一个android的规划导航路径的实例.zip_android_导航_导航路径_路径规划

package irdc.ex09_07; import java.util.List; import java.util.Locale; import android.content.Context; import android.content.Intent; import android.location.Address; import android.location.Criteria; import android.location.Geocoder; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.net.Uri; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import com.google.android.maps.GeoPoint; import com.google.android.maps.MapActivity; import com.google.android.maps.MapController; import com.google.android.maps.MapView; public class EX09_07 extends MapActivity { private TextView mTextView01; private LocationManager mLocationManager01; private String strLocationProvider = ""; private Location mLocation01; private MapController mMapController01; private MapView mMapView01; private Button mButton01,mButton02,mButton03; private EditText mEditText01; private int intZoomLevel=0; private GeoPoint fromGeoPoint, toGeoPoint; @Override protected void onCreate(Bundle icicle) { // TODO Auto-generated method stub super.onCreate(icicle); setContentView(R.layout.main); mTextView01 = (TextView)findViewById(R.id.myTextView1); mEditText01 = (EditText)findViewById(R.id.myEditText1); mEditText01.setText ( getResources().getText(R.string.str_default_address).toString() ); /* 建立MapView对象 */ mMapView01 = (MapView)findViewById(R.id.myMapView1); mMapController01 = mMapView01.getController(); // 设定MapView的显示选项（卫星、街道） mMapView01.setSatellite(true); // 放大的层级 intZoomLevel = 15; mMapController01.setZoom(intZoomLevel); /* 建立LocationManager对象取得系统LOCATION服务 */ mLocationManager01 = (LocationManager)getSystemService(Context.LOCATION_SERVICE); /* * 自订函数，存取Location Provider， * 并将之储存在strLocationProvider当中 */ getLocationProvider(); /* 传入Location对象，显示于MapView */ fromGeoPoint = getGeoByLocation(mLocation01); refreshMapViewByGeoPoint(fromGeoPoint, mMapView01, intZoomLevel); /* 建立LocationManager对象，监听Location变更时事件，更新MapView */ mLocationManager01.requestLocationUpdates (strLocationProvider, 2000, 10, mLocationListener01); mButton01 = (Button)findViewById(R.id.myButton1); mButton01.setOnClickListener(new Button.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub if(mEditText01.getText().toString()!="") { /* 取得User要前往地址的GeoPoint对象 */ toGeoPoint = getGeoByAddress(mEditText01.getText().toString()); /* 路径规划Intent */ Intent intent = new Intent(); intent.setAction(android.content.Intent.ACTION_VIEW); /* 传入路径规划所需要的地标地址 */ intent.setData ( Uri.parse("http://maps.google.com/maps?f=d&saddr="+ GeoPointToString(fromGeoPoint)+ "&daddr="+GeoPointToString(toGeoPoint)+ "&hl=tw") ); startActivity(intent); } } }); /* 放大地图 */ mButton02 = (Button)findViewById(R.id.myButton2); mButton02.setOnClickListener(new Button.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub intZoomLevel++; if(intZoomLevel>mMapView01.getMaxZoomLevel()) { intZoomLevel = mMapView01.getMaxZoomLevel(); } mMapController01.setZoom(intZoomLevel); } }); /* 缩小地图 */ mButton03 = (Button)findViewById(R.id.myButton3); mButton03.setOnClickListener(new Button.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub intZoomLevel--; if(intZoomLevel<1) { intZoomLevel = 1; } mMapController01.setZoom(intZoomLevel); } }); } /* 捕捉当手机GPS坐标更新时的事件 */ public final LocationListener mLocationListener01 = new LocationListener() { @Override public void onLocationChanged(Location location) { // TODO Auto-generated method stub /* 当手机收到位置变更时，将location传入getMyLocation */ mLocation01 = location; fromGeoPoint = getGeoByLocation(location); refreshMapViewByGeoPoint(fromGeoPoint, mMapView01, intZoomLevel); } @Override public void onProviderDisabled(String provider) { // TODO Auto-generated method stub mLocation01 = null; } @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 } }; /* 传入Location对象，取回其GeoPoint对象 */ private GeoPoint getGeoByLocation(Location location) { GeoPoint gp = null; try { /* 当Location存在 */ if (location != null) { double geoLatitude = location.getLatitude()*1E6; double geoLongitude = location.getLongitude()*1E6; gp = new GeoPoint((int)geoLatitude, (int)geoLongitude); } } catch(Exception e) { e.printStackTrace(); } return gp; } /* 输入地址，取得其GeoPoint对象 */ private GeoPoint getGeoByAddress(String strSearchAddress) { GeoPoint gp = null; try { if(strSearchAddress!="") { Geocoder mGeocoder01 = new Geocoder (EX09_07.this, Locale.getDefault()); List<Address> lstAddress = mGeocoder01.getFromLocationName (strSearchAddress, 1); if (!lstAddress.isEmpty()) { Address adsLocation = lstAddress.get(0); double geoLatitude = adsLocation.getLatitude()*1E6; double geoLongitude = adsLocation.getLongitude()*1E6; gp = new GeoPoint((int)geoLatitude, (int)geoLongitude); } } } catch (Exception e) { e.printStackTrace(); } return gp; } /* 传入geoPoint更新MapView里的Google Map */ public static void refreshMapViewByGeoPoint (GeoPoint gp, MapView mapview, int zoomLevel) { try { mapview.displayZoomControls(true); MapController myMC = mapview.getController(); myMC.animateTo(gp); myMC.setZoom(zoomLevel); mapview.setSatellite(false); } catch(Exception e) { e.printStackTrace(); } } /* 传入经纬度更新MapView里的Google Map */ public static void refreshMapViewByCode (double latitude, double longitude, MapView mapview, int zoomLevel) { try { GeoPoint p = new GeoPoint((int)latitude, (int)longitude); mapview.displayZoomControls(true); MapController myMC = mapview.getController(); myMC.animateTo(p); myMC.setZoom(zoomLevel); mapview.setSatellite(false); } catch(Exception e) { e.printStackTrace(); } } /* 将GeoPoint里的经纬度以String,String回传 */ private String GeoPointToString(GeoPoint gp) { String strReturn=""; try { /* 当Location存在 */ if (gp != null) { double geoLatitude = (int)gp.getLatitudeE6()/1E6; double geoLongitude = (int)gp.getLongitudeE6()/1E6; strReturn = String.valueOf(geoLatitude)+","+ String.valueOf(geoLongitude); } } catch(Exception e) { e.printStackTrace(); } return strReturn; } /* 取得