警告：傳遞'setOn：'的參數1使得指針中的整數沒有投射

Question

我是新來的Objective C，所以我很抱歉如果這是一個愚蠢的問題。我在下面的代碼中得到這個錯誤。

我使用recurringBool爲全局變量

//Declared in the AppDelegate.h 
extern BOOL *recurringBool; 

//Defined in the AppDelegate.m 
BOOL *recurringBool; 

// In another class this method sets recurringBool 
- (IBAction)MakeRecurring:(id)sender { 
    UISwitch *Switch = (UISwitch *)sender; 
    //this is where the 1st error is occurring. aNetS is a UISwitch 
    recurringBool = Switch.on; 
     **//warning: assignment makes pointer from integer without a cast** 
} 

//And in another method aNetS is set to recurringBool; 
//this is where the second error is occurring. aNetS is a UISwitch 
aNetS.on = recurringBool; 
    //warning: passing argument 1 of 'setOn:' makes integer from pointer without a cast 

我不知道爲什麼我得到這些錯誤recurringBool不是整數。所以我必須假設我錯了。任何幫助將不勝感激。

Answer 1

從您的BOOL聲明中刪除*。 BOOL不是一個指針。

Answer 2

BOOL是原始類型，而不是一個Objective-C對象。您通常使用它原始的，如int或float，而不是通過指針。所以申報BOOL recurringBool;而不是BOOL *recurringBool;。