指纹解锁：
– (void)evaluatePolicy{ LAContext *context = [[LAContext alloc] init]; //If set to empty string, the button will be hidden. context.localizedFallbackTitle = @""; // show the authentication UI with our reason string [context evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics localizedReason:NSLocalizedString(@"通过验证指纹解锁", nil) reply: ^(BOOL success, NSError *authenticationError) { if (success) {
//指纹验证成功后，跳转到主界面 YDUnlockViewController *unlockVc = [[YDUnlockViewController alloc] init]; [self presentViewController:unlockVc animated:YES completion:nil]; } else {
//指纹验证失败，跳转到手势解锁界面 YDLockViewController *lockVc = [[YDLockViewController alloc] init]; [self presentViewController:lockVc animated:YES completion:nil]; } }];}
添加手势解锁按钮
-(void)setup{ for (int i = 0; i<9; i++) { UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom]; [btn setImage:[UIImage imageNamed:@"gesture_node_normal"] forState:UIControlStateNormal]; [btn setImage:[UIImage imageNamed:@"gesture_node_highlighted"] forState:UIControlStateSelected]; btn.tag = i; //不许用户点击，只能通过手指滑动监听 btn.userInteractionEnabled = NO; [self addSubview:btn]; }}
设置按钮的位置
-(void)layoutSubviews{ [super layoutSubviews]; CGFloat btnW = 74; CGFloat btnH = 74; CGFloat margin = (self.frame.size.width – (3 * btnW)) / 4; CGFloat btnX; CGFloat btnY; for (int i = 0; i < self.subviews.count; i++) { UIButton *btn = self.subviews[i]; btnX = (i % 3) * (btnW + margin) + margin; btnY = (i / 3) * (btnH + margin) + margin; btn.frame = CGRectMake(btnX, btnY, btnW, btnH); }}
获取用户刚按下时的触摸点
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{ //获取按下的点 CGPoint startPoint = [self getCurrentTouchPoint:touches]; //判断触摸的位置是否在按钮的范围内 UIButton *btn = [self getMoveButton:startPoint]; if (btn && btn.selected != YES) { btn.selected = YES; [self.buttons addObject:btn]; }}
获取用户手指移动的轨迹
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{ //获取按下的点 CGPoint movePoint = [self getCurrentTouchPoint:touches]; //判断触摸的位置是否在按钮的范围内 UIButton *btn = [self getMoveButton:movePoint]; if (btn && btn.selected != YES) { btn.selected = YES; [self.buttons addObject:btn]; } self.currentPoint = movePoint; [self setNeedsDisplay];}
用户手势密码输入完毕后-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{ //取出用户输入的密码 NSMutableString *result = [NSMutableString string]; for (UIButton *btn in self.buttons) { [result appendFormat:@"%d",btn.tag]; } if ([self.delegate respondsToSelector:@selector(lockViewDidFinish:passWord:)]) { [self.delegate lockViewDidFinish:self passWord:result]; } //恢复按钮的状态(让数组的每个元素执行这个方法) //不管用 不知道为什么// [self.buttons makeObjectsPerformSelector:@selector(setSelected:) withObject:@(NO)]; for (UIButton *btn in self.buttons) { [btn setSelected:NO]; } //清空数组 [self.buttons removeAllObjects]; [self setNeedsDisplay]; //清空currentPoint self.currentPoint = CGPointZero;}获取当前的点-(CGPoint)getCurrentTouchPoint:(NSSet *)touches{ UITouch *touch = [touches anyObject]; CGPoint point = [touch locationInView:touch.view]; return point;}-(UIButton *)getMoveButton:(CGPoint)point{ for (UIButton *btn in self.subviews) { if (CGRectContainsPoint(btn.frame, point)) { return btn; } } return nil;}-(void)drawRect:(CGRect)rect{ //获取上下文 CGContextRef ctf = UIGraphicsGetCurrentContext(); //清空上下文 CGContextClearRect(ctf, rect); for (int i = 0; i<self.buttons.count; i++) { UIButton *btn = self.buttons[i]; if (0 == i) { CGContextMoveToPoint(ctf, btn.center.x, btn.center.y); }else{ CGContextAddLineToPoint(ctf, btn.center.x, btn.center.y); } } //判断如果当前点是0，，0 就不绘制// if (!CGPointEqualToPoint(self.currentPoint, CGPointZero)) {// //当所有按钮的中点都连接好之后，再连接手指当前的位置// CGContextAddLineToPoint(ctf, self.currentPoint.x, self.currentPoint.y);// } //判断数组中是否有按钮 if (self.buttons.count != 0) { CGContextAddLineToPoint(ctf, self.currentPoint.x, self.currentPoint.y); } CGContextSetLineWidth(ctf, 10); [[UIColor redColor] set]; CGContextStrokePath(ctf);}
在乎的是沿途的风景以及看风景的心情，让心灵去旅行！
