0
나는 이미지 기반 응용 프로그램을 만들고있어 내가 만든 UIView 내에서 회전/이동/크기 조정 된 이미지를 표시하고 싶습니다. UIGesture를 구현하는 방법에 대한 유용한 자습서를 따랐으며이를 사용하여 익숙해졌습니다. UIView 내에서 제스처를 유지할 수 있도록 좀 더 뒤에있는 코드를 이해하면됩니다.UIView 외부에서 GestureRecongnizers를 사용하여 UIImageView를 이동하는 것을 어떻게 막을 수 있습니까?
-(void)scale:(id)sender {
NSLog(@"See a pinch gesture");
[self.view bringSubviewToFront:[(UIPinchGestureRecognizer*)sender view]];
if([(UIPinchGestureRecognizer*)sender state] == UIGestureRecognizerStateEnded) {
lastScale = 1.0;
return;
}
CGFloat scale = 1.0 - (lastScale - [(UIPinchGestureRecognizer*)sender scale]);
CGAffineTransform currentTransform = [(UIPinchGestureRecognizer*)sender view].transform;
CGAffineTransform newTransform = CGAffineTransformScale(currentTransform, scale, scale);
[[(UIPinchGestureRecognizer*)sender view] setTransform:newTransform];
lastScale = [(UIPinchGestureRecognizer*)sender scale];
}
-(void)rotate:(id)sender {
NSLog(@"See a rotate gesture");
[self.view bringSubviewToFront:[(UIRotationGestureRecognizer*)sender view]];
if([(UIRotationGestureRecognizer*)sender state] == UIGestureRecognizerStateEnded) {
lastRotation = 0.0;
return;
}
CGFloat rotation = 0.0 - (lastRotation - [(UIRotationGestureRecognizer*)sender rotation]);
CGAffineTransform currentTransform = [(UIPinchGestureRecognizer*)sender view].transform;
CGAffineTransform newTransform = CGAffineTransformRotate(currentTransform,rotation);
[[(UIRotationGestureRecognizer*)sender view] setTransform:newTransform];
lastRotation = [(UIRotationGestureRecognizer*)sender rotation];
}
-(void)move:(id)sender {
NSLog(@"See a move gesture");
[[(UITapGestureRecognizer*)sender view] layer];//removeAllAnimations];
[self.view bringSubviewToFront:[(UIPanGestureRecognizer*)sender view]];
CGPoint translatedPoint = [(UIPanGestureRecognizer*)sender translationInView:self.view];
if([(UIPanGestureRecognizer*)sender state] == UIGestureRecognizerStateBegan) {
firstX = [[sender view] center].x;
firstY = [[sender view] center].y;
}
translatedPoint = CGPointMake(firstX+translatedPoint.x, firstY+translatedPoint.y);
[[sender view] setCenter:translatedPoint];
if([(UIPanGestureRecognizer*)sender state] == UIGestureRecognizerStateEnded) {
CGFloat finalX = translatedPoint.x + (.35*[(UIPanGestureRecognizer*)sender velocityInView:self.view].x);
CGFloat finalY = translatedPoint.y + (.35*[(UIPanGestureRecognizer*)sender velocityInView:self.view].y);
if(UIDeviceOrientationIsPortrait([[UIDevice currentDevice] orientation])) {
if(finalX < 0) {
finalX = 0;
}
else if(finalX > 768) {
finalX = 768;
}
if(finalY < 0) {
finalY = 0;
}
else if(finalY > 1024) {
finalY = 1024;
}
}
else {
if(finalX < 0) {
finalX = 0;
}
else if(finalX > 1024) {
finalX = 768;
}
if(finalY < 0) {
finalY = 0;
}
else if(finalY > 768) {
finalY = 1024;
}
}
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:.35];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
[[sender view] setCenter:CGPointMake(finalX, finalY)];
[UIView commitAnimations];
}
}
UIImage *image;
UIImageView *theImageView;
UIView *layoutOne;
그 아래 내 선언 제스처 Recognisers하고있다가 내가 그들의 업무를 수행하도록 얻기 위해 다음 자습서의 다른 부분입니다
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
layoutOne = [[UIView alloc] initWithFrame:CGRectMake(95.0, 107.0, 578, 682)];
theImageView = [[UIImageView alloc] initWithFrame:[layoutOne frame]];
[theImageView setImage:image];
theImageView.userInteractionEnabled = TRUE;
[layoutOne addSubview:theImageView];
takePhoto.hidden = YES;
theImageView.clipsToBounds = YES;
UIPinchGestureRecognizer *pinchRecognizer = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(scale:)];
[pinchRecognizer setDelegate:self];
[theImageView addGestureRecognizer:pinchRecognizer];
UIRotationGestureRecognizer *rotationRecognizer = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotate:)];
[rotationRecognizer setDelegate:self];
[theImageView addGestureRecognizer:rotationRecognizer];
UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(move:)];
[panRecognizer setMinimumNumberOfTouches:1];
[panRecognizer setMaximumNumberOfTouches:1];
[panRecognizer setDelegate:self];
[theImageView addGestureRecognizer:panRecognizer];
UITapGestureRecognizer *deleteButton = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(delButton:)];
[deleteButton setNumberOfTapsRequired:2];
[deleteButton setDelegate:self];
[theImageView addGestureRecognizer:deleteButton];
UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapped:)];
[tapRecognizer setNumberOfTapsRequired:1];
[tapRecognizer setDelegate:self];
[tapRecognizer requireGestureRecognizerToFail:deleteButton];
[theImageView addGestureRecognizer:tapRecognizer];
[self.view addSubview:theImageView];
}
참고 : 여기에 코드입니다
코드 줄이 길어서 미안합니다. 제가 성취하고자하는 것을 정확히 이해하고 싶습니다. 나는 주로 -(void)move:(id)sender 내에서 계속 진행되는 수학 문제를 이해하고 싶기 때문에 UIImage/UIImageView가 내가 만든 UI 하위 뷰 (layoutOne) 외부로 이동하는 것을 막을 수 있습니다. 도움이 될 수 있다면 저에게 정말 감사 할 것입니다! 감사.