试图在NSInteger中存储浮点数（或了解如何将其存储在其他东西中）

Question

I am trying to store the height of the screen in NSInteger .

NSInteger *screenHeight = self.view.frame.size.height;

I also tried to store it in NSString and NSNumber , but there is always an error that says Initializing 'NSInteger ' (aka 'int*') with an expression of incompatible type 'CGFloat' (aka 'float')*. I will go back to get the screen size from whatever I store it in later in the code, but what can I store a float in?

Answer 1

NSInteger is typdef of basic int .

You need to use

NSInteger screenHeight = self.view.frame.size.height;

* Note: self.view.frame.size.height returns you float so why not to use float.

Also unless you really want a pointer to an integer never use NSInteger*

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Edit:

In case you want NSNumber then

NSNumber *screenHeight = @(self.view.frame.size.height); //box the value to NSNumber

If you want it an NSString then

NSString *screenHeight = [NSString stringWithFormat:@"%f", self.view.frame.size.height];

Answer 2

删除'*'NSInteger是原始类型。

NSInteger screenHeight = self.view.frame.size.height;

Answer 3

如果您需要将其存储为对象（即将其添加到数组），请使用

NSNumber *screenHeight =[NSNumber numberWithFloat:self.view.frame.size.height];