我正在尝试在android studio中实现OpenStreetMap。我成功添加了库,如下所示。
这是我的MainActivity:
package com.example.re.osm;
import org.osmdroid.util.GeoPoint;
import org.osmdroid.views.MapController;
import org.osmdroid.views.MapView;
import android.app.Activity;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
public class MainActivity extends Activity {
private MapView myOpenMapView;
private MapController myMapController;
LocationManager locationManager;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myOpenMapView = (MapView)findViewById(R.id.openmapview);
myOpenMapView.setBuiltInZoomControls(true);
myMapController = myOpenMapView.getController();
myMapController.setZoom(12);
locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
//for demo, getLastKnownLocation from GPS only, not from NETWORK
Location lastLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if(lastLocation != null){
updateLoc(lastLocation);
}
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, myLocationListener);
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, myLocationListener);
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
locationManager.removeUpdates(myLocationListener);
}
private void updateLoc(Location loc){
GeoPoint locGeoPoint = new GeoPoint(loc.getLatitude(), loc.getLongitude());
myMapController.setCenter(locGeoPoint);
myOpenMapView.invalidate();
}
private LocationListener myLocationListener
= new LocationListener(){
@Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
updateLoc(location);
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
};
}
这是我的清单文件:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.re.osm"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="10" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<application
android:icon="@drawable/ic_launcher"
android:label="OSM" >
<activity
android:name=".MainActivity"
android:label="OSM" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
但是当我运行应用程序时,我会看到错误:
&#34;调用需要用户可能拒绝的权限:代码应明确检查权限是否可用(具有检查权限)或明确处理潜在的安全例外&#34;
我该如何解决这个问题?我应该遵循哪些步骤?
任何想法都表示赞赏?
由于