如何在iOS中将滑块值转换为整数？

Question

How to convert float from 0..1 to integer 0 to 255 in xcode for ios? thanx!

Answer 1

float number = [slider value];
int value = (int)(number * 255)

Answer 2

The value property of a UISlider is always a float . In addition to Nico's answer, you could also set the bounds on the slider to what you want by

[slider setMinimumValue:0.0];
[slider setMaximumValue:255.0];

Then, whenever you call slider.value , cast to an int by

(int)slider.value

Answer 3

int value = (int)([slider value] * 255)