iOS 8 CLLocationManager enterRegion：如果使用 requestWhenInUseAuthorization，則不會被調用

Question

我正在嘗試在 iOS 8 中為自定義區域調用委托方法 locationManager:didEnterRegion。 這是代碼：

self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.delegate = self;
if ([self.locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)]) {
    [self.locationManager requestWhenInUseAuthorization];
}

CLCircularRegion *region = [[CLCircularRegion alloc] initWithCenter:CLLocationCoordinate2DMake(20, 20) radius:1000 identifier:@"asda"];
region.notifyOnEntry = YES;
region.notifyOnExit = YES;
[self.locationManager startMonitoringForRegion:region];

它確實調用了locationManager:didStartMonitoringForRegion方法，但它不調用“進入”或“退出”區域方法。

更奇怪的是，如果我對 locationManager 使用 requestAlwaysAuthorization，它確實可以工作。 但我需要讓它與“使用時”一起工作。

注意：在 iOS7 中，它適用於 WhenInUse 和 Always Authorization 方法。

Answer 1

區域監控 - 它不適用於requestWhenInUseAuthorization

檢查 Apple Docs：“ .. “when-in-use” ... Apps cannot use any services that automatically relaunch the app, such as region monitoring or the significant location change service “

您必須調用requestAlwaysAuthorization ！！！ https://developer.apple.com/library/ios/documentation/CoreLocation/Reference/CLLocationManager_Class/index.html#//apple_ref/occ/instm/CLLocationManager/requestWhenInUseAuthorization