annotationsToIgnore are only refreshed every other reload

[marotan3]

hi,

I am using OCMapViews with a a few annotations that should always be visible. Adding and clustering all work, but when I zoom in or pan the view, the view is reloaded, and then the annotationsToIgnore are gone. Upon a next refresh, they are back. I could locate the issue to the final lines of the doClustering method:

    // Clear map but leave Userlcoation
    NSMutableArray *annotationsToRemove = [[NSMutableArray alloc] initWithArray:self.displayedAnnotations];
    [annotationsToRemove removeObject:self.userLocation];

    // add clustered and ignored annotations to map
    [super addAnnotations: clusteredAnnotations];
    [super addAnnotations: [annotationsToIgnore allObjects]];

    // fix for flickering
    [annotationsToRemove removeObjectsInArray: clusteredAnnotations];
    [super removeAnnotations:annotationsToRemove];

What happens is that upon first view, the annotationsToIgnore are are added to the annotations that are going to be displayed by super. However, upon second view, the annotationsToRemove is loaded with the current visible annotations., including the ones that are to be ignored during clustering. Of course, they are added when [super addAnnotations: [annotationsToIgnore allObjects]]; is executed, but as annotationsToIgnore objects are also in the annotationsToRemove, they are basically added at first but removed at the next line. For the third view, it is basically starting with a clean slate., so the annotationsToIgnore are back

A solution to this to change the order of the last two parts of the code above: first do the remove on super and then add all annotations. There is flickering, though, for the annotationsToIgnore

[BotiKis]

Thank you for your contribution!
I've pushed a version with your solution. I'll try to re implement this hole annotation adding once to completely remove the flickering.