直播当中的装饰品

神灯产品用户体验群：573431381

在直播界面，需要给主播一些小的装饰品如发卡，面具，帽子等。



通常会有拖拉 、旋转、缩放等，下面简单介绍，这几中手势。

直接看代码

“`

//装饰品

- (void)adornButtonClick

{

UIImageView *panView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 100, 50, 50)];

[self.view addSubview:panView];

panView.userInteractionEnabled = YES;

[panView setMultipleTouchEnabled:YES];

panView.backgroundColor = [UIColor clearColor];

panView.image = [ UIImage imageNamed:@”面具.jpg”];

// 拖动手势

UIPanGestureRecognizer * panGestureRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(doHandlePanAction:)];

[panView addGestureRecognizer:panGestureRecognizer];

// 旋转手势

UIRotationGestureRecognizer *rotationGestureRecognizer = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotateView:)];

[panView addGestureRecognizer:rotationGestureRecognizer];

// 缩放手势
UIPinchGestureRecognizer *pinchGestureRecognizer = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchView:)];
[panView addGestureRecognizer:pinchGestureRecognizer];

}

//拖动手势

- (void) doHandlePanAction:(UIPanGestureRecognizer *)paramSender{

CGPoint point = [paramSender translationInView:self.view];
NSLog(@"X:%f;Y:%f",point.x,point.y);

paramSender.view.center = CGPointMake(paramSender.view.center.x + point.x, paramSender.view.center.y + point.y);
[paramSender setTranslation:CGPointMake(0, 0) inView:self.view];

}

// 处理旋转手势

- (void) rotateView:(UIRotationGestureRecognizer *)rotationGestureRecognizer

{

UIView *view = rotationGestureRecognizer.view;

if (rotationGestureRecognizer.state == UIGestureRecognizerStateBegan || rotationGestureRecognizer.state == UIGestureRecognizerStateChanged) {

view.transform = CGAffineTransformRotate(view.transform, rotationGestureRecognizer.rotation);

[rotationGestureRecognizer setRotation:0];

}

}

// 处理缩放手势

- (void) pinchView:(UIPinchGestureRecognizer *)pinchGestureRecognizer

{

UIView *view = pinchGestureRecognizer.view;

if (pinchGestureRecognizer.state == UIGestureRecognizerStateBegan || pinchGestureRecognizer.state == UIGestureRecognizerStateChanged) {

view.transform = CGAffineTransformScale(view.transform, pinchGestureRecognizer.scale, pinchGestureRecognizer.scale);

pinchGestureRecognizer.scale = 1;

}

}

“`记得要添加

panView.userInteractionEnabled = YES;

[panView setMultipleTouchEnabled:YES];

这样效果能显示出来