一：实现自定义view，在.h,.m文件中代码如下:
#import <UIKit/UIKit.h> @class ZLLockView; @protocol ZLLockViewDelegate <NSObject> - (void)lockView:(ZLLockView *)lockView didSelectedPwd: (NSString *)pwd; @end @interface ZLLockView : UIView @property (nonatomic, weak) id<ZLLockViewDelegate> delegate;@end
// // ZLLockView.m // 手势解锁demo实现 // // Created by Mac on 16/1/9. // Copyright © 2016年 Mac. All rights reserved. // #import "ZLLockView.h" @interface ZLLockView() @property (nonatomic, strong) NSMutableArray *btnsSelected;@property (nonatomic, assign) CGPoint lastPoint;@end @implementation ZLLockView - (NSMutableArray *)btnsSelected {if (!_btnsSelected) {_btnsSelected = [NSMutableArray array];}return _btnsSelected; } - (instancetype)init {if (self = [super init]) {[self setBtn];}return self; } - (void)setBtn {for (int i = 0; i < 9; i ++) {UIButton *btn = [[UIButton alloc] init];btn.tag = i;[btn setImage:[UIImage imageNamed:@"gesture_node_normal"] forState:UIControlStateNormal];[btn setImage:[UIImage imageNamed:@"gesture_node_highlighted"] forState:UIControlStateSelected];btn.userInteractionEnabled = NO;[self addSubview:btn];} }// Only override drawRect: if you perform custom drawing. // An empty implementation adversely affects performance during animation. - (void)drawRect:(CGRect)rect {// Drawing codeUIBezierPath *path = [UIBezierPath bezierPath];path.lineWidth = 7;path.lineCapStyle = kCGLineCapRound;path.lineJoinStyle = kCGLineJoinRound;[[UIColor blueColor] set];NSInteger count = self.btnsSelected.count;if (count ==0)return;for (NSInteger i = 0; i < count; i ++) {UIButton *btn = self.btnsSelected[i];if (i == 0) {[path moveToPoint:btn.center];}else{[path addLineToPoint:btn.center];}}[path addLineToPoint:self.lastPoint];[path stroke]; }- (void)layoutSubviews {CGFloat btnW = 74;CGFloat btnH = 74; // 间距CGFloat padding = (self.frame.size.width - btnW * 3) / 4;NSInteger count = self.subviews.count;for (NSInteger i = 0; i < count; i ++) {UIButton *btn = self.subviews[i]; // 当前按钮所处的列NSInteger column = i % 3; // 计算btn的x值CGFloat btnX = (column+1) * padding + column * btnW; // 当前按钮所处的行CGFloat row = i / 3;CGFloat btnY = (row+1) * padding + row * btnW;btn.frame = CGRectMake(btnX, btnY, btnW, btnH);} } - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {[self touchesMoved:touches withEvent:event]; } - (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event { // 获取当前点UITouch *touch = [touches anyObject];CGPoint location = [touch locationInView:touch.view];// 判断在不在范围内for (UIButton *btn in self.subviews) {if (CGRectContainsPoint(btn.frame, location)) {//判断获得的点在不在范围内//将选中的按钮放在数组里if (btn.selected == NO) {[self.btnsSelected addObject:btn];}[btn setSelected:YES];}else self.lastPoint = location;}[self setNeedsDisplay]; } - (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {NSMutableString *pwd = [NSMutableString string];for (UIButton *btn in self.btnsSelected) {[btn setSelected:NO];//拼接选中按钮的索引[pwd appendFormat:@"%ld",btn.tag];[self setNeedsDisplay];}[self.btnsSelected removeAllObjects];NSLog(@"%@",pwd);[self.delegate lockView:self didSelectedPwd:pwd]; } @end
二：在控制器中实现代理方法，代码如下：
// // ViewController.m // 手势解锁demo实现 // // Created by Mac on 16/1/9. // Copyright © 2016年 Mac. All rights reserved. // #import "ViewController.h" #import "ZLLockView.h" #import "MBProgressHUD+CZ.h" @interface ViewController ()<ZLLockViewDelegate> @property (nonatomic, strong) ZLLockView *lockView;@end@implementation ViewController- (void)viewDidLoad {[super viewDidLoad];self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"Home_refresh_bg"]];// Do any additional setup after loading the view, typically from a nib.ZLLockView *lockView = [[ZLLockView alloc] init];CGFloat screenW = [UIScreen mainScreen].bounds.size.width;lockView.frame = CGRectMake(0, 0, screenW, screenW);lockView.center = self.view.center;lockView.backgroundColor = [UIColor clearColor];[self.view addSubview:lockView];self.lockView = lockView;lockView.delegate = self;} - (void) lockView:(ZLLockView *)lockView didSelectedPwd:(NSString *)pwd {if ([pwd isEqual:@"012345678"]) {[MBProgressHUD showMessage:@"密码正确!"];[self.lockView removeFromSuperview];dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{[MBProgressHUD hideHUD];});}else{[MBProgressHUD showMessage:@"密码错误!"];dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{[MBProgressHUD hideHUD];});} }- (void)didReceiveMemoryWarning {[super didReceiveMemoryWarning];// Dispose of any resources that can be recreated. }@end
三：效果：
