无法解析符号';地图视图';关于android studio
经过无数次的尝试,我找不到解决这个问题的方法。 Android不会在以下位置解析符号“mapView”:无法解析符号';地图视图';关于android studio,android,google-maps,android-studio,android-mapview,Android,Google Maps,Android Studio,Android Mapview,经过无数次的尝试,我找不到解决这个问题的方法。 Android不会在以下位置解析符号“mapView”: mMapView = (MapView) v.findViewById(R.id.mapView); 我想做的是让谷歌地图在模拟器上运行。 我知道这段代码在另一台电脑上工作,所以我猜这里还有其他东西。。(系统问题或谷歌地图api问题) 这是密码。 有人能帮忙吗?谢谢 package com.example.matant.gpsportclient.Controllers;
mMapView = (MapView) v.findViewById(R.id.mapView);
我想做的是让谷歌地图在模拟器上运行。
我知道这段代码在另一台电脑上工作,所以我猜这里还有其他东西。。(系统问题或谷歌地图api问题)
这是密码。
有人能帮忙吗?谢谢
package com.example.matant.gpsportclient.Controllers;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.example.matant.gpsportclient.AsyncResponse;
import com.example.matant.gpsportclient.R;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapView;
import com.google.android.gms.maps.MapsInitializer;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
/**
* Created by matant on 8/24/2015.
*/
public class GoogleMapFragmentController extends Fragment implements AsyncResponse {
MapView mMapView;
private GoogleMap googleMap;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// inflat and return the layout
View v = inflater.inflate(R.layout.fragment_google_map_fragment_controller, container,
false);
mMapView = (MapView) v.findViewById(R.id.mapView);
mMapView.onCreate(savedInstanceState);
mMapView.onResume();// display map immediately
try {
MapsInitializer.initialize(getActivity().getApplicationContext());
} catch (Exception e) {
e.printStackTrace();
}
googleMap = mMapView.getMap();
// latitude and longitude
double latitude = 17.385044;
double longitude = 78.486671;
// create marker
MarkerOptions marker = new MarkerOptions().position(
new LatLng(latitude, longitude)).title("Hello Maps");
// Changing marker icon
marker.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_ROSE));
// adding marker
googleMap.addMarker(marker);
CameraPosition cameraPosition = new CameraPosition.Builder()
.target(new LatLng(17.385044, 78.486671)).zoom(12).build();
googleMap.animateCamera(CameraUpdateFactory
.newCameraPosition(cameraPosition));
googleMap.getUiSettings().setZoomControlsEnabled(true);
// Perform any camera updates here
return v;
}
@Override
public void onResume() {
super.onResume();
mMapView.onResume();
}
@Override
public void onPause() {
super.onPause();
mMapView.onPause();
}
@Override
public void onDestroy() {
super.onDestroy();
mMapView.onDestroy();
}
@Override
public void onLowMemory() {
super.onLowMemory();
mMapView.onLowMemory();
}
@Override
public void handleResponse(String resStr) {
}
@Override
public void sendDataToDBController() {
}
@Override
public void preProcess() {
}
}
舱单:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.matant.gpsportclient"
android:versionCode="1"
android:versionName="1.0" >
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<uses-sdk
android:minSdkVersion="17"
android:targetSdkVersion="17" />
<permission
android:name="com.example.matant.gpsportclient.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.MANAGE_DOCUMENTS" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<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" />
<uses-permission android:name="com.example.matant.gpsportclient.permission.MAPS_RECEIVE" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".SplashScreen"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".Controllers.ForgotPassword"
android:label="@string/app_name" >
</activity>
<activity
android:name=".Controllers.Login"
android:label="@string/title_activity_login" >
</activity>
<activity
android:name=".Controllers.SignUp"
android:label="@string/title_activity_sign_up" >
</activity>
<activity
android:name=".MainScreen"
android:label="@string/title_activity_main_screen" >
</activity>
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="@string/google_maps_key" />
</application>
</manifest>
布局:
<RelativeLayout 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"
tools:context=".MainActivity" >
<fragment
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment" />
</RelativeLayout>
更换
mMapView = (MapView) v.findViewById(R.id.mapView);
与
因为片段的id是map
。请参阅xml
<fragment
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment" />
首先,您将错误的findviewbyId.set R.id.map改为mapviewOk,Done。。现在,当应用程序运行时,它会崩溃。。。得到了“不幸的是…已经停止了”。原因:java.lang.ClassCastException:android.widget.FrameLayout无法转换为com.google.android.gms.maps.mapview该错误需要太多解释..请您作为新问题提问。。
mMapView = (MapView) v.findViewById(R.id.map);
<fragment
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment" />