iOS判断通知中心是否允许程序推送通知

iOS 8.0后，获取推送通知类型改了，iOS 8.0的推送通知类型 是 UIUserNotificationType ，iOS 7.0 的推送通知类型 是UIRemoteNotificationType，所以需要先判断iPhone的系统版本，大于等于8.0以上的通过

//获取通知中心 是否 允许程序通知消息的值，7.0的用 
 UIUserNotificationSettings *setting = [[UIApplication sharedApplication] currentUserNotificationSettings];

// 获取通知中心 是否 允许程序通知消息的值。
UIRemoteNotificationType type = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];

推送通知类型有：

UIUserNotificationTypeNone    = 0,      // the application may not present any UI upon a notification being received

UIUserNotificationTypeBadge  = 1 << 0, // the application may badge its icon upon a notification being received   中文解释就是 App右上角标推送通知消息的数量

UIUserNotificationTypeSound  = 1 << 1, // the application may play a sound upon a notification being received    中文解释就是 App推送通知时的声音设置

UIUserNotificationTypeAlert  = 1 << 2, // the application may display an alert upon a notification being received  中文解释就是 App推送通知时的警报设置

如果通知中心不允许推送的话，types的值肯定为0，所以对应推送类型为UIUserNotificationTypeNone，贴出判断中心是否允许程序推送通知的代码

if ([[UIDevice currentDevice].systemVersion floatValue]>=8.0f) {

UIUserNotificationSettings *setting = [[UIApplication sharedApplication] currentUserNotificationSettings];

if (UIUserNotificationTypeNone == setting.types) {
NSLog(@"推送关闭 8.0");
}
else
{
NSLog(@"推送打开 8.0");
}
}
else
{
UIRemoteNotificationType type = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];

if(UIRemoteNotificationTypeNone == type){
NSLog(@"推送关闭");
}
else
{
NSLog(@"推送打开");
}
}