标签：des cWeb style blog http io ar color os
先告诉大家一个好消息, 今天我的博客正式开通了,欢迎大家的光临.
今天我们学习了UIControl以及他的一些子类并且也学习了一些常用的方法其中他的子类有UIButton、UIDatePicker、UIPageControl、UISegmentedControl、UITextField、UISlider、UISwitch。其中今天我们学习的有UISegmentedControl、UISlider和UISwitch。下面我就简单地用几行代码来说明其用途，如果有疑问或者问题请大家不吝赐教：
1.UIcontrol：UIView的子类，是所有控制控件的基类
control = [[UIControl alloc] initWithFrame:CGRectMake(50, 350, 200, 200)];
control.backgroundColor = [UIColor blackColor];
[control addTarget:self action:@selector(control:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:control];
[control release];
2.下面是UIslider的例子：
slider = [[UISlider alloc] initWithFrame:CGRectMake(0, 100, 220, 31)]; NSLog(@"%@", slider); slider.backgroundColor = [UIColor cyanColor]; [slider addTarget:self action:@selector(valueChange:) forControlEvents:UIControlEventValueChanged]; //默认的value取值范围时0-1; //如果最小值比最大值大,slider不能滑动 slider.minimumValue = 0; slider.maximumValue = 255; [self.view addSubview:slider]; [slider release]; slider1 = [[UISlider alloc] initWithFrame:CGRectMake(0, 151, 220, 31)]; NSLog(@"%@", slider); slider1.backgroundColor = [UIColor cyanColor]; [slider1 addTarget:self action:@selector(valueChange:) forControlEvents:UIControlEventValueChanged]; slider1.minimumValue = 0; slider1.maximumValue = 255; [self.view addSubview:slider1]; [slider1 release]; slider2 = [[UISlider alloc] initWithFrame:CGRectMake(0, 200, 220, 31)]; NSLog(@"%@", slider); slider2.backgroundColor = [UIColor cyanColor]; [slider2 addTarget:self action:@selector(valueChange:) forControlEvents:UIControlEventValueChanged]; slider2.minimumValue = 0; slider2.maximumValue = 255; [self.view addSubview:slider2]; [slider2 release];
3.下面我们来做个练习：通过改变UISlider进而用UILabel来显示其示数，并由此来随机改变UIControl区域的颜色
- (void)viewDidLoad { [super viewDidLoad]; //UIControl:UIView的子类,是所有控制控件的基类 control = [[UIControl alloc] initWithFrame:CGRectMake(50, 350, 200, 200)]; control.backgroundColor = [UIColor blackColor]; [control addTarget:self action:@selector(control:) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:control]; [control release]; //UISegmentedControl:分段控制器 //注意点 //1.items用于segmentControl的文本显示,所以items数组中的元素必须是NSString的类型或UIImage类型的 //2.分段的下标从0开始 //设置某个分段的宽度,如果没有被设置宽度,每个分段宽度相等 // [segment setWidth:200 forSegmentAtIndex:1]; NSArray *array = @[@"是", @"否"]; UISegmentedControl *segment = [[UISegmentedControl alloc] initWithItems:array]; segment.frame = CGRectMake(0, 40, 320, 40); [segment addTarget:self action:@selector(changeTitle:) forControlEvents:UIControlEventValueChanged]; segment.tintColor = [UIColor blackColor]; //设置分段控制器的初始选中值(不会触发关联的方法) segment.selectedSegmentIndex = 0; //设置分段的图片 UIImage *image = [UIImage imageNamed:@"1"]; [segment setImage:image forSegmentAtIndex:0]; [self.view addSubview:segment]; [segment release]; //UISlider:滑块控件,继承于UIControl //slider:控件的高度是31pt,不能改变 //frame:slider的可触摸区域 label = [[UILabel alloc] initWithFrame:CGRectMake(240, 100, 70, 31)]; label.textColor = [UIColor blackColor]; label.text = @"0"; [self.view addSubview:label]; [label release]; label1 = [[UILabel alloc] initWithFrame:CGRectMake(240, 151, 70, 31)]; label1.textColor = [UIColor blackColor]; label1.text = @"0"; [self.view addSubview:label1]; [label1 release]; label2 = [[UILabel alloc] initWithFrame:CGRectMake(240, 200, 70, 31)]; label2.textColor = [UIColor blackColor]; label2.text = @"0"; [self.view addSubview:label2]; [label2 release]; slider = [[UISlider alloc] initWithFrame:CGRectMake(0, 100, 220, 31)]; NSLog(@"%@", slider); slider.backgroundColor = [UIColor cyanColor]; [slider addTarget:self action:@selector(valueChange:) forControlEvents:UIControlEventValueChanged]; //默认的value取值范围时0-1; //如果最小值比最大值大,slider不能滑动 slider.minimumValue = 0; slider.maximumValue = 255; [self.view addSubview:slider]; [slider release]; slider1 = [[UISlider alloc] initWithFrame:CGRectMake(0, 151, 220, 31)]; NSLog(@"%@", slider); slider1.backgroundColor = [UIColor cyanColor]; [slider1 addTarget:self action:@selector(valueChange:) forControlEvents:UIControlEventValueChanged]; slider1.minimumValue = 0; slider1.maximumValue = 255; [self.view addSubview:slider1]; [slider1 release]; slider2 = [[UISlider alloc] initWithFrame:CGRectMake(0, 200, 220, 31)]; NSLog(@"%@", slider); slider2.backgroundColor = [UIColor cyanColor]; [slider2 addTarget:self action:@selector(valueChange:) forControlEvents:UIControlEventValueChanged]; slider2.minimumValue = 0; slider2.maximumValue = 255; [self.view addSubview:slider2]; [slider2 release]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } - (void)changeTitle:(UISegmentedControl *)title { if (title.selectedSegmentIndex == 0) { [title setTitle:@"否" forSegmentAtIndex:0]; [title setTitle:@"是" forSegmentAtIndex:1]; } else { [title setTitle:@"否" forSegmentAtIndex:1]; [title setTitle:@"是" forSegmentAtIndex:0]; } } - (void)valueChange:(UISlider *)value { NSLog(@"%f", value.value); if (value == slider) { label.text = [NSString stringWithFormat:@"%.2f", value.value]; } else if (value == slider1) { label1.text = [NSString stringWithFormat:@"%.2f", value.value]; } else { label2.text = [NSString stringWithFormat:@"%.2f", value.value]; } control.backgroundColor = [UIColor colorWithRed:[label.text integerValue] / 255. green:[label1.text integerValue] / 255. blue:[label2.text integerValue] / 255. alpha:1.0]; } - (void)control:(UIControl *)control1 { float a = arc4random() % 256; float b = arc4random() % 256; float c = arc4random() % 256; control1.backgroundColor = [UIColor colorWithRed:a / 255.0 green:b / 255.0 blue:c / 255.0 alpha:1.0]; label.text = [NSString stringWithFormat:@"%.2f", a]; label1.text = [NSString stringWithFormat:@"%.2f", b]; label2.text = [NSString stringWithFormat:@"%.2f", c]; // slider.value = [label.text floatValue]; // slider1.value = [label1.text floatValue]; // slider2.value = [label2.text floatValue]; //设置slider的value,并且可以指定是否加载动画,让整个过程更自然 [slider setValue:a animated:YES]; [slider1 setValue:b animated:YES]; [slider2 setValue:c animated:YES]; }
这个便是上面实现的结果，有什么问题希望大家提出哈。
4.对于UISwitch我们今天并没有学习多少，老师只是简单地提了下，下面就和大家分享下其具体做法
//UISwitch,开关控件,继承于UIControl //UISwitch,有固定的大小,宽51,高31 //设置Switch的状态 UISwitch *swichControl = [[UISwitch alloc] initWithFrame:CGRectMake(40, 40, 100, 100)]; swichControl.on = YES; [swichControl addTarget:self action:@selector(changeCondition:) forControlEvents:UIControlEventValueChanged]; [self.view addSubview:swichControl]; [swichControl release];
以上便是今天上课的主要内容了，希望可以和大家共同进步，一起学习。
下面附上今天的作业练习：
1.使?用UISegmentedControl切换登录界?面、注册界?面,找回密码界
?面。
注:UISegmentedControl放在屏幕最上?方,登录、注册、找回密码 界?面紧接着UISegmentedControl下?方显?示。
- (void)viewDidLoad { [super viewDidLoad]; UISegmentedControl *segment = [[UISegmentedControl alloc] initWithItems:@[@"登陆界面", @"注册界面", @"找回密码界面"]]; segment.frame = CGRectMake(0, 20, 320, 30); [segment addTarget:self action:@selector(change:) forControlEvents:UIControlEventValueChanged]; [self.view addSubview:segment]; [segment release]; } - (void)change:(UISegmentedControl *)segmented { for (UIView *view in self.view.subviews) { NSLog(@"%@", view); NSLog(@"%@", segmented); if (view != segmented) { [view removeFromSuperview]; } } switch (segmented.selectedSegmentIndex) { case 0: { pass *password = [[pass alloc] init]; [self.view addSubview:password]; [password release]; break; } case 1: { zhuce *zhu = [[zhuce alloc] init]; [self.view addSubview:zhu]; [zhu release]; break; } case 2: { findPassWord *find = [[findPassWord alloc] init]; [self.view addSubview:find]; [find release]; } default: break; } }
- (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { self.frame = CGRectMake(0, 50, 320, 568); UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(40, 70, 60, 30)]; label.text = @"用户名"; label.backgroundColor = [UIColor redColor]; label.textColor = [UIColor blackColor]; label.textAlignment = NSTextAlignmentRight; [self addSubview:label]; [label release]; UITextField *field = [[UITextField alloc] initWithFrame:CGRectMake(120, 70, 180, 30)]; field.borderStyle = UITextBorderStyleRoundedRect; field.keyboardType = UIKeyboardTypeNumberPad; field.placeholder = @"请输入用户名或邮箱"; field.delegate = self; [self addSubview:field]; [field release]; //设置密码 UILabel *passWord = [[UILabel alloc] initWithFrame:CGRectMake(40, 120, 60, 30)]; passWord.text = @"密码"; passWord.backgroundColor = [UIColor redColor]; passWord.textColor = [UIColor blackColor]; passWord.textAlignment = NSTextAlignmentRight; [self addSubview:passWord]; [passWord release]; UITextField *pass = [[UITextField alloc] initWithFrame:CGRectMake(120, 120, 180, 30)]; pass.placeholder = @"请输入密码"; pass.secureTextEntry = YES; pass.keyboardType = UIKeyboardTypeNumbersAndPunctuation; pass.borderStyle = UITextBorderStyleRoundedRect; pass.delegate = self; [self addSubview:pass]; [pass release]; //设置登陆按钮 UIImage *image = [UIImage imageNamed:@"1"]; UIButton *loading = [UIButton buttonWithType:UIButtonTypeCustom]; loading.frame = CGRectMake(60, 180, 70, 30); [loading setBackgroundImage:image forState:UIControlStateNormal]; [loading setTitle:@"登陆" forState:UIControlStateNormal]; [loading setTitleColor:[UIColor blackColor] forState:UIControlStateNormal]; [self addSubview:loading]; UIButton *cencle = [UIButton buttonWithType:UIButtonTypeCustom]; cencle.frame = CGRectMake(200, 180, 70, 30); [cencle setBackgroundImage:image forState:UIControlStateNormal]; [cencle setTitle:@"取消" forState:UIControlStateNormal]; [cencle setTitleColor:[UIColor blackColor] forState:UIControlStateNormal]; [self addSubview:cencle]; } return self; }
#import "zhuce.h" @implementation zhuce - (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { self.frame = CGRectMake(0, 50, 320, 568); // Initialization code NSArray *array = @[@"邮箱", @"请输入邮箱", @"地址", @"请输入地址", @"电话", @"请输入电话", @"账号", @"请输入账号", @"密码", @"请输入密码", @"确认密码", @"请再次输入密码"]; int a = 0; int b = 0; for (int i = 0; i < 6; i++) { UILabel *emailLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 50 + i * 50, 70, 30)]; emailLabel.text = array[b]; emailLabel.textAlignment = NSTextAlignmentRight; [self addSubview:emailLabel]; [emailLabel release]; UITextField *field = [[UITextField alloc] initWithFrame:CGRectMake(110, 50 + 50 * i, 160, 30)]; field.placeholder = array[b + 1]; field.borderStyle = UITextBorderStyleRoundedRect; [self addSubview:field]; [field release]; field.delegate = self; a++; b = a * 2; } UIButton *password = [UIButton buttonWithType:UIButtonTypeSystem]; [password setTitle:@"登陆" forState:UIControlStateNormal]; password.frame = CGRectMake(60, 350, 60, 30); [self addSubview:password]; UIButton *cancel = [UIButton buttonWithType:UIButtonTypeSystem]; [cancel setTitle:@"登陆" forState:UIControlStateNormal]; cancel.frame = CGRectMake(180, 350, 60, 30); [self addSubview:cancel]; } return self; }
#import "findPassWord.h" @implementation findPassWord - (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { // Initialization code self.frame = CGRectMake(0, 50, 320, 568); UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(30, 60, 50, 30)]; label.text = @"邮箱"; [self addSubview:label]; [label release]; UITextField *field = [[UITextField alloc] initWithFrame:CGRectMake(100, 60, 200, 30)]; field.placeholder = @"请输入邮箱或电话"; field.borderStyle = UITextBorderStyleRoundedRect; field.delegate = self; [self addSubview:field]; [field release]; UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem]; button.frame = CGRectMake(100, 120, 60, 30); [button setTitle:@"确定" forState:UIControlStateNormal]; [self addSubview:button]; UIButton *button1 = [UIButton buttonWithType:UIButtonTypeSystem]; button1.frame = CGRectMake(160, 120, 60, 30); [button1 setTitle:@"取消" forState:UIControlStateNormal]; [self addSubview:button1]; } return self; }
效果图为：
以上图片实现了简单窗口之间的切换。
对了今天还讲了一个简单地动画制作，在制作过程中，首先要找到素材，也就是简单的几张图片，将其放到Xcode中去利用UISwitch进行图片的连续切换，从而实现动画，下面开始进入代码部分：
- (void)viewDidLoad { [super viewDidLoad]; beginButton = [UIButton buttonWithType:UIButtonTypeCustom]; beginButton.frame = CGRectMake(70, 500, 60, 30); [beginButton setTitle:@"开始" forState:UIControlStateNormal]; [beginButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal]; [beginButton addTarget:self action:@selector(begin:) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:beginButton]; stopButton = [UIButton buttonWithType:UIButtonTypeCustom]; stopButton.frame = CGRectMake(180, 500, 60, 30); [stopButton setTitle:@"停止" forState:UIControlStateNormal]; [stopButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal]; [stopButton addTarget:self action:@selector(begin:) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:stopButton]; label = [[UILabel alloc] initWithFrame:CGRectMake(70, 450, 300, 30)]; [self.view addSubview:label]; [label release]; UISlider *slider = [[UISlider alloc] initWithFrame:CGRectMake(0, 400, 300, 31)]; slider.backgroundColor = [UIColor blueColor]; [slider addTarget:self action:@selector(chang:) forControlEvents:UIControlEventValueChanged]; [self.view addSubview:slider]; [slider release]; imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"huoju_1.tiff"]]; imageView.bounds = CGRectMake(0, 0, 79 * 2, 106 * 2); imageView.center = CGPointMake(self.view.center.x, self.view.center.y - 100); //imageView的动画 NSMutableArray *images = [NSMutableArray array]; for (int i = 1; i < 8; i++) { [images addObject:[UIImage imageNamed:[NSString stringWithFormat:@"huoju_%d.tiff", i]]]; } //设置imageView的动画数组,数组内存放的必须是UIIMage类型的对象 imageView.animationImages = images; //设置动画时长(图片切换的时间间隔) imageView.animationDuration = 1; //设置动画重复次数(0代表无限循环) imageView.animationRepeatCount = 0; [self.view addSubview:imageView]; [imageView release]; //开启动画 // [imageView startAnimating]; // // //停止动画 // [imageView stopAnimating]; //UISwitch,开关控件,继承于UIControl //UISwitch,有固定的大小,宽51,高31 //设置Switch的状态 UISwitch *swichControl = [[UISwitch alloc] initWithFrame:CGRectMake(40, 40, 100, 100)]; swichControl.on = YES; [swichControl addTarget:self action:@selector(changeCondition:) forControlEvents:UIControlEventValueChanged]; [self.view addSubview:swichControl]; [swichControl release]; //NSTimer //创建方法1. // [NSTimer scheduledTimerWithTimeInterval:0.1 target:self selector:@selector(print:) userInfo:@"asfg" repeats:YES]; //创建方法2. // NSTimer *timer2 = [[NSTimer alloc] initWithFireDate:[NSDate dateWithTimeIntervalSinceNow:5] interval:1 target:self selector:@selector(print:) userInfo:nil repeats:YES]; // //每个线程(thread)中都有一个事件循环(NSRunLoop),来实时的判断是否该执行某些事件或方法 // //加入到事件循环中,通知init方式创建的timer不能够执行,需要加入到NSRunLoop中 // [[NSRunLoop currentRunLoop] addTimer:timer2 forMode:NSDefaultRunLoopMode]; // [timer2 release]; // // //立即执行第一次操作 // [timer2 fire]; // //停止计时器 // [timer2 invalidate]; //创建方法3. NSTimer *timer3 = [NSTimer timerWithTimeInterval:1 target:self selector:@selector(print:) userInfo:nil repeats:YES]; // [[NSRunLoop currentRunLoop] addTimer:timer3 forMode:NSDefaultRunLoopMode]; //添加到主线程的事件循环 [[NSRunLoop mainRunLoop] addTimer:timer3 forMode:NSDefaultRunLoopMode]; } - (void)print:(NSTimer *)timer { NSLog(@"逗逗"); } - (void)changeCondition:(UISwitch *)condition { // condition.on = YES; [imageView startAnimating]; } - (void)chang:(UISlider *)change { imageView.animationDuration = change.value; label.text = [NSString stringWithFormat:@"当前速度为%.2f秒每张", change.value]; [imageView startAnimating]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } - (void)begin:(UIButton *)begins { if (begins == beginButton) { [imageView startAnimating]; } else { [imageView stopAnimating]; } }
效果图如下所示：
好了今天就先到这里了，要回家了，望大家多多指点，不足之处尽管指出，今天好冷明天见各位，see you！
标签：des cWeb style blog http io ar color os
原文地址：http://www.cnblogs.com/dyx-wx/p/4156549.html
