qq_31863011

控件的一些使用

cell选中颜色
//无色
cell.selectionStyle = UITableViewCellSelectionStyleNone;
//蓝色
cell.selectionStyle = UITableViewCellSelectionStyleBlue;
//灰色
cell.selectionStyle = UITableViewCellSelectionStyleGray;

自定义颜色

UIColor *color = [UIColor colorWithRed:arc4random() % 256 / 255.0 green:arc4random() % 256 / 255.0 blue:arc4random() % 256 / 255.0 alpha:1];

Label自定义高度

//先设定label的行数为0

label.numberOfLines = 0;

//动态计算上述文字所需要的宽高

CGSize size = [label.text sizeWithFont:label.font constrainedToSize:CGSizeMake(200, 1000)];

label.frame = CGRectMake(0, 20, size.width, size.height);

Label倒角

label.layer.cornerRadius = 50;

alpha为 0（全透明） 1———0 透明度上升

图标变圆

UIImageView *img = nil;

img.layer.cornerRadius = 25.0f;

img.clipsToBounds = YES;

APP更改名字

在InfoPlist.strings 写上 CFBundleDisplayName="霸气的第一次";

APP更改图标

图片名字为

Icon.png 或者 [email protected]

制作两个按钮（只能单选）

//1.加载图片

//除png不需要后缀外,其余格式图片一律需要添加后缀

UIImage *unchecked = [UIImage imageNamed:@"unchecked"];

UIImage *checked = [UIImage imageNamed:@"checked"];

UIImage *normal = [UIImage imageNamed:@"3_normal"];

UIImage *selected = [UIImage imageNamed:@"3_selected"];

//2.创建按钮

btn = [UIButton buttonWithType:UIButtonTypeCustom];

heart = [UIButton buttonWithType:UIButtonTypeCustom];

//按下去没有高亮的效果

btn.adjustsImageWhenHighlighted = NO;

//3.设置按钮图片

[btn setImage:unchecked forState:UIControlStateNormal];

[btn setImage:checked forState:UIControlStateSelected];

[btn addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside];

btn.frame = CGRectMake(30, 30, unchecked.size.width, unchecked.size.height);

[self.window addSubview:btn];

heart.adjustsImageWhenHighlighted = NO;

[heart setImage:normal forState:UIControlStateNormal];

[heart setImage:selected forState:UIControlStateSelected];

[heart addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside];

heart.frame = CGRectMake(150, 30, normal.size.width, normal.size.height);

heart.backgroundColor = [UIColor redColor];

[self.window addSubview:heart];

self.window.backgroundColor = [UIColor whiteColor];

[self.window makeKeyAndVisible];

return YES;

}

- (void)btnClick:(UIButton *)sender

{

//实现单选

//1.将所有按钮的selected状态改为NO

btn.selected = NO;

heart.selected = NO;

sender.selected = !sender.isSelected;

}

山寨微信（各种触发事件）

_label = [[UILabel alloc] init];

_label.frame = CGRectMake(50, 50, 200, 200);

_label.backgroundColor = [UIColor cyanColor];

[self.window addSubview:_label];

UIControl *control = [[UIControl alloc] init];

control.frame = CGRectMake(10, 480 - 50, 300, 50);

control.backgroundColor = [UIColor greenColor];

//按一下

[control addTarget:self action:@selector(touchDown) forControlEvents:UIControlEventTouchDown];

//按住放开

[control addTarget:self action:@selector(touchUpInside) forControlEvents:UIControlEventTouchUpInside];

//按住拖到外面

[control addTarget:self action:@selector(touchDragExit) forControlEvents:UIControlEventTouchDragExit];

//按住拖到里面

[control addTarget:self action:@selector(touchDragEnter) forControlEvents:UIControlEventTouchDragEnter];

//按住在外面放开

[control addTarget:self action:@selector(touchUpOutSide) forControlEvents:UIControlEventTouchUpOutside];

[self.window addSubview:control];

self.window.backgroundColor = [UIColor whiteColor];

[self.window makeKeyAndVisible];

return YES;

}

- (void)touchUpOutSide

{

_label.text = @"已取消";

}

- (void)touchDragExit

{

_label.text = @"松开取消";

}

- (void)touchDragEnter

{

_label.text = @"松开发送";

}

- (void)touchUpInside

{

_label.text = @"发送成功";

}

- (void)touchDown

{

_label.text = @"松开发送";

}

imageView的适配

//拉伸图片,填满整个view,但是图片有可能会变形

//UIViewContentModeScaleToFill

//等比例拉伸内容,只要宽或者高触顶,停止拉伸

//UIViewContentModeScaleAspectFit

//等比例拉伸内容,直到全部填满,此时内容就有可能超过view的大小

//如果不需要超出部分,则可以使用clipsToBonuds进行裁剪

//UIViewContentModeScaleAspectFill

imageView.contentMode = UIViewContentModeScaleToFill;

imageView.backgroundColor = [UIColor redColor];

imageView.frame = CGRectMake(100, 100, 100, 100);

imageView.clipsToBounds = YES;

汤姆猫（动画）

UIImageView *imageView = [[UIImageView alloc] init];

imageView.frame = CGRectMake(0, 0, 320, 480);

//1.准备电影胶卷

NSMutableArray *films = [[NSMutableArray alloc] init];

for (NSInteger i = 0; i <= 80; ++i)

{

//cat_drink0000.jpg

NSString *name = [NSString stringWithFormat:@"cat_drink%04d.jpg", i];

UIImage *image = [UIImage imageNamed:name];

[films addObject:image];

}

imageView.image = films[0];

//2.将胶卷装到imageView中

imageView.animationImages = films;

//3.设置播放总时间

imageView.animationDuration = 5.f;

//4.设置重复次数,0为无限循环

imageView.animationRepeatCount = 0;

//5.开始播放

[imageView startAnimating];

//6.结束播放

//[imageView stopAnimating];

//7.判断当前播放状态

//[imageView isAnimating];

UITapGestureRecognizer（手势三部曲）

//1、创建手势

UITapGestureRecognizer *r1 = [[UITapGestureRecognizer alloc] init];

//2、手势触发事件

[r1 addTarget:self action:<#(SEL)#>];

//3、把手势应用在哪

[self.window addGestureRecognizer:r1];

启动动画

[UIView animateWithDuration:<#(NSTimeInterval)#> animations:<#^(void)animations#> completion:<#^(BOOL finished)completion#>]

tranform 的运用

CGAffineTransform old = imagev.transform;

//旋转

imagev.transform = CGAffineTransformRotate(old, M_PI_2);

/ /平移

imagev.transform = CGAffineTransformTranslate(old, 100, 0);

//缩放

imagev.transform = CGAffineTransformScale(old, 1.5, 1.5);

结构体转化成字符串

CGRect bounds:(0, 0, weight, height);

CGPoint center;(x, y);

NSLog(@"bounds = %@", NSStringFromCGRect(bounds));

NSLog(@"center = %@", NSStringFromCGPoint(center));

uiviewcontrol

1.uiviewcontrol的切换

//1.实例化要切换的控制器对象

QFViewController2 *green = [[QFViewController2 alloc] init];

//2.设置切换动画

green.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;

//3.利用ViewController中的方法进行切换

//模态视图

[self presentViewController:green animated:YES completion:nil];

//1 回到之前的页面

[self dismissViewControllerAnimated:YES completion:nil];

2.uiviewcontrol的正向传值:viewcontrol1 —> viewcontrol2

viewcontrol1:

- (void)nextVc

{

//1.实例化要切换的控制器对象

QFViewController2 *green = [[QFViewController2 alloc] init];

//设置要传递给green控制器的内容

//可以通过setter传递,也可以通过单独写一个方法进行传递

green.username = @"1000phone";

green.password = @"123456";

//设置切换动画

green.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;

//2.利用ViewController中的方法进行切换

//模态视图

[self presentViewController:green animated:YES completion:nil];

modalTransitionStyle

UIModalTransitionStyleCoverVertical 从下向上√

UIModalTransitionStyleCrossDissolve 渐变

UIModalTransitionStyleFlipHorizontal 横向翻转

UIModalTransitionStylePartialCurl 翻书

}

viewcontrol2:

@interface QFViewController2 : UIViewController

@property (nonatomic, strong) NSString *username;

@property (nonatomic, strong) NSString *password;

@end

定义全局变量，用来保存从uiviewcontrol1传来的数据!

3.利用中间对象传值(把值保存到delegate)

//如果是容器，要在所有的viewcontroller之前进行实例化

在这里WLDAppDelegate.m弄

self.arr = [[NSMutableArray alloc] init];

viewcontrol1:

//当前应用程序的对象

UIApplication *app = [UIApplication sharedApplication];

//获取当前app的代理对象

WLDAppDelegate *delegate = app.delegate;

delegate.passWord = @"hsdkjfhkasf";

- (void)next

{

WLDViewController2 *c2 = [[WLDViewController2 alloc] init];

c2.modalTransitionStyle = UIModalTransitionStyleCoverVertical;

[self presentViewController:c2 animated:YES completion:nil];

}

viewcontrol2:

UIApplication *app = [UIApplication sharedApplication];

WLDAppDelegate *delegate = app.delegate;

NSLog(@"%@", delegate.passWord);

- (void)per

{

[self dismissViewControllerAnimated:YES completion:nil];

}

4.反向传值时需要运用到代理(viewcontrol2 -> viewcontrol1)

//QFViewController2 委托 QFViewController1 接收处理好的数据

// 被代理代理

//定义代理协议

//让代理对象遵循协议

//在被代理对象中声明一个代理对象成员

textfield

//设置textfield

UITextField *f1 = [[UITextField alloc] init];

f1.frame = CGRectMake(10, 50, 300, 40);

//设置边框 ()

f1.borderStyle = UITextBorderStyleRoundedRect;

//设置键盘类型

//textField.keyboardType = UIKeyboardTypeNumberPad;

//设置提示信息

f1.placeholder = @"请输入密码";

//设置密文输入

f1.secureTextEntry = YES;

//设置一键清除按钮

f1.clearButtonMode = UITextFieldViewModeWhileEditing;

//设置字体高度

f1.adjustsFontSizeToFitWidth = YES;

//设置return 按钮类型

f1.returnKeyType = UIReturnKeyEmergencyCall;

[self.view addSubview:f1];

//禁止用键盘

textField.enabled = NO;

隐藏键盘textfield

(点击返回return键或者点击空白处)

1.首先遵守协议:（textfielddelegate）

2.设置代理: self.delegate = self

//通过设置代理来点击return键隐藏键盘

f1.delegate = self;

//点击空白出就隐藏键盘

UITapGestureRecognizer *t1 = [[UITapGestureRecognizer alloc] init];

[t1 addTarget:self action:@selector(hide)];

[self.view addGestureRecognizer:t1];

}

- (void)hide

{

[self.view endEditing:YES];

}

- (BOOL)textFieldShouldReturn:(UITextField *)textField

{

[textField resignFirstResponder];

return YES;

}

键盘遮挡

//通过通知中心获取键盘的升起和隐藏状态

NSNotificationCenter *center = [NSNotificationCenter defaultCenter];

//1.谁去处理

//2.如何处理

//3.监听键盘的升起和落下

[center addObserver:self selector:@selector(keyBoardWillShow:) name:UIKeyboardWillShowNotification object:nil];

[center addObserver:self selector:@selector(keyBoardWillHide:) name:UIKeyboardWillHideNotification object:nil];

//得有协议

textField.delegate = self;

／／1 通过协议，获得正在编辑的文本框

- (void)textFieldDidBeginEditing:(UITextField *)textField

{

/*获取当前正在编辑的文本框*/

_texf = textField;

}

／／2 键盘升起时，view的抬起

- (void)keyBoardWillShow:(NSNotification *)sender

{

NSLog(@"%@", sender);

//包含了键盘的所有信息

NSDictionary *userInfo = sender.userInfo;

//结束时键盘的fram状态

NSValue *frameValue = userInfo[@"UIKeyboardFrameEndUserInfoKey"];

NSNumber *timeValue = userInfo[@"UIKeyboardAnimationDurationUserInfoKey"];

//将NSValue --> CGRect

//1.准备一个空的CGRect

CGRect keyBoardFrame;

//2.从NSValue中去获取

[frameValue getValue:&keyBoardFrame];

NSLog(@"%@+++", NSStringFromCGRect(keyBoardFrame));

/*判断是否被键盘遮蔽*/

if (CGRectGetMaxY(_texf.frame) > CGRectGetMinY(keyBoardFrame))

{

CGRect oldFrame = self.view.frame;

/***重新计算要上移的偏移量***/

CGFloat newY = 480 - CGRectGetHeight(keyBoardFrame) - CGRectGetMaxY(_texf.frame);

CGRect newFrame = CGRectMake(0, newY, CGRectGetWidth(oldFrame), CGRectGetHeight(oldFrame));

[UIView animateWithDuration:[timeValue floatValue] animations:^{

self.view.frame = newFrame;

}];

}

／／3 键盘消失时，view的落下

- (void)keyBoardWillHide:(NSNotification *)sender

{

[UIView animateWithDuration:0.25 animations:^{

self.view.frame = CGRectMake(0, 0, 320, 480);

}];

}

UINavigationController

1 初始化导航控制器

ViewController1 *root = [[ViewController1 alloc] init];

//初始化导航控制器，把导航控制器加载到v1中

UINavigationController *navi = [[UINavigationController alloc] initWithRootViewController:root];

self.window.rootViewController = navi;

2 定制自己viewcontrol的导航控制器

1 定制导航控制器标题

self.navigationItem.title = @"dsfs";

2 定制导航控制器的左右按钮

［1］利用系统自带的按钮

UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:nil action:nil];

self.navigationItem.leftBarButtonItem = item;

系统自带的按钮：

［2］把按钮改成文字

UIBarButtonItem *rightItem = [[UIBarButtonItem alloc] initWithTitle:@"添加" style:UIBarButtonItemStylePlain target:nil action:nil];

UIImage *image = [UIImage imageNamed:@"refresh_30"];

［3］把按钮改成自带的图片

UIBarButtonItem *rightItemImage = [[UIBarButtonItem alloc] initWithImage:i[UIImage imageNamed:@"refresh_30"] style:UIBarButtonItemStylePlain target:nil action:nil];

self.navigationItem.rightBarButtonItem = rightItemImage;

3 定制导航控制器的titleView,把按钮添加到titleView上

btn 为一个按钮

self.navigationItem.titleView = btn;

4 定制下一个viewControl的返回按钮，我们应该在前一个viewControl就写代码:

如果我们没写默认为back按钮

self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"aaa" style:UIBarButtonItemStylePlain target:nil action:nil];

5 如果leftBarButtonItem存在,则会自动隐藏backBarButtonItem

//设置以下属性为YES则可以让两者共存

self.navigationItem.leftItemsSupplementBackButton = YES;

6 如果我们想隐藏back按钮（应该很少用这个）

self.navigationItem.hidesBackButton = YES;

===============================================

导航控制器

WLDViewController1 *red = [[WLDViewController1 alloc] init];

//实例化导航控制器

UINavigationController *navi = [[UINavigationController alloc] initWithRootViewController:red];

self.window.rootViewController = navi;

2. //导航条设置透明,ios7默认透明,7以前为不透明

默认：

更改导航条的透明属性（变为不透明）navi.navigationBar.translucent = NO;

更改导航条的背景图片（设置导航条背景图片,导航则会变为不透明）

如果导航条为不透明的，添加背景图片，

navi.navigationBar.translucent = NO;

//更改导航条的背景图片问！

UIImage *image = [UIImage imageNamed:@"bar"];

[navi.navigationBar setBackgroundImage:image forBarMetrics:UIBarMetricsDefault];

效果：(导航条颜色更深)

如果导航条为透明的，添加背景图片，

navi.navigationBar.translucent = YES;

//更改导航条的背景图片问！

UIImage *image = [UIImage imageNamed:@"bar"];

[navi.navigationBar setBackgroundImage:image forBarMetrics:UIBarMetricsDefault];

效果：

在QFRedViewController上加控件

//如果导航条透明,起始坐标为(0,64)

//如果导航条不透明,起始坐标为(0,0)

我们IOS6以上就是透明的了！

以IOS7为例子

UIView *v = [[UIView alloc] init];

v.frame = CGRectMake(0, 0, 100, 100);

v.backgroundColor = [UIColor blackColor];

[self.view addSubview:v];

效果：

定制导航栏内容：（重点）都在自己的control上搞

1.添加导航栏的中间内容

在control的init方法里面添加内容

//定制导航条内容

self.title = @"superman";

2.//添加导航上的左按钮

UIBarButtonItem *leftItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(leftPress)];

//导航控制器会加载每个viewcontroller中的navigationitem,并且将该对象的内容添加到导航条之上

self.navigationItem.leftBarButtonItem = leftItem;

2 自定义添加导航上的按钮（右边）—文字

UIBarButtonItem *rightItem = [[UIBarButtonItem alloc] initWithTitle:@"添加" style:UIBarButtonItemStylePlain target:nil action:nil];

self.navigationItem.rightBarButtonItem = rightItem;

2 自定义添加导航栏上的按钮（右边）— 图片

UIImage *image = [UIImage imageNamed:@"refresh_30"];

UIBarButtonItem *rightItemImage = [[UIBarButtonItem alloc] initWithImage:image style:UIBarButtonItemStylePlain target:nil action:nil];

self.navigationItem.rightBarButtonItem = rightItemImage;

3.按导航上按钮进入下一个control

首先利用按钮的方法

self.navigationItem.leftBarButtonItem = leftItem;

UIBarButtonItem *rightItem = [[UIBarButtonItem alloc] initWithTitle:@"添加" style:UIBarButtonItemStylePlain target:self action:@selector(next)];

self.navigationItem.rightBarButtonItem = rightItem;

方法是：

- (void)next

{

QFBlueViewController *blue = [[QFBlueViewController alloc] init];

//获取到当前所在的导航控制器

[self.navigationController pushViewController:blue animated:YES];

}

切换到这个control：

在导航上添加按钮返回到上一个control

if (self) {

// Custom initialization

UIBarButtonItem *rightItem = [[UIBarButtonItem alloc] initWithTitle:@"回去" style:UIBarButtonItemStylePlain target:self action:@selector(back)];

self.navigationItem.rightBarButtonItem = rightItem;

}

return self;

}

- (void)back

{

[self.navigationController popToRootViewControllerAnimated:YES];

}

切换到上一个

3. 把返回键按钮改了

//在当前页面设置返回按钮,会在下一个页面出现

self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"xxxx" style:UIBarButtonItemStylePlain target:nil action:nil];

改成xxxx

//如果leftBarButtonItem（如果左边按钮存在）存在,则会自动隐藏backBarButtonItem(就是上面那个xxxx)

UIBarButtonItem *back = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"refresh_30"] style:UIBarButtonItemStylePlain target:self action:@selector(back)];

self.navigationItem.leftBarButtonItem = back;

方法为：

- (void)back

{

[self.navigationController popToRootViewControllerAnimated:YES];

}

但如果加上 //隐藏back按钮

self.navigationItem.hidesBackButton = YES;

则两个按钮共存

===============================================

添加左边（右边按钮），按钮要自定义图片则需要以下方法

1）首先要设置按钮，图片放在按钮上

UIButton *btn1 = [UIButton buttonWithType:UIButtonTypeCustom];

btn1.frame = CGRectMake(0, 100, 44, 44);

[btn1 setImage:[UIImage imageNamed:@"2.jpg"] forState:UIControlStateNormal];

2)然后添加按钮到导航控制器中

self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:btn1];

导航控制器

1 设置导航控制器的背景图片

导航控制器如果为透明的话,起始坐标为(0, 64);

导航控制器如果为不透明的话，起始坐标为(0, 0);

//设置导航条背景图片,导航则会变为不透明.

[navi.navigationBar setBackgroundImage:image forBarMetrics:UIBarMetricsDefault];

2 设置导航控制器的背景颜色

//这时我们需要判断我们的系统版本号是不是大于7

首先先在导航控制器1-Prefix.pch文件内，写define

#define iOS7 ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0)

if (iOS7)

{

navi.navigationBar.barTintColor = [UIColor greenColor];

}

else

{

navi.navigationBar.tintColor = [UIColor greenColor];

3 切换到下个viewControl时隐藏导航控制器

我们想程序出来时，3秒隐藏导航控制器

-(void)viewDidAppear:(BOOL)animated

{

[super viewDidAppear:animated];

[self performSelector:@selector(test) withObject:nil afterDelay:1.0f];

}

- (void)test

{

[super viewDidAppear:YES];

[self.navigationController setNavigationBarHidden:YES animated:YES];

}

4 改变状态拦样式(变白亮点)

- (UIStatusBarStyle)preferredStatusBarStyle

{

return UIStatusBarStyleLightContent;

}

5 隐藏状态栏

//隐藏状态栏

- (BOOL)prefersStatusBarHidden

{

return YES;

}

6 如果自定义添加一个back按钮，则系统会替我们添加一个back按钮，默认名字为back，如果我们有title，则名字会和title一致

7 在导航控制器添加按钮，跳转到其中某个viewControl界面

例：跳转到第三个viewControl界面

- (void)go3

{

UIViewController *v;

NSArray *s = self.navigationController.viewControllers;

for (UIViewController *vc in s)

{

if ([vc.title isEqualToString:@"绿色"])

{

v = vc;

break;

}

[self.navigationController popToViewController:v animated:YES];

}

回到根视图控制器

- (void)root

{

//直接回到根视图控制器

[self.navigationController popToRootViewControllerAnimated:YES];

}

往导航控制器的titleView里面加东西

self.navigationBar.titleView = UIButton;

这样才能显示出来!

8 uitoolbar (工具条上都是按钮)

(1)先开启toolbarHidden

navi.toolbarHidden = NO;

(2)更改toolbar的背景颜色

navi.toolbar.barTintColor = [UIColor redColor];

(2)设置toolbar上的按钮

UIBarButtonItem *forward = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFastForward target:nil action:nil];

UIBarButtonItem *play = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemPlaytarget:nil action:nil];

UIBarButtonItem *pause = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemPause target:nil action:nil];

UIBarButtonItem *space = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];

//设置toolbar上的按钮

self.toolbarItems = @[forward, space, play, space, pause];

9 UISegmentControl:分段控制器

tupian 可以是字符串或者图片

NSArray *ary = @[@"1", @"2", @"3", @"4", @"5"];

UISegmentedControl *seg = [[UISegmentedControl alloc] initWithItems:ary];

seg.frame = CGRectMake(30, 50, 200, 30);

//设置默认选项（第五个）

seg.selectedSegmentIndex = 4;

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

[self.view addSubview:seg];

}

- (void)change:(UISegmentedControl *)sender

{

int i = sender.selectedSegmentIndex;

switch (i) {

case 0:

NSLog(@"按价格排列");

break;

case 1:

NSLog(@"按销量排列");

default:

break;

}

10 UISlider 滑块

tupian

UISlider *slider = [[UISlider alloc] init];

[slider setThumbImage:[UIImage imageNamed:@"kiss_40"] forState:UIControlStateNormal];

//slider.enabled = NO;

slider.maximumValue = 100.0;//设置最大值

slider.minimumValue = 0.0;//设置最小值

slider.value = 50; //设置默认值

slider.maximumTrackTintColor = [UIColor redColor];

slider.minimumTrackTintColor = [UIColor blackColor];

// CGAffineTransform traform = CGAffineTransformRotate(slider.transform, M_PI_2);

// slider.transform = traform;

[slider addTarget:self action:@selector(valueChange:) forControlEvents:UIControlEventValueChanged];

slider.backgroundColor = [UIColor redColor];

slider.frame = CGRectMake(10, 30, 300, 50);

[self.view addSubview:slider];

}

- (void)valueChange:(UISlider *)sender

{

CGFloat value = sender.value;

NSLog(@"value = %f", value);

}

11 UISwith 开关

tupian

UISwitch *swi = [[UISwitch alloc] init];

／／改变颜色

swi.onTintColor = [UIColor redColor];

[swi addTarget:self action:@selector(swichChange:) forControlEvents:UIControlEventValueChanged];

//默认为打开状态

[swi setOn:YES animated:YES];

swi.frame = CGRectMake(10, 30, 100, 50);

[self.view addSubview:swi];

}

- (void)swichChange:(UISwitch *)sender

{

if (sender.isOn)

{

NSLog(@"开");

}

else

{

NSLog(@"关");

}

12 UIActivityIndicatorView 菊花

tupian

UIActivityIndicatorView *flower1 = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];

//启动动画

[flower1 startAnimating];

//停止动画,并且隐藏

//[flower1 stopAnimating];

//停止后是否隐藏,默认为YES

flower1.hidesWhenStopped = NO;

//设置颜色

flower1.color = [UIColor redColor];

//设置状态栏的网络状态 tupian

[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];

flower1.frame = CGRectMake(10, 30, 100, 100);

[self.view addSubview:flower1];

13 UIProgressView 进度条

tupian

UIProgressView *progressView = [[UIProgressView alloc] init];

progressView.tag = 1;

progressView.progress = 0.0;

progressView.trackTintColor = [UIColor redColor];

progressView.progressTintColor = [UIColor greenColor];

progressView.frame = CGRectMake(10, 30, 300, 50);

[self.view addSubview:progressView];

//定时器

//1.每隔多长时间

//2.谁

//3.做什么

//4.要给第3步传递的参数

//5.是否重复

NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(changeProgress) userInfo:pro(传得时一个参数) repeats:YES];

//停止定时器,停止后必须要重新创建定时器

//[timer invalidate];

}

- (void)changeProgress

{

UIProgressView *p = (UIProgressView *)[self.view viewWithTag:1];

CGFloat newProgress = p.progress + 0.1;

[p setProgress:newProgress animated:YES];

}

14 UIStepper 计步器

tupian

UIStepper *stepper = [[UIStepper alloc] init];

//设置步长

stepper.stepValue = 3;

//设置循环

stepper.wraps = YES;

stepper.maximumValue = 10;

stepper.minimumValue = 0;

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

stepper.frame = CGRectMake(10, 30, 300, 30);

[self.view addSubview:stepper];

}

- (void)stepChange:(UIStepper *)sender

{

CGFloat value = sender.value;

NSLog(@"%f", value);

}

15 UITextView

//没有边框

UITextView *textView = [[UITextView alloc] init];

textView.frame = CGRectMake(10, 30, 200, 100);

textView.delegate = self;

//设置边框大小

textView.layer.borderWidth = 1;

textView.font = [UIFont systemFontOfSize:30];

textView.textColor = [UIColor redColor];

//设置内容

textView.text = @"hello";

必须要加这个东西，这个是在IOS7以后才出现的！

//出现光标偏移

self.automaticallyAdjustsScrollViewInsets = NO;

//隐藏键盘

//1.在旁边添加一个按钮

UIButton *btn = [UIButton buttonWithType:UIButtonTypeSystem];

[btn setTitle:@"发送" forState:UIControlStateNormal];

btn.frame = CGRectMake(210, 30, 50, 50);

[btn addTarget:self action:@selector(hideKeyBoard) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:btn];

//2.点击空白区域

UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] init];

[tap addTarget:self action:@selector(hideKeyBoard)];

[self.view addGestureRecognizer:tap];

// [textView resignFirstResponder];

[self.view addSubview:textView];

}

//按空白或者发送键隐藏键盘

- (void)hideKeyBoard

{

[self.view endEditing:YES];

}

//可以打印用户正在输入的内容需要代理协议 <uitextviewdelegate>

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text

{

NSLog(@"%@", text);

return YES;

}

15 UITouch

《—-

1 、设置图片阴影

//设置阴影

_imageView.layer.shadowOffset = CGSizeMake(-5, 5);

_imageView.layer.shadowColor = [[UIColor lightGrayColor] CGColor];

_imageView.layer.shadowOpacity = 0.5;

2、两个动作就可以造成这个效果

//在屏幕上滑动

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event

{

//获取其中一个

UITouch *t = [touches anyObject];

//获取坐标点

CGPoint currPoint;

CGPoint prevPoint;

//当前坐标

currPoint = [t locationInView:self.view];

CGRect frame = _imageView.frame;

//当我手指还点击图片（没有离开的时候）向右滑动的时候，最多滑到160处

if (currPoint.x >= 160)

{

frame.origin.x = 160;

}

else

{

frame.origin.x = currPoint.x;

}

_imageView.frame = frame;

NSLog(@"开始:%@, %@", NSStringFromCGPoint(currPoint), NSStringFromCGPoint(prevPoint));

}

//手指离开屏幕

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event

{

UITouch *t = [touches anyObject];

//获取坐标点

CGPoint currPoint;

//当前坐标

currPoint = [t locationInView:self.view];

CGRect frame = _imageView.frame;

//当我手指离开图片的时候，图片自动滑到100处

if (currPoint.x >= 100)

{

frame.origin.x = 100;

NSLog(@"%f", frame.origin.x);

}

[UIView animateWithDuration:0.3 animations:^{

_imageView.frame = frame;

}];

}

===============

//触摸屏幕时候触发

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

{

//获取到用户点击的位置

//NSArray *allTouch = [touches allObjects]; //返回所有元素,返回所有点击的坐标

//获取其中一个

UITouch *t = [touches anyObject];

//获取坐标点

CGPoint currPoint;

CGPoint prevPoint;

//当前坐标

currPoint = [t locationInView:self.view];

//上一个坐标

prevPoint = [t previousLocationInView:self.view];

NSLog(@"开始:%@, %@", NSStringFromCGPoint(currPoint), NSStringFromCGPoint(prevPoint));

}

16 UITabbarController

1 设置tabbar按钮

1) 系统自带

UITabBarItem *item = [[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemSearch tag:0];

self.tabBarItem = item;

2) 带一张图片和文字

// 文字+图片

UITabBarItem *item = [[UITabBarItem alloc] initWithTitle:@"分栏红色" image:[UIImage imageNamed:@"man_30"] tag:0];

3) 带两张图片和文字

//ios7以后才可以使用

// 文字+图片+选中图片

UITabBarItem *item = [[UITabBarItem alloc] initWithTitle:@"红色标题" image:[UIImage imageNamed:@"man_30"] selectedImage:[UIImage imageNamed:@"messenger_30"]];

self.tabBarItem = item;

2 设置徽标（泡泡）

item.badgeValue = @"123";

3 设置应用程序的提示数字

//设置应用程序图标上的提示数字

[[UIApplication sharedApplication] setApplicationIconBadgeNumber:10];——》这句话放在哪个VIEWCONTROL都可以

4 代理协议<UITabBarControllerDelegate>

//指定viewcontroller是否可选

- (BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController

{

if ([viewController.title isEqualToString:@"蓝色"])

{

return NO; //使蓝色这个无法选中

}

return YES;

}

//已经选中

- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController

{

if ([viewController.title isEqualToString:@"绿色"])

{

//使绿色这个的背景颜色改变

viewController.view.backgroundColor = [UIColor blackColor];

}

5 保存最后一次点击的位置

再次打开时

//已经选中这是代理协议中的方法

- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController

{

NSInteger index = tabBarController.selectedIndex; //获取当前被选中的viewcontroller下标

//保存用户最后一次点击的位置

NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];

[userDefaults setInteger:index forKey:@"lastSelected"];

//同步

[userDefaults synchronize];

}

//将之前保存的位置取出

NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];

NSInteger lastSelected = [userDefaults integerForKey:@"lastSelected"];

//赋值给selectedIndex

tb.selectedIndex = lastSelected;

6 编辑完保存拖动的顺序

//用户结束编辑这是代理的协议

- (void)tabBarController:(UITabBarController *)tabBarController didEndCustomizingViewControllers:(NSArray *)viewControllers changed:(BOOL)changed

{

if (changed) //如果用户有对vc位置进行过改变

{

NSMutableArray *titleArray = [[NSMutableArray alloc] init];

for (UIViewController *vc in viewControllers)

{

//取出每个viewcontroller的title保存

[titleArray addObject:vc.title];

}

//将上述数组直接存到userDefaults中

NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];

[userDefaults setObject:titleArray forKey:@"userOrder"];

[userDefaults synchronize];

}

NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];

NSArray *order = [userDefaults arrayForKey:@"userOrder"];

//原始顺序

NSArray *viewControllers = @[red, green, blue, yellow, purple, orange];

//重新组合要显示的顺序

if (order != nil)

{

NSMutableArray *newViewControllers = [[NSMutableArray alloc] init];

for (NSString *title in order) //遍历名单

{

for (UIViewController *vc in viewControllers) //遍历学生

{

if ([title isEqualToString:vc.title])

{

[newViewControllers addObject:vc];

}

//3.将要显示的控制器交由tb来管理

tb.viewControllers = newViewControllers;

}

else //第一次安装app 的时候,显示原始顺序

{

tb.viewControllers = viewControllers;

}

//设置代理,用来监听tabbar选择的变化

tb.delegate = self;

7 定制UITabBarControl(自定义)

自定义一个tabbar，继承uiview

@interface WLDTabbarView : UIView

#import "WLDTabbarView.h"

#import "WLDAppDelegate.h"

@implementation WLDTabbarView

- (id)initWithFrame:(CGRect)frame

{

self = [super initWithFrame:frame];

if (self) {

// Initialization code

UIImageView *imagev = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 320, 60)];

imagev.image = [UIImage imageNamed:@"tabbar_bg@2x"];

imagev.userInteractionEnabled = YES;

[self addSubview:imagev];

for (int i = 0; i < 4; i ++)

{

UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];

[btn setImage:[UIImage imageNamed:[NSString stringWithFormat:@"%d", i * 2 + 1]] forState:UIControlStateNormal];

[btn setImage:[UIImage imageNamed:[NSString stringWithFormat:@"%d", i * 2 + 2]] forState:UIControlStateSelected];

btn.frame = CGRectMake(80 * i, 0, 80, 60);

[imagev addSubview:btn];

[btn addTarget:self action:@selector(click:) forControlEvents:UIControlEventTouchUpInside];

btn.tag = 100 + i;

btn.adjustsImageWhenHighlighted = NO;

}

return self;

}

- (void)click:(UIButton *)sender

{

for (int i = 0; i < 4; i ++)

{

UIButton *btn = (UIButton *)[self viewWithTag:100 + i];

btn.selected = NO;

}

sender.selected = !sender.isSelected;

//获取到当前app的代理对象

UIApplication *app = [UIApplication sharedApplication];

WLDAppDelegate *delegate = app.delegate;

通过点击按钮，可以切换我们的viewControl

delegate.tabber.selectedIndex = sender.tag - 100;

NSLog(@"%d", sender.tag - 100);

}

然后

@interface WLDAppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow *window;

@property (nonatomic, strong) UITabBarController *tabber;

@end

在@implementation WLDAppDelegate中

_tabber = [[UITabBarController alloc] init];

_tabber.viewControllers = @[navi1, navi2, navi3, navi4];

self.window.rootViewController = _tabber;

[self creatTabbar];

return YES;

}

- (void)creatTabbar

{

//隐藏tabbar

_tabber.tabBar.hidden = YES;

WLDTabbarView *tabbarView = [[WLDTabbarView alloc] initWithFrame:CGRectMake(0, 480 - 60, 320, 60)];

[self.window addSubview:tabbarView];

}

=========================================

4）开始时隐藏自定义tabbar

[self hide];

- (void)hideTabBar

{

CGRect frame = _customerTabBar.frame;

frame.origin.y = 480;

[UIView animateWithDuration:0.3 animations:^{

_customerTabBar.frame = frame;

//设置透明度

_customerTabBar.alpha = 0;

}];

}

5）过3秒显示tabbar

需要用到一个自带的方法

[self performSelector:@selector(showTabBar) withObject:nil afterDelay:3];

- (void)showTabBar

{

CGRect frame = _customerTabBar.frame;

frame.origin.y = 480 - CGRectGetHeight(frame);

[UIView animateWithDuration:0.3 animations:^{

_customerTabBar.frame = frame;

_customerTabBar.alpha = 1;

}];

}

6）如果你是IOS6，你要定制自己的tabbar，就会遇到这个问题解决ios6中，viewControl中view不能全屏的问题

//把这段话弄上去就可以了

[self ios6];

- (void)ios6

{

NSArray *subs = _tb.view.subviews;

for (UIView *v in subs)

{

//将类名转换为字符串

if ([NSStringFromClass([v class]) isEqualToString:@"UITransitionView"])

{

v.frame = CGRectMake(0, 0, 320, 480);

}

NSLog(@"subs = %@", subs);

}

17 UIScrollView 基本操作

UIScrollView *sc = [[UIScrollView alloc] init];

sc.frame = CGRectMake(10, 30, 300, 200);

//设置scrollview的可视范围

sc.contentSize = CGSizeMake(600, 400);

//弹簧效果

sc.bounces = YES;

//设置翻页

sc.pagingEnabled = YES;

//隐藏滚动条

//垂直滚动条

sc.showsVerticalScrollIndicator = NO;

//水平滚动条

sc.showsHorizontalScrollIndicator = NO;

//将想要滚动的内容放到scrollView中

UIView *v1 = [[UIView alloc] init];

v1.frame = CGRectMake(0, 0, 300, 200);

v1.backgroundColor = [UIColor yellowColor];

UIView *v2 = [[UIView alloc] init];

v2.frame = CGRectMake(300, 0, 300, 200);

v2.backgroundColor = [UIColor blueColor];

UIView *v3 = [[UIView alloc] init];

v3.frame = CGRectMake(0, 200, 300, 200);

v3.backgroundColor = [UIColor greenColor];

UIView *v4 = [[UIView alloc] init];

v4.frame = CGRectMake(300, 200, 300, 200);

v4.backgroundColor = [UIColor blackColor];

[sc addSubview:v1];

[sc addSubview:v2];

[sc addSubview:v3];

[sc addSubview:v4];

[self.view addSubview:sc];

//设置移动偏移

sc.contentOffset = CGPointMake(20, 0);

//带动画的移动偏移

// [sc setContentOffset:CGPointMake(arc4random() % 301, arc4random() % 201) animated:YES];

定制广告条 scrollView

1）创建scrollView

UIScrollView *sc = [[UIScrollView alloc] init];

sc.frame = CGRectMake(0, 20, 320, 150);

//可视范围

sc.contentSize = CGSizeMake(320 * 6, 150);

//翻页效果

sc.pagingEnabled = YES;

[self.view addSubview:sc];

//设置scrollview的起始位置

sc.contentOffset = CGPointMake(320, 0);

//取消水平滚动条

sc.showsHorizontalScrollIndicator = NO;

2）创建6个UIImageView,并添加到scrollView上

for (NSInteger i = 0; i < 4; ++i)

{

NSString *name = [NSString stringWithFormat:@"%d.jpg", i + 1];

UIImage *image = [UIImage imageNamed:name];

UIImageView *v = [[UIImageView alloc] init];

v.image = image;

v.frame = CGRectMake(i * 320 + 320, 0, 320, 150);

[sc addSubview:v];

}

//实现循环滚动,在最后和最前面各添加一个冗余的view

UIImageView *last = [[UIImageView alloc] init];

UIImageView *first = [[UIImageView alloc] init];

first.frame = CGRectMake(0, 0, 320, 150);

last.frame = CGRectMake(320 * 5, 0, 320, 150);

first.image = [UIImage imageNamed:@"4.jpg"];

last.image = [UIImage imageNamed:@"1.jpg"];

[sc addSubview:first];

[sc addSubview:last];

3）创建一个最纯的view，并添加到view中

UIView *view = [[UIView alloc] init];

view.backgroundColor = [UIColor lightGrayColor];

view.alpha = 0.5;

view.frame = CGRectMake(0, 150, 320, 20);

[self.view addSubview:view];

4）创建一个pageControl，添加到最纯的view中

//用来显示页数

pageControl = [[UIPageControl alloc] init];

pageControl.frame = CGRectMake(225, -9, 95, 37);

//剩余页数颜色

pageControl.pageIndicatorTintColor = [UIColor blackColor];

//当前页数颜色

pageControl.currentPageIndicatorTintColor = [UIColor redColor];

//设置总页数

pageControl.numberOfPages = 4;

[view addSubview:pageControl];

5）要设代理

sc.delegate = self;

6）这是代理的方法

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView

{

CGPoint point = scrollView.contentOffset;//当前scrollView的位置

//需要根据当前的位置来设置pageControl的页数

pag.currentPage = (point.x - 320) / 320;

if (point.x == 320 * 5)//当移动到第6张的时候

{

pag.currentPage = 0;把页数置为0

scrollView.contentOffset = CGPointMake(320, 0);把scorllview的位置改变

}

else

if (point.x == 0)

{

pag.currentPage = 4;

scrollView.contentOffset = CGPointMake(320 * 4, 0);

}

7)使广告条自己跳转

1))设置定时器，让其在规定的时间内触发时间

//启动定时器

[NSTimer scheduledTimerWithTimeInterval:3 target:self selector:@selector(changeAD) userInfo:nil repeats:YES];

2)) 触发方法

- (void)changAD

{

CGPoint point = scr.contentOffset;

point.x += 320;

pag.currentPage = (point.x - 320) / 320;

if (point.x == 320 * 5)

{

point.x = 320;

pag.currentPage = 0;

scr.contentOffset = point;

return;

}

//设置scorllView的位置

[scr setContentOffset:point animated:YES];

}

scrollView 中图片的放大缩小

UIImageView *imgView = nil;

- (void)viewDidLoad

{

[super viewDidLoad];

// Do any additional setup after loading the view.

UIScrollView *scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];

imgView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0,320, 480)];

imgView.image = [UIImage imageNamed:@"1.jpg"];

[scroll addSubview:imgView];

scroll.minimumZoomScale = 0.5f;

scroll.maximumZoomScale = 2.0f;

scroll.delegate = self;

[self.view addSubview:scroll];

}

代理方法

- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView

{

return imgView;

}

18 用scrollView做进场动画->如果第一次进入，进入动画界面，不是，则进入主界面

首先在appdelegate里面

／／从沙盒中取数据

NSNumber *num = [[NSUserDefaults standardUserDefaults] objectForKey:@"first"];

_isFirst = [num boolValue];

if(!_isFirst)

{

self.animationVC = [[CYAnimationViewController alloc] init];

self.window.rootViewController = self.animationVC;

}

else

{

self.window.rootViewController = self.rootVC;

}

然后写两个viewControl,一个是动画界面，一个是主界面

／／动画界面

//创建scrollerview，如果滑动到最后一张，再拖拽下，就进入主界面

- (void)viewDidLoad

{

[super viewDidLoad];

// Do any additional setup after loading the view.

UIScrollView *scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];

for (NSInteger i = 0; i < 4; i++) {

UIImageView *imgView = [[UIImageView alloc] initWithFrame:CGRectMake(i*320,0, 320, 480)];

imgView.image = [UIImage imageNamed:[NSString stringWithFormat:@"%d.jpg",i+1]];

[scroll addSubview:imgView];

}

scroll.contentSize = CGSizeMake(320 * 4, 480);

scroll.pagingEnabled = YES;

scroll.delegate = self;

scroll.showsHorizontalScrollIndicator = NO;

[self.view addSubview:scroll];

}

//拖拽下，就进入主界面

-(void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset

{

NSInteger index = scrollView.contentOffset.x; //960

if(index > 1000)

{

CYAppDelegate *appDelegate = [UIApplication sharedApplication].delegate;

appDelegate.window.rootViewController = appDelegate.rootVC;

[[NSUserDefaults standardUserDefaults] setObject:[NSNumber numberWithBool:YES] forKey:@"first"];

[[NSUserDefaults standardUserDefaults] synchronize];

}

＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝

UIViewController *vc = nil;

NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];

BOOL key = [userDefaults boolForKey:@"firstLuanch"];

if (!key)

{

//将字符串转换为Class（类）实例化对象的第二种方法!

vc = [[NSClassFromString(@"QFWelcomeViewController") alloc] init];

//vc = [[QFWelcomeViewController alloc] init];

[userDefaults setBool:YES forKey:@"firstLuanch"];

[userDefaults synchronize];

}

else

{

vc = [[NSClassFromString(@"QFMainViewController") alloc] init];

//vc = [[QFMainViewController alloc] init];

}

self.window.rootViewController = vc;

19 UITableView

分割线样式

//UITableViewCellSeparatorStyleNone 没分割线

//UITableViewCellSeparatorStyleSingleLine 默认的样式

tabView.separatorStyle = UITableViewCellSeparatorStyleSingleLine;

／／分割线颜色

tabView.separatorColor = [UIColor redColor];

1)提供数据

_dataSource = [[NSMutableArray alloc] init];

for (NSInteger i = 0; i < 4; ++i) {

[_dataSource addObject:@"张三"];

[_dataSource addObject:@"王五"];

[_dataSource addObject:@"李四"];

[_dataSource addObject:@"赵六"];

}

2)创建tableView，并遵守数据代理协议<UITableViewDataSource>

UITableView *tabv = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, 320, 480) style:UITableViewStylePlain];

//UITableViewStylePlain 列表模式

//UITableViewStyleGrouped 分组模式

列表模式：

分组模式：

[self.view addSubview:tabv];

tabv.dataSource = self;

3)设置tableView数据三部曲

//1.一共有多少段数据要显示,默认为1段

//2.每一段有多少行数据要显示

//3.每一行数据如何显示

//告诉tableview有多少段

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

{

return _dataSource.count;

}

//每段有几行

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

{

return [_dataSource[section] count];

}

//每行怎么显示(复用，减少cpu的压力)

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

//cell的复用

//1.从tableview中取出可以复用的cell

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];

//如何将数组的内容显示到cell上面

//indexPath用来表示当前行所处的位置

//indexPath.section; //当前是第几段

//indexPath.row; //当前段的第几行 == 数组下标

//2.如果复用队列中没有可复用的cell,返回nil

if (cell == nil)

{

//3.没有可复用的cell,则需要创建新的cell

cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"cell"];

}

//获取当前的段

NSArray *section = _dataSource[indexPath.section];

//再从段中获取数据

NSString *name = section[indexPath.row];

cell.textLabel.text = name;

return cell;

}

tableView常用方法

1 设置行高

首先要遵循外观的代理协议 <UITableViewDelegate>

//设置行高

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath

{

//计算cell的高度

name表示每行的的字符串的CGSize，CGSize的height就是字符串的高度

NSString *name = _dataSource[indexPath.row];

CGSize size = [name sizeWithFont:[UIFont systemFontOfSize:17] constrainedToSize:CGSizeMake(320, 10000)];

return size.height + 100;

}

还要在（每行怎么显示）这个方法上写上这句话

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

cell.textLabel.numberOfLines = 0;

cell.detailTextLabel.numberOfLines = 0;

2 使cell向左滑，删除cell

//向左滑删除，只要重写这个就可以了，不用在编辑模式下，就可以删除了

- (void)tableView:(UITableView *)tableView

commitEditingStyle:(UITableViewCellEditingStyle)editingStyle

forRowAtIndexPath:(NSIndexPath *)indexPath

{

//先删除数据

[_dataSource removeObjectAtIndex:indexPath.row];

NSArray *array = @[indexPath];

[tableView deleteRowsAtIndexPaths:array withRowAnimation:UITableViewRowAnimationFade];

}

3 定制删除按钮上的文字

//定制删除按钮上的文字内容

- (NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath

{

return @"删除";

}

4 进入编辑模式1 （一般用这个）

1)self.navigationItem.rightBarButtonItem = self.editButtonItem;

2)重写系统方法

- (void)setEditing:(BOOL)editing animated:(BOOL)animated

{

[super setEditing:editing animated:animated];

[_tableView setEditing:editing animated:YES];

}

4 进入编辑模式2

1）首先要创建一个按钮

UIButton *btn = [UIButton buttonWithType:UIButtonTypeSystem];

[btn addTarget:self action:@selector(entryEdit) forControlEvents:UIControlEventTouchUpInside];

btn.frame = CGRectMake(10, 30, 100, 50);

[btn setTitle:@"编辑" forState:UIControlStateNormal];

[self.view addSubview:btn];

2）按住按钮，进入编辑模式

//进入编辑模式

- (void)entryEdit

{

UITableView *tb = (UITableView *)[self.view viewWithTag:1];

//判断当前是否已经进入编辑模式

[tb setEditing:!tb.isEditing animated:YES];

}

定制某行不能编辑(第一行不能编辑)

-(BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath

{

／／第一行不能编辑

if (indexPath.row == 0)

{

return NO;

}

return YES;

}

5 确定每一行的编辑样式

- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath

{

if (indexPath.row % 2 == 0)

{

return UITableViewCellEditingStyleInsert;

}

return UITableViewCellEditingStyleDelete;

}

做出来效果如上，第一个为“加”，第二个为“减”，“加”可以添加信息，减可以删除信息！

如果要编辑时候，按“加”或者“减”，要由反应，则需要重写以下方法：

- (void)tableView:(UITableView *)tableView

commitEditingStyle:(UITableViewCellEditingStyle)editingStyle

forRowAtIndexPath:(NSIndexPath *)indexPath

{

//判断当前的编辑模式是+还是-

//1.先将数组的内容删除

// 1-1)先找到要操作的段

NSMutableArray *section = _dataSource[indexPath.section];

switch (editingStyle) {

case UITableViewCellEditingStyleInsert:

//插入zhaoliu（下面这个方法更好！！！一定要这样写）

[self.data[indexPath.section] insertObject:@"zhaoliu" atIndex:indexPath.row];

[tabView insertRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationRight];

break;

case UITableViewCellEditingStyleDelete:

／／当段中只剩下一行时候，就把段删除了（要有这个才行！！！）

if([self.data[indexPath.section] count] == 1)

{

//把一段的数据全部删除

[self.data removeObjectAtIndex:indexPath.section];

NSMutableIndexSet *indexSet = [NSMutableIndexSet indexSet];

[indexSet addIndex:indexPath.section];

//把这段全部删除

[tabView deleteSections:indexSet withRowAnimation:UITableViewRowAnimationRight];

}

else

{

／／当段中还有好几行时候，就把一行一行删除了

[self.data[indexPath.section] removeObjectAtIndex:indexPath.row];

[tabView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationRight];

}

break;

default:

break;

}

//插入数据

- (void)insertValue

{

UITableView *tb = (UITableView *)[self.view viewWithTag:1];

//1.将要插入的数据插入到数组中

// 1-1)找到要插入的段

NSMutableArray *section = _dataSource[0];

[section insertObject:@"千锋" atIndex:1];

//2.插入新的cell

// 2-1)需要自己创建一个NSIndexPath对象

NSIndexPath *path = [NSIndexPath indexPathForRow:1 inSection:0];

// 2-2)将2-1创建好的对象放到数组中

NSArray *paths = @[path];

[tb insertRowsAtIndexPaths:paths withRowAnimation:UITableViewRowAnimationAutomatic];

}

6 想要在编辑模式下移动我们的cell（必须要重写我们三个方法）

//是否能移动

-(BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath

{

return YES;

}

//设置不同组是否可以移动

-(NSIndexPath *)tableView:(UITableView *)tableView targetIndexPathForMoveFromRowAtIndexPath:(NSIndexPath *)sourceIndexPath toProposedIndexPath:(NSIndexPath *)proposedDestinationIndexPath

{

//返回值为sourceIndexPath 不能移动

//返回proposedDestinationIndexPath 可以移动

if(sourceIndexPath.section == proposedDestinationIndexPath.section)

return proposedDestinationIndexPath;

return sourceIndexPath;

}

//在这个方法里面修改数据

-(void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath

{

／／保存数据

NSString *str = self.data[sourceIndexPath.section][sourceIndexPath.row];

／／删除数据

[self.data[sourceIndexPath.section] removeObjectAtIndex:sourceIndexPath.row];

／／插入数据

[self.data[destinationIndexPath.section] insertObject:str atIndex:destinationIndexPath.row];

}

7 编辑模式下的效果（两种）

//设置多选,默认为NO

tableView.allowsMultipleSelectionDuringEditing = NO;

tableView.allowsMultipleSelectionDuringEditing = YES;

8 点击按钮，滚动到指定位置（滚动到第三段第0行）

1）创建按钮

UIButton *scrollBtn = [UIButton buttonWithType:UIButtonTypeSystem];

[scrollBtn addTarget:self action:@selector(scrollTableView) forControlEvents:UIControlEventTouchUpInside];

scrollBtn.frame = CGRectMake(220, 30, 100, 50);

[scrollBtn setTitle:@"滚动" forState:UIControlStateNormal];

[self.view addSubview:scrollBtn];

2) 触发方法

//滚动到指定位置

- (void)scrollTableView

{

UITableView *tb = (UITableView *)[self.view viewWithTag:1];

NSIndexPath *path = [NSIndexPath indexPathForRow:0 inSection:3];

//滚动到指定位置

//UITableViewScrollPositionTop 指定path的cell在最上面

//UITableViewScrollPositionMiddle 指定path的cell在中间

//UITableViewScrollPositionBottom 指定path的cell在底部

[tb scrollToRowAtIndexPath:path atScrollPosition:UITableViewScrollPositionBottom animated:YES];

}

9 在平时时候，点击cell的时候，触发事件（点击王五-2-1时，打印信息）

//点击cell时触发

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

{

NSArray *section = _dataSource[indexPath.section];

NSString *name = section[indexPath.row];

NSLog(@"name = %@", name);

}

10 设置段索引

//设置段索引

- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView

{

//可以是任何字符串,如果索引数超过段数,点击后面的段没有反应

NSArray *titles = @[@"1", @"2", @"3", @"4", @"5", @"6", @"7"];

return titles;

}

11 设置段头段尾的标题

//设置段头和段尾标题

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section

{

NSString *s = [NSString stringWithFormat:@"第 %d 段段头", section];

return s;

}

- (NSString *)tableView:(UITableView *)tableView titleForFooterInSection:(NSInteger)section

{

NSString *s = [NSString stringWithFormat:@"第 %d 段段尾", section];

return s;

}

12 表头表尾（表头表尾的大小不限制）

tableView.tableHeaderView = sc;

tableView.tableFooterView = footView;

13 搜索框

设置代理UITableViewDataSource, UISearchDisplayDelegate

—》

//1.创建搜索框

UISearchBar *searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];（一般为44）

searchBar.placeholder = @"请输入关键字";

//2.监听搜索事件

//不是ViewController的子类,主要是为搜索做服务的

UISearchDisplayController *_displayController;(必须声明为成员变量！！！！)

_displayController = [[UISearchDisplayController alloc] initWithSearchBar:searchBar contentsController:self];

//三个代理

_displayController.delegate = self;

//5.下面两个代理和tableView一样，只是名字不一样！

_displayController.searchResultsDataSource = self;

_displayController.searchResultsDelegate = self;

tableView.tableHeaderView = searchBar;

//4.将过滤好的数据单独使用一个数据存放

NSMutableArray *_searchResult = [[NSMutableArray alloc] init];

如果用xib创建

应写搜索框注册xib，并实例化更过的cell

[_displayControl.searchResultsTableView registerNib:[UINib nibWithNibName:@"WLDTableViewCell" bundle:nil] forCellReuseIdentifier:@"cell_search"];

}

//完成数据的过滤

- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString

{

NSLog(@"%@", searchString);

//每次过滤之前都要将之前的数据清空

[_searchResult removeAllObjects];

//3.在搜索事件中对数据进行过滤处理

for (NSString *name in _dataSource)

{

NSRange range = [name rangeOfString:searchString];

if (range.location != NSNotFound)

{

[_searchResult addObject:name];

}

NSLog(@"%@", _searchResult);

return YES;

}

还有继续改下tabelView三步曲

//有几段

-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

{

if (tableView == searchDisplay.searchResultsTableView)

{

return 1;

}

return _dataSource.count;

}

//有几行

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

{

if (tableView == searchDisplay.searchResultsTableView)

{

return _searchResult.count;

}

return [_dataSource[section] count];

}

//每行怎么显示

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];

if (cell == nil)

{

cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"cell"];

}

NSMutableArray *section = _dataSource[indexPath.section];

if (tableView == searchDisplay.searchResultsTableView)

{

cell.textLabel.text = _searchResult[indexPath.row];

}

else

{

cell.textLabel.text = section[indexPath.row];

}

return cell;

=========================

xib

WLDTableViewCell *cell;

if (tableView == _displayControl.searchResultsTableView)

{

cell = [tableView dequeueReusableCellWithIdentifier:@"cell_search"];

WLDCellDataModel *dataModel = _searchData[indexPath.row];

[cell fillCellWithData:dataModel];

}

else

{

cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];

WLDCellDataModel *dataModel = _dataSource[indexPath.row];

[cell fillCellWithData:dataModel];

}

修改段头字符串（按系统来修改）

-(NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section

{

return @"段头eklfj";

}

14 定制段头内容（自定义段头需要在这个方法内进行修改）

- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section

{

return 40;

}

//定制每段段头显示内容

- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section

{

QFHeadView *v = [[QFHeadView alloc] initWithFrame:CGRectMake(0, 0, 320, 40) section:section];

如果是用xib写的，用init方法找不到我们的xib，这时候我们会用以下方法，初始化。

NSArray *array = [[NSBundle mainBundle] loadNibNamed:@"WLDPersonSectionView（XIb名字）” owner:self options:nil];

WLDPersonSectionView *sectionView = array[0];

//记录当前段的编号

v.tag = section;

//让自己的view继承自UIControl,可以利用系统现成的方法来实现事件的监听

[v addTarget:self action:@selector(expand:) forControlEvents:UIControlEventTouchUpInside];

v.b ackgroundColor = [UIColor colorWithRed:arc4random() % 256 / 255.0 + 0.2 green:arc4random() % 256 / 255.0 + 0.2 blue:arc4random() % 256 / 255.0 + 0.2 alpha:1];

return v;

}

15 点击段头可以折叠（如下图）

—》

1）首先段头点击触发方法

//定制每段段头显示内容

- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section

{

QFHeadView *v = [[QFHeadView alloc] initWithFrame:CGRectMake(0, 0, 320, 40) section:section];

//记录当前段的编号

v.tag = section;

//让自己的view继承自UIControl,可以利用系统现成的方法来实现事件的监听

[v addTarget:self action:@selector(expand:) forControlEvents:UIControlEventTouchUpInside];

v.backgroundColor = [UIColor colorWithRed:arc4random() % 256 / 255.0 + 0.2 green:arc4random() % 256 / 255.0 + 0.2 blue:arc4random() % 256 / 255.0 + 0.2 alpha:1];

return v;

}

2）使段头模型一个属性（close）改变，并刷新我们点击的那个段

//使其中一段折叠

- (void)expand:(QFHeadView *)sender

{

//1.保存段的编号

//2.在事件处理函数中获取当前段的编号

//3.通过该编号获取到当前段的信息

//获取段的信息（第几段里面的东西）

QFSectionModal *section = _dataSource[sender.tag];

section.close = !section.isClose;

//重新触发代理方法,所有的代理方法都会重新过一遍

UITableView *tb = (UITableView *)[self.view viewWithTag:1];

//刷新段

NSMutableIndexSet *set = [[NSMutableIndexSet alloc] init];

//刷新当前段

[set addIndex:sender.tag];

//刷新当前段

[tb reloadSections:set withRowAnimation:UITableViewRowAnimationAutomatic];

//刷新行

//tb reloadRowsAtIndexPaths:<#(NSArray *)#> withRowAnimation:<#(UITableViewRowAnimation)#>

}

3）使行数为0 （就可以折叠）

//2.每段多少行

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

{

//获取当前段信息

QFSectionModal *s = _dataSource[section];

if (s.isClose)

{

NSLog(@"关闭");

return 0;

}

//返回真实的行数

return s.rows.count;

}

16 多项删除

1)首先进入编辑模式

//进入编辑模式

- (void)entryEdit

{

UITableView *tb = (UITableView *)[self.view viewWithTag:1];

tb.editing = !tb.isEditing;

}

2)点击删除，触发事件

//确定删除

- (void)commitEdit

{

UITableView *tb = (UITableView *)[self.view viewWithTag:1];

//获取用户当前所选的内容

NSArray *rows = tb.indexPathsForSelectedRows;

//删除数据

//分段处理

//获取总段数

NSInteger count = _dataSource.count;

for (NSInteger i = 0; i < count; ++i)

{

NSMutableIndexSet *indexSet = [[NSMutableIndexSet alloc] init];

for (NSIndexPath *path in rows)

{

NSLog(@"%@", path);

if (path.section == i)

{

[indexSet addIndex:path.row];

}

//删除当前段的元素

NSMutableArray *section = _dataSource[i];

[section removeObjectsAtIndexes:indexSet];

}

//处理UI

[tb deleteRowsAtIndexPaths:rows withRowAnimation:UITableViewRowAnimationAutomatic];

}

17 自定义cell (xib 或者不用xib)

首先建立一个xib

1）继承我们自己的tableViewCell

2）连线

3) 在自己的tableViewCell中写个方法（把数据加载到模型中）：

- (void)fillCellWithData:(WLDData *)DataModel

然后加载xib

//加载xib

UINib *nib = [UINib nibWithNibName:@"WLDTableViewCell" bundle:nil];

//注册xib,并且会实例化足够多的cell

[_tab registerNib:nib forCellReuseIdentifier:@"cell"];

或者不用xib （控件放在contentView上面）

//注册自定义cell对象

[_tableView registerClass:[QFTableViewCell class] forCellReuseIdentifier:@"cell"];

自定义cell

//每行怎么显示

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

//注册cell

WLDTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];

//添加数据

WLDData *dataModel = _dataSource[indexPath.row];

[cell fillCellWithData:dataModel];

在cell的最右侧弄个控件（可以是自定义的，也可以是系统自带的）

如图

//定制右侧显示的内容

cell.accessoryType = XXX;

UITableViewCellAccessoryNone,

UITableViewCellAccessoryDisclosureIndicator, >

UITableViewCellAccessoryDetailDisclosureButton, i>

UITableViewCellAccessoryCheckmark, √

UITableViewCellAccessoryDetailButton i

return cell;

}

18 在导航控制器上加一个tabelView，出现视图偏移

必须要加这个东西，这个是在IOS7以后才出现的！

//不允许调整scrollview的位置

self.automaticallyAdjustsScrollViewInsets = NO;

// Do any additional setup after loading the view.

UITableView *tb = [[UITableView alloc] initWithFrame:CGRectMake(0, 64, 320, 480 - 64) style:UITableViewStylePlain];

19 按住一个按钮，然后跳出这个框

在头文件要遵循协议就可以了UIAlertViewDelegate,

UIAlertView

- (void)showAlertView

{

//对话框

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示框" message:nil delegate:self cancelButtonTitle:@"确定" otherButtonTitles:@"取消", nil];

//风格

UIAlertViewStyleSecureTextInput, 密码框

UIAlertViewStylePlainTextInput, 文本框

UIAlertViewStyleLoginAndPasswordInput 文本+密码

alert.alertViewStyle = UIAlertViewStyleLoginAndPasswordInput;

//显示对话框

[alert show];

}

点击确定时候，触发方法里面0，点击取消时触发下面方法里面1

//获取用户点击的按钮 UIAlertViewDelegate

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex

{

NSLog(@"+++");

if (buttonIndex == 0)

{

//获取文本框和密码框

UITextField *t1 = [alertView textFieldAtIndex:0];

UITextField *t2 = [alertView textFieldAtIndex:1];

NSLog(@"确定:%@, %@", t1.text, t2.text);

}

else if (buttonIndex == 1)

{

NSLog(@"取消");

}

20 按住一个按钮，跳出这个框

在头文件要遵循协议就可以了 UIActionSheetDelegate

UIActionSheet

UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:@"删除所有" otherButtonTitles:@"1", @"2", @"3", @"4", nil];

//在指定view上显示

[sheet showInView:self.view];

//监听ActionSheet按钮

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex

{

NSLog(@"index = %d", buttonIndex);

}

21 点击按钮把照片保存到系统相册中

- (void)saveToAlbum

{

//保存相片到相册

UIImage *image = [UIImage imageNamed:@"3.jpg"];

UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);

}

//保存到相册的话就打印成功

- (void) image: (UIImage *) image

didFinishSavingWithError: (NSError *) error

contextInfo: (void *) contextInfo

{

if (error != nil)

{

NSLog(@"失败:%@", error);

}

else

{

NSLog(@"成功");

}

22 从相册选择图片显示在屏幕上

在头文件遵守代理方法

@interface QFViewController : UIViewController <UIImagePickerControllerDelegate>

//从相册选择图片显示到屏幕上

- (void)image1

{

UIImagePickerController *picker = [[UIImagePickerController alloc] init];

picker.delegate = self;

//指定从哪里获取照片

//数据源

//UIImagePickerControllerSourceTypePhotoLibrary 系统相册

//UIImagePickerControllerSourceTypeCamera 摄像头

picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

picker.allowsEditing = YES;

[self presentViewController:picker animated:YES completion:nil];

}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

{

//获取选中图片并且显示

UIImage *image = info[UIImagePickerControllerOriginalImage];

_imageView.image = image;

[picker dismissViewControllerAnimated:YES completion:nil];

}

代理==—==-=-=-=-=—非常好

//Controller2 委托 Controller1 接收处理好的数据

controller2做不了，让controller1做事

// c2被代理 c1代理

//1、建立协议

//2、c1 遵守并实现协议

//3、c1 设置代理对象 c2.delegate = self;

//3、c2 中声明代理成员

//4、c2 [self.delegate displayData:@"vc2回传的数据"];

写文件，读文件

写文件：

NSString *str = [NSString stringWithContentsOfFile:@"/Users/lcy/Desktop/test" encoding:NSUTF8StringEncoding error:nil];

读文件：

NSString *str = [NSString stringWithContentsOfFile:@"/Users/lcy/Desktop/test" encoding:NSUTF8StringEncoding error:nil];

通知中心：（1 对多）

首先如果a 传给 b

a是发送者

b是接收者

首先在b上先初始化一个通知中心

- (void)viewDidLoad

{

[super viewDidLoad];

// Do any additional setup after loading the view from its nib.

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(recvMes:) name:@"name" object:nil];

}

然后写recvMes:方法（可以接收从通知中心那里传来的值）

-(void)recvMes:(NSNotification *)no

{

switch ([[no object] boolValue]) {

case YES:

self.view.backgroundColor = [UIColor redColor];

break;

case NO:

self.view.backgroundColor = [UIColor greenColor];

break;

default:

break;

}

在a上，点击开关switch，改变开关的值，然后发送值给通知中心

- (IBAction)valueChange:(id)sender {

UISwitch *sw = (UISwitch *)sender;

[[NSNotificationCenter defaultCenter] postNotificationName:@"name" object:[NSNumber numberWithBool:sw.on]];

}

手势：

缩放手势：

-(void)pinch:(UIPinchGestureRecognizer *)pin

{

NSLog(@"%f",pin.scale);

_imgView.transform = CGAffineTransformScale(_imgView.transform, pin.scale, pin.scale);

//重置

pin.scale = 1.0f;

}

旋转手势：

-(void)rotation:(UIRotationGestureRecognizer *)sender

{

_imgView.transform = CGAffineTransformRotate(_imgView.transform, sender.rotation);

sender.rotation = 0.0f;

}

快速滑动手势：

-(void)swipeGesture

{

UISwipeGestureRecognizer *swip1 = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swip:)];

//快速向左滑动

swip1.direction = UISwipeGestureRecognizerDirectionLeft;

[_imgView addGestureRecognizer:swip1];

UISwipeGestureRecognizer *swip = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swip:)];

//快速向右滑动

swip.direction = UISwipeGestureRecognizerDirectionRight; //3

[_imgView addGestureRecognizer:swip];

}

-(void)swip:(UISwipeGestureRecognizer *)sender

{

switch (sender.direction) {

case 1:

//如果向左滑，图片应该怎么样

break;

case 2:

break;

default:

break;

}

滑动手势：(侧滑)

-(void)pan:(UIPanGestureRecognizer *)sender

{

switch (sender.state) {

//开始滑动

case UIGestureRecognizerStateBegan:

{

_beginPoint = [sender locationInView:self.view];

_curPoint = self.imgView.center;

}

break;

//滑动过程中

case UIGestureRecognizerStateChanged:

{

CGPoint point = [sender locationInView:self.view];

NSInteger x_offset = point.x - _beginPoint.x;

NSInteger y_offset = point.y - _beginPoint.y;

//现在的坐标+滑动的坐标

_imgView.center = CGPointMake(_curPoint.x + x_offset, _curPoint.y + y_offset);

}

break;

case UIGestureRecognizerStateEnded:

break;

default:

break;

}

长按手势：

-(void)longPressGuesture

{

UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)];

[_imgView addGestureRecognizer:longPress];

}

控件的一些使用

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