UIControl

UIControl 控制类

主要学习了分段控制器、滑块控制器、页码控制器、开关、步进控制器

一、分段控制器UISegmentedControl

UISegmentedControl *seg = [[UISegmentedControl alloc] initWithItems:@[@"消息", @"电话", @"微信"]];

seg.frame = CGRectMake(100, 100, 200, 40);

[self.view addSubview:seg];

[seg release];

选中分段下标

seg.selectedSegmentIndex = 0;

 背景颜色

 seg.backgroundColor = [UIColor blackColor];

 渲染颜色

seg.tintColor = [UIColor lightGrayColor];

  seg.layer.cornerRadius = 5;

  seg.clipsToBounds = YES;

插入新的分段

  [seg insertSegmentWithTitle:@"陌陌" atIndex:2 animated:YES];

 添加响应事件(通过下标值的变化触发方法)

[seg addTarget:self action:@selector(segAction:) forControlEvents:UIControlEventValueChanged];

二、滑块控制器UISlider

UISlider *sl = [[UISlider alloc] initWithFrame:CGRectMake(50, 50, 200, 50)];

sl.backgroundColor = [UIColor yellowColor];

[self.view addSubview:sl];

[sl release];

 颜色设置

划过距离的颜色(滑块左)

sl.minimumTrackTintColor = [UIColor blackColor];

 未划过距离的颜色(滑块右)

sl.maximumTrackTintColor = [UIColor redColor];

 滑块颜色

sl.thumbTintColor = [UIColor greenColor];

添加响应事件

[sl addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventValueChanged];

 滑动范围

最小值

sl.minimumValue = -100;

最大值

sl.maximumValue = 1000;

更新滑块起始点

sl.value = -100;

三、页码控制器

UIPageControl *pc = [[UIPageControl alloc] initWithFrame:CGRectMake(50, 150, 100, 50)];

pc.backgroundColor = [UIColor orangeColor];

[self.view addSubview:pc];

[pc release];

页数

pc.numberOfPages = 4;

当前页

pc.currentPage = 3;

 颜色

页码颜色

pc.pageIndicatorTintColor = [UIColor redColor];

 当前页颜色

pc.currentPageIndicatorTintColor = [UIColor greenColor];

 响应事件

[pc addTarget:self action:@selector(pageAction:) forControlEvents:UIControlEventValueChanged];

四、UISwitch开关

UISwitch *sw = [[UISwitch alloc] initWithFrame:CGRectMake(250, 150, 100, 50)];

sw.backgroundColor = [UIColor whiteColor];

[self.view addSubview:sw];

[sw release];

 开关属性

sw.on = YES;

 开启时颜色

sw.onTintColor = [UIColor redColor];

关闭时边框颜色

sw.tintColor = [UIColor blackColor];

按钮颜色

sw.thumbTintColor = [UIColor blackColor];

响应方法

[sw addTarget:self action:@selector(switchAction:) forControlEvents:UIControlEventValueChanged];

五、步进控制器stepper

UIStepper *stepper = [[UIStepper alloc] initWithFrame:CGRectMake(100, 500, 100, 100)];

stepper.backgroundColor = [UIColor cyanColor];

[self.view addSubview:stepper];

最小值

stepper.minimumValue = 0;

最大值

stepper.maximumValue = 20;

 value 控制初值

stepper.value = 1;

 stepValue每次变化的大小

stepper.stepValue = 4;

 是否显示每次值变化

stepper.continuous = YES;

 按住时 是否自动变化

stepper.autorepeat = YES;

 是否允许从max回到min

stepper.wraps = YES;

添加事件

[stepper addTarget:self action:@selector(stepperAction:) forControlEvents:UIControlEventValueChanged];