IOS開發—IOS 8 中設定applicationIconBadgeNumber和訊息推送

標籤：

摘要

在IOS7中設定applicationIconBadgeNumber不會有什麼問題，但是直接在IOS8中設定applicationIconBadgeNumber會報錯

因為在IOS8中要想設定applicationIconBadgeNumber，需要使用者的授權，在IOS8中，需要加上下面的代碼：

 

UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge categories:nil];[[UIApplication sharedApplication] registerUserNotificationSettings:settings];

但是這兩句如果是在IOS7的系統中啟動並執行話就會報錯，所以需要先判斷IOS的版本，完整代碼如下： 

 

float version = [[[UIDevice currentDevice] systemVersion] floatValue];    if (version >= 8.0) {    UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge categories:nil];    [[UIApplication sharedApplication] registerUserNotificationSettings:settings];}

如果是註冊訊息推送的話，需要這樣寫： 

float version = [[[UIDevice currentDevice] systemVersion] floatValue];if (version >= 8.0) {    UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge categories:nil];    [[UIApplication sharedApplication] registerUserNotificationSettings:settings];    [application registerForRemoteNotifications];}

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IOS開發—IOS 8 中設定applicationIconBadgeNumber和訊息推送