ios - 在 MKMapView 中渲染 map 线我的 map 被卡住

Question

大家好，我希望你能帮助我:

- (IBAction) addPoints: (id) sender
{
NSArray *latitudePoints;
NSArray *longitudePoints;
BOOL flag = NO;
@try
{
switch (lugar)
{
    case 0:
        break;

    case 1:
        latitudePoints = @[@27.781361, @27.777894, @27.766683, @27.757066, @27.745613, @27.737327, @27.728247, @27.720827, @27.720866, @27.719083, @27.722266, @27.721097, @27.739263, @27.758177, @27.780688];
        longitudePoints = @[@-15.714188, @-15.720175, @-15.726072, @-15.740874, @-15.746066, @-15.759544, @-15.763944, @-15.774408, @-15.764822, @-15.752658, @-15.735975, @-15.715497, @-15.718150, @-15.712244, @-15.713213];
        flag = YES;
        break;

    case 2:
        latitudePoints = @[@28.249792, @28.254583, @28.259865, @28.264000, @28.265621, @28.267694, @28.270308, @28.272192, @28.273966, @28.275698, @28.277723, @28.279901];
        longitudePoints = @[@-16.841880, @-16.842477, @-16.842657, @-16.844832, @-16.848396, @-16.851215, @-16.852329, @-16.856142, @-16.859281, @-16.860882, @-16.862011, @-16.863116];
        flag = YES;
        break;

    default:
        [NSException raise:@"Unknown place" format:@"Unknown place"];
        break;
}
// NSLog(@"Lugar %d Flag %d",lugar,flag);
if (flag && [longitudePoints count] == [latitudePoints count])
{
    anotacionesMapa *point; // anotacionesMapa is a custom MKAnnotation class, just have title, subtitle and coord atribute
    CLLocationCoordinate2D placePoint;
    NSMutableArray *pointList = [[NSMutableArray alloc] initWithCapacity:[longitudePoints count]];
    for (int c = 0; c < [longitudePoints count]; c++)
    {
        placePoint.latitude = [[latitudePoints objectAtIndex:c] doubleValue];
        placePoint.longitude = [[longitudePoints objectAtIndex:c] doubleValue];
        if (c % 2 == 0)
            point = [[anotacionesMapa alloc] initWithTitle:[NSString stringWithFormat:@"[Picture here] Nothing"]
                                                  subtitle:@""
                                             andCoordinate: placePoint];
        else
            point = [[anotacionesMapa alloc] initWithTitle:[NSString stringWithFormat:@"Something"]
                                                  subtitle:@"[Pic here] test"
                                             andCoordinate: placePoint];
        [self.mapView addAnnotation:point];
        CLLocation *linePoint = [[CLLocation alloc] initWithLatitude:placePoint.latitude longitude:placePoint.longitude];
        [pointList addObject: linePoint];
    }
    ruta = [[CSMapRouteLayerView alloc] initWithRoute:pointList
                                              mapView:self.mapView];
}
}
@catch (NSException *exception)
{
UIAlertView *alert;
alert = [[UIAlertView alloc] initWithTitle:@"Error..."
                                   message:[NSString stringWithFormat:@"%@", exception]
                                  delegate:self
                         cancelButtonTitle:@"Aceptar"
                         otherButtonTitles:nil];
[alert show];
}
}

我有这段代码，然后我需要打印 PuntosLT 和 PuntosLG 存储纬度和经度的坐标之间的行，但是当它需要打印这些行时(实际上以蓝色打印这些行，我想打印红色)MKMapView 被卡住，无法四处移动，也无法缩放，我认为它会出现错误并绘制不在坐标中的其他线条，最后我的注释中的自定义图像再次变成红色引脚，像默认和像标题、副标题这样的信息不起作用。

谢谢。

编辑:方法/构造函数

-(id) initWithRoute:(NSArray*)routePoints mapView:(MKMapView*)mapView
{
self = [super initWithFrame:CGRectMake(0, 0, mapView.frame.size.width, mapView.frame.size.height)];
[self setBackgroundColor:[UIColor clearColor]];

[self setMapView:mapView];
[self setPoints:routePoints];

// determine the extents of the trip points that were passed in, and zoom in to that area. 
CLLocationDegrees maxLat = -90;
CLLocationDegrees maxLon = -180;
CLLocationDegrees minLat = 90;
CLLocationDegrees minLon = 180;

for(int idx = 0; idx < self.points.count; idx++)
{
    CLLocation* currentLocation = [self.points objectAtIndex:idx];
    if(currentLocation.coordinate.latitude > maxLat)
        maxLat = currentLocation.coordinate.latitude;
    if(currentLocation.coordinate.latitude < minLat)
        minLat = currentLocation.coordinate.latitude;
    if(currentLocation.coordinate.longitude > maxLon)
        maxLon = currentLocation.coordinate.longitude;
    if(currentLocation.coordinate.longitude < minLon)
        minLon = currentLocation.coordinate.longitude;
}

MKCoordinateRegion region;
region.center.latitude     = (maxLat + minLat) / 2;
region.center.longitude    = (maxLon + minLon) / 2;
region.span.latitudeDelta  = maxLat - minLat;
region.span.longitudeDelta = maxLon - minLon;

[self.mapView setRegion:region];
[self.mapView setDelegate:self];
[self.mapView addSubview:self];

return self;
}

Answer 1

我修复了使用苹果mapkit中的一些新变量，我删除了CSMapRouteLayerView lib。我补充道:

MKPolyline *routeLine;
MKPolylineView *routeLineView;

在我的问题方法中添加以下代码:

- (IBAction) addPuntos: (id) sender
{
NSArray *puntosLt;
NSArray *puntosLg;
BOOL flag = NO;
@try
{
    switch (lugar)
    {
        case 0:
            break;

        case 1:
            puntosLt = @[@27.781361, @27.777894, @27.766683, @27.757066, @27.745613, @27.737327, @27.728247, @27.720827, @27.720866, @27.719083, @27.722266, @27.721097, @27.739263, @27.758177, @27.780688];
            puntosLg = @[@-15.714188, @-15.720175, @-15.726072, @-15.740874, @-15.746066, @-15.759544, @-15.763944, @-15.774408, @-15.764822, @-15.752658, @-15.735975, @-15.715497, @-15.718150, @-15.712244, @-15.713213];
            flag = YES;
            break;

        case 2:
            puntosLt = @[@28.249792, @28.254583, @28.259865, @28.264000, @28.265621, @28.267694, @28.270308, @28.272192, @28.273966, @28.275698, @28.277723, @28.279901];
            puntosLg = @[@-16.841880, @-16.842477, @-16.842657, @-16.844832, @-16.848396, @-16.851215, @-16.852329, @-16.856142, @-16.859281, @-16.860882, @-16.862011, @-16.863116];
            flag = YES;
            break;

        default:
            [NSException raise:@"Lugar desconocido" format:@"Lugar desconocido"];
            break;
    }
    // NSLog(@"Lugar %d Flag %d",lugar,flag);
    if (flag && [puntosLg count] == [puntosLt count])
    {
        anotacionesMapa *punto;
        CLLocationCoordinate2D lugarPunto;
        CLLocationCoordinate2D puntitos[[puntosLg count]];
        for (int c = 0; c < [puntosLg count]; c++)
        {
            lugarPunto.latitude = [[puntosLt objectAtIndex:c] doubleValue];
            lugarPunto.longitude = [[puntosLg objectAtIndex:c] doubleValue];
            punto = [[anotacionesMapa alloc] initWithTitle:[NSString stringWithFormat:@"[Foto barco] Sin avistamientos"]
                                                  subtitle:@""
                                             andCoordinate: lugarPunto];
            [self.mapView addAnnotation:punto];
            puntitos[c] = CLLocationCoordinate2DMake(lugarPunto.latitude, lugarPunto.longitude);
        }
        self.routeLine = [MKPolyline polylineWithCoordinates:puntitos count:[puntosLg count]];
        [self.mapView setVisibleMapRect: [self.routeLine boundingMapRect]];
        [self.mapView addOverlay: self.routeLine];
    }
}
@catch (NSException *exception)
{
    UIAlertView *alert;
    alert = [[UIAlertView alloc] initWithTitle:@"Error..."
                                       message:[NSString stringWithFormat:@"%@", exception]
                                      delegate:self
                             cancelButtonTitle:@"Aceptar"
                             otherButtonTitles:nil];
    [alert show];
}
}

PD:我不会使用@try/@catch，这是我使用MKMapView的示例应用程序，所以我将它们保留在这个迷你项目中，其余的我将遵循http://developer.apple.com/library/ios/#Documentation/Cocoa/Conceptual/ErrorHandlingCocoa/ErrorHandling/ErrorHandling.html

谢谢。