How to show the exact number of clustered markers on google map?

Question

I am using below code for marker clustering (for generating cluster icon with buckets) using Google map sdk,

   id<GMUClusterIconGenerator> iconGenerator = [[GMUDefaultClusterIconGenerator alloc]initWithBuckets:@[@10,@50,@100,@500] backgroundImages:@[cluster1,cluster2,cluster3,cluster4]];

It is clustering markers properly but It is showing 10+ or 50+ numbers on map. For example, If number of markers are 35 then it is displaying 10+ on map, when number of markers exceeds 50 then it is displaying 50+ etc.(refer attached screenshot below). I want to display exact number of markers on cluster Image on map!! I mean if number of markers are 36 then i want 36 instead of 10+. If any one can help!

Screenshot :

Reference : marker-clustering!!

score 7 · Accepted Answer · answered Dec 29 '16 at 06:20

We can manage it by changing one method of GMUDefaultClusterIconGenerator class.

In GMUDefaultClusterIconGenerator.m replace below method,

 - (UIImage *)iconForSize:(NSUInteger)size {
    NSUInteger bucketIndex = [self bucketIndexForSize:size];
    NSString *text;

    // If size is smaller to first bucket size, use the size as is otherwise round it down to the
    // nearest bucket to limit the number of cluster icons we need to generate.
    if (size < _buckets[0].unsignedLongValue) {
    text = [NSString stringWithFormat:@"%ld", (unsigned long)size];
    } else {
    text = [NSString stringWithFormat:@"%ld+", _buckets[bucketIndex].unsignedLongValue];
  }
   if (_backgroundImages != nil) {
    UIImage *image = _backgroundImages[bucketIndex];
    return [self iconForText:text withBaseImage:image];
}
     return [self iconForText:text withBucketIndex:bucketIndex];
 }

with

 - (UIImage *)iconForSize:(NSUInteger)size {
    NSUInteger bucketIndex = [self bucketIndexForSize:size];
    NSString *text;

    // If size is smaller to first bucket size, use the size as is otherwise round it down to the
   // nearest bucket to limit the number of cluster icons we need to generate.
   if (size < _buckets[0].unsignedLongValue) {
     text = [NSString stringWithFormat:@"%ld", (unsigned long)size];
   }


  else{
    text = [NSString stringWithFormat:@"%ld", (unsigned long)size];
  }

  if (_backgroundImages != nil) {
    UIImage *image = _backgroundImages[bucketIndex];
    return [self iconForText:text withBaseImage:image];
  }
  return [self iconForText:text withBucketIndex:bucketIndex];
 }

What i have done is, I have just change else portion and set text as exact number instead of string with +!

Awesome solution! I would like to know does it harm performace also? — Tarvo Mäesepp, Jul 16 '17 at 08:58
The map count is only increasing if I remove a marker from cluster the value is not decreasing, Can you explain why this is happening @Lion — Albi, Jul 30 '18 at 08:49

How to show the exact number of clustered markers on google map?

1 Answers1