ios 简单的手势解锁到按钮 详细

此类继承UIview，UIview在storyboard中拖了控件，控件背景色最好设置透明，控件需要勾选☑️允许交互：uesr interaction enable

#import “HMView.h”

#define KButtonCount 9

@interface HMView()
@property (nonatomic,strong)NSMutableArray *btns;
@property (nonatomic,strong)NSMutableArray *lineBtns;
@end

@implementation HMView

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.

• (void)drawRect:(CGRect)rect {
  // Drawing code
  }
  */
  -(NSMutableArray *)lineBtns
  {
  if (!_lineBtns) {
  _lineBtns=[NSMutableArray array];
  }
  return _lineBtns;
  }

-(NSMutableArray *)btns
{
if (!_btns) {
_btns=[NSMutableArray array];

    //创建按钮
    for (int i=0; i<KButtonCount; ++i) {
        UIButton *btn=[[UIButton alloc]init];
        //禁止交互
        [btn setUserInteractionEnabled:NO];
        
        [btn setBackgroundImage:[UIImage imageNamed:@"我的icon"] forState:UIControlStateNormal];
        [btn setBackgroundImage:[UIImage imageNamed:@"我的-选中"] forState:UIControlStateSelected];

// btn.backgroundColor=[UIColor redColor];
[self addSubview:btn];

        [self.btns addObject:btn];
        
    }
}
return _btns;

}
//触摸
-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{

// [super touchesBegan:touches withEvent:event];
UITouch *t=touches.anyObject;

CGPoint p=[t locationInView:t.view];
for (int i=0; i<self.btns.count; ++i) {
    UIButton *btn=self.btns[i];
    
    if (CGRectContainsPoint(btn.frame, p)) {
        btn.selected=YES;
        
        [self.lineBtns addObject:btn];
    }
}

}

• (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
  {
  UITouch *t=touches.anyObject;
  CGPoint p=[t locationInView:t.view];

  for (int i=0; i<self.btns.count; ++i) {
  UIButton *btn=self.btns[i];
  if (CGRectContainsPoint(btn.frame, p)) {
  btn.selected=YES;
  //不重复添加
  if (![self.lineBtns containsObject:btn]) {
  [self.lineBtns addObject:btn];
  }

    }
  

  }

  [self setNeedsDisplay];//重绘

}

• (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
  {
  for (int i =0; i<self.btns.count; ++i) {
  UIButton *btn=self.btns[i];
  btn.selected=NO;

  }
  //清空线
  [self.lineBtns removeAllObjects];
  [self setNeedsDisplay];//重绘
  }
  //画线
  -(void)drawRect:(CGRect)rect
  {
  UIBezierPath *path=[UIBezierPath bezierPath];

  for (int i=0; i<self.lineBtns.count; ++i) {
  UIButton *btn=self.lineBtns[i];
  if (i==0) {
  [path moveToPoint:btn.center];
  }else
  {
  [path addLineToPoint:btn.center];
  }
  }
  [[UIColor whiteColor]set];
  [path setLineWidth:10];
  [path stroke];//渲染

}

-(void)layoutSubviews
{
[super layoutSubviews];
//计算位置
CGFloat w=36;//根据图片大小设置
CGFloat h=w;
int colCount=3;
CGFloat margin=(self.frame.size.width-3w)/4;
for (int i=0;i<self.btns.count; i++) {
CGFloat x=(i%colCount)(margin+w)+margin;
CGFloat y=(i/colCount)*(margin+w)+margin;
[self.btns[i] setFrame:CGRectMake(x, y, w, h)];
}
}

@end

本文地址：https://blog.csdn.net/wuyan9527/article/details/107481614