iOS 只取float类型值的小数点后两位
[self.btnEcosetTitle:[NSStringstringWithFormat:@"%0.1f",model.targetTemperature]forState:UIControlStateNormal]; float floatValue=123.0000NSString *strValue=[NSString stringWithFormat:@"%0
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[self.btnEco setTitle:[NSString stringWithFormat:@"%0.1f",model.targetTemperature] forState:UIControlStateNormal];
float floatValue=123.0000
NSString *strValue=[NSString stringWithFormat:@"%0.2f", floatValue];
不用截取字符的方法,取两位小数得到123.00
需要小数点后n位数字就%0.nf
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