Android Open Source - elf.map.android Main Activity

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License

The source code is released under:
This is free and unencumbered software released into the public domain. Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a co...
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Java Source Code

/*
 * License: Public Domain/*  w  w w .j a va 2s  . co m*/
 * Author: elf
 * EMail: elf198012@gmail.com
 */

package elf.map;


import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnMultiChoiceClickListener;
import android.content.SharedPreferences;
import android.graphics.PointF;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.Environment;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.RelativeLayout.LayoutParams;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.ZoomControls;

public class MainActivity extends Activity{
  private boolean _bCenter = false;
  private PointF _ptfGps = new PointF();

  private Map _map;
  private MapStyle _msMapStyle = new MapStyle();
  private MapPainter _mpMapPainter = new MapPainter();
  private MapView _mvMap;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    //Map
    String strMapFile = Environment.getExternalStorageDirectory().getAbsolutePath();
    strMapFile += "/elf/map";
    _map = new Map(strMapFile);

    //PixelMap
    _mpMapPainter.SetMap(_map);
    _mpMapPainter.SetStyle(_msMapStyle);
    //    _mpMapPainter.SetLevel(10);

    //MapView
    _mvMap = new MapView(this, _mpMapPainter);
    _mvMap.SetLevel(10);
//    _mvMap.SetCenter(_map.Center());
    
    setContentView(R.layout.activity_main);
    FrameLayout fl = (FrameLayout)findViewById(R.id.rlMainLayout);
    fl.addView(_mvMap, 0);

//    if(savedInstanceState != null){
//      _mvMap.SetGps(savedInstanceState.getFloat("Longitude", 0.0f), savedInstanceState.getFloat("Latitude", 0.0f));
//      //      _mvMap.setGps(2.0f, 2.0f);
//    }
//    else{
      SharedPreferences pref = this.getPreferences(Activity.MODE_PRIVATE);
      _mvMap.SetGps(pref.getFloat("Longitude", 0.0f), pref.getFloat("Latitude", 0.0f));
      //      _mvMap.setGps(1.0f, 1.0f);
//    }

    Button btnMapCenter = (Button)findViewById(R.id.btnMapCenter);
    btnMapCenter.setOnClickListener(_oclMapCenterListener); 

    Button btnGps = (Button)findViewById(R.id.btnGps);
    btnGps.setOnClickListener(_oclGpsListener); 

    ZoomControls zcsLevel = (ZoomControls)findViewById(R.id.zcsLevel);
    zcsLevel.setOnZoomInClickListener(_oclZoomInListener);
    zcsLevel.setOnZoomOutClickListener(_oclZoomOutListener);

    LocationManager lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
    Location location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
    if(location != null){
      _bCenter = true;
      float fX = (float)location.getLongitude();
      float fY = (float)location.getLatitude();
      _ptfGps.set(fX, fY);
      _mvMap.SetGps(fX, fY);
    }

    lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 5000, 0, new LocationListener(){
      @Override
      public void onLocationChanged(Location location) {
        // TODO Auto-generated method stub
        float fX = (float)location.getLongitude();
        float fY = (float)location.getLatitude();
        _ptfGps.set(fX, fY);

        if(!_bCenter){
          _bCenter = true;
          _mvMap.SetCenter(fX, fY);
        }
        _mvMap.SetGps(fX, fY);
        _mvMap.invalidate();
        //        long id = Thread.currentThread().getId();
        //        id = 0;
      }

      @Override
      public void onProviderDisabled(String provider) {
        // TODO Auto-generated method stub

      }

      @Override
      public void onProviderEnabled(String provider) {
        // TODO Auto-generated method stub
      }

      @Override
      public void onStatusChanged(String provider, int status, Bundle extras) {
        // TODO Auto-generated method stub

      }});
  }

  private OnClickListener _oclMapCenterListener = new OnClickListener() {
    public void onClick(View v) {
//      _mvMap.SetLevel(10);
      ShowVisibilityDialog(_mvMap.GetVisibleTypes());
    }
  };

  private OnClickListener _oclGpsListener = new OnClickListener() {
    public void onClick(View v) {
      _mvMap.Home();
      //      _mvMap.invalidate();
    }
  };

  private OnClickListener _oclZoomOutListener = new OnClickListener() {
    public void onClick(View v) {
      _mvMap.DecreaseLevel();
      //      _mvMap.invalidate();
    }
  };

  private OnClickListener _oclZoomInListener = new OnClickListener() {
    public void onClick(View v) {
      _mvMap.IncreaseLevel();
    }
  };

  //private boolean _bDown = false;
  private PointF _ptfLastPoint = new PointF();

  @Override
  public boolean onTouchEvent(MotionEvent event) {
    // TODO Auto-generated method stub
    float x = event.getX();
    float y = event.getY();
    switch (event.getAction()) {
    case MotionEvent.ACTION_DOWN:
      _ptfLastPoint.set(x, y);
      break;
    case MotionEvent.ACTION_UP:
      break;
    case MotionEvent.ACTION_MOVE:{
      float fOffsetX = x - _ptfLastPoint.x;
      float fOffsetY = y - _ptfLastPoint.y;
      if(fOffsetX >= 10.0f || fOffsetX <= -10.0f || fOffsetY >= 10.0f || fOffsetY <= -10.0f){
        _mvMap.PixelOffset(-(int)fOffsetX, -(int)fOffsetY);
//        _mvMap.invalidate();
        _ptfLastPoint.set(x, y);
      }
    }break;
    }
    return super.onTouchEvent(event);
  }

  @Override
  protected void onPause() {
    // TODO Auto-generated method stub
    super.onPause();
//    if(isFinishing()){
//      _exitDialog = new AlertDialog.Builder(this)
//      .setTitle("Save current GPS position?")
//      .setPositiveButton("Yes",new DialogInterface.OnClickListener() {
//        @Override  
//        public void onClick(DialogInterface dialog, int which) {
//          SharedPreferences pref = getPreferences(Activity.MODE_PRIVATE);
//          SharedPreferences.Editor editor = pref.edit();
//          editor.putFloat("Longitude", _ptfGps.x);
//          editor.putFloat("Latitude", _ptfGps.y);
//          editor.commit();
//        }
//      })
//      .setNegativeButton("No", null)
//      .show();
//    }
  }

  @Override
  protected void onRestoreInstanceState(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onRestoreInstanceState(savedInstanceState);
//    _mvMap.SetGps(savedInstanceState.getFloat("Longitude", 0.0f), savedInstanceState.getFloat("Latitude", 0.0f));
  }

  @Override
  protected void onSaveInstanceState(Bundle outState) {
    // TODO Auto-generated method stub
    super.onSaveInstanceState(outState);
//    outState.putFloat("Longitude", _ptfGps.x);
//    outState.putFloat("Latitude", _ptfGps.y);
  }

  public void ShowVisibilityDialog(boolean[] szVisibleTypes){
    final String[] szItems = {"Location", "Water way", "Water", "Way", "Area"};    

    new AlertDialog.Builder(this)
    .setTitle("Select visible types")
    .setMultiChoiceItems(szItems, szVisibleTypes, new OnMultiChoiceClickListener(){

      @Override
      public void onClick(DialogInterface dialog, int which,
          boolean isChecked) {
        // TODO Auto-generated method stub
        _mvMap.SetVisibleType(Map.ObjectType.values()[which], isChecked);

        _mvMap.Redraw();
      }    
    })   
    .setPositiveButton("Ok",new DialogInterface.OnClickListener() {

      @Override  
      public void onClick(DialogInterface dialog, int which) {
      }
    })
    //    .setNegativeButton("Cancel", null)
    .show();
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // TODO Auto-generated method stub
    //    return super.onCreateOptionsMenu(menu);
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.layout.menu, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    // TODO Auto-generated method stub
    switch(item.getItemId()){
    case R.id.menu_filter:
      ShowVisibilityDialog(_mvMap.GetVisibleTypes());
      return true;
      //      break;
    }
    return super.onOptionsItemSelected(item);
  }

  @Override
  public boolean onKeyDown(int keyCode, KeyEvent event) {
    // TODO Auto-generated method stub
    if(keyCode == KeyEvent.KEYCODE_BACK){
      new AlertDialog.Builder(this)
      .setTitle("Save current GPS position?")
      .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
        @Override  
        public void onClick(DialogInterface dialog, int which) {
          SharedPreferences pref = getPreferences(Activity.MODE_PRIVATE);
          SharedPreferences.Editor editor = pref.edit();
          editor.putFloat("Longitude", _ptfGps.x);
          editor.putFloat("Latitude", _ptfGps.y);
          editor.commit();
          finish();
        }
      })
      .setNegativeButton("No", new DialogInterface.OnClickListener() {
        @Override  
        public void onClick(DialogInterface dialog, int which) {
          SharedPreferences pref = getPreferences(Activity.MODE_PRIVATE);
          SharedPreferences.Editor editor = pref.edit();
          editor.putFloat("Longitude", 0.0f);
          editor.putFloat("Latitude", 0.0f);
          editor.commit();
          finish();
        }
      })
      .show();
      
    }

    return super.onKeyDown(keyCode, event);
  }
  
  static{
    System.loadLibrary("map");
  }
}
Java Source Code List

elf.map.Area.java
elf.map.Line.java
elf.map.Location.java
elf.map.MainActivity.java
elf.map.MapPainter.java
elf.map.MapStyle.java
elf.map.MapView.java
elf.map.Map.java
elf.map.NamedLocation.java
elf.map.Point.java
elf.map.Rect.java
elf.map.Size.java
elf.map.Tile.java
elf.map.WaterWay.java
elf.map.Water.java
elf.map.Way.java