ios - regiondidchange 在 app load swift 上多次调用

Question

我有一张 map ，当我平移或输入一个位置并导航到它时，我希望运行一个简单的打印功能。然而，我已经完成了这个，当我第一次加载应用程序时，它会多次调用该打印函数，直到它完成放大。有没有办法不计算应用程序加载区域变化的初始值？

Answer 1

终于在这里找到答案http://ask.ttwait.com/que/5556977

private var mapChangedFromUserInteraction = false

private func mapViewRegionDidChangeFromUserInteraction() -> Bool {
let view = self.mapView.subviews[0]
//  Look through gesture recognizers to determine whether this region change is from user interaction
if let gestureRecognizers = view.gestureRecognizers {
    for recognizer in gestureRecognizers {
        if( recognizer.state == UIGestureRecognizerState.Began || recognizer.state == UIGestureRecognizerState.Ended ) {
            return true
        }
    }
}
return false
}

func mapView(mapView: MKMapView, regionWillChangeAnimated animated:    
Bool) {
mapChangedFromUserInteraction =   
mapViewRegionDidChangeFromUserInteraction()
if (mapChangedFromUserInteraction) {
    // user changed map region
}
}

func mapView(mapView: MKMapView, regionDidChangeAnimated animated:   
Bool) {
if (mapChangedFromUserInteraction) {
    // user changed map region
}
}