UI学习之常用方法

1.-(BOOL) respondsToSelector: selector 用来判断是否有以某个名字命名的方法(被封装在一个selector的对象里传递)

 if ([delegate respondsToSelector:@selector(didFinishUpload:)]) {
 　　[delegate didFinishUpload:self];
 }

视图篇

1.[self presentViewController:jump animated:YES completion:nil];//视图跳转[self dismissViewControllerAnimated:YES completion:nil];//视图回跳

2.self.window .rootViewController = loginVC;给window添加根视图控制器。

3.   recruitmentViewController *recruitment = [[recruitmentViewController alloc] init];

[UIApplication sharedApplication].delegate.window.rootViewController = recruitment;在非

#import "AppDelegate.h"中给window添加根视图控制器。

4. [self.window makeKeyAndVisible];//显示(使其可见)

5.self.window.frame = [[UIScreen mainScreen] bounds];//指定window大小跟屏幕大下一致

6.   [viewF insertSubview:view2 atIndex:1];在viewF第n层插入一个子视图

7.  view3.alpha = 0.3;//透明度     view3.hidden = NO;//是否隐藏,隐藏不需要的的视图

8.  [viewF insertSubview:view3 aboveSubview:view4];将view3子视图添加到view4子视图下

[viewF insertSubview:view3 belowSubview:view4];//反之

9.  [viewF exchangeSubviewAtIndex:2 withSubviewAtIndex:3];//交换两个位置的视图(父视图上面的第一层为1)

10. [viewF sendSubviewToBack:view4];//将某个子视图移到父视图的最底层（在确保view4已经添加到了视图中的前提下）

10. UIView *view5 = [viewF viewWithTag:3];//获取父视图中标签为3的视图     view5.backgroundColor = [UIColor blackColor];

11. view4.userInteractionEnabled = YES;//是否允许用户点击（默认YES）,如果设置成no，子视图不会覆盖父视图的点击事件

self.view.userInteractionEnabled = YES;//如果父视图不允许交互，那么子视图的事件也会被屏蔽

12.   b.center = CGPointMake(180, 300);//以(180, 300)为视图中心中心重新定位

13. label.font = [UIFont systemFontOfSize:18];//系统字体

14./label.font = [UIFont boldSystemFontOfSize:18];//系统字体加粗

15.label.font = [UIFont fontWithName:<#(NSString *)#> size:<#(CGFloat)#>];//自定义字体，第一个参数代表字体名，第二个参数代表大小

16.label.numberOfLines = 0;//设置为可现显示任意行

label.lineBreakMode = NSLineBreakByWordWrapping;//换行样式

17.label.textAlignment = NSTextAlignmentRight;//对齐方式

18.label.shadowColor = [UIColor blackColor];//文本的阴影颜色

19.label.shadowOffset = CGSizeMake(2, 3);//文本的阴影偏移

20. label.enabled = NO;//是否激活，默认YES

21.

1. lineBreakMode：设置标签文字过长时的显示方式。
2. label.lineBreakMode = NSLineBreakByCharWrapping;    //以字符为显示单位显示，后面部分省略不显示。
3. label.lineBreakMode = NSLineBreakByClipping;        //剪切与文本宽度相同的内容长度，后半部分被删除。
4. label.lineBreakMode = NSLineBreakByTruncatingHead;  //前面部分文字以……方式省略，显示尾部文字内容。
5. label.lineBreakMode = NSLineBreakByTruncatingMiddle;    //中间的内容以……方式省略，显示头尾的文字内容。
6. label.lineBreakMode = NSLineBreakByTruncatingTail;  //结尾部分的内容以……方式省略，显示头的文字内容。
7. label.lineBreakMode = NSLineBreakByWordWrapping;    //以单词为显示单位显示，后面部分省略不显示。

button.layer.masksToBounds = YES;//多余部分剪切掉

按钮篇

1. UISwitch *switch1 = [[UISwitch alloc] initWithFrame:CGRectMake(30, 50, 100, 90)];//高度

2. switch1.onTintColor = [UIColor blueColor];//

3.switch1.tintColor = [UIColor redColor];

4.switch1.thumbTintColor = [UIColor purpleColor];

5. switch1.on = YES;//设置开关初始状态

6. [switch1 addTarget:self action:@selector(mySwitch:) forControlEvents:UIControlEventValueChanged];//绑定监听事件

7. UISegmentedControl *seg = [[UISegmentedControl alloc] initWithItems:@[@"122",@"123",@"121"]];

8.seg.frame = CGRectMake(20, 40, 200, 40);

9. NSLog(@"段数：%zi",seg.numberOfSegments);

10. [seg insertSegmentWithImage:[UIImage imageNamed:@"avatar"] atIndex:3 animated:YES];//插入图片，图片大小应合适

11. [seg setTitle:@"分段" forSegmentAtIndex:3];//给某一段设置标题

12.NSString *s = [seg titleForSegmentAtIndex:1];//获取标题

13.UIImage *image = [seg imageForSegmentAtIndex:3];//获取图片

14.[seg setWidth:100 forSegmentAtIndex:2];//设置某段的宽

15.[seg setEnabled:NO];//整体不被激活

16.[seg setEnabled:NO forSegmentAtIndex:1];//设置某一段是否被激活

17.seg.selectedSegmentIndex = 1;//设置默认选中项

18. NSLog(@"选中：%zi",seg.selectedSegmentIndex);//获取当前被选中的段

19. seg.tintColor = [UIColor redColor];//边框和选中颜色

20.[seg setBackgroundImage:[UIImage imageNamed:@"btn_select"] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];

21.[seg addTarget:self action:@selector(segmentChange) forControlEvents:UIControlEventValueChanged];//绑定监听事件

22.UISegmentedControl *seg1 = [[UISegmentedControl alloc] initWithFrame:CGRectMake(20, 100, 200, 40)];

23.[seg1 insertSegmentWithTitle:@"分段" atIndex:1 animated:YES];

24.[seg1 insertSegmentWithTitle:@"分段1" atIndex:0 animated:YES];//增加

25.[seg1 removeSegmentAtIndex:1 animated:YES];//移除

Button:

1.[myButton.layer setCornerRadius:20.0];//设置圆角半径
2.myButton.frame = CGRectMake(15+90*j, 150+60*i, 70, 40);
3.myButton.backgroundColor = [UIColor orangeColor];//橙黄色
4.myButton.titleLabel.font = [UIFont systemFontOfSize: 30]; ;//字体大小
5.[myButton setTitle:ButtonTag[i*4+j] forState:UIControlStateNormal];//设置标题和

6.button.showsTouchWhenHighlighted = YES;//点击高亮

7.[myButton setImage:[UIImage imageNamed:@"home"] forState:UIControlStateNormal];//设置图片

8.[headLeftLabel setContentHorizontalAlignment:UIControlContentHorizontalAlignmentLeft];//button文字对齐方式

图片篇

1. UIImage *img =[UIImage imageNamed:@"1.jpg"];    NSLog(@"%@",img);

2. UIImage *img1 = [UIImage imageWithContentsOfFile:@"/Users/yangjie/Pictures/3.jpg"];//通过路径获取图片

3. NSData *imgData = [NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://g.hiphotos.baidu.com/zhidao/pic/item/9f510fb30f2442a79fbc68ded343ad4bd113021e.jpg"]];//通过URL拿到图片的数据

4.UIImage *img2 = [UIImage imageWithData:imgData];

5. NSData *data1 = UIImageJPEGRepresentation(img2, 1);//图片转换成data，第一个是要转换的图片对象，第二个参数代表压缩质量（0~1浮点，1代表不压缩）

6. NSLog(@"--%zi",data1.length);

7. NSData *data2 = UIImagePNGRepresentation(img1);//图片转换成data

8.UIImageView *imgView = [[UIImageView alloc] initWithImage:img2];

imgView.frame = CGRectMake(20, 30, 200, 200);

9.float w = img2.size.width;//获取图片的宽 float h = img2.size.height;//获取图片的高

菜单篇

1..动态菜单

//UIViewController<UIActionSheetDelegate>//遵循动态菜单代理模式

 - (void) login
 {
     NSLog(@"点击");
     UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Delegate Example" delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:@"Destruct" otherButtonTitles:@"BUtton 1" , @"BUtton 2" , @"BUtton 3" , nil];
     [actionSheet showInView:self.tabBarController.view];
 }

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

switch (buttonIndex) {

case 0:  NSLog(@"Action Destructed!") ;break;

        case 1:   NSLog(@"Action Button 1 Clicked!");break;

case 2:  NSLog(@"Action Button 2 Clicked!");break;

case 3:  NSLog(@"Cancel Button Clicked!"); break;

default:  break;

}

}

2. UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"提示内容" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"按钮1",@"按钮2", nil];//alert创建

3.  alert.title = @"123";//设置标题

4.  alert.message = @"11111";//设置内容

5. [alert show];//使其能显示

6. [alert dismissWithClickedButtonIndex:0 animated:YES];//消失alert

画图篇

1.自定义画图，类似android的onDraw()

- (void)drawRect:(CGRect)rect;

is invoked automaticall,never call it directly!!

2.刷新视图，类似android的invalidate()

- (void)setNeedsDisplay;

When a view needs to be redrawn,use:

3.在非主线程中调用，需使用如下方法：

- (void)performSelector:(SEL)aSelector onThread:(NSThread *)thr withObject:(id)arg waitUntilDone:(BOOL)wait
      - (void)performSelectorOnMainThread:(SEL)aSelector withObject:(id)arg waitUntilDone:(BOOL)wait

4.setNeedsDisplay是不阻塞的，
     需要自己制造阻塞，
     setNeedsDisplay我理解就是告诉系统，等会帮哥把这块重新画一下。
     系统就知道了，等系统有空了，他就一起画了，
     如果想立即画出来，可能要用setNeedsLayout，
     或者不用drawInRect系列的方式，直接改view.image或者文字，加动画等方式实现吧。

5.setNeedsDisplay和layoutSubViews

首先两个方法都是异步执行的。而setNeedsDisplay会调用自动调用drawRect方法，这样可以拿到UIGraphicsGetCurrentContext，就可以画画了。而setNeedsLayout会默认调  用layoutSubViews，就可以处理子视图中的一些数据。
宗上所诉，setNeedsDisplay方便绘图，而layoutSubViews方便出来数据。

eg:

 #import "TuYa.h"

 @implementation TuYa
 - (id)initWithFrame:(CGRect)frame
 {
     self = [super initWithFrame:frame];
     if(self)
     {
         _lineArray = [[NSMutableArray alloc] init];
         UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
         button.frame = CGRectMake(, , , );
         [button setTitle:@"撤销" forState:UIControlStateNormal];
         button.backgroundColor = [UIColor orangeColor];
         [button addTarget:self action:@selector(undoDraw) forControlEvents:UIControlEventTouchUpInside];
         [self addSubview:button];
     }
     return self;
 }
 //每次开始触摸的时候增加一个新数组，数组记录画出的点，这些点用于回话
 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
 {
     [_lineArray addObject:[NSMutableArray arrayWithCapacity:]];
 }
 - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
 {
     UITouch *touch = [touches anyObject];
     CGPoint point = [touch locationInView:self];
     NSValue *value = [NSValue valueWithCGPoint:point];
     [[_lineArray lastObject] addObject:value];//给最后一根线加点
     [self setNeedsDisplay];//setNeedsDisplay会调用自动调用drawRect方法
 }
 - (void)drawRect:(CGRect)rect
 {
     CGContextRef context = UIGraphicsGetCurrentContext();//获得上下文
     CGContextSetStrokeColorWithColor(context, [UIColor redColor].CGColor);//画笔颜色
     for( int i =  ; i < _lineArray.count ; i ++ )
     {
         NSMutableArray *pointArray = [[NSMutableArray alloc] initWithArray:[_lineArray objectAtIndex:i]];
         for( int j =  ; j < pointArray.count- ; j ++ )
         {
             NSValue *a = pointArray[j];
             CGPoint b = [a CGPointValue];
             NSValue *c = pointArray[j+];
             CGPoint d = [c CGPointValue];

             CGContextMoveToPoint(context, b.x, b.y);
             CGContextAddLineToPoint(context, d.x, d.y);
         }
     }
     CGContextStrokePath(context);
 }
 - (void)undoDraw
 {
     [_lineArray removeLastObject];
     //会自动调用UIView的drawRect方法
     [self setNeedsDisplay];//重绘
 }
 /*
 // Only override drawRect: if you perform custom drawing.
 // An empty implementation adversely affects performance during animation.
 - (void)drawRect:(CGRect)rect {
     // Drawing code
 }
 */

 @end

程序篇

1.UITextField

 #import "ViewController.h"

 @interface ViewController ()<UITextFieldDelegate>//重写代理方法观看TextFiled执行过程
 {
 UITextField *field;
 UITextField *field1;
 }

 @end

 @implementation ViewController

 - (void)viewDidLoad {
     [super viewDidLoad];
     self.view.backgroundColor = [UIColor blackColor];//背景必须要设置
     self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@""]];//设置背景图片
     //创建自定义键盘
     UIView *keyView = [[UIView alloc]init];
     keyView.frame = CGRectMake(, , , );
     keyView.backgroundColor = [UIColor redColor];
     //对照
     field1 = [[UITextField alloc] init];
     field1.frame = CGRectMake(, , , );
     field1.backgroundColor = [UIColor whiteColor];
     field1.placeholder = @"占位符";//占位符
     //实验
     field = [[UITextField alloc] init];
     field.frame = CGRectMake(, , , );
     field.backgroundColor = [UIColor whiteColor];
     field.placeholder = @"占位符";//占位符

     field.borderStyle = UITextBorderStyleNone ;//边框风格
 /*
  typedef NS_ENUM(NSInteger, UITextBorderStyle) {
  UITextBorderStyleNone,
  UITextBorderStyleLine,//黑框
  UITextBorderStyleBezel,//立体
  UITextBorderStyleRoundedRect//圆角
  };
  */

      field.keyboardType = UIKeyboardTypeDefault;//设置键盘类型
 /*
  typedef NS_ENUM(NSInteger, UIKeyboardType) {
  UIKeyboardTypeDefault,                // Default type for the current input method.
  UIKeyboardTypeASCIICapable,           // Displays a keyboard which can enter ASCII characters, non-ASCII keyboards remain active
  UIKeyboardTypeNumbersAndPunctuation,  // Numbers and assorted punctuation.
  UIKeyboardTypeURL,                    // A type optimized for URL entry (shows . / .com prominently).
  UIKeyboardTypeNumberPad,              // A number pad (0-9). Suitable for PIN entry.
  UIKeyboardTypePhonePad,               // A phone pad (1-9, *, 0, #, with letters under the numbers).
  UIKeyboardTypeNamePhonePad,           // A type optimized for entering a person's name or phone number.
  UIKeyboardTypeEmailAddress,           // A type optimized for multiple email address entry (shows space @ . prominently).
  UIKeyboardTypeDecimalPad NS_ENUM_AVAILABLE_IOS(4_1),   // A number pad with a decimal point.
  UIKeyboardTypeTwitter NS_ENUM_AVAILABLE_IOS(5_0),      // A type optimized for twitter text entry (easy access to @ #)
  UIKeyboardTypeWebSearch NS_ENUM_AVAILABLE_IOS(7_0),    // A default keyboard type with URL-oriented addition (shows space . prominently).

  UIKeyboardTypeAlphabet = UIKeyboardTypeASCIICapable, // Deprecated

  };
 */
     field.returnKeyType = UIReturnKeyYahoo;//设置键盘return键样式
 /*
  typedef NS_ENUM(NSInteger, UIReturnKeyType) {
  UIReturnKeyDefault,
  UIReturnKeyGo,
  UIReturnKeyGoogle,
  UIReturnKeyJoin,
  UIReturnKeyNext,
  UIReturnKeyRoute,
  UIReturnKeySearch,
  UIReturnKeySend,
  UIReturnKeyYahoo,
  UIReturnKeyDone,
  UIReturnKeyEmergencyCall,
  };
  */

     field.background = [UIImage imageNamed:@""];//添加背景

     field.clearButtonMode = UITextFieldViewModeWhileEditing;//文明本后面加个"x"清除文本
 /*
  typedef NS_ENUM(NSInteger, UITextFieldViewMode) {
  UITextFieldViewModeNever,"X"从不出现
  UITextFieldViewModeWhileEditing,"X"编辑本文本时出现，否则消失
  UITextFieldViewModeUnlessEditing,"X"编辑本文本时消失，否则出现
  UITextFieldViewModeAlways//"X"永远存在
  };
  */
     field.clearsOnBeginEditing = YES; //重新点击，清除所有文本内容

 //    field.leftView = myView;//在文本左侧添加一视图
     field.leftViewMode = UITextFieldViewModeNever;
 /*
  typedef NS_ENUM(NSInteger, UITextFieldViewMode) {
  UITextFieldViewModeNever,
  UITextFieldViewModeWhileEditing,
  UITextFieldViewModeUnlessEditing,
  UITextFieldViewModeAlways
  };
  */

     field.inputView = keyView;//当文本框在编辑时的弹出视图，类似键盘

     field.delegate = self;//设置代理(由当前视图来执行)下边重写代理方法
     field1.delegate = self;

     [self.view addSubview:field];
     [self.view addSubview:field1];
 }
 -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
 {
     [self.view endEditing:YES];
     NSLog(@"点击事件");
 }

 //代理方法的实现,如果返回为NO则相应的操作不被实现(例如:删除文本不起作用)
 - (BOOL)textFieldShouldBeginEditing:(UITextField *)textField
 {
     if(textField == field)
     NSLog(@"field将要编辑");
     else if(textField == field1)
         NSLog(@"field1将要编辑");
     return YES;
 }// 将要编辑。

 - (void)textFieldDidBeginEditing:(UITextField *)textField
 {
     if(textField == field)
         NSLog(@"field开始编辑");
     else if(textField == field1)
         NSLog(@"field1开始编辑");
 }// 开始编辑
 //- (BOOL)textFieldShouldEndEditing:(UITextField *)textField;          // 将要结束编辑
 //- (void)textFieldDidEndEditing:(UITextField *)textField;             // 结束编辑
 //
 - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
 {
     if(textField == field)
         NSLog(@"field开始键入字符");
     else if(textField == field1)
         NSLog(@"field1开始键入字符");
     return YES;
 }// 开始键入字符
 //
 - (BOOL)textFieldShouldClear:(UITextField *)textField
 {
     if(textField == field)
         NSLog(@"field开始删除字符");
     else if(textField == field1)
         NSLog(@"field1开始删除字符");
     return YES;
 }//  在执行field.clearButtonMode(后面有"X")起作用
 - (BOOL)textFieldShouldReturn:(UITextField *)textField
 {
     if(textField == field)
         NSLog(@"field返回");
     else if(textField == field1)
         NSLog(@"field1返回");
     [self.view endEditing:YES];
     return YES;
 }// 返回时调用，可以利用其退出键盘

 - (void)didReceiveMemoryWarning {
     [super didReceiveMemoryWarning];
     // Dispose of any resources that can be recreated.
 }

 @end

1.UITextView

 #import "ViewController.h"

 @interface ViewController ()<UITextViewDelegate>
 {
     UITextView *textView;
 }
 @end

 @implementation ViewController

 - (void)viewDidLoad {
     [super viewDidLoad];
     textView = [[UITextView alloc] initWithFrame:CGRectMake(, , , )];
     textView.backgroundColor = [UIColor yellowColor];
     textView.editable = YES;//是否允许编辑
     textView.scrollEnabled = YES;//是否允许滚动
     textView.bounces = YES;//弹簧效果
     textView.layer.borderColor = [UIColor redColor].CGColor;//边框颜色
     textView.layer.cornerRadius = ;//圆角半径
     textView.layer.borderWidth = ;//边框粗细
     textView.layer.masksToBounds = YES;//设置超出主图层的部分把它给剪切掉。
     //阴影设置
     textView.clipsToBounds =NO;//要把其设为NO
     textView.layer.shadowColor=[UIColor redColor].CGColor;
     textView.layer.shadowOffset=CGSizeMake(, );
     textView.layer.shadowOpacity=;
     textView.layer.shadowRadius=;

     textView.returnKeyType = UIReturnKeyDefault;
 /*
  typedef NS_ENUM(NSInteger, UIReturnKeyType) {
  UIReturnKeyDefault,
  UIReturnKeyGo,
  UIReturnKeyGoogle,
  UIReturnKeyJoin,
  UIReturnKeyNext,
  UIReturnKeyRoute,
  UIReturnKeySearch,
  UIReturnKeySend,
  UIReturnKeyYahoo,
  UIReturnKeyDone,
  UIReturnKeyEmergencyCall,
  };
  */
     textView.delegate = self;
     self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@""]];
     [self.view addSubview:textView];
 }
 -(BOOL)textView:(UITextView *)textView1 shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
 {

     if([text isEqual:@"\n"])
     {
         [self.view endEditing:YES];
     }
     return YES;
 }

 -(void)textViewDidChange:(UITextView *)textView1
 {
     NSLog(@"%@",textView1.text);
 }//文本改变了之后
 - (void)didReceiveMemoryWarning {
     [super didReceiveMemoryWarning];
     // Dispose of any resources that can be recreated.
 }
 - (void)textViewDidBeginEditing:(UITextView *)textView1
 {
     NSLog(@"%@",textView1.text);
 }
 @end

UIScollView

 #import "ViewController.h"
 #define WIDE [[UIScreen mainScreen] bounds].size.width
 #define HIGH [[UIScreen mainScreen] bounds].size.height
 @interface ViewController ()<UIScrollViewDelegate>
 {
     UIScrollView *scrollVIew;
     UIImageView *imageView;
 }
 @end

 @implementation ViewController

 - (void)viewDidLoad {//注意: window大小 ->scrollView大小->

scrollView内容大小-> imageView大小 
  [super viewDidLoad]; 
 scrollVIew = [[UIScrollView alloc]initWithFrame: CGRectMake(, , WIDE-, HIGH-)]; 
 scrollVIew.backgroundColor= [UIColor grayColor]; 
 scrollVIew.contentSize = CGSizeMake(*, *);// scrollVIew内容的大小，与 scrollVIew大小无关 
 // scrollVIew.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://h.hiphotos.baidu.com/zhidao/pic/item/8b82b9014a90f603e4fbc5573b12b31bb051ed53.jpg"]]]]; 
 imageView = [[UIImageView alloc]initWithImage:[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://h.hiphotos.baidu.com/zhidao/pic/item/8b82b9014a90f603e4fbc5573b12b31bb051ed53.jpg"]]]];//从网络获取图片放至 imageView 
 imageView.frame = CGRectMake(, , *-, *-);//设置 imageView大小，此处比scrollVIew小一圈，是以scrollVIew坐标系为基准的 
 [scrollVIew addSubview:imageView];//将 imageView添加到scrollVIew 
 scrollVIew.contentOffset = CGPointMake(, );//设置初始位置 
 // CGPoint point = scrollVIew.contentOffset;////获取scrollView当前滚动的位置 
 // scrollVIew.bounces = NO;//是否有弹簧效果 
 // scrollVIew.showsHorizontalScrollIndicator = NO;//是否显示水平滚动条，默认yes 
 // scrollVIew.showsVerticalScrollIndicator = NO;//是否显示垂直滚动条 
 scrollVIew.pagingEnabled = NO;//是否允许整页滚动，默认no(跳页) 
 scrollVIew.scrollEnabled = YES;//是否允许滚动（手滚，强制跳转可以） 
 scrollVIew.scrollsToTop = NO;//是否允许用户点击状态栏时，滑动到顶部，默认yes 
 // [scrollVIew setContentOffset:CGPointMake(100, 0) animated:YES];//设置scrollView滚动到某个位置，是否有动画效果 
 // [scrollVIew scrollRectToVisible:CGRectMake(375, 20, self.view.frame.size.width, self.view.frame.size.height) animated:YES];//设置scrollView滚动到某可视区域，是否添加动画效果 
 scrollVIew.minimumZoomScale = 0.1;//最小缩放倍数 
 scrollVIew.maximumZoomScale = ;//最大缩放倍数 
 scrollVIew.delegate = self; 
  [self.view addSubview:scrollVIew]; 
 } 
 -(void)scrollViewDidScroll:(UIScrollView *)scrollView{ 
 //视图是否在滚动 
 } 
 -(void) scrollViewWillBeginDragging:(UIScrollView *)scrollView{ 
 //滚动视图开始被拖动 
 } 
 -(void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{ 
 //结束拖动， 
 } 
 -(void)scrollViewWillBeginDecelerating: (UIScrollView *)scrollView{ 
 //滚动视图开始减速 
 } 
 -(void)scrollViewDidEndDecelerating: (UIScrollView *)scrollView{ 
 //减速停止 
 } 
 -(UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{ 
 //实现缩放视图代理方法，不实现此方法无法缩放  //告诉scrollView，是哪个子视图要进行缩放 
 return imageView; 
 } 
 -(void)scrollViewDidZoom:(UIScrollView *)scrollView{ 
 //正在缩放 
 } 

 - (void)didReceiveMemoryWarning { 
  [super didReceiveMemoryWarning]; 
 // Dispose of any resources that can be recreated. 
 } 

 @end

UIPageView

 #import "ViewController.h"

 @interface ViewController ()<UIScrollViewDelegate>{
     UIPageControl *page;
     UIScrollView  *scrollView;
 }

 @end

 @implementation ViewController

 - (void)viewDidLoad {
     [super viewDidLoad];

     page = [[UIPageControl alloc] initWithFrame:CGRectMake(, , , )];
     page.backgroundColor = [UIColor clearColor];
     page.numberOfPages = ;//设置页数（多少个点）
     page.currentPage = ;//设置当前选中页
     NSLog(@"%ld",page.currentPage);//获取当前选中页下标
     page.pageIndicatorTintColor = [UIColor greenColor];//未选中颜色
     page.currentPageIndicatorTintColor = [UIColor redColor];//当前选中的颜色
     [page addTarget:self action:@selector(change:) forControlEvents:UIControlEventValueChanged];
     [self.view addSubview:page];

     scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(, , , )];
     scrollView.contentSize = CGSizeMake(, );
     scrollView.delegate = self;
     scrollView.pagingEnabled = YES;
     [self.view addSubview:scrollView];

     UIView *view = [[UIView alloc] initWithFrame:CGRectMake(, , , )];
     view.backgroundColor = [UIColor grayColor];
     [scrollView addSubview:view];

     UIView *view1 = [[UIView alloc] initWithFrame:CGRectMake(, , , )];
     view1.backgroundColor = [UIColor brownColor];
     [scrollView addSubview:view1];

     UIView *view2 = [[UIView alloc] initWithFrame:CGRectMake(, , , )];
     view2.backgroundColor = [UIColor purpleColor];
     [scrollView addSubview:view2];

 }

 -(void)change:(id)page{
     NSLog(@"--%zi",[page currentPage]);

     CGPoint p = {[page currentPage]*,};
     [scrollView setContentOffset:p animated:YES];
 }

 -(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{
     int index = scrollView.contentOffset.x/scrollView.frame.size.width;
     page.currentPage = index;
 }

 - (void)didReceiveMemoryWarning {
     [super didReceiveMemoryWarning];
     // Dispose of any resources that can be recreated.
 }

 @end

UITableView

//遵从协议<UITableViewDataSource,UITableViewDelegate>
//初始化
    myTableView2 = [[UITableView alloc] initWithFrame:CGRectMake(, , , ) style:UITableViewStylePlain];
    myTableView2.delegate = self;
    myTableView2.dataSource = self;
    [self.view addSubview:myTableView2];
//协议的实现
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return talentPool.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *string = @"cell";
    //尝试从可重用的cell队列中取出来(屏幕需要显示cell+1)
    //如果没有取到，就新建一个cell
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:string];//出列可重用的细胞与标识符
    if(cell == nil)
    {
        //实例化一个新的cell,cell有一个重用标识 @"cell"
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:string];
    }
    cell.textLabel.text = [talentPool[indexPath.row] name];
    cell.detailTextLabel.textColor = [UIColor redColor];
    cell.detailTextLabel.text = [NSString stringWithFormat: @"学校%@ 等级%d NO:%ld",[talentPool[indexPath.row] school],[talentPool[indexPath.row] levell],indexPath.row+];

    return cell;
}
//当我们点击某个cell时，会执行下面这个方法，方法中调用另一方法执行具体操作：
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    delete = indexPath.row;
}

UITableView

 //[tableVIew reloadData];//重新加载数据***********
 #import "ViewController.h"

 @interface ViewController ()<UITableViewDataSource,UITableViewDelegate>
 {
     long delete;
     UITableView *tableVIew;
     NSMutableArray  *array;
 }
 @end

 @implementation ViewController

 - (void)viewDidLoad {
     [super viewDidLoad];
     tableVIew = [[UITableView alloc]initWithFrame:self.view.bounds];
 //    tableVIew.backgroundView = [[UIImageView alloc]initWithImage:[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://pic.baike.soso.com/p/20131220/20131220045831-1022519378.jpg"]]]];
     tableVIew.separatorColor = [UIColor redColor];////设置tableView分割线的颜色
 //    UIImageView *imageVIew = [[UIImageView alloc]initWithImage:[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://pic.baike.soso.com/p/20131220/20131220045831-1022519378.jpg"]]]];//从网络获取图片
 //    imageVIew.frame = CGRectMake(0, 0 ,0, 40);
 //    tableVIew.tableHeaderView = imageVIew;//设置列表的头视图，可以是view或者其子类的对象
 //    tableVIew.tableFooterView = imageVIew;//设置列表的底部视图，可以是view或者其子类的对象
     tableVIew.separatorStyle = UITableViewCellSeparatorStyleSingleLine;//设置分割线风格
     /*
      typedef NS_ENUM(NSInteger, UITableViewCellSeparatorStyle) {
      UITableViewCellSeparatorStyleNone,//无分割线
      UITableViewCellSeparatorStyleSingleLine,//有内容处无分割线，否则有
      UITableViewCellSeparatorStyleSingleLineEtched   // 有分割线
      };
      */
 //       tableVIew.rowHeight = 80;//设置行高
     tableVIew.delegate = self;//设置代理
     tableVIew.dataSource = self;//设置数据源，因为在实现协议方法时，用了大量的返回值，所以需要对视图控制器实现代理

     [self.view addSubview:tableVIew];
     array  = [NSMutableArray arrayWithObjects:@"刘冠", @"刘冠", @"刘冠", @"刘冠",nil];

 }
 //协议方法实现
 #pragma mark - UITableViewDataSourceMethod-1
 //设置分组
 //- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
 //{
 //    return 3;
 //}
 //设置每组行数(默认一组)
 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
 {
 //    if(section == 0)//第一组
 //        return 4;
 //    else  if(section == 1)//第二组
 //        return 3;
 //    return 2;//第三组
     return array.count;//返回数组长度
 }
 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
 {
     static NSString *string = @"cell";
     //尝试从可重用的cell队列中取出来(屏幕需要显示cell+1)
     //如果没有取到，就新建一个cell
     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:string];//出列可重用的细胞与标识符
     if(cell == nil)
     {
         //实例化一个新的cell,cell有一个重用标识 @"cell"
         cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:string];
         /*
          typedef NS_ENUM(NSInteger, UITableViewCellStyle) {
          UITableViewCellStyleDefault,    // 只显示图片和标题
          UITableViewCellStyleValue1,        // 显示图片，标题和子标题（子标题在右边）
          UITableViewCellStyleValue2,        // 标题和子标题
          UITableViewCellStyleSubtitle    //上下结构  显示图片，标题和子标题（子标题在下边）
          };             // available in iPhone OS 3.0
          */
     }
     cell.backgroundColor = [UIColor clearColor];

cell.imageView //设置图片

//.tableHeaderView

 cell.textLabel.text =array[indexPath.row];  
77 cell.detailTextLabel.textColor = [UIColor redColor];  
78 // cell.detailTextLabel.text = [NSString stringWithFormat: @"郑州科技学院 NO:%ld", indexPath.row+1];  
79 //在现实中的实现方法  
80 // cell.textLabel.text = [talentPool[indexPath.row] name];  
81 // cell.detailTextLabel.text = [NSString stringWithFormat: @"学校%@ 等级%d NO:%ld",[talentPool[indexPath.row] school],[talentPool[indexPath.row] levell],indexPath.row+1];  
82 /**************************************/  
83 // cell.accessoryType/*配件*/= UITableViewCellAccessoryDetailDisclosureButton;//右侧标识图  
84 cell.accessoryView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"bug"]];//自定义右侧标识视图  
85 cell.selectionStyle = UITableViewCellSelectionStyleBlue;//设置cell被选中的颜色  
86 cell.textLabel.highlightedTextColor = [UIColor whiteColor];//选中状态下，字体颜色  
87 UIView *view = [[UIView alloc] initWithFrame:cell.frame];  
88 view.backgroundColor = [UIColor blueColor];  
89 cell.selectedBackgroundView = view;//自定义cell选中背景  
90 return cell;  
91 }  
92 //设置每组头部的标题  
93 - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{  
94 if(section == )//第一组  
95 return @"第一组";  
96 else if(section == )//第二组  
97 return @"第二组";  
98 return @"第三组";//第三组  
99 } 
 //设置每组底部标题 
 -(NSString *)tableView:(UITableView *)tableView titleForFooterInSection:(NSInteger)section{ 
 return @"END"; 
 } 
 //设置tableView是否可编辑，默认YES,向左滑动出现删除按钮 
 -(BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath{ 
 return YES; 
 } 
 //对tableView进行删除.....操作与上一个方法配合使用 
 -(void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath{  // tableVIew 
 NSLog(@"删除%ld",indexPath.row); 
  [array removeObjectAtIndex:indexPath.row]; 
 [tableVIew deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationMiddle];//删除行 
 } 
 //左侧索引显示信息，返回数组 
 - (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView  { 
 return ; 
 } 
 //设置每组底部视图高度 
 -(CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section{ 
 return ; 
 } 
 // 设置每组头部视图高度 
 -(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{ 
 return ; 
 } 
 //设置行高 
 -(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{ 
 return ; 
 } 
 //自定义组头部视图，会覆盖数据源中的设置头部标题方法 
 -(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{ 
 return nil; 
 } 
 //自定义组底部视图，会覆盖数据源中的设置底部标题方法 
 -(UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section{ 
 return nil; 
 } 
 //tableview行被点击，通过indexPath.row判断点击的是哪一行 
 //当我们点击某个cell时，会执行下面这个方法，方法中调用另一方法执行具体操作： 
 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
 { 
 delete = indexPath.row; 
 [tableVIew deselectRowAtIndexPath:indexPath animated:YES];//取消被选中 
 } 
 - (void)didReceiveMemoryWarning { 
  [super didReceiveMemoryWarning]; 
 } 

 @end

UIPageController

UIPageControl
#import "ViewController.h"

@interface ViewController ()<UIScrollViewDelegate>{

    UIScrollView *s;
    UIPageControl *p;
}

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    p = [[UIPageControl alloc]initWithFrame:CGRectMake(, , , )];//初始化创建
    p.numberOfPages = ;//设置页数
    p.currentPage = ;//设置当前页数
    p.backgroundColor = [UIColor clearColor];
    p.pageIndicatorTintColor = [UIColor orangeColor];//未选中颜色
    p.currentPageIndicatorTintColor = [UIColor greenColor];//当前选中颜色
    [p addTarget:self action:@selector(pag) forControlEvents:UIControlEventValueChanged];//valuechange!!!!
    [self.view addSubview:p];
    s = [[UIScrollView alloc]initWithFrame:CGRectMake(, , , )];
    s.contentSize = CGSizeMake(,);
    s.delegate = self;
    s.pagingEnabled = YES;
    [self.view addSubview:s];
    UIView *v = [[UIView alloc] initWithFrame:CGRectMake(, , , )];
    v.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"5.jpg"]];
    [s addSubview:v];
    UIView *v1 = [[UIView alloc] initWithFrame:CGRectMake(, , , )];
    v1.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"6.jpg"]];
    [s addSubview:v1];
    UIView *v2 = [[UIView alloc] initWithFrame:CGRectMake(, , , )];
    v2.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"9.jpg"]];

    [s addSubview:v2];
    [self.view addSubview:p];
}
-(void)pag{
    CGPoint p1 = {[p currentPage]*,};//结构体
    [s setContentOffset:p1 animated:YES];//p->s  page到scroll
}
-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{//s->page
    CGPoint p1 = s.contentOffset;
    int index = p1.x/s.frame.size.width;
    p.currentPage = index;

}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

缩放
#import "ViewController.h"

@interface ViewController ()<UIScrollViewDelegate>{

    UIScrollView *s;
    UIImageView  *i;

}

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    s = [[UIScrollView alloc]initWithFrame:self.view.bounds];
    s.delegate = self;
    s.userInteractionEnabled = YES;//这里不需要交互
    s.minimumZoomScale = ;
    s.maximumZoomScale = ;
    [self.view addSubview:s];
    i = [[UIImageView alloc] initWithFrame:CGRectMake(, , ,)];
    i.image = [UIImage imageNamed:@"4.jpg"];
    [s addSubview:i];
}
//告诉scrollView,是哪个子视图要进行缩放
-(UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{
    return i;
}
-(void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(CGFloat)scale{

}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

手势识别（非自己总结，有待验证）

两个手势(.缩放手势    .拖拽手势)
#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    UIImageView *v = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"4.jpg"]];
    v.frame = self.view.bounds;
    UITapGestureRecognizer *t =[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(image:)];//添加手势
    t.numberOfTapsRequired = ;//点击次数
    t.numberOfTouchesRequired = ;//需要点击的手指个数
    v.tag = ;
    v .userInteractionEnabled = YES;
    [v addGestureRecognizer:t];
//拖动手势
    UIPanGestureRecognizer *p = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(pan:)];//添加拖动手势
    [v addGestureRecognizer:p];
    [self.view addSubview:v];

}
-(void)image:(UITapGestureRecognizer *)ges{
    UIView *vi = ges.view;
    NSLog(@"*****%zi",vi.tag);
}
-(void)pan:(UIPanGestureRecognizer *)pa{
    NSLog(@"%zi",pa.state);//打印拖动时对象所处的状态
    CGPoint point = [pa locationInView:self.view]; //获取拖动手势的开始拖动点的坐标
    pa.view.center = point; //把开始拖动点的坐标赋值给pa所在的图片的中点坐标(因为pa是一个手势,是可变的,所以中心点会跟着手势变,产生拖动效果)
}

边框覆盖法解决UISegmentedControl不能隐藏边框问题//在ScrollVIew上面放置分段控制器

NSArray * topArray = @[@"国内",@"国际",@"时尚",@"明星",@"淘宝",@"天气",@"健康",@"生活",@"历史",@"人文"];
// [[UISegmentedControl appearance] setTitleTextAttributes:@{
// NSForegroundColorAttributeName : [UIColor redColor]
// } forState:UIControlStateNormal];
UISegmentedControl *segmented = [[UISegmentedControl alloc]initWithItems:topArray];
segmented.frame = CGRectMake(0, 5, 70*10, 40);
segmented.tintColor = [UIColor redColor];//边框和选中颜色
[top addSubview:segmented];
[self.view addSubview:top];
NSArray * topArray1 = @[@"",@"",@"",@"",@"",@"",@"",@"",@"",@""];
UISegmentedControl *segmented1 = [[UISegmentedControl alloc]initWithItems:topArray1];
segmented1.frame = CGRectMake(0, 5, 70*10, 40);
[segmented1 setTintColor:[UIColor whiteColor]];//边框和选中颜色
[segmented1 setUserInteractionEnabled:NO];
[top addSubview:segmented1];
[self.view addSubview:top];