SupportMapFragment出现空白(谷歌地图V2) [英] SupportMapFragment appearing blank (Map Google V2)

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本文介绍了SupportMapFragment出现空白(谷歌地图V2)的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我想在片段容器加载 SupportMapFragment 。我没有错误,我的API密钥是罚款,谷歌Play服务库是进口的,所有的权限被调用。

我称之为 MapFragment 是这样的:

  MapaFragment片段=新MapaFragment();
FragmentTransaction平方英尺= getFragmentManager()调用BeginTransaction()。
ft2.replace(android.R.id.tabcontent,片段)
    。承诺();

片段如下:

 公共类MapaFragment扩展SupportMapFragment {
私人视图V;@覆盖
公共查看onCreateView(LayoutInflater充气器,容器的ViewGroup,
        捆绑savedInstanceState){
    super.onCreateView(充气器,容器,savedInstanceState);
    V = inflater.inflate(R.layout.mapa,NULL);    返回伏;
}

和对地图的布局很简单,只要这样的:

 <?XML版本=1.0编码=UTF-8&GT?;
<片段的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
    机器人:ID =@ + ID /地图
    机器人:layout_width =match_parent
    机器人:layout_height =match_parent
    类=com.google.android.gms.maps.SupportMapFragment/>


解决方案

您已经添加SupportMapFragment在XML布局文件,它没有必要在code重新添加或覆盖onCreateView方法,只需注释掉这些

  MapaFragment片段=新MapaFragment();
FragmentTransaction平方英尺= getFragmentManager()调用BeginTransaction()。
ft2.replace(android.R.id.tabcontent,片段)
    。承诺();

和这些

 私人视图V;@覆盖
公共查看onCreateView(LayoutInflater充气器,容器的ViewGroup,
        捆绑savedInstanceState){
    super.onCreateView(充气器,容器,savedInstanceState);
    V = inflater.inflate(R.layout.mapa,NULL);    返回伏;
}

code的

线并尝试运行应用程序

I want to load a SupportMapFragment in a Fragment container. I get no errors, my API Key is fine, Google Play Services Library is imported and all permissions are called.

I call the MapFragment this way:

MapaFragment fragment = new MapaFragment();
FragmentTransaction ft2 = getFragmentManager().beginTransaction();
ft2.replace(android.R.id.tabcontent, fragment)          
    .commit();

The Fragment is as follows:

public class MapaFragment extends SupportMapFragment {
private View v;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    super.onCreateView(inflater, container, savedInstanceState);
    v=inflater.inflate(R.layout.mapa, null);

    return v;       
}

And the layout for the map is as simple as this:

<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/mapa"    
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    class="com.google.android.gms.maps.SupportMapFragment"/>

解决方案

You have already added SupportMapFragment in xml layout file, it's not necessary to add it again in code or override onCreateView method, just comment out these

MapaFragment fragment = new MapaFragment();
FragmentTransaction ft2 = getFragmentManager().beginTransaction();
ft2.replace(android.R.id.tabcontent, fragment)          
    .commit();

and these

private View v;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    super.onCreateView(inflater, container, savedInstanceState);
    v=inflater.inflate(R.layout.mapa, null);

    return v;       
}

lines of code and try to run the app

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