如何使用谷歌地图Android版中的片段? [英] How to use google map in android fragment?

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问题描述

我正在开发使用碎片的应用程序。我的一个片段,我想使用谷歌地图,但我收到错误信息。

 公共类地图扩展片段{
        公共地图(){
            //必需的空公共构造
        }        @覆盖
        公共无效的onCreate(捆绑savedInstanceState){
            super.onCreate(savedInstanceState);
        }        @覆盖
        公共查看onCreateView(LayoutInflater充气器,容器的ViewGroup,
                                 捆绑savedInstanceState){
            //充气的布局该片段
            使用GoogleMap地图=((SupportMapFragment)getFragmentManager()findFragmentById(R.id.map)。)的GetMap();
//错误:(38 84)错误:不可兑换的类型
//要求:SupportMapFragment
//发现:片段
返回inflater.inflate(R.layout.fragment_map,集装箱,FALSE);        }
    }

当我尝试投放地图片段我收到的评论的错误。我应该怎么做来解决这个?谢谢大家。
编辑:布局;

 <片段
        机器人:layout_width =match_parent
        机器人:layout_height =200dp
        机器人:ID =@ + ID /图
        机器人:名字=com.google.android.gms.maps.SupportMapFragment/>


解决方案

您可以通过这种方法。结果这是有我的片段类图形页面

 公共类DashBoardFragment扩展片段{
    // --------------类变量
    私人MapView类mMapView;
    私人GoogleMap的mGoogleMap;
    @覆盖
    公共查看onCreateView(LayoutInflater充气器,容器的ViewGroup,
                             捆绑savedInstanceState){
        查看查看= inflater.inflate(R.layout.fragment_dash_board,集装箱,FALSE);
      mMapView =(图形页面)view.findViewById(R.id.map_dashBoard);
        mMapView.onCreate(savedInstanceState);
        mMapView.onResume();        尝试{
            MapsInitializer.initialize(getActivity()getApplicationContext());
        }赶上(例外五){
            e.printStackTrace();
        }
        mGoogleMap = mMapView.getMap();
}}

结果
下面是我对XML片段结果

 < LinearLayout中的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
    的xmlns:工具=htt​​p://schemas.android.com/tool​​s
    机器人:layout_width =match_parent
    机器人:layout_height =match_parent
    机器人:方向=垂直
    工具:上下文=com.dev.abc>    < com.google.android.gms.maps.MapView
        的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
        机器人:ID =@ + ID / map_dashBoard
        机器人:layout_width =match_parent
        机器人:layout_height =match_parent
        />
< / LinearLayout中>

结果
清单应连同权限如下结果

 <元数据
            机器人:名字=com.google.android.maps.v2.API_KEY
            机器人:价值=你的API密钥/>

I am developing an app that use fragments. One of my fragments i want to use google map but i am getting errors.

    public class Map extends Fragment {
        public Map() {
            // Required empty public constructor
        }

        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            // Inflate the layout for this fragment


            GoogleMap map = ((SupportMapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
//Error:(38, 84) error: inconvertible types
//required: SupportMapFragment
//found:    Fragment
return inflater.inflate(R.layout.fragment_map, container, false);

        }
    }

When i trying to cast map fragment i am getting the error in comment. What should i do to solve this? Thanks for everyone. Edit: the layout ;

<fragment
        android:layout_width="match_parent"
        android:layout_height="200dp"
        android:id="@+id/map"
        android:name="com.google.android.gms.maps.SupportMapFragment" />

解决方案

You can go through this approach.
This is my Fragment class which has MapView

public class DashBoardFragment extends Fragment{
    //-------------- class variables
    private MapView mMapView;
    private GoogleMap mGoogleMap;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View view= inflater.inflate(R.layout.fragment_dash_board, container, false);
      mMapView = (MapView) view.findViewById(R.id.map_dashBoard);
        mMapView.onCreate(savedInstanceState);
        mMapView.onResume();

        try {
            MapsInitializer.initialize(getActivity().getApplicationContext());
        } catch (Exception e) {
            e.printStackTrace();
        }
        mGoogleMap = mMapView.getMap();     
}

}


Below is my xml for the fragment

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.dev.abc">

    <com.google.android.gms.maps.MapView
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/map_dashBoard"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        />
</LinearLayout>


Manifest should have the following along with permissions

<meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="your api key" />

这篇关于如何使用谷歌地图Android版中的片段?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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