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我有段的按钮视图。单击索引为“1”的按钮时，它应该显示带有一些叠加层的地图视图。出于这个原因，我有以下代码：

    {
        [_routeMap setHidden:NO];
        [self drawTheMap];
        [_routeMap setRegion:_region animated:YES];
        [_routeMap regionThatFits:_region];
        [_navBar setHidden:NO];
        NSLog(@"overlays: %@", _routeMap.overlays);
    }
    -(void)drawTheMap
    {
        [_routeMap setFrame:CGRectMake(0, 44, 320, 416)];
        for (int i=0; i<[_arrayOfPoints count]; i++) {
            CLLocation* location = [[CLLocation alloc] initWithLatitude:[[_arrayOfPoints objectAtIndex:i] latitude] 
                                                          longitude:[[_arrayOfPoints objectAtIndex:i] longitude]];

    ... 
        MKCircle * dot = [MKCircle circleWithCenterCoordinate:location.coordinate radius:radius];
            [_routeMap addOverlay:dot];

    ...  
    }
    ...
    }
    - (MKOverlayView *)mapView:(MKMapView *)mapView viewForOverlay:(id <MKOverlay>)overlay
{
    MKCircleView *circleView = [[MKCircleView alloc] initWithCircle:overlay];
    circleView.lineWidth = 1.0;
    circleView.strokeColor = [UIColor orangeColor];
    [circleView setFillColor:[UIColor orangeColor]];

    return [circleView autorelease];
}

但是 viewForOverlay 方法从未被调用 =(。NSLog 告诉我 mkmapview 包含一些覆盖。有人可以帮助我吗？

4

1 回答 1

2

在方法-(void)drawTheMap中，而不是 [_routeMap addOverlay:dot];尝试 [self addOverlay:dot];

于 2011-09-19T15:53:12.740 回答