如何保存UISlider值？

Question

我怎样才能保存UISlider的值？我试过这个，但它不起作用：

-(IBAction)save {  
        slider1i = slider1.value;
        NSUserDefaults *slider1save = [NSUserDefaults standardUserDefaults];
        [slider1save setInteger:slider1i forKey:@"slider1key"];
        [slider1save synchronize];
}

slider1i是NSinteger，slider1是UISlider ...

你能帮我吗？

Answer 1

正如用户698952所说，UISlider的value属性是浮动的。但我会像这样使用setFloat：

    slider1i = slider1.value;
    NSUserDefaults *slider1save = [NSUserDefaults standardUserDefaults];
    [slider1save setFloat:slider1i forKey:@"slider1key"];
    [slider1save synchronize];

Answer 2

slider1.value是float值，所以你首先需要在NSString或NSNumber中转换它以便保存它.....使它成为一个对象

-(IBAction)save {  
        NSNumber *sliderValue = [NSNumber numberWithFloat:slider1.value];
        NSUserDefaults *slider1save = [NSUserDefaults standardUserDefaults];
        [slider1save setObject:sliderValue forKey:@"slider1key"];
        [slider1save synchronize];
}

感谢