Map location Error Exception: ' Invalid region

1 Do map positioning today, find this problem, call the following function, there is a problem

  Mkcoordinateregion region = Mkcoordinateregionmake (_currentlocationcoordinate, Mkcoordinatespanmake (ZoomLevel, Zoomlevel));   [_mapview Setregion:[_mapview regionthatfits:region] animated:yes];

Exception: ' Invalid region <center:+inf, +0.00000000 span:+1.00000000, +0.50000000> ' when trying to display the map
2 degrees Niang a bit, the original is out of range, plus range judgment

if ((Region.center.latitude >= -90) && (region.center.latitude <=) && (region.center.longitude >= -180) && (region.center.longitude <=)) {        [_mapview setregion:[_mapview regionthatfits:region] Animated:yes];    }    else{        NSLog (@ "Invilid region");    }

3 The fundamental, data error, and later found the reason, latitude 118, wrong, has exceeded the range-90<=latitude<=90 -180<=longtitude<=180

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Map location Error Exception: ' Invalid region