ios 百度地图SDK 设置标注点显示优先级，并自定义弹出视图

 

- (BMKAnnotationView *)mapView:(BMKMapView *)mapView viewForAnnotation:(id<BMKAnnotation>)annotation {
    if ([annotation isKindOfClass:[CustomAnnotation class]]) {
        /**
         根据指定标识查找一个可被复用的标注，用此方法来代替新创建一个标注，返回可被复用的标注
         */
        BMKPinAnnotationView *annotationView = (BMKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:annotationViewIdentifier];
        if (!annotationView) {
            /**
             初始化并返回一个annotationView
             @param annotation 关联的annotation对象
             @param reuseIdentifier 如果要重用view，传入一个字符串，否则设为nil，建议重用view
             @return 初始化成功则返回annotationView，否则返回nil
             */
            annotationView = [[BMKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:annotationViewIdentifier];
        }
        NSString *fileName;
        if ([((CustomAnnotation*)annotation).specialFlag isEqual:@"start"]) {
            fileName = @"start_70";
//            CGPoint p={11,-11};
//            annotationView.centerOffset=p;
             [annotationView setBounds:CGRectMake(0, 0, 50, 50)];
            annotationView.displayPriority=251 ;
        }else if([((CustomAnnotation*)annotation).specialFlag isEqual:@"end"]){
            fileName = @"end";
             [annotationView setBounds:CGRectMake(0, 0, 50, 50)];
            annotationView.displayPriority=252 ;
        }else{
            fileName = @"icon_nav_waypoint";
             annotationView.displayPriority=BMKFeatureDisplayPriorityDefaultLow;
        }
        UIImage *img=[UIImage imageNamed:fileName];
        //annotationView显示的图片，默认是大头针
        annotationView.image =img;
        TimeAddressPaoPaoView *customPopView = [[[NSBundle mainBundle] loadNibNamed:@"TimeAddressPaoPaoView" owner:nil options:nil] firstObject];
        [customPopView setTimeStr:((CustomAnnotation*)annotation).timeStr andAddressStr:((CustomAnnotation*)annotation).title];
        BMKActionPaopaoView *pView = [[BMKActionPaopaoView alloc] initWithCustomView:customPopView];
        pView.frame = customPopView.frame;
        annotationView.paopaoView = pView;
        return annotationView;
    }
    return nil;
}