如何檢測iPhone上首次啟動應用程序我如何才能檢測到第一次發射- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
// if very first launch than perform actionA
// else perform actionB}方法？
3 回答
婷婷同學_
TA貢獻1844條經驗 獲得超8個贊
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
if (![[NSUserDefaults standardUserDefaults] boolForKey:@"HasLaunchedOnce"])
{
[[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"HasLaunchedOnce"];
[[NSUserDefaults standardUserDefaults] synchronize];
}
return YES;}
瀟瀟雨雨
TA貢獻1833條經驗 獲得超4個贊
application:didFinishLaunching:withOptions:
[GBVersionTracking track];
[GBVersionTracking isFirstLaunchEver];
[GBVersionTracking isFirstLaunchForVersion];[GBVersionTracking currentVersion];[GBVersionTracking previousVersion];[GBVersionTracking versionHistory];
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