这是我的活动代码
package com.example1.heartconnect;
import android.location.Location;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
public class Maps extends FragmentActivity {
GoogleMap map;
@Override
protected void onCreate(Bundle arg0) {
// TODO Auto-generated method stub
super.onCreate(arg0);
setContentView(R.layout.maps);
map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.gmap)).getMap();
map.setMyLocationEnabled(true);
map.setMapType(map.MAP_TYPE_NORMAL);
Location loc = map.getMyLocation();
double lat = loc.getLatitude();
double lon = loc.getLongitude();
LatLng position = new LatLng(lat, lon);
Marker marker = map.addMarker(new MarkerOptions()
.title("Your Location")
.icon(BitmapDescriptorFactory
.defaultMarker(BitmapDescriptorFactory.HUE_AZURE))
.position(position));
map.moveCamera(CameraUpdateFactory.newLatLngZoom(position, 10));
}
}
这是XML文件
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<fragment
android:id="@+id/gmap"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:name="com.google.android.gms.maps.SupportMapFragment"/>
</LinearLayout>
这是清单文件
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example1.heartconnect"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<permission
android:name="com.example1.heartconnect.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="com.example1.heartconnect.permission.MAPS_RECEIVE"/>
<uses-permission android:name="android.permission.READ_CONTACTS"/>
<uses-permission android:name="android.permission.RECEIVE_SMS"/>
<uses-permission android:name="android.permission.READ_SMS"/>
<uses-permission android:name="android.permission.SEND_SMS"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<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-feature
android:glEsVersion="0x00020000"
android:required="true"/>
<application
android:allowBackup="true"
android:icon="@drawable/heart_connect"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<uses-library android:name="com.google.android.maps" />
<activity
android:name="com.example1.heartconnect.MainActivity"
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="MyCircle"></activity>
<activity android:name="Validate"></activity>
<activity android:name="DisplayContacts"></activity>
<activity android:name="Maps"></activity>
<receiver android:name=".SMSBroadcastReceiver">
<intent-filter>
<action android:name="android.provider.telephony.SMS_RECEIVED"></action>
</intent-filter>
</receiver>
<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="AIzaSyDUFZIRGsVVpvJxHvjjoUV4G44-43JTnEw"/>
</application>
</manifest>
当我删除这两行并提供Latittude&amp;手动经度,应用程序工作,我能够在LatLng上看到带有标记的裸谷歌地图
double lat = loc.getLatitude();
double lon = loc.getLongitude();
我也试图通过以下方式找到当前位置:
LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
Criteria criteria = new Criteria();
String provider = locationManager.getBestProvider(criteria, true);
Location location = locationManager.getLastKnownLocation(provider);
但是应用程序也崩溃了。 Plz任何人都可以建议我进行必要的修改,这样我就可以在地图上看到我当前的位置......提前Thnxx:)
答案 0 :(得分:2)
这是在地图上获取当前位置的代码。
public class ShowMap extends FragmentActivity implements LocationListener{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_show_location_map);
getMap();
}
public void getMap(){
int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getBaseContext());
// Showing status
if(status!=ConnectionResult.SUCCESS){ // Google Play Services are not available
int requestCode = 10;
Dialog dialog = GooglePlayServicesUtil.getErrorDialog(status, this, requestCode);
dialog.show();
}else { // Google Play Services are available
// Getting reference to the SupportMapFragment of activity_main.xml
SupportMapFragment fm = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
// Getting GoogleMap object from the fragment
googleMap = fm.getMap();
// Enabling MyLocation Layer of Google Map
googleMap.setMyLocationEnabled(true);
}
}
@Override
public void onLocationChanged(Location location) {
// Getting latitude of the current location
double latitude = location.getLatitude();
// Getting longitude of the current location
double longitude = location.getLongitude();
// Creating a LatLng object for the current location
LatLng latLng = new LatLng(latitude, longitude);
// Showing the current location in Google Map
googleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
// Zoom in the Google Map
googleMap.animateCamera(CameraUpdateFactory.zoomTo(15));
}
@Override
public void onProviderDisabled(String arg0) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String arg0) {
// TODO Auto-generated method stub
}
@Override
public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
// TODO Auto-generated method stub
}
你需要import google play store into your project as a library
。
并将支持v4添加到您的项目中 ,例如右键单击您的project -> select properties ->java build path -> select Libraries Tab -> click Add External JARs, and give path of your support v4 jar
。
我相信这一步会对你有帮助。
答案 1 :(得分:0)
Location loc = map.getMyLocation();
没有等到您当前的位置
请参阅示例:http://developer.xamarin.com/recipes/android/os_device_resources/gps/get_current_device_location/
另见:http://developer.android.com/training/location/retrieve-current.html