一.UIControl
UIControl是UIView的子类，当然也是UIResponder的子类。UIControl对象采用了一种新的事件处理机制，将前一节直接处理的触摸事件转换成简单操作，这样可以无需关心用户访问控件的具体方式。触摸事件到达UIControl对象（由响应者链派遣）后，在UIResponder的方法中（如touchBegan:withEvent）中，UIControl将标准的触摸事件转换为特殊的控件事件，简单的理解就是，UIControl把复杂的触摸事件封装成了简单的易于使用的控件事件。UIControl是诸如UISlider、UISwitch、UIPageControl等控件的父类，它本身也包含了一些属性和方法，一般不直接使用UIControl类，而是使用它的子类。
- (void)UIControlExplain
{
// UIControlEvents 控件响应事件激活条件枚举组
// UIControlState 控件存在形式枚举组
// UIControlContentHorizontalAlignment 控件内容垂直位置信息枚举组
// UIControlContentVerticalAlignment 控件内容水平位置信息枚举组
}
二.UISwitch
- (void)UISwitchExplain
{
UISwitch *firstSwitch = [[UISwitch alloc]initWithFrame:CGRectMake(100, 100, 0, 0)];
// firstSwitch.backgroundColor = [UIColor cyanColor];
// 开关打开时，背景框的填充色
firstSwitch.onTintColor = [UIColor cyanColor];
// 开关关闭时，背景框的填充色
firstSwitch.tintColor = [UIColor redColor];
// 开关小圆点的填充色
firstSwitch.thumbTintColor = [UIColor blueColor];
firstSwitch.on = YES;
//设置开关初始 开、关状态（有无动画）
[firstSwitch setOn:YES animated:YES];
// 加载开关
[self.view addSubview:firstSwitch];
[firstSwitch release];
[firstSwitch addTarget:self action:@selector(switchAction:) forControlEvents:(UIControlEventTouchUpInside)];
UIImageView *imgV = [[UIImageView alloc]initWithFrame:CGRectMake(50,200 , 300, 300)];
imgV.tag = 100;
imgV.image = [UIImage imageNamed:@"W020100317577179692793.jpg"];
[self.view addSubview:imgV];
[imgV release];
}
- (void)switchAction:(UISwitch *)myswitch
{
NSLog(@"%d",myswitch.on);
UIImageView *imgV = [self.view viewWithTag:100];
if (myswitch.on ==1) {
imgV.image = [UIImage imageNamed:@"201TUU7-3.jpg"];
}else
{
imgV.image = [UIImage imageNamed:@"W020100317577179692793.jpg"];
}
}
三.UISlider
- (void)UISliderExplain
{
UISlider *slider = [[UISlider alloc]initWithFrame:CGRectMake(50, self.view.frame.size.width -50 ,300, 100)];
//设置最大值
slider.maximumValue = 8.f;
// 按钮填充色
slider.thumbTintColor = [UIColor orangeColor];
// 划过后的进度条填充色
slider.minimumTrackTintColor = [UIColor redColor];
// 未划过后的进度条填充色
slider.maximumTrackTintColor = [UIColor blueColor];
slider.backgroundColor = [UIColor cyanColor];
// 添加响应事件
[slider addTarget:self action:@selector(sliderAction:) forControlEvents:(UIControlEventValueChanged)];
[self.view addSubview:slider];
[slider release];
UIImageView *imgV = [[UIImageView alloc]initWithFrame:CGRectMake(80, 80, 150, 150)];
imgV.tag = 1000;
NSMutableArray *nArry = [NSMutableArray array];
for (int i = 1; i<8; i++) {
NSString *str= [NSString stringWithFormat:@"huoju_%d.tiff",i];
UIImage *image = [UIImage imageNamed:str];
[nArry addObject:image];
}
imgV.animationImages = nArry;
imgV.animationDuration = 2.f;
imgV.animationRepeatCount = -1;
[imgV startAnimating];
[self.view addSubview:imgV];
[imgV release];
}
- (void)sliderAction:(UISlider *)slider
{
NSLog(@"%f",slider.value);
UIImageView *imgV = [self.view viewWithTag:1000];
if (slider.value!=0) {
imgV.animationDuration = 2/slider.value;
}
[imgV startAnimating];
}
四.UISegmentedControl
- (void)segmentedControlExplain
{
UISegmentedControl *segmentCtrl = [[UISegmentedControl alloc]initWithItems:@[@"1",@"2",@"3"]];
segmentCtrl.frame = CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, 60);
segmentCtrl.backgroundColor = [UIColor cyanColor];
// 初始选中框的index
segmentCtrl.selectedSegmentIndex = 1;
// 填充色
segmentCtrl.tintColor = [UIColor redColor];
// (重写)设置对应index下的标题
[segmentCtrl setTitle:@"首页" forSegmentAtIndex:1];
segmentCtrl.tag= 30;
// [segmentCtrl setImage:[UIImage imageNamed:@"huoju_1.tiff"]forSegmentAtIndex:0];
// 添加点击事件
[segmentCtrl addTarget:self action:@selector(segmentAction:) forControlEvents:(UIControlEventValueChanged)];
[self.view addSubview:segmentCtrl];
[segmentCtrl release];
for (int i = 0; i<2; i++) {
NSArray *arry = @[@"添加",@"删除"];
UIButton *button = [UIButton buttonWithType:(UIButtonTypeCustom)];
button.frame = CGRectMake(50+150*i, 100, 100, 100);
[button setTitle:arry[i] forState:(UIControlStateNormal)];
[button setTitleColor:[UIColor redColor] forState:(UIControlStateNormal)];
[button addTarget:self action:@selector(buttonAction:) forControlEvents:(UIControlEventTouchUpInside)];
button.tag = i;
[self.view addSubview:button];
}
}
- (void)segmentAction:(UISegmentedControl *)segment
{
NSInteger index = segment.selectedSegmentIndex;
NSLog(@"%ld",index);
if (index==0) {
self.view.backgroundColor= [UIColor blueColor];
}else if (index==1) {
self.view.backgroundColor = [UIColor greenColor];
}else{
self.view.backgroundColor = [UIColor blackColor];
}
NSLog(@"%ld",segment.selectedSegmentIndex);
}
- (void)buttonAction:(UIButton *)button
{
NSInteger tag = button.tag;
UISegmentedControl *segment = [self.view viewWithTag:30];
if (tag==0) {
[segment insertSegmentWithTitle:[NSString stringWithFormat:@"%lu",segment.numberOfSegments+1]atIndex:segment.numberOfSegments animated:YES];
} else
{
[segment removeSegmentAtIndex:segment.numberOfSegments-1 animated:YES];
}
}
五.UIPageControl
- (void)UIPageControlExplain
{
UIImageView *imgV = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
imgV.backgroundColor = [UIColor cyanColor];
imgV.image = [UIImage imageNamed:@"W020100317577179692793.jpg"];
imgV.tag = 88;
[self.view addSubview:imgV];
[imgV release];
UIPageControl *pageCtrl = [[UIPageControl alloc]initWithFrame:CGRectMake(50, 500, self.view.frame.size.width-100, 40)];
// 小圆点之间的距离，大小事固定的
// 小圆点可以超出自身frame显示，但超出frame区域的不能响应点击事件
// 小圆点个数
pageCtrl.numberOfPages = 5;
pageCtrl.backgroundColor = [UIColor blackColor];
//当前圆点个数
pageCtrl.currentPage = 1;
//未选择小圆点填充色
pageCtrl.pageIndicatorTintColor = [UIColor blueColor];
// 选中的小圆点填充色
pageCtrl.currentPageIndicatorTintColor = [UIColor redColor];
//添加点击事件
[pageCtrl addTarget:self action:@selector(pageAction:) forControlEvents:(UIControlEventValueChanged)];
[self.view addSubview:pageCtrl];
[pageCtrl release];
}
- (void)pageAction:(UIPageControl *)page
{
NSInteger index = page.currentPage ;
UIImageView *imgV = [self.view viewWithTag:88];
switch (index) {
case 0:
imgV.image = [UIImage imageNamed:@"images (1).jpeg"];
break;
case 1:
imgV.image = [UIImage imageNamed:@"W020100317577179692793.jpg"];
break;
case 2:
imgV.image = [UIImage imageNamed:@"201TUU7-3.jpg"];
break;
default:
break;
}
}
