在android中查找當前位置（基於圖像的搜索應用程序）

如果點擊「查找當前位置」按鈕，它會顯示「對不起！強制關閉」。我想顯示經度和緯度。 GPS在我的手機中打開。它仍然顯示錯誤信息。我的代碼有什麼問題？在android中查找當前位置（基於圖像的搜索應用程序）

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

來源

2012-10-18 user1755395

分享logcat信息 –

對不起！我沒有得到你。我應該分享所有的logcat信息嗎？ – user1755395

與您相關的logcat信息錯誤。 –

調用此函數中說GetCurrentLocation

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

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

調用gpsLocationListener這樣，這將返回您的當前位置，做任何你想用它。

來源

2012-10-18 07:21:11

謝謝你！ :)我會試試這:) – user1755395

在android中查找當前位置（基於圖像的搜索應用程序）

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