//添加view中子控件-(void)awakeFromNib{//  创建按钮  for (int i=0; i<9; i++) {    self.LineColor=[UIColor blueColor];  UIButton *btn=[UIButton buttonWithType:UIButtonTypeCustom];    btn.userInteractionEnabled=NO;  //    设置按钮属性  [btn setBackgroundImage:[UIImage imageNamed:@"gesture_node_normal"] forState:UIControlStateNormal];    [btn setBackgroundImage:[UIImage imageNamed:@"gesture_node_highlighted"] forState:UIControlStateHighlighted ];    [btn setBackgroundImage:[UIImage imageNamed:@"gesture_node_error"] forState:UIControlStateDisabled];    [self addSubview:btn];  }}//布局view子控件-(void)layoutSubviews{  [super layoutSubviews];  CGFloat width=74;  CGFloat height=74;  CGFloat Margin=(self.bounds.size.width-3*width)/2;//  遍历设置9个button的frame  [self.subviews enumerateObjectsUsingBlock:^(__kindof UIView * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {//    通过tag设置按钮的索引标识    obj.tag=idx;      int row=(int)idx/3;      int col=idx%3;    obj.frame=CGRectMake(col*(Margin + width), row*(Margin +height), width, height);  }];}

1.2将定义好的view通过xib添加到viewController上

     首先，定义一个blockview（九宫格view）的类方法，

// 加载xib文件+(instancetype)lockView{  return [[[NSBundle mainBundle]loadNibNamed:@"MYblockView" owner:nil options:nil]lastObject];}

//  设置控制器view的背景图片  self.view.backgroundColor=[UIColor colorWithPatternImage:[UIImage imageNamed:@"bg"]];  MYblockView *blockView=[MYblockView lockView];  blockView.center=self.view.center;//  将blockview添加到viewController上  [self.view addSubview:blockView];

2.实现按钮被点击及滑动过程中按钮状态的改变

2.1定义数组类型的成员属性，用来装被点击的按钮

#pragma mark----绘制图形-(void)drawRect:(CGRect)rect{  if (self.btnArr.count==0 ) {    return;  }//  创建路径  UIBezierPath *path=[UIBezierPath bezierPath];//  遍历所有按钮进行绘制  [self.btnArr enumerateObjectsUsingBlock:^(__kindof UIButton * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {//    第一个按钮，中心点就是起点    if (idx==0) {      [path moveToPoint:obj.center];    }else    {      [path addLineToPoint:obj.center];    }  }];  [path addLineToPoint:self.currentPoint];//  设置路径属性  path.lineWidth=10;  path.lineCapStyle=kCGLineCapRound;  path.lineJoinStyle=kCGLineJoinRound;  [self.LineColor setStroke];//  渲染  [path stroke];}

 2.3开始触摸

#pragma mark----开始滑动-(void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{//  获取触摸对象  UITouch *touch=touches.anyObject;//  获取触摸点  CGPoint loc=[touch locationInView:self];  self.currentPoint=loc;//  遍历按钮，如果按钮在滑动路径上，就改变按钮状态  [self.subviews enumerateObjectsUsingBlock:^(__kindof UIButton * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {    BOOL isContains=CGRectContainsPoint(obj.frame, loc);    if (isContains&&obj.highlighted==NO) {      [self.btnArr addObject:obj];      obj.highlighted=YES;    }  }];//  重绘  [self setNeedsDisplay];   }

3.实现滑动过程中的连线和4.绘制完毕后判定密码是否正确，

#import <UIKit/UIKit.h>@class MYblockView;//声明代理@protocol MYblockViewDelegate <NSObject>@optional//代理方法-(BOOL) blockView:(MYblockView *)blockView finishedWithPassword:(NSString *)password;@end@interface MYblockView : UIView+(instancetype)lockView;//设置代理成员属性@property(nonatomic,weak)id<MYblockViewDelegate>delegate;@end

5.密码判定后实现跳转。

-(BOOL)blockView:(MYblockView *)blockView finishedWithPassword:(NSString *)password{  if ([password isEqualToString:@"012"]) {        UIViewController *two=[UIViewController new];    two.view.backgroundColor=[UIColor greenColor];    [self.navigationController pushViewController:two animated:YES];    return YES;  }  else{      return NO;  }}

       最后设置控制器navigationbar属性

 [self.navigationController.navigationBar setBackgroundColor:[UIColor redColor]];  [ self.navigationController.navigationBar setTitleTextAttributes:@{                              NSForegroundColorAttributeName :[UIColor whiteColor]                                     }];

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原标题：iOS开发之手势解锁

关键词：IOS