800000;">"</span><span style="color: #800000;">1</span><span style="color: #800000;">"</span>
            <span style="color: #0000ff;">class</span>=<span style="color: #800000;">"</span><span style="color: #800000;">com.baidu.mapapi.map.TextureMapFragment</span><span style="color: #800000;">"</span> />

        fragment
            android:id=<span style="color: #800000;">"</span><span style="color: #800000;">@+id/map2</span><span style="color: #800000;">"</span><span style="color: #000000;">
            android:layout_width</span>=<span style="color: #800000;">"</span><span style="color: #800000;">match_parent</span><span style="color: #800000;">"</span><span style="color: #000000;">
            android:layout_height</span>=<span style="color: #800000;">"</span><span style="color: #800000;">match_parent</span><span style="color: #800000;">"</span><span style="color: #000000;">
            android:layout_weight</span>=<span style="color: #800000;">"</span><span style="color: #800000;">1</span><span style="color: #800000;">"</span>
            <span style="color: #0000ff;">class</span>=<span style="color: #800000;">"</span><span style="color: #800000;">com.baidu.mapapi.map.TextureMapFragment</span><span style="color: #800000;">"</span> />
    </linearlayout>

    LinearLayout
        android:layout_width=<span style="color: #800000;">"</span><span style="color: #800000;">match_parent</span><span style="color: #800000;">"</span><span style="color: #000000;">
        android:layout_height</span>=<span style="color: #800000;">"</span><span style="color: #800000;">match_parent</span><span style="color: #800000;">"</span><span style="color: #000000;">
        android:layout_weight</span>=<span style="color: #800000;">"</span><span style="color: #800000;">1</span><span style="color: #800000;">"</span><span style="color: #000000;">
        android:orientation</span>=<span style="color: #800000;">"</span><span style="color: #800000;">horizontal</span><span style="color: #800000;">"</span> >

        fragment
            android:id=<span style="color: #800000;">"</span><span style="color: #800000;">@+id/map3</span><span style="color: #800000;">"</span><span style="color: #000000;">
            android:layout_width</span>=<span style="color: #800000;">"</span><span style="color: #800000;">match_parent</span><span style="color: #800000;">"</span><span style="color: #000000;">
            android:layout_height</span>=<span style="color: #800000;">"</span><span style="color: #800000;">match_parent</span><span style="color: #800000;">"</span><span style="color: #000000;">
            android:layout_marginRight</span>=<span style="color: #800000;">"</span><span style="color: #800000;">5dp</span><span style="color: #800000;">"</span><span style="color: #000000;">
            android:layout_weight</span>=<span style="color: #800000;">"</span><span style="color: #800000;">1</span><span style="color: #800000;">"</span>
            <span style="color: #0000ff;">class</span>=<span style="color: #800000;">"</span><span style="color: #800000;">com.baidu.mapapi.map.TextureMapFragment</span><span style="color: #800000;">"</span> />

        fragment
            android:id=<span style="color: #800000;">"</span><span style="color: #800000;">@+id/map4</span><span style="color: #800000;">"</span><span style="color: #000000;">
            android:layout_width</span>=<span style="color: #800000;">"</span><span style="color: #800000;">match_parent</span><span style="color: #800000;">"</span><span style="color: #000000;">
            android:layout_height</span>=<span style="color: #800000;">"</span><span style="color: #800000;">match_parent</span><span style="color: #800000;">"</span><span style="color: #000000;">
            android:layout_weight</span>=<span style="color: #800000;">"</span><span style="color: #800000;">1</span><span style="color: #800000;">"</span>
            <span style="color: #0000ff;">class</span>=<span style="color: #800000;">"</span><span style="color: #800000;">com.baidu.mapapi.map.TextureMapFragment</span><span style="color: #800000;">"</span> />

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3、添加Demo05MultiMapView.cs文件

在SdkDemos文件夹下添加该文件，然后将其内容改为下面的代码：

<span style="color: #0000ff;">using</span><span style="color: #000000;"> Android.App;
</span><span style="color: #0000ff;">using</span><span style="color: #000000;"> Android.Content.PM;
</span><span style="color: #0000ff;">using</span><span style="color: #000000;"> Android.OS;
</span><span style="color: #0000ff;">using</span><span style="color: #000000;"> Com.Baidu.Mapapi.Map;
</span><span style="color: #0000ff;">using</span><span style="color: #000000;"> Com.Baidu.Mapapi.Model;

</span><span style="color: #0000ff;">namespace</span><span style="color: #000000;"> BdMapV371Demos.SrcSdkDemos
{
    </span><span style="color: #808080;">///</span> <span style="color: #808080;"><summary></summary></span>
    <span style="color: #808080;">///</span><span style="color: #008000;"> 在一个Activity中展示多个地图
    </span><span style="color: #808080;">///</span> <span style="color: #808080;"></span>
    [Activity(Label = <span style="color: #800000;">"</span><span style="color: #800000;">@string/demo_name_multimap</span><span style="color: #800000;">"</span><span style="color: #000000;">,
        ConfigurationChanges </span>= ConfigChanges.Orientation |<span style="color: #000000;"> ConfigChanges.KeyboardHidden,
        ScreenOrientation </span>=<span style="color: #000000;"> ScreenOrientation.Sensor)]
    </span><span style="color: #0000ff;">public</span> <span style="color: #0000ff;">class</span><span style="color: #000000;"> Demo05MutiMapView : Activity
    {
        </span><span style="color: #0000ff;">PRivate</span> <span style="color: #0000ff;">readonly</span> LatLng Geo_BeiJing = <span style="color: #0000ff;">new</span> LatLng(<span style="color: #800080;">39.945</span>, <span style="color: #800080;">116.404</span><span style="color: #000000;">);
        </span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">readonly</span> LatLng Geo_ShangHai = <span style="color: #0000ff;">new</span> LatLng(<span style="color: #800080;">31.227</span>, <span style="color: #800080;">121.481</span><span style="color: #000000;">);
        </span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">readonly</span> LatLng Geo_GuangZhou = <span style="color: #0000ff;">new</span> LatLng(<span style="color: #800080;">23.155</span>, <span style="color: #800080;">113.264</span><span style="color: #000000;">);
        </span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">readonly</span> LatLng Geo_ShenZhen = <span style="color: #0000ff;">new</span> LatLng(<span style="color: #800080;">22.560</span>, <span style="color: #800080;">114.064</span><span style="color: #000000;">);

        </span><span style="color: #0000ff;">protected</span> <span style="color: #0000ff;">override</span> <span style="color: #0000ff;">void</span><span style="color: #000000;"> OnCreate(Bundle savedInstanceState)
        {
            </span><span style="color: #0000ff;">base</span><span style="color: #000000;">.OnCreate(savedInstanceState);
            SetContentView(Resource.Layout.demo05_multimap);
            InitMap();
        }

        </span><span style="color: #808080;">///</span> <span style="color: #808080;"><summary></summary></span>
        <span style="color: #808080;">///</span><span style="color: #008000;"> 初始化Map
        </span><span style="color: #808080;">///</span> <span style="color: #808080;"></span>
        <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span><span style="color: #000000;"> InitMap()
        {
            MapStatusUpdate u1 </span>=<span style="color: #000000;"> MapStatusUpdateFactory.NewLatLng(Geo_BeiJing);
            TextureMapFragment map1 </span>= FragmentManager.FindFragmentById<texturemapfragment><span style="color: #000000;">(Resource.Id.map1);
            map1.BaiduMap.SetMapStatus(u1);

            MapStatusUpdate u2 </span>=<span style="color: #000000;"> MapStatusUpdateFactory.NewLatLng(Geo_ShangHai);
            TextureMapFragment map2 </span>= FragmentManager.FindFragmentById<texturemapfragment><span style="color: #000000;">(Resource.Id.map2);
            map2.BaiduMap.SetMapStatus(u2);

            MapStatusUpdate u3 </span>=<span style="color: #000000;"> MapStatusUpdateFactory.NewLatLng(Geo_GuangZhou);
            TextureMapFragment map3 </span>= FragmentManager.FindFragmentById<texturemapfragment><span style="color: #000000;">(Resource.Id.map3);
            map3.BaiduMap.SetMapStatus(u3);

            MapStatusUpdate u4 </span>=<span style="color: #000000;"> MapStatusUpdateFactory.NewLatLng(Geo_ShenZhen);
            TextureMapFragment map4 </span>= FragmentManager.FindFragmentById<texturemapfragment><span style="color: #000000;">(Resource.Id.map4);
            map4.BaiduMap.SetMapStatus(u4);
        }
    }
}</span></texturemapfragment></texturemapfragment></texturemapfragment></texturemapfragment>

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4、修改MainActivity.cs文件

在MainActivity.cs文件的demos字段定义中添加下面的代码。

<span style="color: #008000;">          //</span><span style="color: #008000;">示例5--多地图展示</span>
            <span style="color: #0000ff;">new</span> DemoInfo<activity><span style="color: #000000;">(Resource.String.demo_title_multimap,
                Resource.String.demo_desc_multimap,
                </span><span style="color: #0000ff;">new</span> Demo05MutiMapView()),</activity>

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运行观察结果。