[IOS]划屏解锁（重写UIView）

[IOS]划屏解锁（重写UIView）

 

Demo:http://download.csdn.net/detail/u012881779/8667545

1.创建一个继承于UIView的类：PaddleDraw

2.创建一个继承于UIViewController的类ViewController

再往ViewController的Xib中添加控件UIView，设置UIView继承于这个自定义的PaddleDraw

 

#import <UIKit/UIKit.h>@interface PaddleDraw : UIView<UIAlertViewDelegate >@property (strong, nonatomic)NSMutableArray  *pointAdd;     //存储被触摸到的button的中心点@property (strong, nonatomic)NSMutableArray  *centerPoint;  //存储初始化创建的Button中心点@property (strong, nonatomic)NSMutableArray  *buttonArr;    //存储所有Button@property (strong, nonatomic)NSMutableString *strScore;     //第一次设置密码，按触摸顺序@property (strong, nonatomic)NSMutableString *compareScore; //第二次输入密码@property (strong, nonatomic)UIView *topView;               //透明玻璃纸//还原Button状态-(void)cleanButton;@end#import "PaddleDraw.h"@implementation PaddleDraw@synthesize pointAdd = _pointAdd;@synthesize centerPoint = _centerPoint;@synthesize buttonArr = _buttonArr;@synthesize strScore = _strScore;@synthesize compareScore = _compareScore;@synthesize topView = _topView;- (id)initWithFrame:(CGRect)frame{    self = [super initWithFrame:frame];    if (self) {        // Initialization code    }    return self;}//自己写一个构造函数，按照上面函数的格式-(id)initWithCoder:(NSCoder *)aDecoder{    self = [super initWithCoder:aDecoder];    if(self){        //存储Button中心点        _centerPoint = nil;        if(!_centerPoint){            _centerPoint = [[NSMutableArray alloc] init];        }        [_centerPoint removeAllObjects];                //存储所有Button        _buttonArr = nil;        if(!_buttonArr){            _buttonArr = [[NSMutableArray alloc ] init];        }                //定义Button格数        for(int i = 0;i < 20;i ++){            UIButton *screenButton = [[UIButton alloc] init];            [screenButton setFrame:CGRectMake(5+(i%4)*87.6, 100+(i/4)*87.6, 32, 32)];            [screenButton setBackgroundImage:[UIImage imageNamed:@"gray.png"] forState:UIControlStateNormal];            [screenButton setTag:i+1];            CGPoint pointBut = [screenButton center];            [_centerPoint addObject:[NSValue valueWithCGPoint:pointBut]];            [_buttonArr addObject:screenButton];            [self addSubview:screenButton];        }                //放一个透明的View接受响应，避免Button吸收响应        if(!_topView){            _topView = [[UIView alloc] initWithFrame:CGRectMake(0, 20, 320, 568)];            [_topView setBackgroundColor:[UIColor clearColor] ];            [self addSubview:_topView];        }    }      return self;  }// Only override drawRect: if you perform custom drawing.- (void)drawRect:(CGRect)rect {    // Drawing code    if(_pointAdd){        CGContextRef context = UIGraphicsGetCurrentContext();        CGPoint startPoint = [[_pointAdd firstObject] CGPointValue];        CGContextMoveToPoint(context, startPoint.x, startPoint.y);        for(int j = 0;j < [_pointAdd count];j ++){            CGPoint tempArr = [[_pointAdd objectAtIndex:j] CGPointValue];            CGContextAddLineToPoint(context, tempArr.x,tempArr.y);        }                [[UIColor colorWithRed:250/255.0 green:200/255.0 blue:99/255.0 alpha:1] set];        CGContextSetLineWidth(context, 10);        CGContextStrokePath(context);    }}//还原Button状态-(void)cleanButton{    for(UIButton *tempBut in _buttonArr){        [tempBut setBackgroundImage:[UIImage imageNamed:@"gray.png"] forState:UIControlStateNormal ];    }    //密码清空    _strScore = nil;    //刷新，重新显示    [self setNeedsDisplay];}#pragma mark UIResponder//开始触摸- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{    //还原Button的状态    [self cleanButton];}//触摸移动，不断监听一次有效的Touch移动- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{    CGPoint point = [[touches anyObject] locationInView:self];    if(!_pointAdd){   //触摸经过的Button中心        _pointAdd = [[NSMutableArray alloc] init];    }    if(!_strScore){    //密码        _strScore = [[NSMutableString alloc] init];    }    //判断触摸在UI上的点，是否在Button上，    for(int i = 0;i < 5;i ++){        if(point.y > 100+(i%5)*87.6 && point.y < 100+(i%5)*87.6+32){            for(int j = 0;j < 4;j ++){                if(point.x > 10+(j%4)*87.6 && point.x < 10+(j%4)*87.6+32){                    //取得该Button的中心点坐标,传给PointAdd                    NSMutableArray *aaa = _centerPoint;                    NSLog(@"___%@",aaa);                    [_pointAdd addObject:[_centerPoint objectAtIndex:4*i+j]];                    //存储密码，Button连接顺序                    NSString *strTemp = [NSString stringWithFormat:@"%d",4*i+(j+1)];                    NSRange range = [_strScore rangeOfString:strTemp];   //查看当前Button是否已经经过一次，                    if(range.location == NSNotFound){                        [_strScore appendString:strTemp];                    }                    //取得Button，改变其状态                    UIButton *theButton = (UIButton *)[self viewWithTag:4*i+j+1];                    [theButton setBackgroundImage:[UIImage imageNamed:@"yellow.png"] forState:UIControlStateNormal];                    //改变状态后，跳出for循环                    break;                }            }            break;        }    }    [self setNeedsDisplay];}//触摸事件完成- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{    //触摸结束后，清空上次触摸存储到pointAdd中的Button中心坐标数据    [_pointAdd removeAllObjects];    //查看密码,比较第二次输入密码是否相同    if(!_compareScore){        _compareScore = [[NSMutableString alloc] init];    }    if(![_strScore isEqualToString:_compareScore]){        UIAlertView *theAlert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"验证密码" delegate:self cancelButtonTitle:@"再次输入" otherButtonTitles:@"取消", nil, nil];        [theAlert show];    }else{        //成功设置，页面跳转        UIAlertView *theAlert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"验证成功" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil, nil];        [theAlert show];    }}//触摸事件取消，比如来电话打断- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event{    NSLog(@"touchesCancelled");}#pragma mark UIAlertViewDelegate- (void)alertView:(UIAlertView *)alertView willDismissWithButtonIndex:(NSInteger)buttonIndex{    //再次输入    if(buttonIndex == 0){        //查看密码,比较第二次输入密码是否相同        _compareScore = _strScore;        [self cleanButton];    }    //重新输入    if(buttonIndex == 1){        [self cleanButton];    }  }@end 

示图：