iOS高德地图之自定义大头针and泡泡view

啥都不说先看效果图demo

IMG_0270.PNG

先来说说如何自定义大头针以及点击大头针时弹出的泡泡view

一 : 自定义大头针

• 新建CustomAnnotationView 继承自MAAnnotationView
• 添加属性
• 重写- (id)initWithAnnotation:(id)annotation reuseIdentifier:(NSString *)reuseIdentifier
• 重写- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event 解决泡泡view超出父控件事件响应问题
• 重写- (void)setSelected:(BOOL)selected animated:(BOOL)animated

二 : 自定义泡泡View

• 新建自定义气泡类 CustomCalloutView，继承 UIView。
• 在 CustomCalloutView.h 中定义数据属性，包含：图片、商户名和商户地址。(随便你怎么搞,在这里我就搞了一个xib)

Snip20170620_1.png

• 在上面新建的CustomAnnotationView.h中定义自定义气泡属性

#import "CustomCalloutView.h"

@interface CustomAnnotationView : MAAnnotationView

@property (nonatomic, readonly) CustomCalloutView *calloutView;

@end

• 重写选中方法- (void)setSelected:(BOOL)selected animated:(BOOL)animated。选中时新建并添加calloutView，传入数据；非选中时删除calloutView。

- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
    if (self.selected == selected)
    {
        return;
    }
    
    if (selected)
    {
        if (self.calloutView == nil)
        {
            /* Construct custom callout. */
            
            self.calloutView = [CustomCalloutView calloutView];
            self.calloutView.frame = CGRectMake(0, 0, kCalloutWidth, kCalloutHeight);
            self.calloutView.center = CGPointMake(CGRectGetWidth(self.bounds) / 2.f + self.calloutOffset.x,
                                                  -CGRectGetHeight(self.calloutView.bounds) / 2.f + self.calloutOffset.y);
        }
        
        [self addSubview:self.calloutView];
    }
    else
    {
        [self.calloutView removeFromSuperview];
    }
    
    [super setSelected:selected animated:animated];
}

• 修改ViewController.m，在MAMapViewDelegate的回调方法mapView:viewForAnnotation中的修改annotationView的类型

#pragma mark - MAMapViewDelegate

- (MAAnnotationView *)mapView:(MAMapView *)mapView viewForAnnotation:(id)annotation
{
    if ([annotation isKindOfClass:[MAPointAnnotation class]])
    {
        static NSString *customReuseIndetifier = @"customReuseIndetifier";
        
        CustomAnnotationView *annotationView = (CustomAnnotationView*)[mapView dequeueReusableAnnotationViewWithIdentifier:customReuseIndetifier];
        
        if (annotationView == nil)
        {
            annotationView = [[CustomAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:customReuseIndetifier];
            // must set to NO, so we can show the custom callout view.
            annotationView.canShowCallout = NO;
            annotationView.draggable = YES;
            annotationView.calloutOffset = CGPointMake(0, -5);
        }
        
        return annotationView;
    }
    
    return nil;
}

• 用于调整泡泡view显示不全问题

- (void)mapView:(MAMapView *)mapView didSelectAnnotationView:(MAAnnotationView *)view
{
    /* Adjust the map center in order to show the callout view completely. */
    if ([view isKindOfClass:[CustomAnnotationView class]]) {
        CustomAnnotationView *cusView = (CustomAnnotationView *)view;
        CGRect frame = [cusView convertRect:cusView.calloutView.frame toView:self.mapView];
        
        frame = UIEdgeInsetsInsetRect(frame, UIEdgeInsetsMake(kCalloutViewMargin, kCalloutViewMargin, kCalloutViewMargin, kCalloutViewMargin));
        
        if (!CGRectContainsRect(self.mapView.frame, frame))
        {
            /* Calculate the offset to make the callout view show up. */
            CGSize offset = [self offsetToContainRect:frame inRect:self.mapView.frame];
            
            CGPoint theCenter = self.mapView.center;
            theCenter = CGPointMake(theCenter.x - offset.width, theCenter.y - offset.height);
            
            CLLocationCoordinate2D coordinate = [self.mapView convertPoint:theCenter toCoordinateFromView:self.mapView];
            
            [self.mapView setCenterCoordinate:coordinate animated:YES];
        }
        
    }
}