赋值使指针从整数而不进行强制转换

assignment makes pointer from integer without a cast(赋值使指针从整数而不进行强制转换)

问题描述

我不明白这里有什么问题！在我编译它之后，总是告诉我:赋值使指针从整数而不进行强制转换"我不知道是什么问题！请让我，谢谢.

I don't understand what is problem here! after I compile it, always show me: "assignment makes pointer from integer without a cast" I don't know what is the problem! Please let me, thanks.

保存

 NSUserDefaults *percentChecker = [NSUserDefaults standardUserDefaults]; 
 [percentChecker setInteger:0 forKey:percentCheckerSaveKey];

<小时>

加载

NSUserDefaults *percentChecker = [NSUserDefaults standardUserDefaults]; 
NSString *percentString;

//Alert! 
percentString = [percentChecker integerForKey:percentCheckerSaveKey];

推荐答案

这正是它告诉你的.percentString 是一个指针，但 integerForKey: 返回一个整数.将该整数分配给指针是在从没有强制转换的整数中创建指针".为什么要保存一个整数并稍后尝试将其作为字符串加载?

It's exactly what it's telling you. percentString is a pointer, but integerForKey: returns an integer. Assigning that integer to a pointer is making a "pointer from an integer without a cast". Why are you saving an integer and trying to load it later as a string?

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