由于未捕获的异常“ NSInvalidArgumentException”而终止应用程序，原因：“-[MKUserLocation标记]：

Question

i just compare two values but sometime app crash. How to handle it.

NSString *  markerid = [_selectedCoordinate objectForKey:@"markerid"];
    for(CustomAnnotations *annotation in _mapView.annotations){
        if(annotation.tag == [markerid integerValue]){
            [_mapView selectAnnotation:annotation animated:NO];
            return;
        }
    }

Answer 1

Map annotations contains the user location annotations as well, either check [annotation class] != [MKUserLocation class] or [annotation class] == [CustomAnnoation class] then get the tag of the annotation

NSString *  markerid = [_selectedCoordinate objectForKey:@"markerid"];
for(CustomAnnotations *annotation in _mapView.annotations){
    if([annotation class] != [MKUserLocation class]) {
        if(annotation.tag == [markerid integerValue]) {
            [_mapView selectAnnotation:annotation animated:NO];
            return;
        }
    }
}