我写了以下代码来获取位置名称
package demo.gps.locname;
import java.io.IOException;
import java.util.List;
import java.util.Locale;
//import com.VertexVerveInc.GPSLocator.R;
//import com.VertexVerveInc.GPSLocator.GPSLocatorActivity.GPSLocationListener;
//import com.VertexVerveInc.GPSLocator.GPSLocatorActivity.MapOverlay;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
//import com.google.android.maps.Overlay;
//import android.app.Activity;
import android.content.Context;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
//import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;
public class GPSLocationActivity extends MapActivity {
/** Called when the activity is first created. */
private LocationManager locationManager;
private LocationListener locationListener;
private TextView tv;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationListener = new GPSLocationListener();
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0,
0, locationListener);
tv =(TextView)findViewById(R.id.tv);
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
private class GPSLocationListener implements LocationListener
{
@Override
public void onLocationChanged(Location location) {
if (location != null) {
GeoPoint point = new GeoPoint(
(int) (location.getLatitude() * 1E6),
(int) (location.getLongitude() * 1E6));
/* Toast.makeText(getBaseContext(),
"Latitude: " + location.getLatitude() +
" Longitude: " + location.getLongitude(),
Toast.LENGTH_SHORT).show();*/
// mapController.animateTo(point);
// mapController.setZoom(16);
// add marker
// MapOverlay mapOverlay = new MapOverlay();
// mapOverlay.setPointToDraw(point);
// List<Overlay> listOfOverlays = mapView.getOverlays();
// listOfOverlays.clear();
// listOfOverlays.add(mapOverlay);
String address = ConvertPointToLocation(point);
Toast.makeText(getBaseContext(), address, Toast.LENGTH_SHORT).show();
tv.setText(address);
// mapView.invalidate();
}
}
public String ConvertPointToLocation(GeoPoint point) {
String address = "";
Geocoder geoCoder = new Geocoder(
getBaseContext(), Locale.getDefault());
try {
List<Address> addresses = geoCoder.getFromLocation(
point.getLatitudeE6() / 1E6,
point.getLongitudeE6() / 1E6, 1);
if (addresses.size() > 0) {
for (int index = 0; index < addresses.get(0).getMaxAddressLineIndex(); index++)
address += addresses.get(0).getAddressLine(index) + " ";
}
}
catch (IOException e) {
e.printStackTrace();
}
return address;
}
@Override
public void onProviderDisabled(String provider) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
}
}
我收到以下错误
01-23 13:20:26.103: W/dalvikvm(231): Unable to resolve superclass of Ldemo/gps/locname/GPSLocationActivity; (15)
01-23 13:20:26.142: W/dalvikvm(231): Link of class 'Ldemo/gps/locname/GPSLocationActivity;' failed
01-23 13:20:26.142: D/AndroidRuntime(231): Shutting down VM
01-23 13:20:26.142: W/dalvikvm(231): threadid=3: thread exiting with uncaught exception (group=0x4001aa28)
01-23 13:20:26.142: E/AndroidRuntime(231): Uncaught handler: thread main exiting due to uncaught exception
01-23 13:20:26.173: E/AndroidRuntime(231): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{demo.gps.locname/demo.gps.locname.GPSLocationActivity}: java.lang.ClassNotFoundException: demo.gps.locname.GPSLocationActivity in loader dalvik.system.PathClassLoader@4376ac28
01-23 13:20:26.173: E/AndroidRuntime(231): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2324)
01-23 13:20:26.173: E/AndroidRuntime(231): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417)
01-23 13:20:26.173: E/AndroidRuntime(231): at android.app.ActivityThread.access$2100(ActivityThread.java:116)
01-23 13:20:26.173: E/AndroidRuntime(231): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
01-23 13:20:26.173: E/AndroidRuntime(231): at android.os.Handler.dispatchMessage(Handler.java:99)
01-23 13:20:26.173: E/AndroidRuntime(231): at android.os.Looper.loop(Looper.java:123)
01-23 13:20:26.173: E/AndroidRuntime(231): at android.app.ActivityThread.main(ActivityThread.java:4203)
01-23 13:20:26.173: E/AndroidRuntime(231): at java.lang.reflect.Method.invokeNative(Native Method)
01-23 13:20:26.173: E/AndroidRuntime(231): at java.lang.reflect.Method.invoke(Method.java:521)
01-23 13:20:26.173: E/AndroidRuntime(231): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
01-23 13:20:26.173: E/AndroidRuntime(231): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549)
01-23 13:20:26.173: E/AndroidRuntime(231): at dalvik.system.NativeStart.main(Native Method)
01-23 13:20:26.173: E/AndroidRuntime(231): Caused by: java.lang.ClassNotFoundException: demo.gps.locname.GPSLocationActivity in loader dalvik.system.PathClassLoader@4376ac28
01-23 13:20:26.173: E/AndroidRuntime(231): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
01-23 13:20:26.173: E/AndroidRuntime(231): at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
01-23 13:20:26.173: E/AndroidRuntime(231): at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
01-23 13:20:26.173: E/AndroidRuntime(231): at android.app.Instrumentation.newActivity(Instrumentation.java:1097)
01-23 13:20:26.173: E/AndroidRuntime(231): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2316)
01-23 13:20:26.173: E/AndroidRuntime(231): ... 11 more
01-23 13:20:26.203: I/dalvikvm(231): threadid=7: reacting to signal 3
01-23 13:20:26.203: E/dalvikvm(231): Unable to open stack trace file '/data/anr/traces.txt': Permission denied
的Manifest.xml
<uses-sdk android:minSdkVersion="4" />
<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" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".GPSLocationActivity"
android:label="@string/app_name" >
<uses-library android:name="com.google.android.maps" />
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
答案 0 :(得分：4)
<uses-library android:name="com.google.android.maps" />
应包含在<application>节点中，而不是<activity>节点中。这应该可以解决问题，因为到目前为止，您还没有请求地图权限。
答案 1 :(得分：1)
嘿，你只需使用此代码Android Location based services
在此代码中，您将LocationManager.GPS_PROVIDER更改为LocationManager.Network_PROVIDER.
一切顺利