IOS代码库

 1 /* 九宫格计算 */
 2 int totalCol = 5;//指定总列数
 3 
 4 CGFloat viewW = 50;//subview宽度
 5 CGFloat viewH = 50;//subview高度
 6 
 7 CGFloat marginX = (self.view.bounds.size.width-viewW*totalCol)/(totalCol+1);//计算横向空白间隙
 8 CGFloat marginY = marginX;//计算纵向空白间隙（和横向一致）
 9 
10 for (int i = 0; i<self.appList.count; i++) {//遍历plist中的view信息 一次在view中生成appview
11     
12     int col = i%totalCol;//计算appview所在的列
13     int row = i/totalCol;//计算appview所在的行
14     
15     CGFloat x = col*viewW+(col+1)*marginX;//计算appview的横坐标
16     CGFloat y = row*viewH+(row+1)*marginY;//计算appview的纵坐标
17     
18     UIView *appView = [[UIView alloc] initWithFrame:CGRectMake(x, y, viewW, viewH)];
19     appView.backgroundColor = [UIColor redColor];//设置appview
20     
21     [self.view addSubview:appView];//添加到view中
22 }
23 
24 /* 懒加载 */
25 -(NSArray *)appList
26 {
27 if (!appList) {
28     NSString *path = [[NSBundle mainBundle] pathForResource:@"app" ofType:@"plist"];
29     appList = [NSArray arrayWithContentsOfFile:path];//加载plist方法
30     NSLog(@"%@",appList);
31 }
32 return appList;
33 }

疯狂猜图

  1 //刘凡老师的代码
  2 #import "LFViewController.h"
  3 #import "LFQuestion.h"
  4 
  5 #define kButtonWidth    35.0
  6 #define kButtonHeight   35.0
  7 #define kButtonMargin   10.0
  8 #define kTotalColumns   7
  9 
 10 @interface LFViewController ()
 11 
 12 /** 图像按钮视图 */
 13 @property (weak, nonatomic) IBOutlet UIButton *iconView;
 14 @property (weak, nonatomic) IBOutlet UILabel *noLabel;
 15 @property (weak, nonatomic) IBOutlet UILabel *titleLabel;
 16 @property (weak, nonatomic) IBOutlet UIButton *nextButton;
 17 @property (weak, nonatomic) IBOutlet UIButton *scoreButton;
 18 
 19 @property (weak, nonatomic) IBOutlet UIView *answerView;
 20 @property (weak, nonatomic) IBOutlet UIView *optionView;
 21 
 22 /** 遮罩按钮视图 */
 23 @property (nonatomic, strong) UIButton *cover;
 24 
 25 /** 答案索引 */
 26 @property (nonatomic, assign) int index;
 27 /** 答案数组 */
 28 @property (nonatomic, strong) NSArray *questions;
 29 
 30 @end
 31 
 32 @implementation LFViewController
 33 
 34 - (NSArray *)questions
 35 {
 36     if (!_questions) {
 37         _questions = [LFQuestion questions];
 38     }
 39     
 40     return _questions;
 41 }
 42 
 43 - (UIButton *)cover
 44 {
 45     if (!_cover) {
 46         _cover = [[UIButton alloc] init];
 47         _cover.frame = self.view.bounds;
 48         _cover.backgroundColor = [UIColor blackColor];
 49         _cover.alpha = 0.0;
 50         
 51         [self.view addSubview:_cover];
 52         
 53         [_cover addTarget:self action:@selector(bigImage) forControlEvents:UIControlEventTouchUpInside];
 54     }
 55     return _cover;
 56 }
 57 
 58 /** 修改状态栏样式 */
 59 - (UIStatusBarStyle)preferredStatusBarStyle
 60 {
 61     return UIStatusBarStyleLightContent;
 62 }
 63 
 64 - (void)viewDidLoad
 65 {
 66     self.index = -1;
 67     
 68     [self nextQuestion];
 69 }
 70 
 71 /** 设置分数 */
 72 - (void)addScore:(int)score
 73 {
 74     int currentScore = [self.scoreButton.currentTitle intValue];
 75     currentScore += score;
 76     [self.scoreButton setTitle:[NSString stringWithFormat:@"%d", currentScore] forState:UIControlStateNormal];
 77 }
 78 
 79 /** 提示按钮 */
 80 - (IBAction)tips
 81 {
 82     // 清空答案区所有按钮文字
 83     for (UIButton *btn in self.answerView.subviews) {
 84         [self answerClick:btn];
 85     }
 86     
 87     // 设置第一个答案按钮的文字
 88     LFQuestion *q = self.questions[self.index];
 89     NSString *first = [q.answer substringToIndex:1];
 90     
 91     for (UIButton *btn in self.optionView.subviews) {
 92         if ([btn.currentTitle isEqualToString:first]) {
 93             [self optionClick:btn];
 94             
 95             [self addScore:-1000];
 96             break;
 97         }
 98     }
 99 }
100 
101 /** 下一题 */
102 - (IBAction)nextQuestion
103 {
104     // 1. 取出当前答案
105     self.index++;
106     if (self.index == self.questions.count) {
107         NSLog(@"通关！");
108         return;
109     }
110     
111     LFQuestion *question = self.questions[self.index];
112     
113     // 2. 设置界面信息
114     [self setupBasicInfo:question];
115     
116     // 3. 创建答案按钮
117     [self createAnswerButtons:question];
118     
119     // 4. 创建备选按钮
120     [self createOptionButtons:question];
121 }
122 
123 /** 设置基本信息 */
124 - (void)setupBasicInfo:(LFQuestion *)question
125 {
126     self.noLabel.text = [NSString stringWithFormat:@"%d/%d", self.index + 1, self.questions.count];
127     self.titleLabel.text = question.title;
128     [self.iconView setImage:question.image forState:UIControlStateNormal];
129     
130     // 如果是最后一题，禁用下一题按钮
131     self.nextButton.enabled = (self.index < (self.questions.count - 1));
132 }
133 
134 /** 创建答案按钮 */
135 - (void)createAnswerButtons:(LFQuestion *)question
136 {
137     for (UIView *view in self.answerView.subviews) {
138         [view removeFromSuperview];
139     }
140 
141     int length = question.answer.length;
142     
143     CGFloat viewW = self.answerView.bounds.size.width;
144     CGFloat startX = (viewW - length * kButtonWidth - (length - 1) * kButtonMargin) * 0.5;
145     
146     for (int i = 0; i < question.answer.length; i++) {
147         CGFloat x = startX + i * (kButtonWidth + kButtonMargin);
148         UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(x, 0, kButtonWidth, kButtonHeight)];
149         [btn setBackgroundImage:[UIImage imageNamed:@"btn_answer"] forState:UIControlStateNormal];
150         [btn setBackgroundImage:[UIImage imageNamed:@"btn_answer_highlighted"] forState:UIControlStateHighlighted];
151         [btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
152         
153         [self.answerView addSubview:btn];
154         
155         [btn addTarget:self action:@selector(answerClick:) forControlEvents:UIControlEventTouchUpInside];
156     }
157     
158     [self createOptionButtons:question];
159 }
160 
161 /** 创建备选按钮 */
162 - (void)createOptionButtons:(LFQuestion *)question
163 {
164     for (UIView *view in self.optionView.subviews) {
165         [view removeFromSuperview];
166     }
167     
168     int optionLength = question.options.count;
169     
170     CGFloat viewW1 = self.optionView.bounds.size.width;
171     CGFloat startX1 = (viewW1 - kTotalColumns * kButtonWidth - (kTotalColumns - 1) * kButtonMargin) * 0.5;
172     for (int i = 0; i < optionLength; i++) {
173         int row = i / kTotalColumns;
174         int col = i % kTotalColumns;
175         
176         CGFloat x = startX1 + col * (kButtonWidth + kButtonMargin);
177         CGFloat y = row * (kButtonHeight + kButtonMargin);
178         
179         UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(x, y, kButtonWidth, kButtonHeight)];
180         [btn setBackgroundImage:[UIImage imageNamed:@"btn_option"] forState:UIControlStateNormal];
181         [btn setBackgroundImage:[UIImage imageNamed:@"btn_option_highlighted"] forState:UIControlStateHighlighted];
182         [btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
183         
184         [self.optionView addSubview:btn];
185         [btn setTitle:question.options[i] forState:UIControlStateNormal];
186         
187         // 备选按钮点击事件
188         [btn addTarget:self action:@selector(optionClick:) forControlEvents:UIControlEventTouchUpInside];
189     }
190 }
191 
192 
193 /** 点击答案按钮 */
194 - (void)answerClick:(UIButton *)button
195 {
196     if (button.currentTitle.length == 0) return;
197     
198     // 恢复隐藏的备选按钮
199     for (UIButton *btn in self.optionView.subviews) {
200         if ([btn.currentTitle isEqualToString:button.currentTitle] && btn.isHidden == YES) {
201             btn.hidden = NO;
202             
203             break;
204         }
205     }
206     
207     // 清空按钮文字
208     [button setTitle:nil forState:UIControlStateNormal];
209     
210     // 将答案区的所有按钮设置为黑色
211     for (UIButton *btn in self.answerView.subviews) {
212         [btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
213     }
214 }
215 
216 /** 点击备选按钮 */
217 - (void)optionClick:(UIButton *)button
218 {
219     // 1. 隐藏按钮
220     button.hidden = YES;
221     
222     // 2. 将按钮文字设置到答案区
223     // 遍历答案区的按钮，找到第一个文字为空的按钮，并设置其文字
224     for (UIButton *btn in self.answerView.subviews) {
225         if (btn.currentTitle.length == 0) {
226             [btn setTitle:button.currentTitle forState:UIControlStateNormal];
227             break;
228         }
229     }
230     
231     // 3. 判断结果
232     // 1> 判断答案是否填满
233     BOOL isFull = YES;
234     NSMutableString *strM = [NSMutableString string];
235     for (UIButton *btn in self.answerView.subviews) {
236         if (btn.currentTitle.length == 0) {
237             isFull = NO;
238         } else {
239             [strM appendString:btn.currentTitle];
240         }
241     }
242     
243     // 2> 如果答案已经填满
244     if (isFull) {
245         // 比较结果
246         LFQuestion *q = self.questions[self.index];
247         
248         if ([strM isEqualToString:q.answer]) {
249             for (UIButton *btn in self.answerView.subviews) {
250                 [btn setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
251             }
252             
253             [self addScore:800];
254             
255             // 0.5秒钟之后显示下一题
256             [self performSelector:@selector(nextQuestion) withObject:nil afterDelay:0.5];
257         } else {
258             for (UIButton *btn in self.answerView.subviews) {
259                 [btn setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
260             }
261         }
262     }
263 }
264 
265 /** 显示大图 */
266 - (IBAction)bigImage
267 {
268     if (self.cover.alpha == 0.0) {
269         // 2. 将图像按钮移动到最前面
270         [self.view bringSubviewToFront:self.iconView];
271         
272         // 3. 放大显示图像
273         // 3.1 计算目标位置
274         CGFloat viewW = self.view.bounds.size.width;
275         CGFloat viewH = viewW;
276         CGFloat viewY = (self.view.bounds.size.height - viewH) * 0.5;
277         
278         [UIView animateWithDuration:1.0f animations:^{
279             self.cover.alpha = 0.5;
280             self.iconView.frame = CGRectMake(0, viewY, viewW, viewH);
281         }];
282     } else {
283         [UIView animateWithDuration:0.5f animations:^{
284             self.cover.alpha = 0.0;
285             self.iconView.frame = CGRectMake(85, 90, 150, 150);
286         }];
287     }
288 }
289 
290 @end

1 //计算页码
2 -(void)scrollViewDidScroll:(UIScrollView *)scrollView
3 {
4     self.pageControl.currentPage = (scrollView.contentOffset.x + (scrollView.frame.size.width)/2)/(　　　　scrollView.frame.size.width);
5     NSLog(@"scrollViewDidScroll");
6 
7 }//（偏移量 + scrollView宽度的一半）/scrollView宽度 理解也很好理解，偏移量达到宽度一半时候 页码为1，达不到页码为0 牛啊！

 1 -(void)nextImage
 2 {
 3     if (4 == self.pageControl.currentPage) {
 4         self.pageControl.currentPage = 0;
 5     }else{
 6         self.pageControl.currentPage++;
 7     }
 8     self.scrollView.contentOffset = CGPointMake(self.pageControl.currentPage * self.scrollView.frame.size.width, 0);
 9 }//自动切换图片，bug是当前页直接加1，当前页小点移动，然后滚动，滚动过程中，页码又自己设置了，小点回去，又回来，滚动较快，这个bug看不出来
10 
11 解决方案：
12 -(void)nextImage
13 {
14     int page = self.pageControl.currentPage;
15     if (4 == page) {
16         page = 0;
17     }else{
18         page++;
19     }
20     self.scrollView.contentOffset = CGPointMake(page * self.scrollView.frame.size.width, 0);
21 }//获得页码仅用于计算偏移量，不对页码进行修改，页码的计算还是在滚动过程中自己计算

飘雪花刷帧代码

有个疑问这里，定义在方法中的静态变量自加循环调用这个方法，刚开始的定义语句为什么不会重新赋值呢？

 1 - (void)drawRect:(CGRect)rect
 2 {
 3     CGContextRef cxt = UIGraphicsGetCurrentContext();
 4     CGContextClearRect(cxt, rect);
 5     static float imageY = 1;//为什么这个值不会重新赋值呢？//重复调用这个方法，静态变量不会重复定义，也不会再赋值！//用static修饰局部变量，只创建一次
 6     // Drawing code
 7     UIImage *image = [UIImage imageNamed:@"snow"];
 8     if (imageY > self.bounds.size.height) {
 9         imageY = 1;
10     }
11     [image drawAtPoint:CGPointMake(0, imageY = imageY + 1)];
12   //  [image drawAsPatternInRect:rect];
13 }

View跟着手指移动代码

 1 - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
 2 {
 3 //    UITouch *touch = [touches anyObject];
 4 //    CGPoint point = [touch locationInView:self.superview];
 5 //    NSLog(@"touchesMoved%@",NSStringFromCGPoint(point));
 6     //获取UItouch
 7     UITouch *touch = [touches anyObject];
 8     
 9     //获取到上一次的点
10     CGPoint prePoint = [touch previousLocationInView:self];
11     //获取当前点
12     CGPoint currentPoint = [touch locationInView:self];//这里用父视图也行，为毛我的不行呢？
13     //计算差值
14     CGFloat moveX = currentPoint.x - prePoint.y;
15     CGFloat moveY = currentPoint.y - prePoint.y;
16     //根据差值，移动View
17     CGPoint temp = self.center;
18     temp.x += moveX;
19     temp.y += moveY;
20     self.center = temp;//代码有问题！！！
21 }

画画板中画线段的方法

 1 //
 2 //  HuaBan.m
 3 //  画画板
 4 //
 5 //  Created by dongwenbo on 14-8-7.
 6 //  Copyright (c) 2014年 dongwenbo. All rights reserved.
 7 //
 8 
 9 #import "HuaBan.h"
10 @interface HuaBan ()
11 @property(strong,nonatomic)NSMutableArray *totalPoints;
12 @end
13 
14 @implementation HuaBan
15 @synthesize totalPoints = _totalPoints;
16 
17 -(NSMutableArray *)touchPoints
18 {
19     if (!_totalPoints) {
20         _totalPoints = [NSMutableArray array];
21     }
22     return _totalPoints;
23 }
24 
25 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
26 {
27     UITouch *touch = [touches anyObject];
28     //存储开始点到小数组中
29     CGPoint startPoint = [touch locationInView:self];
30     NSMutableArray *subPoints = [NSMutableArray array];
31     [subPoints addObject:[NSValue valueWithCGPoint:startPoint]];
32     //把小数组存储到大数组中
33     [self.touchPoints addObject:subPoints];
34 //    [self setNeedsDisplay];
35 }
36 - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
37 {
38     UITouch *touch = [touches anyObject];
39     //存储正在移动中的点到小数组中
40     CGPoint movingPoint = [touch locationInView:self];
41     [[self.totalPoints lastObject] addObject:[NSValue valueWithCGPoint:movingPoint]];
42     [self setNeedsDisplay];
43 }
44 - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
45 {
46     
47 }
48 - (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
49 {
50     
51 }
52 
53 -(void)drawRect:(CGRect)rect
54 {
55     //拿到图形上下文
56     CGContextRef ctx = UIGraphicsGetCurrentContext();
57     for (NSMutableArray *currentPoints in self.totalPoints) {
58         for (int index = 0; index < currentPoints.count; index++) {
59             CGPoint point = [[currentPoints objectAtIndex:index] CGPointValue];
60             if (0 == index) {
61             //绘制起点
62                 CGContextMoveToPoint(ctx, point.x, point.y);
63             }else{
64             //绘制终点
65                 CGContextAddLineToPoint(ctx, point.x, point.y);
66         }
67     }
68 }
69     //渲染
70     CGContextStrokePath(ctx);
71 }
72 @end

不用小数组，而用路径

  1 //
  2 //  HuaBan.m
  3 //  画画板
  4 //
  5 //  Created by dongwenbo on 14-8-7.
  6 //  Copyright (c) 2014年 dongwenbo. All rights reserved.
  7 //
  8 
  9 #import "HuaBan.h"
 10 @interface HuaBan ()
 11 @property(strong,nonatomic)NSMutableArray *totalPoints;
 12 @end
 13 
 14 @implementation HuaBan
 15 @synthesize totalPoints = _totalPoints;
 16 
 17 -(void)clearView
 18 {
 19     //清空数组
 20     [self.totalPoints removeAllObjects];
 21     [self setNeedsDisplay];
 22 }
 23 -(void)backView
 24 {
 25     //移除最后一个数组
 26     [self.totalPoints removeLastObject];
 27     [self setNeedsDisplay];
 28 }
 29 -(void)saveView
 30 {
 31     /*
 32     UIImageWriteToSavedPhotosAlbum(<#UIImage *image#>, <#id completionTarget#>, <#SEL completionSelector#>, <#void *contextInfo#>)
 33      */
 34 }
 35 
 36 -(NSMutableArray *)totalPoints
 37 {
 38     if (!_totalPoints) {
 39         _totalPoints = [NSMutableArray array];
 40     }
 41     return _totalPoints;
 42 }
 43 
 44 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
 45 {
 46     
 47     UITouch *touch = [touches anyObject];
 48     //存储开始点到小数组中
 49     CGPoint startPoint = [touch locationInView:self];
 50    /* NSMutableArray *subPoints = [NSMutableArray array];
 51     [subPoints addObject:[NSValue valueWithCGPoint:startPoint]];
 52     //把小数组存储到大数组中
 53     [self.totalPoints addObject:subPoints];
 54 //    [self setNeedsDisplay];*/
 55     
 56     UIBezierPath *path = [UIBezierPath bezierPath];
 57     [path moveToPoint:startPoint];
 58     [self.totalPoints addObject:path];
 59 }
 60 - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
 61 {
 62    
 63     UITouch *touch = [touches anyObject];
 64     //存储正在移动中的点到小数组中
 65     CGPoint movingPoint = [touch locationInView:self];
 66     /* [[self.totalPoints lastObject] addObject:[NSValue valueWithCGPoint:movingPoint]];
 67     [self setNeedsDisplay];
 68     */
 69     UIBezierPath *path = [self.totalPoints lastObject];
 70     [path addLineToPoint:movingPoint];
 71     [self setNeedsDisplay];
 72 }
 73 - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
 74 {
 75     
 76 }
 77 - (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
 78 {
 79     
 80 }
 81 
 82 -(void)drawRect:(CGRect)rect
 83 {
 84     /*
 85     //拿到图形上下文
 86     CGContextRef ctx = UIGraphicsGetCurrentContext();
 87     for (NSMutableArray *currentPoints in self.totalPoints) {
 88         for (int index = 0; index < currentPoints.count; index++) {
 89             CGPoint point = [[currentPoints objectAtIndex:index] CGPointValue];
 90             if (0 == index) {
 91             //绘制起点
 92                 CGContextMoveToPoint(ctx, point.x, point.y);
 93             }else{
 94             //绘制终点
 95                 CGContextAddLineToPoint(ctx, point.x, point.y);
 96         }
 97     }
 98 }
 99     //渲染
100     CGContextStrokePath(ctx);
101     */
102     for (UIBezierPath *path in self.totalPoints) {
103         [path stroke];
104     }
105 }
106 @end

手势解锁实现

  1 //
  2 //  LockView.m
  3 //  手势解锁
  4 //
  5 //  Created by dongwenbo on 14-8-7.
  6 //  Copyright (c) 2014年 dongwenbo. All rights reserved.
  7 //
  8 
  9 #import "LockView.h"
 10 @interface LockView ()
 11 //可变数组，存储按钮
 12 @property(strong,nonatomic)NSMutableArray *btns;
 13 //当前点
 14 @property(assign,nonatomic)CGPoint current;
 15 
 16 @end
 17 @implementation LockView
 18 @synthesize btns = _btns;
 19 @synthesize current = _current;
 20 //懒加载按钮
 21 -(NSMutableArray *)btns
 22 {
 23     if (!_btns) {
 24         _btns = [NSMutableArray array];
 25     }
 26     return _btns;
 27 }
 28 
 29 - (id)initWithFrame:(CGRect)frame
 30 {
 31     self = [super initWithFrame:frame];
 32     if (self) {
 33         // Initialization code
 34         [self setup];
 35     }
 36     return self;
 37 }
 38 
 39 - (id)initWithCoder:(NSCoder *)aDecoder
 40 {
 41     if (self = [super initWithCoder:aDecoder]) {
 42         [self setup];
 43     }
 44     return self;
 45 }
 46 //创建按钮 并把按钮加到数组中，同时设置按钮的tag
 47 -(void)setup
 48 {
 49     for (int i = 0; i < 9; i++) {
 50         UIButton *btn = [UIButton buttonWithType:(UIButtonTypeCustom)];
 51         [btn setBackgroundImage:[UIImage imageNamed:@"gesture_node_normal"] forState:(UIControlStateNormal)];
 52         [btn setBackgroundImage:[UIImage imageNamed:@"gesture_node_highlighted"] forState:(UIControlStateSelected)];
 53         [self addSubview:btn];
 54        // btn.backgroundColor = [UIColor redColor];
 55         btn.userInteractionEnabled = NO;
 56         btn.tag = i;
 57     }
 58 }
 59 //获取第一次点击的按钮，并判断点击的点是否在按钮中，是就把按钮选中状态设置为YES 同时判断是不是已经是YES了，同时把按钮加入到数组中
 60 -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
 61 {
 62     UITouch *touch = [touches anyObject];
 63     CGPoint startPoint = [touch locationInView:self];
 64     for (UIButton *btn in self.subviews) {
 65         if (CGRectContainsPoint(btn.frame, startPoint)&& btn.selected != YES) {
 66             btn.selected = YES;
 67             [self.btns addObject:btn];
 68         }
 69     }
 70 }
 71 //获取到移动中的点，并把它赋值给属性，刷界面，判断是否在按钮中，是就点亮按钮，并把按钮加入到数组中
 72 -(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
 73 {
 74     UITouch *touch = [touches anyObject];
 75     CGPoint movingPoint = [touch locationInView:self];
 76     self.current = movingPoint;
 77     [self setNeedsDisplay];
 78     for (UIButton *btn in self.subviews) {
 79         if (CGRectContainsPoint(btn.frame, movingPoint)&& btn.selected != YES) {
 80             btn.selected = YES;
 81             [self.btns addObject:btn];
 82             [self setNeedsDisplay];
 83         }
 84     }
 85 }
 86 //记录密码，清空数组
 87 -(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
 88 {
 89 //    for (UIButton *btn in self.subviews) {
 90 //        btn.selected = NO;
 91 //    }
 92     NSMutableString *strM = [NSMutableString string];
 93     for (UIButton *btn in self.btns) {
 94         [strM appendFormat:@"%d",btn.tag];
 95     }
 96     if ([self.delegate respondsToSelector:@selector(lockViewDidClick:andPwd:)]) {
 97         [self.delegate lockViewDidClick:self andPwd:strM];
 98     }
 99     NSLog(@"%@",strM);
100     [self.btns makeObjectsPerformSelector:@selector(setSelected:) withObject:@(NO)];
101     [self.btns removeAllObjects];
102     [self setNeedsDisplay];
103 }
104 //化界面
105 -(void)drawRect:(CGRect)rect
106 {
107     CGContextRef ctx = UIGraphicsGetCurrentContext();
108     CGContextClearRect(ctx, rect);
109     for (int i = 0; i < self.btns.count; i++) {
110         UIButton *btn = [self.btns objectAtIndex:i];
111         CGFloat x = btn.center.x;
112         CGFloat y = btn.center.y;
113         if (0 == i) {
114             CGContextMoveToPoint(ctx, x, y);
115         }else{
116             CGContextAddLineToPoint(ctx, x, y);
117         }
118     }
119     [[UIColor redColor] set];
120     CGContextSetLineCap(ctx,kCGLineCapRound);
121     CGContextSetLineJoin(ctx, kCGLineCapRound);
122     CGContextSetLineWidth(ctx, 10);
123     CGContextAddLineToPoint(ctx, self.current.x, self.current.y);
124     CGContextStrokePath(ctx);
125 }
126 //计算按钮位置
127 -(void)layoutSubviews
128 {
129     [super layoutSubviews];
130     for (int i = 0; i < self.subviews.count; i++) {
131         int col = i % 3;//列
132         int row = i / 3;//行
133         CGFloat padding = 16.33;
134         UIButton *btn = [self.subviews objectAtIndex:i];
135         CGFloat btnW = 74;
136         CGFloat btnH = 74;
137         CGFloat btnX = padding + col * (padding * 2 + btnW);
138         CGFloat btnY = padding + row * (padding * 2 + btnH);
139         btn.frame = CGRectMake(btnX, btnY, btnW, btnH);
140     }
141 }
142 
143 @end

代理的搞法

 1 //
 2 //  LockView.h
 3 //  手势解锁
 4 //
 5 //  Created by dongwenbo on 14-8-7.
 6 //  Copyright (c) 2014年 dongwenbo. All rights reserved.
 7 //
 8 
 9 #import <UIKit/UIKit.h>
10 
11 @class LockView;
12 @protocol LockViewDelegate <NSObject>
13 
14 -(void)lockViewDidClick:(LockView *)lockView andPwd:(NSString *)pwd;
15 
16 @end
17 @interface LockView : UIView
18 @property(weak,nonatomic)id<LockViewDelegate> delegate;
19 @end

 1 //
 2 //  ViewController.m
 3 //  手势解锁
 4 //
 5 //  Created by dongwenbo on 14-8-7.
 6 //  Copyright (c) 2014年 dongwenbo. All rights reserved.
 7 //
 8 
 9 #import "ViewController.h"
10 #import "LockView.h"
11 @interface ViewController ()<LockViewDelegate>
12 @property (weak, nonatomic) IBOutlet LockView *lockView;
13 
14 @end
15 
16 @implementation ViewController
17 @synthesize lockView;
18 
19 -(void)lockViewDidClick:(LockView *)lockView andPwd:(NSString *)pwd
20 {
21     if ([pwd isEqualToString:@"012345678"]) {
22         NSLog(@"解锁成功！");
23     }
24 }
25 
26 - (void)viewDidLoad
27 {
28     [super viewDidLoad];
29     // Do any additional setup after loading the view, typically from a nib.
30     self.lockView.delegate = self;
31 }
32 
33 - (void)viewDidUnload
34 {
35     [self setLockView:nil];
36     [super viewDidUnload];
37     // Release any retained subviews of the main view.
38 }
39 
40 - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
41 {
42     return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
43 }
44 
45 @end

图标抖动

 1 #import "ViewController.h"
 2 
 3 @interface ViewController ()
 4 @property (strong, nonatomic) IBOutlet UIView *imageView;
 5 
 6 @end
 7 
 8 @implementation ViewController
 9 @synthesize imageView;
10 
11 -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
12 {
13     CAKeyframeAnimation *anima = [CAKeyframeAnimation animation];
14     anima.keyPath = @"transform.rotation";
15     anima.values = @[@(0),@(-0.134),@(0),@(0.134),@(0)];
16     anima.removedOnCompletion = NO;
17     anima.fillMode = kCAFillModeForwards;
18     anima.duration = .3;
19     anima.repeatCount = MAXFLOAT;
20     [self.imageView.layer addAnimation:anima forKey:nil];
21 }
22 @end

转场动画

 1 //
 2 //  ViewController.m
 3 //  转场动画
 4 //
 5 //  Created by dongwenbo on 14-8-8.
 6 //  Copyright (c) 2014年 dongwenbo. All rights reserved.
 7 //
 8 
 9 #import "ViewController.h"
10 
11 @interface ViewController ()
12 @property (weak, nonatomic) IBOutlet UIImageView *imageView;
13 @property (assign,nonatomic) int index;
14 @property (weak, nonatomic) IBOutlet UIButton *preBtn;
15 @property (weak, nonatomic) IBOutlet UIButton *nextBtn;
16 
17 - (IBAction)pre:(id)sender;
18 
19 - (IBAction)next:(id)sender;
20 @end
21 
22 @implementation ViewController
23 @synthesize imageView;
24 @synthesize index;
25 @synthesize preBtn;
26 @synthesize nextBtn;
27 - (IBAction)pre:(id)sender {
28     index --;
29     self.preBtn.enabled = (index != 1);//根据索引判断按钮可不可用
30     self.nextBtn.enabled = YES;//如果点击了向前的按钮，那么向后的按钮一定可用
31     UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:@"%d.jpg",index]];
32     self.imageView.image = image;
33     /* The name of the transition. Current legal transition types include
34      * `fade', `moveIn', `push' and `reveal'. Defaults to `fade'. */
35     CATransition *ca = [CATransition animation];
36  //   ca.type = @"cube";
37     ca.type = @"rippleEffect";
38     ca.duration = 2;
39     [self.imageView.layer addAnimation:ca forKey:nil];
40 }
41 
42 - (IBAction)next:(id)sender {
43     index ++;
44     self.nextBtn.enabled = (index != 7);//根据索引判断按钮可不了用
45     self.preBtn.enabled = YES;//如果点击了向后的按钮，那么向前的按钮一定可用
46     UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:@"%d.jpg",index]];
47     self.imageView.image = image;
48     
49     CATransition *ca = [CATransition animation];
50        ca.type = @"cube";
51     /* An optional subtype for the transition. E.g. used to specify the
52      * transition direction for motion-based transitions, in which case
53      * the legal values are `fromLeft', `fromRight', `fromTop' and
54      * `fromBottom'. */
55     ca.subtype = @"fromRight";
56     ca.startProgress = .3;//动画起点
57     ca.endProgress = .7;//动画结束点 实际上就是把整个动画给截成.3-.7之间了
58    // ca.type = @"rippleEffect";
59     ca.duration = 1;
60     [self.imageView.layer addAnimation:ca forKey:nil];
61 }
62 -(void)viewDidLoad
63 {
64     self.index = 1;//初始索引为1
65     self.preBtn.enabled = NO;//默认不可用
66 }
67 
68 - (void)viewDidUnload {
69     [self setPreBtn:nil];
70     [self setNextBtn:nil];
71     [super viewDidUnload];
72 }
73 @end

组动画

 1 //
 2 //  ViewController.m
 3 //  组动画
 4 //
 5 //  Created by dongwenbo on 14-8-8.
 6 //  Copyright (c) 2014年 dongwenbo. All rights reserved.
 7 //
 8 
 9 #import "ViewController.h"
10 
11 @interface ViewController ()
12 @property (weak, nonatomic) IBOutlet UIView *iconView;
13 
14 @end
15 
16 @implementation ViewController
17 @synthesize iconView;
18 
19 -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
20 {
21     CABasicAnimation *a1 = [CABasicAnimation animation];
22     a1.keyPath = @"transform.translation.y";
23     a1.toValue = @(200);
24     
25     CABasicAnimation *a2 = [CABasicAnimation animation];
26     a2.keyPath = @"transform.scale";
27     a2.toValue = @(0.0);
28     
29     CABasicAnimation *a3 = [CABasicAnimation animation];
30     a3.keyPath = @"transform.rotation";
31     a3.toValue = @(M_PI_2);
32     
33     CAAnimationGroup *groupAnima = [CAAnimationGroup animation];
34     groupAnima.animations = @[a1,a2,a3];
35     groupAnima.removedOnCompletion = NO;
36     groupAnima.fillMode = kCAFillModeForwards;
37     groupAnima.duration = 10;
38     [self.iconView.layer addAnimation:groupAnima forKey:nil];
39 }
40 
41 @end

UIView封装动画

1 [UIView transitionWithView:self.iconView duration:2 options:0 animations:^{
2         [UIView setAnimationTransition:(UIViewAnimationTransitionCurlUp) forView:self.iconView cache:YES];
3     } completion:^(BOOL finished) {
4         
5     }];

线程中通信

 1 -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
 2 {
 3     [self performSelectorInBackground:@selector(download) withObject:nil];
 4 }
 5 
 6 -(void)download
 7 {
 8     NSURL *url = [NSURL URLWithString:@"http://images.apple.com/cn/iphone/home/images/ilife_hero.jpg"];
 9     NSData *data = [NSData dataWithContentsOfURL:url];
10     UIImage *image = [UIImage imageWithData:data];
11     //因为 imageView没有加锁，在子线程中访问是不安全的，只能在主线程一个线程中访问
12 //    [self.imageView performSelectorOnMainThread:@selector(setImage:) withObject:image waitUntilDone:NO];
13     [self.imageView performSelector:@selector(setImage:) onThread:[NSThread mainThread] withObject:image waitUntilDone:NO];
14     //self.imageView.image = image;
15 }

GCD 1

 1 //获取全局的并发队列
 2     dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
 3     //异步方法 添加队列，任务
 4     dispatch_async(queue, ^{
 5         NSLog(@"____1 %@",[NSThread currentThread]);
 6     });
 7     dispatch_async(queue, ^{
 8         NSLog(@"____2 %@",[NSThread currentThread]);
 9     });
10     dispatch_async(queue, ^{
11         NSLog(@"____3 %@",[NSThread currentThread]);
12     });

 1 //自己创建串行队列
 2     dispatch_queue_t queue = dispatch_queue_create("com.dong.queue", NULL);
 3     //异步方法 添加串行队列 任务
 4     dispatch_async(queue, ^{
 5         NSLog(@"____1 %@",[NSThread currentThread]);
 6     });
 7     dispatch_async(queue, ^{
 8         NSLog(@"____2 %@",[NSThread currentThread]);
 9     });
10     dispatch_async(queue, ^{
11         NSLog(@"____3 %@",[NSThread currentThread]);
12     });

总结共四种情况

情况说明：

同步：不开线程，在当前线程中执行　　异步：开新线程

并发队列：可以并发执行　　串行队列：不可以并发，只能一个一个

同步+并发：并发无意义

同步+串行：一个一个

异步+并发：开新线程（N），并发执行

异步+串行：开新线程（1），串行任务在新线程中一个一个执行

同步+串行（主队列）：放在主线程队列中挨个执行//可能会造成死锁，在主线程中往主线程队列中添加任务，造成死锁

异步+串行（主队列）：放在主线程队列中挨个执行，不开新线程//不会造成死锁

 1 /**
 2  * 使用dispatch_async异步函数, 在主线程中往主队列中添加任务
 3  */
 4 - (void)asyncMainQueue
 5 {
 6     // 1.获得主队列
 7     dispatch_queue_t queue = dispatch_get_main_queue();
 8     
 9     // 2.添加任务到队列中 执行
10     dispatch_async(queue, ^{
11         NSLog(@"----下载图片1-----%@", [NSThread currentThread]);
12     });
13 }
14 
15 /**
16  * 使用dispatch_sync同步函数, 在主线程中往主队列中添加任务 : 任务无法往下执行
17  */
18 - (void)syncMainQueue
19 {
20     // 1.获得主队列
21     dispatch_queue_t queue = dispatch_get_main_queue();
22     
23     // 2.添加任务到队列中 执行
24     dispatch_sync(queue, ^{
25         NSLog(@"----下载图片1-----%@", [NSThread currentThread]);
26     });
27 //    dispatch_sync(queue, ^{
28 //        NSLog(@"----下载图片2-----%@", [NSThread currentThread]);
29 //    });
30 //    dispatch_sync(queue, ^{
31 //        NSLog(@"----下载图片3-----%@", [NSThread currentThread]);
32 //    });
33     
34     // 不会开启新的线程, 所有任务在主线程中执行
35 }

使用异步+并发下载图片

 1 dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
 2     dispatch_async(queue, ^{
 3         NSLog(@"--download--%@", [NSThread currentThread]);
 4         // 下载图片
 5         NSURL *url = [NSURL URLWithString:@"http://news.baidu.com/z/resource/r/image/2014-06-22/2a1009253cf9fc7c97893a4f0fe3a7b1.jpg"];
 6         NSData *data = [NSData dataWithContentsOfURL:url]; // 这行会比较耗时
 7         UIImage *image = [UIImage imageWithData:data];
 8         
 9         // 回到主线程显示图片
10         dispatch_async(dispatch_get_main_queue(), ^{
11             NSLog(@"--imageView--%@", [NSThread currentThread]);
12             self.imageView.image = image;
13         });
14     });

	全局并发队列	手动创建串行队列	主队列
同步（sync）	p没有开启新线程 p串行执行任务	p没有开启新线程 p串行执行任务	p没有开启新线程 p串行执行任务（可能会死锁）
异步（async）	p有开启新线程 p并发执行任务	p有开启新线程 p串行执行任务	p没有开启新线程 p串行执行任务

组的用法

同时下载两个图片两个都下载完毕后回到主线程显示图片

 1     // 创建一个组
 2     dispatch_group_t group = dispatch_group_create();
 3     
 4     // 开启一个任务下载图片1
 5     __block UIImage *image1 = nil;
 6     dispatch_group_async(group, global_queue, ^{
 7         image1 = [self imageWithURL:@"http://news.baidu.com/z/resource/r/image/2014-06-22/2a1009253cf9fc7c97893a4f0fe3a7b1.jpg"];
 8     });
 9     
10     // 开启一个任务下载图片2
11     __block UIImage *image2 = nil;
12     dispatch_group_async(group, global_queue, ^{
13         image2 = [self imageWithURL:@"http://news.baidu.com/z/resource/r/image/2014-06-22/b2a9cfc88b7a56cfa59b8d09208fa1fb.jpg"];
14     });
15     
16     // 同时执行下载图片1下载图片2操作
17     
18     // 等group中的所有任务都执行完毕, 再回到主线程执行其他操作
19     dispatch_group_notify(group, main_queue, ^{
20         self.imageView1.image = image1;
21         self.imageView2.image = image2;
22         
23         // 合并
24         UIGraphicsBeginImageContextWithOptions(CGSizeMake(200, 100), NO, 0.0);
25         [image1 drawInRect:CGRectMake(0, 0, 100, 100)];
26         [image2 drawInRect:CGRectMake(100, 0, 100, 100)];
27         self.bigImageView.image = UIGraphicsGetImageFromCurrentImageContext();
28         // 关闭上下文
29         UIGraphicsEndImageContext();
30     });

单例模式宏定义（可以判断ARC和非ARC）

 1 // ## : 连接字符串和参数
 2 #define singleton_h(name) + (instancetype)shared##name;
 3 
 4 #if __has_feature(objc_arc) // ARC
 5 
 6 #define singleton_m(name) 
 7 static id _instance; 
 8 + (id)allocWithZone:(struct _NSZone *)zone 
 9 { 
10     static dispatch_once_t onceToken; 
11     dispatch_once(&onceToken, ^{ 
12         _instance = [super allocWithZone:zone]; 
13     }); 
14     return _instance; 
15 } 
16  
17 + (instancetype)shared##name 
18 { 
19     static dispatch_once_t onceToken; 
20     dispatch_once(&onceToken, ^{ 
21         _instance = [[self alloc] init]; 
22     })
23     return _instance; 
24 } 
25 + (id)copyWithZone:(struct _NSZone *)zone 
26 { 
27     return _instance; 
28 }
29 
30 #else // 非ARC
31 
32 #define singleton_m(name) 
33 static id _instance; 
34 + (id)allocWithZone:(struct _NSZone *)zone 
35 { 
36 static dispatch_once_t onceToken; 
37 dispatch_once(&onceToken, ^{ 
38 _instance = [super allocWithZone:zone]; 
39 }); 
40 return _instance; 
41 } 
42 
43 + (instancetype)shared##name 
44 { 
45 static dispatch_once_t onceToken; 
46 dispatch_once(&onceToken, ^{ 
47 _instance = [[self alloc] init]; 
48 }); 
49 return _instance; 
50 } 
51 
52 - (oneway void)release 
53 { 
54 
55 } 
56 
57 - (id)autorelease 
58 { 
59 return _instance; 
60 } 
61 
62 - (id)retain 
63 { 
64 return _instance; 
65 } 
66 
67 - (NSUInteger)retainCount 
68 { 
69 return 1; 
70 } 
71 
72 + (id)copyWithZone:(struct _NSZone *)zone 
73 { 
74 return _instance; 
75 }
76 
77 #endif

登陆服务器+解析Json

 1 //
 2 //  ViewController.m
 3 //  Get请求
 4 //
 5 //  Created by dongwenbo on 14-8-10.
 6 //  Copyright (c) 2014年 dongwenbo. All rights reserved.
 7 //
 8 
 9 #import "ViewController.h"
10 #import "MBProgressHUD/MBProgressHUD+MJ.h"
11 @interface ViewController ()
12 @property (weak, nonatomic) IBOutlet UITextField *userName;
13 @property (weak, nonatomic) IBOutlet UITextField *pwd;
14 - (IBAction)login:(id)sender;
15 
16 @end
17 
18 @implementation ViewController
19 @synthesize userName;
20 @synthesize pwd;
21 
22 - (void)viewDidLoad
23 {
24     [super viewDidLoad];
25     // Do any additional setup after loading the view, typically from a nib.
26 }
27 
28 - (void)viewDidUnload
29 {
30     [self setUserName:nil];
31     [self setPwd:nil];
32     [super viewDidUnload];
33     // Release any retained subviews of the main view.
34 }
35 
36 - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
37 {
38     return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
39 }
40 
41 - (IBAction)login:(id)sender {
42     NSString *name = self.userName.text;
43     if (name.length == 0) {
44         [MBProgressHUD showError:@"请输入用户名"];
45         return;
46     }
47     
48     NSString *pwdstr = self.pwd.text;
49     if (pwdstr.length == 0) {
50         [MBProgressHUD showError:@"请输入密码"];
51         return;
52     }
53     
54     [MBProgressHUD showMessage:@"正在登陆。。。"];
55     
56     NSString *urlStr = [NSString stringWithFormat:@"http://192.168.1.100:8080/MJServer/login?username=%@&pwd=%@",name,pwdstr];
57     NSURL *url = [NSURL URLWithString:urlStr];
58     
59     NSURLRequest *request = [NSURLRequest requestWithURL:url];
60 //    NSURLConnection *conn = [NSURLConnection connectionWithRequest:request delegate:nil];
61 //    [conn start];
62  //   [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
63     NSOperationQueue *queue = [NSOperationQueue mainQueue];
64     [NSURLConnection sendAsynchronousRequest:request queue:queue completionHandler:^(NSURLResponse *request, NSData *data, NSError *error) {//在子线程中发请求，在主线程中刷新UI
65         NSLog(@"%d",data.length);
66         NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:(NSJSONReadingMutableLeaves) error:nil];
67         NSString *error1 = [dict objectForKey:@"error"];
68         if(error1){
69             [MBProgressHUD hideHUD];
70             [MBProgressHUD showError:error1];
71         }else
72         {
73             [MBProgressHUD hideHUD];
74             NSString *success = [dict objectForKey:@"success"];
75             [MBProgressHUD showSuccess:success];
76         }
77         NSLog(@"%@",dict);
78     }];
79     NSLog(@"因为是异步");
80 }
81 @end

解析XML和JSON

 1 DOM
 2 -(NSArray *)DOMparseXMLData:(NSData *)data
 3 {
 4     GDataXMLDocument *doc = [[GDataXMLDocument alloc] initWithData:data options:0 error:nil];
 5     GDataXMLElement *root = doc.rootElement;
 6     NSArray *elements = [root elementsForName:@"video"];
 7     NSMutableArray *arrM = [[NSMutableArray alloc] init];
 8     for (GDataXMLElement *ele in elements) {
 9         Video *video = [[Video alloc] init];
10         video.ID = [ele attributeForName:@"id"].stringValue.intValue;
11         video.name = [ele attributeForName:@"name"].stringValue;
12         video.url = [ele attributeForName:@"url"].stringValue;
13         video.length = [ele attributeForName:@"length"].stringValue.intValue;
14         video.image = [ele attributeForName:@"image"].stringValue;
15         [arrM addObject:video];
16     }
17     return arrM;
18 }

 1 JSON
 2 -(NSArray *)parseJSONdata:(NSData *)data
 3 {
 4     NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:(NSJSONReadingMutableLeaves) error:nil];
 5     NSArray *array = [dict objectForKey:@"videos"];
 6     NSMutableArray *arrM = [NSMutableArray arrayWithCapacity:array.count];
 7         for (NSDictionary *dict in array) {
 8          Video *video = [Video videoWithDict:dict];
 9           [arrM addObject:video];
10           }
11          self.videos = [arrM mutableCopy];
12     return self.videos;
13 }

1 SAX代理
2 -(NSArray *)parseXMLData:(NSData *)data
3 {
4     NSXMLParser *parser = [[NSXMLParser alloc] initWithData:data];
5     parser.delegate = self;
6     [parser parse];
7     return self.videos;
8 }