登录注册时用的验证码效果图
ViewDidload调用即可
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
_pooCodeView = [[PooCodeView alloc] initWithFrame:CGRectMake(50, 100, 82, 32)]; UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapClick:)]; [_pooCodeView addGestureRecognizer:tap];[self.view addSubview:_pooCodeView];#import <UIKit/UIKit.h>@interface PooCodeView : UIView@property (nonatomic, retain) NSArray *changeArray;@property (nonatomic, retain) NSMutableString *changeString;@property (nonatomic, retain) UILabel *codeLabel;-(void)changeCode;@end#import "PooCodeView.h"@implementation PooCodeView@synthesize changeArray = _changeArray;@synthesize changeString = _changeString;@synthesize codeLabel = _codeLabel;- (id)initWithFrame:(CGRect)frame{ self = [super initWithFrame:frame]; if (self) { // Initialization code// self.layer.cornerRadius = 5.0;// self.layer.masksToBounds = YES; float red = arc4random() % 100 / 100.0; float green = arc4random() % 100 / 100.0; float blue = arc4random() % 100 / 100.0; UIColor *color = [UIColor colorWithRed:red green:green blue:blue alpha:0.2]; self.backgroundColor = color; [self change]; } return self;} //-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event//{// [self change];// [self setNeedsDisplay];//}-(void)changeCode{[self change];[self setNeedsDisplay];} - (void)change { self.changeArray = [[NSArray alloc] initWithObjects:@"0",@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"A",@"B",@"C",@"D",@"E",@"F",@"G",@"H",@"I",@"J",@"K",@"L",@"M",@"N",@"O",@"P",@"Q",@"R",@"S",@"T",@"U",@"V",@"W",@"X",@"Y",@"Z",@"a",@"b",@"c",@"d",@"e",@"f",@"g",@"h",@"i",@"j",@"k",@"l",@"m",@"n",@"o",@"p",@"q",@"r",@"s",@"t",@"u",@"v",@"w",@"x",@"y",@"z",nil]; NSMutableString *getStr = [[NSMutableString alloc] initWithCapacity:5]; self.changeString = [[NSMutableString alloc] initWithCapacity:6]; for(NSInteger i = 0; i < 4; i++) { NSInteger index = arc4random() % ([self.changeArray count] - 1); getStr = [self.changeArray objectAtIndex:index]; self.changeString = (NSMutableString *)[self.changeString stringByAppendingString:getStr]; } } - (void)drawRect:(CGRect)rect {[super drawRect:rect]; float red = arc4random() % 100 / 100.0; float green = arc4random() % 100 / 100.0; float blue = arc4random() % 100 / 100.0; UIColor *color = [UIColor colorWithRed:red green:green blue:blue alpha:0.5]; [self setBackgroundColor:color]; NSString *text = [NSString stringWithFormat:@"%@",self.changeString]; CGSize cSize = [@"S" sizeWithFont:[UIFont systemFontOfSize:20]]; int width = rect.size.width / text.length - cSize.width; int height = rect.size.height - cSize.height; CGPoint point; float pX, pY; for (int i = 0; i < text.length; i++) { pX = arc4random() % width + rect.size.width / text.length * i; pY = arc4random() % height; point = CGPointMake(pX, pY); unichar c = [text characterAtIndex:i]; NSString *textC = [NSString stringWithFormat:@"%C", c]; [textC drawAtPoint:point withFont:[UIFont systemFontOfSize:20]]; } CGContextRef context = UIGraphicsGetCurrentContext(); CGContextSetLineWidth(context, 1.0); for(int cout = 0; cout < 10; cout++) { red = arc4random() % 100 / 100.0; green = arc4random() % 100 / 100.0; blue = arc4random() % 100 / 100.0; color = [UIColor colorWithRed:red green:green blue:blue alpha:0.2]; CGContextSetStrokeColorWithColor(context, [color CGColor]); pX = arc4random() % (int)rect.size.width; pY = arc4random() % (int)rect.size.height; CGContextMoveToPoint(context, pX, pY); pX = arc4random() % (int)rect.size.width; pY = arc4random() % (int)rect.size.height; CGContextAddLineToPoint(context, pX, pY); CGContextStrokePath(context); }}@end |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：http://www.jianshu.com/p/fa2c3fb3dcfb?utm_source=tuicool&utm_medium=referral
