從appdelegate在viewcontroller中設置BOOL

Question

我已經在標題的AppDelegate中定義了BOOL。

AppDelegate.h

BOOL myBool;

@property(nonatomic) BOOL myBool;

並合成它

@synthesize myBool;

我如何從ViewController設置他的值（true或false）？

Answer 1

嘗試這個：

MyAppDelegate* myAppDelegate = (MyAppDelegate*)[[UIApplication sharedApplication] delegate];
myAppDelegate.myBool = true;

Answer 2

(MyAppDelegate *)[[UIApplication sharedApplication] delegate].myBool = YES;