package se.nekotronic.gpstest3;

import java.util.Timer;
import java.util.TimerTask;

import android.app.Activity;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.text.format.Time;
import android.widget.TextView;

public class GPSTest3Activity extends Activity {
	private TextView texten = null;
	private LocationManager locationManager = null;
	private int starts = 0;
	private Timer theTicker = null;
	private TimerTask theTimerTask = null;
	private String waitingText = null;
	
	private void print(String text) {
		Time now = new Time();
		now.setToNow();
		String timeString = now.format("%H:%M:%S");
		texten.setText(timeString + ": " + text + "\n" + texten.getText());
		texten.invalidate();
		texten.postInvalidate();
		
		if (waitingText != null) {
			String toPrint = waitingText;
			waitingText = null;
			print(toPrint);
		}
			
	}

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        texten = new TextView(this);
        texten.setText("");
        ++starts;
        print("onCreate (" + starts + ")");
        setContentView(texten);
        
		locationManager =
			(LocationManager) this.getSystemService(Context.LOCATION_SERVICE);

		// Define a listener that responds to location updates
		LocationListener locationListener = new LocationListener() {
		    public void onLocationChanged(Location location) {
		    	// Called when a new location is found by the network location provider.
		    	print("onLocationChanged");
		    	makeUseOfNewLocation(location);
		    }

			public void onStatusChanged(String provider, int status, Bundle extras) {
		    	print("onStatusChanged");
		    }

		    public void onProviderEnabled(String provider) {
		    	print("onProviderEnabled");
		    }

		    public void onProviderDisabled(String provider) {
		    	print("onProviderDisabled");
		    }
		};

		try {
			// Register the listener with the Location Manager to receive location updates
			locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
		}
		catch (Exception e) {
			print("requestLocationUpdates failed: " + e);
		}

		// theTicker = new Timer();
		theTimerTask = new TimerTask() {
			@Override
			public void run() {
				try {
					
					Runnable r = new Runnable() {
						@Override
						public void run() {
							print("Tick!");
						}
					};
					
					texten.getHandler().post(r);
					// print("Tick!"); -- ger CalledFromWrongThreadException
					// texten.setText("X!"); -- ger CalledFromWrongThreadException
				}
				catch (Exception e) {
					waitingText = "run-print failed: " + e;
				}
			}
		};
		// theTicker.schedule(theTimerTask, 3000, 1000);
    } // onCreate 

    private void makeUseOfNewLocation(Location location) {
    	double longitude = location.getLongitude();
    	double latitude = location.getLatitude();
    	double accuracy = location.getAccuracy();
    	double altitude= location.getAltitude();
    	print("Long " + longitude +
    		  ", lat " + latitude +
    		  ", accuracy " + accuracy +
    		  ", alt " + altitude);
	}

	@Override
	protected void onPause() {
		print("onPause");
		theTicker.cancel();
		theTicker = null;
		super.onPause();
	}

	@Override
	protected void onRestart() {
		print("onRestart");
		super.onRestart();
	}

	@Override
	protected void onResume() {
		print("onResume");
		try {
			theTicker = new Timer();
			
			
			theTimerTask = new TimerTask() {
				@Override
				public void run() {
					try {
						
						Runnable r = new Runnable() {
							@Override
							public void run() {
								print("Tick!");
							}
						};
						
						texten.getHandler().post(r);
						// print("Tick!"); -- ger CalledFromWrongThreadException
						// texten.setText("X!"); -- ger CalledFromWrongThreadException
					}
					catch (Exception e) {
						waitingText = "run-print failed: " + e;
					}
				}
			};
			
			
			theTicker.schedule(theTimerTask, 3000, 1000);
		}
		catch (Exception e) {
			print("Resume failed: e = " + e);
		}
		super.onResume();
	}

	@Override
	protected void onStart() {
		print("onStart");
		super.onStart();
	}

	@Override
	protected void onStop() {
		print("onStop");
		super.onStop();
	}

}