CODEWITHSUNDEEP
iphonemkmapviewmkannotation
bp581
bp581

Reputation: 869

MapView Custom annotation drop

I am trying to create a custom annotation for the map. The problem I have is , I can't make the annotation drop one after the other. All pins drop down at the same time. Here is the delegate code for didAddAnnotations. Can you help me to rewrite the code so that I can make the custom annotations drop one after the other..just like it happens when we use default annotations. Thanks in advance....!!!!

- (void) mapView:(MKMapView *)mapView didAddAnnotationViews:(NSArray *)views {

    CGRect visibleRect = [mapView annotationVisibleRect]; 

    for (MKAnnotationView *view in views) {
        CGRect endFrame = view.frame;

        CGRect startFrame = endFrame;
        startFrame.origin.y = visibleRect.origin.y - startFrame.size.height;
        view.frame = startFrame;

        [UIView beginAnimations:@"drop" context:NULL]; 
        [UIView setAnimationDuration:1];

        view.frame = endFrame;

        [UIView commitAnimations];
    } // end of for 
} // end of delegate

Upvotes: 3

Views: 1137

Answers (1)

omz
omz

Reputation: 53561

You could add a delay that becomes a little longer in each iteration of your loop, like this:

double delay = 0.0;
for (MKAnnotationView *view in views) {
    CGRect endFrame = view.frame;
    CGRect startFrame = endFrame;
    startFrame.origin.y = visibleRect.origin.y - startFrame.size.height;
    view.frame = startFrame;
    [UIView beginAnimations:@"drop" context:NULL];
    [UIView setAnimationDuration:1.0];
    [UIView setAnimationDelay:delay];
    view.frame = endFrame;
    [UIView commitAnimations];
    delay += 0.1;
}

Upvotes: 3

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