Question

objective-c xcode5 中如何获取label中的字符串?

目的是为了实现点击按钮,让label里面的字符串变大写

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Answer 1

NSString *newString = @"123";
1、字符串转int
int intString = [newString intValue];

2、int转字符串
NSString *stringInt = [NSString stringWithFormat:@"%d",intString];

3、字符串转float
float floatString = [ newString floatValue];

6、float转字符串
NSString *stringFloat = [NSString stringWithFormat:@"%f",intString];