在需要显示的控制器中写入如下代码引用
- (void)viewDidLoad {
[super viewDidLoad];
View*view = [[Viewalloc]initWithFrame:self.view.bounds];
[self.viewaddSubview:view];}
//假设正确的手势是1-2-3-6-5-4-7-8-9
@interface View ()
@property (nonatomic,copy) NSMutableArray *array;//button数组
@property (nonatomic,copy) NSMutableArray *linearray;//需要划线的button数组
@property (nonatomic,assign) CGPoint lastPoint;//手指最后的位置
@property (nonatomic,copy) NSArray *gesture;//手势密码
@end
@implementation View
- (NSMutableArray *)array {
if(!_array) {
CGFloatspace =60;
_array = [NSMutableArray arrayWithCapacity:9];
CGFloatwidth =(self.frame.size.width-4*space)/3;
for(inti=0;i<9;i++) {
UIButton*btn = [[UIButtonalloc]initWithFrame:CGRectMake(space+(width+space)*(i%3),100+(width+space)*(i/3), width, width)];
btn.tag= i+1;
[btnsetImage:[UIImage imageNamed:@"normal"] forState:UIControlStateNormal];
[btnsetImage:[UIImage imageNamed:@"select"] forState:UIControlStateSelected];
[btnsetImage:[UIImage imageNamed:@"disable"] forState:UIControlStateDisabled];
btn.userInteractionEnabled = NO;
[selfaddSubview:btn];
[_arrayaddObject:btn];
}
}
return _array;
}
- (NSMutableArray*)linearray {
if (!_linearray) {
_linearray = [NSMutableArray arrayWithCapacity:9];
}
return _linearray;
}
- (instancetype)initWithFrame:(CGRect)frame {
if(self= [superinitWithFrame:frame]) {
[selfarray];
self.gesture =[@"1,2,3,6,5,4,7,8,9" componentsSeparatedByString:@","];
self.backgroundColor = [UIColor clearColor];
}
return self;
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent*)event {
UITouch*touch = touches.anyObject;
CGPointpoint = [touchlocationInView:touch.view];
for(UIButton*btninself.array) {
if(CGRectContainsPoint(btn.frame, point)) {
btn.selected=YES;
}
}
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent*)event {
//判断手势密码是否正确
NSMutableArray *arr = [NSMutableArray arrayWithCapacity:9];
for(UIButton*btninself.linearray) {
[arraddObject:[NSStringstringWithFormat:@"%ld",(long)btn.tag]];
}
if(![arrisEqualToArray:self.gesture]) {
self.lastPoint= [[self.linearraylastObject]center];
[self setNeedsDisplay];
for(UIButton*btninself.linearray) {
btn.selected=NO;
btn.enabled=NO;
}
self.userInteractionEnabled = NO;
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(5*NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
self.userInteractionEnabled = YES;
[selftouchEnd];
NSLog(@"手势错误！！！");
});
}else{
[selftouchEnd];
NSLog(@"手势正确！！！");
}
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent*)event {
UITouch*touch = touches.anyObject;
CGPointpoint = [touchlocationInView:touch.view];
for(UIButton*btninself.array) {
if(CGRectContainsPoint(btn.frame, point)) {
btn.selected=YES;
if(![self.linearraycontainsObject:btn]) {
[self.linearrayaddObject:btn];
}
}
}
self.lastPoint= point;
[self setNeedsDisplay];
}
- (void)touchEnd {
for(UIButton*btninself.array) {
btn.selected=NO;
btn.enabled=YES;
}
[self.linearray removeAllObjects];
[self setNeedsDisplay];
}
- (void)drawRect:(CGRect)rect {
if(self.linearray.count==0) {
return;
}
UIBezierPath *path = [UIBezierPath bezierPath];
for(inti=0; i
UIButton*btn =self.linearray[i];
if(i==0) {
[pathmoveToPoint:btn.center];
}else{
[pathaddLineToPoint:btn.center];
}
}
[pathaddLineToPoint:self.lastPoint];
path.lineWidth=5;
path.lineCapStyle = kCGLineCapRound;
path.lineJoinStyle = kCGLineJoinRound;
[[UIColor blueColor] set];
[pathstroke];
}
@end
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