用高德地图做的驾车路径规划及在上面显示实时运行情况
此处是为了打车软件路径显示效果而做的一个demo，如下图所示：
上图中起点是定位点坐标，由于是实时导航GPS的时候所用，在移动情况下才会显示出小车在规划好的路径上面行驶（即蓝色线上），若不按线上的移动则会重新规划路径，由于没有对坐标点进行保存，所以移动效果是跳动的，不连贯。由于接触的接触地图的时间比较的端，所以有些功能还不是很完善，在项目完成后会对代码进行相应的操作。
其实现的部分主要代码如下（代码中对GPS连接及网络连接做了相应的判断）：
/**
* 定位成功后回调函数
*/
@Override
public void onLocationChanged(AMapLocation amapLocation) {
if (mListener != null && amapLocation != null) {
if (amapLocation != null && amapLocation.getErrorCode() == 0) {
mListener.onLocationChanged(amapLocation);// 显示系统小蓝点
mLatitude = amapLocation.getLatitude();
mLongitude = amapLocation.getLongitude();
aMap.moveCamera(CameraUpdateFactory.changeLatLng(new LatLng(mLatitude, mLongitude)));
aMap.moveCamera(CameraUpdateFactory.zoomTo(16));
startPoint = new LatLonPoint(mLatitude, mLongitude);
mStartTxt.setText(amapLocation.getPoiName());
speed = amapLocation.getSpeed();
sp = (int) amapLocation.getSpeed();
Log.e("????????????????", "asihdfoiash" + sp);
}
} else {
String errText = "定位失败," + amapLocation.getErrorCode() + ": " + amapLocation.getErrorInfo();
Log.e("AmapErr", errText);
}
}
/**
* 激活定位
*/
@Override
public void activate(OnLocationChangedListener listener) {
mListener = listener;
if (mLocationClient == null) {
mLocationClient = new AMapLocationClient(this);
mLocationOption = new AMapLocationClientOption();
//设置定位监听
mLocationClient.setLocationListener(this);
//设置为高精度定位模式
mLocationOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Hight_Accuracy);
mLocationOption.setInterval(5000);// 注意设置合适的定位时间的间隔（最小间隔支持为2000ms）
// // 设置是否允许模拟位置,默认为false，不允许模拟位置
// mLocationOption.setMockEnable(true);
//设置定位参数
mLocationClient.setLocationOption(mLocationOption);
// 此方法为每隔固定时间会发起一次定位请求，为了减少电量消耗或网络流量消耗，
// 在定位结束后，在合适的生命周期调用onDestroy()方法
// 在单次定位情况下，定位无论成功与否，都无需调用stopLocation()方法移除请求，定位sdk内部会移除
mLocationClient.startLocation();
}
}
/**
* 停止定位
*/
@Override
public void deactivate() {
mListener = null;
if (mLocationClient != null) {
mLocationClient.stopLocation();
mLocationClient.onDestroy();
}
mLocationClient = null;
}
//点击事件
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.end_address_txt:
Intent intentEnd = new Intent(this, AddressChildActivity.class);
startActivityForResult(intentEnd, 1);
break;
case R.id.navi_road_btn:
// initGPS();
searchRouteResult(startPoint, endPoint);
// turnGPSOn();
break;
case R.id.call_navi_btn:
Intent intent = new Intent(MainActivity.this, NavigationInterfaceActivity.class);
Bundle bundle = new Bundle();
bundle.putDouble("startLatitude", startPoint.getLatitude());
bundle.putDouble("startLongitude", startPoint.getLongitude());
bundle.putDouble("endLatitude", endPoint.getLatitude());
bundle.putDouble("endLongitude", endPoint.getLongitude());
bundle.putFloat("speed", speed);
intent.putExtras(bundle);
startActivity(intent);
break;
}
}
/**
* 判断GPS是否打开，若开启状态则不做任何操作
* 若未开启状态则弹出对话框，点击取消下次继续弹出，点击确定则跳转到GPS控制界面，返回后继续后继操作
*/
private void initGPS() {
LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
// 判断GPS模块是否开启，如果没有则开启
if (!locationManager.isProviderEnabled(android.location.LocationManager.GPS_PROVIDER)) {
Toast.makeText(MainActivity.this, "请打开GPS", Toast.LENGTH_SHORT).show();
final AlertDialog.Builder dialog = new AlertDialog.Builder(this);
dialog.setTitle("请打开GPS连接");
dialog.setMessage("为方便司机更容易接到您，请先打开GPS");
dialog.setPositiveButton("设置", new android.content.DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface arg0, int arg1) {
// 转到手机设置界面，用户设置GPS
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
Toast.makeText(MainActivity.this, "打开后直接点击返回键即可，若不打开返回下次将再次出现", Toast.LENGTH_SHORT).show();
startActivityForResult(intent, 0); // 设置完成后返回到原来的界面
}
});
dialog.setNeutralButton("取消", new android.content.DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface arg0, int arg1) {
arg0.dismiss();
}
});
dialog.show();
} else {
searchRouteResult(startPoint, endPoint);//路径规划
// 弹出Toast
// Toast.makeText(TrainDetailsActivity.this, "GPS is ready",Toast.LENGTH_LONG).show();
// // 弹出对话框
// new AlertDialog.Builder(this).setMessage("GPS is ready").setPositiveButton("OK", null).show();
}
}
/**
* 判断网络连接是否已开
* true 已打开 false 未打开
*/
public static boolean isConn(Context context) {
if (context != null) {
ConnectivityManager mConnectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();
if (mNetworkInfo != null) {
return mNetworkInfo.isAvailable();
}
searchNetwork(context);//弹出提示对话框
}
return false;
}
/**
* 判断网络是否连接成功，连接成功不做任何操作
* 未连接则弹出对话框提示用户设置网络连接
*/
public static void searchNetwork(final Context context) {
//提示对话框
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("网络设置提示").setMessage("网络连接不可用,是否进行设置?").setPositiveButton("设置", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent intent = null;
//判断手机系统的版本 即API大于10 就是3.0或以上版本
if (android.os.Build.VERSION.SDK_INT > 10) {
intent = new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS);
} else {
intent = new Intent();
ComponentName component = new ComponentName("com.android.settings", "com.android.settings.WirelessSettings");
intent.setComponent(component);
intent.setAction("android.intent.action.VIEW");
}
context.startActivity(intent);
}
}).setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
}).show();
}
/**
* 强制开启GPS方法，此方法在4.0及以上版本都不能使用
*/
public void turnGPSOn() {
Intent intent = new Intent("android.location.GPS_ENABLED_CHANGE");
intent.putExtra("enabled", true);
this.sendBroadcast(intent);
String provider = Settings.Secure.getString(getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
if (!provider.contains("gps")) { //if gps is disabled
final Intent poke = new Intent();
poke.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");
poke.addCategory(Intent.CATEGORY_ALTERNATIVE);
poke.setData(Uri.parse("3"));
this.sendBroadcast(poke);
}
}
/**
* 接受 选择地址 的值
*/
private double longitude; //终点纬度
private double latitude; //终点经度
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Cantant.ADDRESSID_MAP) {
Bundle b = data.getExtras();
String address = b.getString("addressName");
longitude = b.getDouble("longitude");
latitude = b.getDouble("latitude");
Toast.makeText(this, address + "(" + longitude + "," + latitude + ")", Toast.LENGTH_SHORT).show();
endPoint = new LatLonPoint(latitude, longitude);
mEndTxt.setText(address);
} else if (resultCode == 0) {
// Toast.makeText(MainActivity.this, "请重新开始导航", Toast.LENGTH_SHORT).show();
// searchRouteResult(startPoint, endPoint);
// initGPS();
}
}
/**
* 开始搜索路径规划
*/
public void searchRouteResult(LatLonPoint startPoint, LatLonPoint endPoint) {
final RouteSearch.FromAndTo fromAndTo = new RouteSearch.FromAndTo(startPoint, endPoint);
RouteSearch.DriveRouteQuery query = new RouteSearch.DriveRouteQuery(fromAndTo, drivingMode, null, null, "");// 第一个参数表示路径规划的起点和终点，第二个参数表示驾车模式，第三个参数表示途经点，第四个参数表示避让区域，第五个参数表示避让道路
routeSearch.calculateDriveRouteAsyn(query);// 异步路径规划驾车模式查询
}
//公交路径规划
@Override
public void onBusRouteSearched(BusRouteResult busRouteResult, int i) {
}
/**
* 驾车路径规划回调接口
*/
private NaviLatLng startLL;
private NaviLatLng endLL;
@Override
public void onDriveRouteSearched(DriveRouteResult driveRouteResult, int i) {
aMap.clear();// 清理地图上的所有覆盖物
if (i == 0) {
if (driveRouteResult != null && driveRouteResult.getPaths() != null && driveRouteResult.getPaths().size() > 0) {
driveResult = driveRouteResult;
DrivePath drivePath = driveRouteResult.getPaths().get(0);
startLL = new NaviLatLng(driveRouteResult.getStartPos().getLatitude(), driveRouteResult.getStartPos().getLongitude());
endLL = new NaviLatLng(driveRouteResult.getTargetPos().getLatitude(), driveRouteResult.getTargetPos().getLongitude());
mStartPoints.add(startLL);
mEndPoints.add(endLL);
boolean isSuccess = aMapNavi.calculateDriveRoute(mStartPoints, mEndPoints, null, PathPlanningStrategy.DRIVING_DEFAULT);
if (!isSuccess) {
Toast.makeText(this, "路线计算失败,检查参数情况", Toast.LENGTH_SHORT).show();
}
DrivingRouteOverlay drivingRouteOverlay = new DrivingRouteOverlay(this, aMap, drivePath, driveRouteResult.getStartPos(), driveRouteResult.getTargetPos());
drivingRouteOverlay.removeFromMap();
drivingRouteOverlay.addToMap();
drivingRouteOverlay.zoomToSpan();
} else {
ToastUtil.show(this, R.string.no_result);
}
} else if (i == 27) {
ToastUtil.show(this, R.string.error_network);
} else if (i == 32) {
ToastUtil.show(this, R.string.error_key);
} else {
ToastUtil.show(this, getString(R.string.error_other) + i);
}
}
//步行路径规划
@Override
public void onWalkRouteSearched(WalkRouteResult walkRouteResult, int i) {
}
//地图移动事件处理
@Override
public void onCameraChange(CameraPosition cameraPosition) {
}
//地图移动完成事件处理
@Override
public void onCameraChangeFinish(CameraPosition cameraPosition) {
}
/**
* 模拟语音导航路径行驶
*/
@Override
public void onInitNaviFailure() {
Toast.makeText(this, "init navi Failed", Toast.LENGTH_SHORT).show();
}
@Override
public void onInitNaviSuccess() {
aMapNavi.calculateDriveRoute(mStartPoints, mEndPoints, null, PathPlanningStrategy.DRIVING_DEFAULT);
}
@Override
public void onStartNavi(int i) {
}
@Override
public void onTrafficStatusUpdate() {
}
@Override
public void onLocationChange(AMapNaviLocation aMapNaviLocation) {
}
@Override
public void onGetNavigationText(int i, String s) {
}
@Override
public void onEndEmulatorNavi() {
}
@Override
public void onArriveDestination() {
}
@Override
public void onCalculateRouteSuccess() {
// mRouteOverLay.removeFromMap();
AMapNaviPath naviPath = aMapNavi.getNaviPath();
aMapNavi.startNavi(1);
aMapNavi.startGPS();
if (naviPath == null) {
return;
}
// 获取路径规划线路，显示到地图上
// mRouteOverLay.setAMapNaviPath(naviPath);
// mRouteOverLay.addToMap();
mRouteOverLay.zoomToSpan();
mRouteOverLay.setEmulateGPSLocationVisible();
}
@Override
public void onCalculateRouteFailure(int i) {
}
@Override
public void onReCalculateRouteForYaw() {
aMap.clear();
searchRouteResult(startPoint, endPoint);
aMapNavi.calculateDriveRoute(mStartPoints, mEndPoints, null, PathPlanningStrategy.DRIVING_DEFAULT);
}
@Override
public void onReCalculateRouteForTrafficJam() {
aMap.clear();
searchRouteResult(startPoint, endPoint);
aMapNavi.calculateDriveRoute(mStartPoints, mEndPoints, null, PathPlanningStrategy.DRIVING_DEFAULT);
}
@Override
public void onArrivedWayPoint(int i) {
}
@Override
public void onGpsOpenStatus(boolean b) {
b = true;
}
@Override
public void onNaviInfoUpdated(AMapNaviInfo aMapNaviInfo) {
}
@Override
public void onNaviInfoUpdate(NaviInfo naviInfo) {
Toast.makeText(this, "现在的速度是：" + sp, Toast.LENGTH_SHORT).show();
CarLatLngBean bean = new CarLatLngBean();
bean.setLatitude(naviInfo.getCoord().getLatitude());
bean.setLongitude(naviInfo.getCoord().getLongitude());
list.add(bean);
initRoadData(list);
if (list.size() > 2) {
moveLooper();
} else {
return;
}
}
@Override
public void OnUpdateTrafficFacility(TrafficFacilityInfo trafficFacilityInfo) {
}
@Override
public void OnUpdateTrafficFacility(AMapNaviTrafficFacilityInfo aMapNaviTrafficFacilityInfo) {
}
@Override
public void showCross(AMapNaviCross aMapNaviCross) {
}
@Override
public void hideCross() {
}
@Override
public void showLaneInfo(AMapLaneInfo[] aMapLaneInfos, byte[] bytes, byte[] bytes1) {
Toast.makeText(this, "导航计算失败！" + aMapLaneInfos, Toast.LENGTH_SHORT).show();
}
@Override
public void hideLaneInfo() {
}
@Override
public void onCalculateMultipleRoutesSuccess(int[] ints) {
}
@Override
public void notifyParallelRoad(int i) {
}
public void initRoadData(ArrayList list) {
PolylineOptions polylineOptions = new PolylineOptions();
if (list.size() > 2) {
int counts = list.size();
for (int i = 0; i < counts; i++) {
polylineOptions.add(new LatLng(list.get(i).getLatitude(), list.get(i).getLongitude()));
}
polylineOptions.width(0);
polylineOptions.color(Color.RED);
mVirtureRoad = aMap.addPolyline(polylineOptions);
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.setFlat(true);
markerOptions.anchor(0.5f, 0.5f);
markerOptions.icon(BitmapDescriptorFactory.fromResource(R.mipmap.taxi_bearing));
markerOptions.position(polylineOptions.getPoints().get(0));
if (mMoveMarker != null)
mMoveMarker.remove();
list.clear();
mMoveMarker = aMap.addMarker(markerOptions);
mMoveMarker.showInfoWindow();
mMoveMarker.setRotateAngle((float) getAngle(0));
} else {
return;
}
}
/**
* 根据点获取图标转的角度
*/
private double getAngle(int startIndex) {
if ((startIndex + 1) >= mVirtureRoad.getPoints().size()) {
throw new RuntimeException("index out of bonds");
}
LatLng startPoint = mVirtureRoad.getPoints().get(startIndex);
LatLng endPoint = mVirtureRoad.getPoints().get(startIndex + 1);
return getAngle(startPoint, endPoint);
}
/**
* 根据两点算取图标转的角度
*/
private double getAngle(LatLng fromPoint, LatLng toPoint) {
double slope = getSlope(fromPoint, toPoint);
if (slope == Double.MAX_VALUE) {
if (toPoint.latitude > fromPoint.latitude) {
return 0;
} else {
return 180;
}
}
float deltAngle = 0;
if ((toPoint.latitude - fromPoint.latitude) * slope < 0) {
deltAngle = 180;
}
double radio = Math.atan(slope);
double angle = 180 * (radio / Math.PI) + deltAngle - 90;
return angle;
}
/**
* 根据点和斜率算取截距
*/
private double getInterception(double slope, LatLng point) {
double interception = point.latitude - slope * point.longitude;
return interception;
}
/**
* 算取斜率
*/
private double getSlope(int startIndex) {
if ((startIndex + 1) >= mVirtureRoad.getPoints().size()) {
throw new RuntimeException("index out of bonds");
}
LatLng startPoint = mVirtureRoad.getPoints().get(startIndex);
LatLng endPoint = mVirtureRoad.getPoints().get(startIndex + 1);
return getSlope(startPoint, endPoint);
}
/**
* 算斜率
*/
private double getSlope(LatLng fromPoint, LatLng toPoint) {
if (toPoint.longitude == fromPoint.longitude) {
return Double.MAX_VALUE;
}
double slope = ((toPoint.latitude - fromPoint.latitude) / (toPoint.longitude - fromPoint.longitude));
return slope;
}
/**
* 计算x方向每次移动的距离
*/
private double getXMoveDistance(double slope) {
if (slope == Double.MAX_VALUE) {
return DISTANCE;
}
return Math.abs((DISTANCE * slope) / Math.sqrt(1 + slope * slope));
}
/**
* 进行移动逻辑
*/
public void moveLooper() {
new Thread() {
public void run() {
for (int i = 0; i < mVirtureRoad.getPoints().size() - 1; i++) {
LatLng startPoint = mVirtureRoad.getPoints().get(i);
LatLng endPoint = mVirtureRoad.getPoints().get(i + 1);
mMoveMarker.setPosition(startPoint);
mMoveMarker.setRotateAngle((float) getAngle(startPoint, endPoint));
double slope = getSlope(startPoint, endPoint);
//是不是正向的标示（向上设为正向）
boolean isReverse = (startPoint.latitude > endPoint.latitude);
double intercept = getInterception(slope, startPoint);
double xMoveDistance = isReverse ? getXMoveDistance(slope) : -1 * getXMoveDistance(slope);
for (double j = startPoint.latitude; !((j > endPoint.latitude) ^ isReverse); j = j - xMoveDistance) {
LatLng latLng = null;
if (slope != Double.MAX_VALUE) {
latLng = new LatLng(j, (j - intercept) / slope);
} else {
latLng = new LatLng(j, startPoint.longitude);
}
mMoveMarker.setPosition(latLng);
try {
Thread.sleep(TIME_INTERVAL);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
}.start();
} 上述的功能代码我已经放到我的资源下载中去了 http://download.csdn.net/detail/q394895302/9478728，demo用Android studio开发的。