iOS 高德地图SDK 批量创建大头针

最新推荐文章于 2022-11-10 17:04:09 发布

原创最新推荐文章于 2022-11-10 17:04:09 发布 · 3.9k 阅读

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#高德地图 #ios

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本文介绍了一种在iOS地图应用中实现坐标标注的方法。通过创建并初始化多个坐标点，使用MAPointAnnotation对象来标注这些坐标，并通过Delegate方法自定义每个标注的外观。最终实现了在地图上添加大头针的效果。

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</pre><pre name="code" class="objc">

1.将所有坐标标注上

- (void)initAnnotations
{
    self.annotations = [NSMutableArray array];
    
    CLLocationCoordinate2D coordinates[10] = {
        {39.992520, 116.336170},
        {39.992520, 116.336170},
        {39.998293, 116.352343},
        {40.004087, 116.348904},
        {40.001442, 116.353915},
        {39.989105, 116.353915},
        {39.989098, 116.360200},
        {39.998439, 116.360201},
        {39.979590, 116.324219},
        {39.978234, 116.352792}};
    
    for (int i = 0; i < 10; ++i)
    {
        MAPointAnnotation *a1 = [[MAPointAnnotation alloc] init];
        a1.coordinate = coordinates[i];
        a1.title      = [NSString stringWithFormat:@"anno: %d", i];
        [self.annotations addObject:a1];
    }
}

然后会调取 Delegate 方法

#pragma mark - MAMapViewDelegate

- (MAAnnotationView *)mapView:(MAMapView *)mapView viewForAnnotation:(id<MAAnnotation>)annotation
{
    if ([annotation isKindOfClass:[MAPointAnnotation class]])
    {
        static NSString *pointReuseIndetifier = @"pointReuseIndetifier";
        MAPinAnnotationView *annotationView = (MAPinAnnotationView*)[mapView dequeueReusableAnnotationViewWithIdentifier:pointReuseIndetifier];
        if (annotationView == nil)
        {
            annotationView = [[MAPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:pointReuseIndetifier];
        }
        
        annotationView.canShowCallout               = YES;
        annotationView.animatesDrop                 = YES;
        annotationView.draggable                    = YES;
        annotationView.rightCalloutAccessoryView    = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
        annotationView.pinColor                     = [self.annotations indexOfObject:annotation] % 3;
        
        return annotationView;
    }
    
    return nil;
}

-----> 添加大头针在地图上

    [self.mapView addAnnotations:self.annotations];

---> 跳转到大头针展示的地方


    [self.mapView showAnnotations:self.annotations edgePadding:UIEdgeInsetsMake(20, 20, 20, 80) animated:YES];

完成。