Fragment中的android MapView [英] android MapView in Fragment
本文介绍了Fragment中的android MapView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
我想在我的 Fragment
MapView
这是我的FragmentLayout
xml 文件
<com.google.android.gms.maps.MapViewandroid:id="@+id/mapview"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_above="@+id/textView1"机器人:layout_alignParentLeft =真"android:layout_alignParentRight="true"android:layout_marginBottom="70dp" ></com.google.android.gms.maps.MapView></RelativeLayout>
我的AndroidManifest.xml
文件
<申请机器人:allowBackup =真"android:icon="@drawable/ic_launcher"android:label="@string/app_name"android:theme="@style/AppTheme" ><元数据android:name="com.google.android.maps.v2.API_KEY"android:value="your_api_key"/><元数据android:name="com.google.android.gms.version"android:value="@integer/google_play_services_version"/></应用程序><uses-permission android:name="android.permission.CAMERA"/><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/><uses-permission android:name="android.permission.INTERNET"/><uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/><uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/><uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/><权限android:name="a.b.c.d.permission.MAPS_RECEIVE"android:protectionLevel="签名"/><uses-permission android:name="a.b.c.d.permission.MAPS_RECEIVE"/><uses-permission android:name="android.permission.INTERNET"/><uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/><uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/><uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/><uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/></清单>
和我的 Fragment 类
public class ReportFragment extends Fragment 实现 LocationListener {MapView mapView = null;//最终它正在从视图中读取并分配
当我启动应用程序时,我在 Fragment 中看不到任何地图视图
解决方案
您应该像
一样在Layout
中添加 MapView
并实现你的 Fragment
就像
public class SomeFragment extends Fragment {地图视图地图视图;谷歌地图;@覆盖公共视图 onCreateView(LayoutInflater inflater,ViewGroup 容器,Bundle savedInstanceState) {查看 v = inflater.inflate(R.layout.some_layout, container, false);//从 XML 布局中获取 MapView 并创建它mapView = (MapView) v.findViewById(R.id.mapview);mapView.onCreate(savedInstanceState);//从 MapView 获取 GoogleMap 并执行初始化操作地图 = mapView.getMap();map.getUiSettings().setMyLocationButtonEnabled(false);map.setMyLocationEnabled(true);//在执行任何 CameraUpdateFactory 调用之前需要调用 MapsInitializer尝试 {MapsInitializer.initialize(this.getActivity());} catch (GooglePlayServicesNotAvailableException e) {e.printStackTrace();}//更新 MapView 的位置和缩放CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(new LatLng(43.1, -87.9), 10);map.animateCamera(cameraUpdate);返回 v;}@覆盖公共无效 onResume() {mapView.onResume();super.onResume();}@覆盖公共无效 onDestroy() {super.onDestroy();mapView.onDestroy();}@覆盖公共无效 onLowMemory() {super.onLowMemory();mapView.onLowMemory();}}
I want to have MapView
inside my Fragment
This is my FragmentLayout
xml file
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#17df0d"
android:orientation="vertical" >
<com.google.android.gms.maps.MapView
android:id="@+id/mapview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/textView1"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="70dp" >
</com.google.android.gms.maps.MapView>
</RelativeLayout>
My AndroidManifest.xml
file
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="a.b.c.d"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="your_api_key" />
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
</application>
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<permission
android:name="a.b.c.d.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="a.b.c.d.permission.MAPS_RECEIVE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
</manifest>
and my Fragment class
public class ReportFragment extends Fragment implements LocationListener {
MapView mapView = null; //eventually it is being read from view and assigned
when I launch the app, I do not see any map view in my Fragment
解决方案
From Josh Holtz's example on GitHub:
You should add MapView
in your Layout
like
<com.google.android.gms.maps.MapView
android:id="@+id/mapview"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
and implement your Fragment
like
public class SomeFragment extends Fragment {
MapView mapView;
GoogleMap map;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.some_layout, container, false);
// Gets the MapView from the XML layout and creates it
mapView = (MapView) v.findViewById(R.id.mapview);
mapView.onCreate(savedInstanceState);
// Gets to GoogleMap from the MapView and does initialization stuff
map = mapView.getMap();
map.getUiSettings().setMyLocationButtonEnabled(false);
map.setMyLocationEnabled(true);
// Needs to call MapsInitializer before doing any CameraUpdateFactory calls
try {
MapsInitializer.initialize(this.getActivity());
} catch (GooglePlayServicesNotAvailableException e) {
e.printStackTrace();
}
// Updates the location and zoom of the MapView
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(new LatLng(43.1, -87.9), 10);
map.animateCamera(cameraUpdate);
return v;
}
@Override
public void onResume() {
mapView.onResume();
super.onResume();
}
@Override
public void onDestroy() {
super.onDestroy();
mapView.onDestroy();
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
}
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