Android Open Source - QuestCompass Location Pick Activity

From Project

Back to project page QuestCompass.

License

The source code is released under:

Apache License

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Java Source Code

package de.renard.radar.map;
//from w w  w .j  a  va2  s.c o  m
import android.content.Intent;
import android.location.Location;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.View;
import android.widget.Button;

import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMap.OnCameraChangeListener;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.LatLng;

import de.renard.radar.R;
import de.renard.radar.RadarActivity;

public class LocationPickActivity extends FragmentActivity {
  public static final String EXTRA_LATLNG = "latlong";

  private GoogleMap mMap;

  private LocationOverlay overlay;

  @Override
  protected void onCreate(Bundle arg0) {
    super.onCreate(arg0);
    setContentView(R.layout.location_pick_activity);
    setUpMapIfNeeded();
    overlay = (LocationOverlay) findViewById(R.id.location_overlay);

    Button okButton = (Button) findViewById(R.id.button_pick_location);
    okButton.setOnClickListener(new View.OnClickListener() {

      @Override
      public void onClick(View v) {
        CameraPosition cameraPosition = mMap.getCameraPosition();

        Intent i = new Intent();
        i.putExtra(EXTRA_LATLNG, cameraPosition.target);
        setResult(RESULT_OK, i);
        finish();
      }
    });

  }

  @Override
  protected void onResume() {
    super.onResume();
    setUpMapIfNeeded();
  }

  private void setUpMap() {
    mMap.setOnCameraChangeListener(new OnCameraChangeListener() {

      @Override
      public void onCameraChange(CameraPosition position) {
        overlay.updateCameraPostion(position);
      }
    });

    mMap.setMyLocationEnabled(true);
    if (getIntent() != null) {
      Location location = getIntent().getParcelableExtra(RadarActivity.CURRENT_LOCATION);
      if (location!=null){
        LatLng latLng = new LatLng(location.getLatitude(),location.getLongitude());
        mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, 14.0f));
      }

    }

  }

  private void setUpMapIfNeeded() {
    // Do a null check to confirm that we have not already instantiated the
    // map.
    if (mMap == null) {
      // Try to obtain the map from the SupportMapFragment.
      mMap = ((SupportMapFragment) getSupportFragmentManager()
          .findFragmentById(R.id.map)).getMap();
      // Check if we were successful in obtaining the map.
      if (mMap != null) {
        setUpMap();
      }
    }
  }

}

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