4
我喜欢确定用户是否在首选项应用中关闭了背景抓取。如果他关掉了我的应用程序将无法正常工作。如何检查iOS上是否启用了BackgroundFetching?
我喜欢确定用户是否在首选项应用中关闭了背景抓取。如果他关掉了我的应用程序将无法正常工作。如何检查iOS上是否启用了BackgroundFetching?
下面是代码做到这一点:
if ([[UIApplication sharedApplication] backgroundRefreshStatus] == UIBackgroundRefreshStatusAvailable) {
NSLog(@"Background fetch is available for the app.");
}else if([[UIApplication sharedApplication] backgroundRefreshStatus] == UIBackgroundRefreshStatusDenied)
{
NSLog(@"Background fetch for this app or for the whole system is disabled.");
}else if([[UIApplication sharedApplication] backgroundRefreshStatus] == UIBackgroundRefreshStatusRestricted)
{
NSLog(@"Background updates are unavailable and the user cannot enable them again. For example, this status can occur when parental controls are in effect for the current user.");
}