Objective c MKMapVIew存在问题,我的Pin点显示方向不正确(我使用的是MKMapVIew的指南针模式)
我正在开发一个iPhone应用程序,可以与地图一起使用。在这个应用程序中,我需要根据纬度和经度显示一些停车位(地址)。在这一点上,我成功地完成了,但我想显示相对于用户方向(SE、SW、NE、NW)的引脚点。我试着在MKMapview中使用指南针模式,但它显示了错误方向的针点 我的代码中有错误还是web服务的错误?我将用户位置LAT和LONG以及用户方向传递给web服务 我现在给你看屏幕截图Objective c MKMapVIew存在问题,我的Pin点显示方向不正确(我使用的是MKMapVIew的指南针模式),objective-c,google-maps,mkmapview,compass-geolocation,Objective C,Google Maps,Mkmapview,Compass Geolocation,我正在开发一个iPhone应用程序,可以与地图一起使用。在这个应用程序中,我需要根据纬度和经度显示一些停车位(地址)。在这一点上,我成功地完成了,但我想显示相对于用户方向(SE、SW、NE、NW)的引脚点。我试着在MKMapview中使用指南针模式,但它显示了错误方向的针点 我的代码中有错误还是web服务的错误?我将用户位置LAT和LONG以及用户方向传递给web服务 我现在给你看屏幕截图 - (void)updateHeading:(CLHeading *) newHeading { NSLo
- (void)updateHeading:(CLHeading *) newHeading {
NSLog(@"New magnetic heading: %f", newHeading.magneticHeading);
NSLog(@"New true heading: %f", newHeading.trueHeading);
double rotation = newHeading.magneticHeading * 3.14159 / 180;
NSLog(@"rotation ========> %f",rotation);
[mapView setTransform:CGAffineTransformMakeRotation(rotation)];
[[mapView annotations] enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
MKAnnotationView * view = [mapView viewForAnnotation:obj];
[view setTransform:CGAffineTransformMakeRotation(rotation)];
}];
//NSLog(@"newlocation course : %f",mapView.userLocation.location.course);
float mHeading = newHeading.magneticHeading;
NSLog(@"mHeading %f",mHeading);
//direction is a string
if(mHeading > 0 && mHeading <90) {
// north east
NSLog(@"~~~~~~~~~~~~~~~~north east");
direction = @"North East";
}
else if(mHeading > 90 && mHeading < 180) {
// south east
NSLog(@"~~~~~~~~~~~~~~~~south east");
direction = @"South East";
}
else if(mHeading > 180 && mHeading < 270) {
// south west
NSLog(@"~~~~~~~~~~~~~~~~south west");
direction = @"South West";
}
else if(mHeading > 270 && mHeading < 360) {
// north west
NSLog(@"~~~~~~~~~~~~~~~~north west");
direction = @"North West";
}
if([changedDirction isEqualToString:direction])
{
NSLog(@"called nothing/changedDirction.....");
}
else
{
NSURL *url = [NSURL URLWithString:@"http://www.charlottecentercity.org/services/nearbylocations.php"];
NSLog(@"url is---%@",url);
directionsRequest = [[ASIFormDataRequest alloc] initWithURL:url];
[directionsRequest setPostValue:[NSString stringWithFormat:@"%f", appdelegate.currentLocation.latitude] forKey:@"lat"];
[directionsRequest setPostValue:[NSString stringWithFormat:@"%f", appdelegate.currentLocation.longitude] forKey:@"long"];
directionLabel.text = direction;
[directionsRequest setPostValue:direction forKey:@"direction"];
[directionsRequest setPostValue:self.mapID forKey:@"id"];
directionsRequest.delegate = self;
[directionsRequest startAsynchronous];
changedDirction = direction;
} }
-(void)requestFinished:(ASIHTTPRequest *)request {
NSLog(@"request finished is calling....");
if ([venuDescArray count]>0)
{
[venuDescArray removeAllObjects];
}
NSError *error = [request error];
NSLog(@"error is%@",error);
if (!error)
{
NSString *responseString = [request responseString];
NSMutableArray *array = [responseString JSONValue];
NSLog(@"response array for category wise pin--%@",array);
for (int i = 0; i<[array count]; i++)
{
NSMutableDictionary *theDict = [array objectAtIndex:i];
PlacesObject *aVenue = [[PlacesObject alloc] init];
aVenue.venueDetailsplaceID = [theDict objectForKey:@"placeid"];
aVenue.venueDetailsname = [theDict objectForKey:@"name"];
aVenue.venueDetailsaddress = [theDict objectForKey:@"address"];
aVenue.venueDetailslatitude = [theDict objectForKey:@"latitude"];
aVenue.venueDetailslongitude = [theDict objectForKey:@"longitude"];
[venuDescArray addObject:aVenue];
}
NSLog(@"venuDescArray count is---%d",[venuDescArray count]);
}
[self setLocations]; }
-(void)setLocations {
[annotaionsArray11 removeAllObjects];
[mapView removeAnnotations:mapView.annotations];
NSLog(@"annotations removed....");
self.mapView.mapType = MKMapTypeStandard;
self.mapView.delegate = self;
MyAnnotation *myAnnotation = [[MyAnnotation alloc] init];
float lati_new =appdelegate.currentLocation.latitude;//35.227087;
float longi_new =appdelegate.currentLocation.longitude;//-80.843127;
myAnnotation.annType=@"Current";
myAnnotation.title1 =@"Current our Location";
myAnnotation.latitude=[NSNumber numberWithFloat:lati_new];
myAnnotation.longitude =[NSNumber numberWithFloat:longi_new];
NSLog(@"myAnnotation.latitude/float---%@",myAnnotation.latitude);
NSLog(@"myAnnotation.longitude/float---%@",myAnnotation.longitude);
[annotaionsArray11 addObject:myAnnotation];
[myAnnotation setButtonTag:0];
NSLog(@"self.venuDescArray count:%d",[self.venuDescArray count]);
PlacesObject *placesObj=[[PlacesObject alloc] init];
for (int i=0; i<[self.venuDescArray count]; i++)
{
placesObj=[self.venuDescArray objectAtIndex:i];
MyAnnotation *myAnnotation = [[MyAnnotation alloc] init];
myAnnotation.annType=@"Points";
myAnnotation.title1 =placesObj.venueDetailsname;
NSLog(@"myAnnotation.title1's is---%@",myAnnotation.title1);
myAnnotation.subTitle =placesObj.venueDetailsaddress;
NSLog(@"myAnnotation.subTitle is---%@",myAnnotation.subTitle);
myAnnotation.latitude =[NSNumber numberWithFloat:[placesObj.venueDetailslatitude floatValue]];
NSLog(@"myAnnotation.latitudes is ----%@",myAnnotation.latitude);
myAnnotation.longitude =[NSNumber numberWithFloat:[placesObj.venueDetailslongitude floatValue]];
NSLog(@"myAnnotation.longitude is ----%@",myAnnotation.longitude);
[annotaionsArray11 addObject:myAnnotation];
NSLog(@"annotaionsArray11---%d",[annotaionsArray11 count]);
[myAnnotation setButtonTag:i];
}
NSLog(@"annotaionsArray count after adding all locations..%d",[annotaionsArray11 count]);
[mapView addAnnotations:annotaionsArray11]; }
-(void)更新标题:(CLHeading*)新标题{
NSLog(@“新磁航向:%f”,新航向。磁航向);
NSLog(@“新的真实标题:%f”,newHeading.trueHeading);
双旋转=新航向。磁航向*3.14159/180;
NSLog(@“旋转=====>%f”,旋转);
[mapView setTransform:CGAffineTransformMakeRotation(旋转)];
[[mapView注释]enumerateObjectsUsingBlock:^(id obj,整数idx,布尔*停止){
MKAnnotationView*视图=[mapView视图用于注释:obj];
[视图集变换:CGAffineTransformMakeRotation(旋转)];
}];
//NSLog(@“新位置课程:%f”,mapView.userLocation.location.course);
浮动mHeading=newHeading.magneticeHeading;
NSLog(@“mHeading%f”,mHeading);
//方向是一根弦
如果(mHeading>0&&mHeading 90&&mHeading<180){
//东南部
NSLog(@“~~~~~~~~~~~~~~~~~~东南”);
方向=@“东南”;
}
否则,如果(mHeading>180&&mHeading<270){
//西南部
NSLog(@“~~~~~~~~~~~~~~~~~~~西南”);
方向=@“西南”;
}
否则如果(mHeading>270&&mHeading<360){
//西北部
NSLog(@“~~~~~~~~~~~~~~~~~~~西北”);
方向=@“西北”;
}
if([changedDirction isEqualToString:方向])
{
NSLog(@“调用nothing/changedDirction…”);
}
其他的
{
NSURL*url=[NSURL URLWithString:@”http://www.charlottecentercity.org/services/nearbylocations.php"];
NSLog(@“url为---%@”,url);
DirectionRequest=[[ASIFormDataRequest alloc]initWithURL:url];
[DirectionRequest setPostValue:[NSString stringWithFormat:@“%f”,appdelegate.currentLocation.latitude]forKey:@“lat”];
[DirectionRequest setPostValue:[NSString stringWithFormat:@“%f”,appdelegate.currentLocation.longitude]forKey:@“long”];
directionLabel.text=方向;
[DirectionRequest setPostValue:direction forKey:@“direction”];
[DirectionRequest setPostValue:self.mapID-forKey:@“id”];
directionrequest.delegate=self;
[方向请求启动同步];
改变方向=方向;
} }
-(void)requestFinished:(ASIHTTPRequest*)请求{
NSLog(@“请求完成正在调用…”);
如果([venuDescArray计数]>0)
{
[venuDescArray removeAllObjects];
}
n错误*错误=[请求错误];
NSLog(@“错误为%@”,错误);
如果(!错误)
{
NSString*responseString=[request responseString];
NSMutableArray*数组=[responseString JSONValue];
NSLog(@“分类引脚响应数组--%@”,数组);
对于(int i=0;i,由于这个问题在某种程度上是特定的,并且这里并没有显示所有代码,所以我只能尝试从当前可用的信息中推断。
您希望根据用户的标题显示四个不同停车位置组中的一个,但更改标题时,注释不会更改
基于web服务返回正确结果的假设,问题可能是由您的使用方式引起的
MKAnnotationView * view = [mapView viewForAnnotation:obj];
请检查您是否在代码中使用了重用标识符。“正确方向”你的意思是你想让图钉始终指向北方,即使地图旋转,使西部位于屏幕顶部?如果是这样,我会反对。我还没有在任何其他地图应用程序中看到这样的情况,你的用户可能会认为图钉都掉了是很奇怪的。你确定你得到了正确的回应吗网络服务?