Ios 如何使用现有注释添加新注释？

在我的申请中，我被发布了从特定位置录制的视频。我可以从另一个服务响应获取已发布位置详细信息的列表。因此，最初我获得了发布的位置详细信息，并将其显示在MapView上。在MapView中，管脚以集群效果显示，因此我使用了

下面我已经在地图上加载了注释

- (void)loadLocations:(NSArray *)arrayValues 
{
    _annotationArray = arrayValues;

    [self.clusteringController setAnnotations:[self reSetannotations]];

    [self.mapView setZoomEnabled:YES];

    [self.mapView setCenterCoordinate:self.mapView.userLocation.coordinate];

    [self.mapView setUserTrackingMode:MKUserTrackingModeFollow];


    KPGridClusteringAlgorithm *algorithm = [KPGridClusteringAlgorithm new];

    algorithm.annotationSize = CGSizeMake(25, 50);

    algorithm.clusteringStrategy = KPGridClusteringAlgorithmStrategyTwoPhase;

    self.clusteringController = [[KPClusteringController alloc] initWithMapView:self.mapView
                                                            clusteringAlgorithm:algorithm];
    self.clusteringController.delegate = self;

    self.clusteringController.animationOptions = UIViewAnimationOptionCurveEaseOut;

    [self.clusteringController setAnnotations:[self annotations]];

    NSString * lastobjlat;

    double miles;

    CLLocation * location = [COMMON currentLocation];

    lastobjlat = [NSString stringWithFormat:@"%f",location.coordinate.latitude];

    miles = 1.;

    double scalingFactor = ABS( (cos(2 * M_PI * [lastobjlat floatValue] / 360.0) ));

    MKCoordinateSpan span;

    span.latitudeDelta = miles/69.0;

    span.longitudeDelta = miles/(scalingFactor * 69.0);

    MKCoordinateRegion region;

    region.span = span;

    region.center = location.coordinate;

    [self.mapView setRegion:region animated:YES];

    self.mapView.showsUserLocation = YES;


    //Call in the below selectAnnotationAction method when I came to this, after I published new one on existed or new locations
    if (COMMON.isRecentPublication == YES) {

        COMMON.isRecentPublication = NO;

        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{

            [self selectAnnotationAction];
        });
    }
}

//重置批注的步骤

- (NSArray *)reSetannotations 
{
    NSMutableArray *annotations = [NSMutableArray array];

    return annotations;
}

//在这里，我管理了自定义标记类MapAnnotation上的位置详细信息

- (NSArray *)annotations {

    CLLocationCoordinate2D locationPort;

    NSMutableArray *annotations = [NSMutableArray array];

    NSString *latitude, *longitude;

    if ([_annotationArray count] > 0) {

        for (int i = 0; i <[_annotationArray count]; i++){

            latitude = [NSString stringWithFormat:@"%@",[[_annotationArray objectAtIndex:i] valueForKey:@"latitude"]];

            latitude = [latitude stringByReplacingOccurrencesOfString:@"\n" withString:@""];

            latitude = [latitude stringByReplacingOccurrencesOfString:@"\t" withString:@""];

            longitude = [NSString stringWithFormat:@"%@",[[_annotationArray objectAtIndex:i] valueForKey:@"longitude"]];

            longitude = [longitude stringByReplacingOccurrencesOfString:@"\n" withString:@""];

            longitude = [longitude stringByReplacingOccurrencesOfString:@"\t" withString:@""];

            latitude = [NSString replaceEmptyStringInsteadOfNull:latitude];

            longitude = [NSString replaceEmptyStringInsteadOfNull:longitude];

            int publicationRatio   = [[[_annotationArray objectAtIndex:i] valueForKey:@"publicationRatio"] intValue];

            int publicationCount   = [[[_annotationArray objectAtIndex:i] valueForKey:@"publicationsCount"] intValue];

            int teazLocationId     = [[[_annotationArray objectAtIndex:i] valueForKey:@"objectId"] intValue];

            BOOL isUpgrade         = [[[_annotationArray objectAtIndex:i] valueForKey:@"isUpgraded"] boolValue];

            locationPort = CLLocationCoordinate2DMake([latitude doubleValue] ,
                                                      [longitude doubleValue]);

            //TODO : This is my custom annotation method

            MapAnnotation *a1 = [[MapAnnotation alloc] initWithCoordinate:locationPort
                                                                            tag:i
                                                               publicationRatio:publicationRatio
                                                               publicationCount:publicationCount
                                                                 teazLocationId:teazLocationId isUpgraded:isUpgrade];

            a1.itemindex = i + 1;

            a1.publicationRatio = publicationRatio;

            a1.publicationCount = publicationCount;

            a1.teazLocationId = teazLocationId;

            a1.isUpgraded = isUpgrade;

            a1.coordinate = CLLocationCoordinate2DMake([latitude doubleValue] ,
                                                       [longitude doubleValue] );
            [annotations addObject:a1];

            if (COMMON.isRecentPublication == YES) {

                if ([COMMON.recentPublicationLocationID  isEqual: @(publishedLocationId)]) {

                    _recentAnnotationView = [[MKPinAnnotationView alloc] initWithAnnotation:a1 reuseIdentifier:@"cluster"];

                }
            }
        }
    }

    return annotations;
}

//选择注释动作

- (void)selectAnnotationAction {

    COMMON.isRecentPublication = NO;

    COMMON.recentPublicationLocationID = nil;

    [self mapView:self.mapView didSelectAnnotationView:_recentAnnotationView];
}

如果我直接将recentPublishedLocation详细信息传递给didSelectAnnotationView委托，我只能在活动pin中显示，而不是活动pin

然后我用断点调试，为什么我只能在活动管脚中看到

因为在这种情况下，调用了didselect委托，我可以看到活动pin图像。但这只需要几秒钟

因为其他pin注释快速调用了viewForAnnotation委托，所以选定的pin注释将进入未选定状态

这才是真正的问题。如何使用集群解决这一问题

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因为当我在地图上正确地显示发布的位置细节时，它应该具有集群效果。是的，我将放大以查看具有群集效果的管脚。

最后，我得到了解决方案，并使用而不是实现了我的要求

这个工具真的很有帮助，可以帮助我实现附加注释，并根据我的需求定制每件事情

所以这对我更有帮助。当然，你们所有人

该工具支持苹果和谷歌地图，包括Objective c和Swift

我希望这一点对其他开发者也更有帮助

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谢谢：）

你真的希望一个陌生人能读到所有这些文字吗？@EI-Tomato我需要建议，所以我只是解释了我做的。这就是为什么我用文字来解释。所以我不能忽视它。

- (void)selectAnnotationAction {

    COMMON.isRecentPublication = NO;

    COMMON.recentPublicationLocationID = nil;

    [self mapView:self.mapView didSelectAnnotationView:_recentAnnotationView];
}