在android中查找当前位置（基于图像的搜索应用程序）

如果点击“查找当前位置”按钮，它会显示“对不起！强制关闭”。我想显示经度和纬度。 GPS在我的手机中打开。它仍然显示错误信息。我的代码有什么问题？在android中查找当前位置（基于图像的搜索应用程序）

public class CurrentLocation extends Activity { 

private static final long MINIMUM_DISTANCE_CHANGE_FOR_UPDATES = 1; // in Meters 
private static final long MINIMUM_TIME_BETWEEN_UPDATES = 1000; // in Milliseconds 

protected LocationManager locationManager; 

protected Button retrieveLocationButton; 
DBAdapter dbA = new DBAdapter (CurrentLocation.this); 

@Override 
public void onCreate(Bundle savedInstanceState) { 

    super.onCreate(savedInstanceState); 
    setContentView(R.layout.curloc); 
    Button bacButton = (Button)findViewById(R.id.bk); 

    bacButton.setOnClickListener(new OnClickListener() { 
     public void onClick(View v) { 
      Intent explicitIntent = new Intent(CurrentLocation.this,ImageSearchActivity.class); 
      startActivity(explicitIntent); 
     } 
    }); 

    retrieveLocationButton = (Button) findViewById(R.id.retrieve_location_button); 
    locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); 
    locationManager.requestLocationUpdates(
      LocationManager.GPS_PROVIDER, 
      MINIMUM_TIME_BETWEEN_UPDATES, 
      MINIMUM_DISTANCE_CHANGE_FOR_UPDATES, 
      new MyLocationListener() 
    ); 

    retrieveLocationButton.setOnClickListener(new OnClickListener() { 
     public void onClick(View v) { 
      showCurrentLocation(); 
     } 
    });   

}  

protected void showCurrentLocation() { 

    Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER); 

    if (location != null) { 
     String message = String.format("Current Location \n Longitude: %1$s \n Latitude: %2$s", 
      location.getLongitude(), location.getLatitude()); 
     double longit = location.getLongitude(); 
     double latid = location.getLatitude(); 

     try { 
      dbA.open(); 
      dbA.Insert(longit,latid); 
      dbA.close(); 
     } catch (Exception e) { 
      Toast.makeText(CurrentLocation.this,e.getMessage(), Toast.LENGTH_LONG).show(); 
     } 
     Toast.makeText(CurrentLocation.this, message,Toast.LENGTH_LONG).show(); 
    } 
} 

private class MyLocationListener implements LocationListener { 

    public void onLocationChanged(Location location) { 
     String message = String.format("New Location \n Longitude: %1$s \n Latitude: %2$s", 
      location.getLongitude(), location.getLatitude()); 
     Toast.makeText(CurrentLocation.this, message, Toast.LENGTH_LONG).show(); 
     Toast.makeText(CurrentLocation.this, "Location Stored Successfully", Toast.LENGTH_LONG).show(); 
    } 

    public void onStatusChanged(String s, int i, Bundle b) { 

     Toast.makeText(CurrentLocation.this, "Provider status changed", 
     Toast.LENGTH_LONG).show(); 
    } 

    public void onProviderDisabled(String s) { 
     Toast.makeText(CurrentLocation.this,"Provider disabled by the user. GPS turned off", 
      Toast.LENGTH_LONG).show(); 
    } 

    public void onProviderEnabled(String s) { 
     Toast.makeText(CurrentLocation.this, "Provider enabled by the user. GPS turned on", 
      Toast.LENGTH_LONG).show(); 
    } 
} 

} // end of class

来源

2012-10-18 user1755395

分享logcat信息 –

对不起！我没有得到你。我应该分享所有的logcat信息吗？ – user1755395

与您相关的logcat信息错误。 –

调用此函数中说GetCurrentLocation

try { 
    gps_enabled=lmGps.isProviderEnabled(LocationManager.GPS_PROVIDER); 
} catch(Exception ex) { 
} 

try { 
    lmGps.requestLocationUpdates(LocationManager.GPS_PROVIDER,0,0,gpsLocationListener); 
} catch(Exception ex){ 
}

调用gpsLocationListener这样，这将返回您的当前位置，做任何你想用它。

来源

2012-10-18 07:21:11

谢谢你！ :)我会试试这:) – user1755395

在android中查找当前位置（基于图像的搜索应用程序）

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