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我有一个问题,你可以UISlidersIOS什么范围内定制它们?
我想在iPhone中实现一个类似“解锁滑块”的滑块。 但似乎 IOS 没有提供任何“标准”方式来实现这样的滑块?

是否可以实现标准 UISlider 并将其设置为 min.value (0.0) 和 maximum.value (0.5)。如果滑块“击中”一个大于 (0.01) 的值,它应该自动拉回最小值 (0.0)。
如果它达到最大值(0.5),启动一个事件,然后自动拉回 min.value?

感谢所有帮助!

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1 回答 1

3

尝试这个。我在我的项目中使用它

滑块.h

@class Slider;
@protocol SliderDelegate <NSObject>
@required
- (void) slideEnd;
@end
@interface Slider : UISlider
@property (nonatomic, weak) id<SliderDelegate> delegate;

滑块.m

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
if (self) {
    [self setMinimumTrackImage:YOUR_MINIMUM_TRACK_IMG forState:UIControlStateNormal];
    [self setMaximumTrackImage:YOUR_MAXIMUM_TRACK_IMG  forState:UIControlStateNormal];
    [self setThumbImage:YOUR_THUMB_IMAGE];
    self.minimumValue = 0.0;
    self.maximumValue = 1.0;
    self.value = 0.0;
    [self addTarget:self action:@selector(moved:) forControlEvents:UIControlEventTouchUpInside];
    [self addTarget:self action:@selector(moved:) forControlEvents:UIControlEventTouchUpOutside];
}
    return self;
}

- (void) moved:(UISlider *) sender
{
    if (self.value != 1.0) {
        [self setValue: 0 animated: YES];

    } else {
        [[self delegate] slideEnd];
        [self setValue: 0 animated: YES];
    }
}

像这样实现它:

[self setSlider:[[Slider alloc] initWithFrame:CGRectMake(645, 25, 120, 50)]];
[[self view] addSubview:[self slider]];
[[self view] bringSubviewToFront:[self slider]];
[[self slider] setDelegate:self];

不要忘记实现委托方法:

- (void)slideEnd {
    // Things you want to do when slide ends
}
于 2013-07-25T13:20:16.950 回答