iOS 判断是否开启系统通知权限
if (@available(iOS 10 , *)){
weakify(self);
[[UNUserNotificationCenter currentNotificationCenter] getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) {
if (settings.authorizationStatus == UNAuthorizationStatusDenied){
// 没权限
}
}];
}else{
UIUserNotificationSettings * setting = [[UIApplication sharedApplication] currentUserNotificationSettings];
if (setting.types == UIUserNotificationTypeNone) {
// 没权限
}
}
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