uiview - 为 GMSMapview 的自定义 infoMarkerWindow 实现添加标注

Question

我正在使用 Google IOS SDK 并已实现

- (UIView *)mapView:(GMSMapView *)mapView markerInfoWindow:(GMSMarker *)marker

实现自定义视图。当我显示此视图时，它不会像 Google 地图视图通常为其自己的标记那样添加标注。谁能告诉我如何添加这个标注，比如指向这个自定义 makerInfoWindow 标记的指针？

Answer 1

这是如何做到的。

- (UIView *)mapView:(GMSMapView *)mapView markerInfoWindow:(GMSMarker *)marker{
    int popupWidth = 300;
    int contentWidth = 280;
    int contentHeight = 140;
    int contentPad = 10;
    int popupHeight = 200;
    int popupBottomPadding = 16;
    int popupContentHeight = contentHeight - popupBottomPadding;
    int buttonHeight = 30;
    int anchorSize = 20;
    CLLocationCoordinate2D anchor = marker.position;
    CGPoint point = [mapView.projection pointForCoordinate:anchor];


    UIView *outerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, popupWidth, popupHeight)];
    float offSet = anchorSize * M_SQRT2;
    CGAffineTransform rotateBy45Degrees = CGAffineTransformMakeRotation(M_PI_4); //rotate by 45 degrees
    UIView *callOut = [[UIView alloc] initWithFrame:CGRectMake((popupWidth - offSet)/2.0, popupHeight - offSet, anchorSize, anchorSize)];
    callOut.transform = rotateBy45Degrees;
    callOut.backgroundColor = [UIColor blackColor];
    [outerView addSubview:callOut];

    UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, popupWidth, 190)];
    [view setBackgroundColor:[UIColor whiteColor]];

    view.layer.cornerRadius = 5;
    view.layer.masksToBounds = YES;

    view.layer.borderColor = [UIColor blackColor].CGColor;
    view.layer.borderWidth = 2.0f;



    UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(contentPad, 0, contentWidth, 22)];
    [titleLabel setFont:[UIFont systemFontOfSize:17.0]];
    titleLabel.text = [marker title];

    UILabel *descriptionLabel = [[UILabel alloc] initWithFrame:CGRectMake(contentPad, 24, contentWidth, 80)];
    [descriptionLabel setFont:[UIFont systemFontOfSize:12.0]];
    descriptionLabel.numberOfLines = 5;
    descriptionLabel.text = [marker snippet];

    [view addSubview:titleLabel];
    [view addSubview:descriptionLabel];


    [outerView addSubview:view];

    return outerView;

}

Answer 2

这个方法是一个GMSMapViewDelegate方法，你把delegate设置成view controller了吗？

mapView.delegate = self;