I'm trying to flip between a front view and a back view, like a page of a book. I ran the following test code in a view controller and no animation happened. I only saw the back view (red square) appear statically for 2 seconds. What's wrong?
UIView *containerView = [[UIView alloc] initWithFrame:CGRectMake(0.0, 0.0, 100.0, 100.0)];
containerView.backgroundColor = [UIColor greenColor];
[self.view addSubview:containerView];
UIView *backView = [[UIView alloc] initWithFrame:containerView.bounds];
backView.backgroundColor = [UIColor redColor];
[containerView addSubview:backView];
UIView *frontView = [[UIView alloc] initWithFrame:containerView.bounds];
frontView.backgroundColor = [UIColor blueColor];
[containerView addSubview:frontView];
[UIView transitionFromView:frontView
toView:backView
duration:2.0
options:UIViewAnimationOptionTransitionFlipFromRight
| UIViewAnimationOptionShowHideTransitionViews
completion:^(BOOL finished) {
[containerView removeFromSuperview];
}];
If you declare your frontView, backView and containerViewas ivars:
#interface yourViewController ()
{
UIView *backView;
UIView *frontView;
UIView *containerView;
}
Then place your view initialization code within viewDidLoad:
UIView *containerView = [[UIView alloc] initWithFrame:CGRectMake(0.0, 0.0, 100.0, 100.0)];
containerView.backgroundColor = [UIColor greenColor];
[self.view addSubview:containerView];
UIView *backView = [[UIView alloc] initWithFrame:containerView.bounds];
backView.backgroundColor = [UIColor redColor];
[containerView addSubview:backView];
UIView *frontView = [[UIView alloc] initWithFrame:containerView.bounds];
frontView.backgroundColor = [UIColor blueColor];
[containerView addSubview:frontView];
And finally place your animation code within a method:
- (void)flippingViewTransitionAnimation
{
[UIView transitionFromView:frontView
toView:backView
duration:2.0
options:UIViewAnimationOptionTransitionFlipFromRight | UIViewAnimationOptionShowHideTransitionViews
completion:^(BOOL finished) {
[containerView removeFromSuperview];
}];
}
And subsequently call the above method from within viewDidAppear, you should then be able to see the animation run.
Related
I want to create a tipsView with a pop animate like this:
tips
But as the gif show, there is a very thin gap between the two connected view while animating;
Then I made a demo to find out the main cause and finally got the cornerRadius property. Here is demo code:
- (void)viewDidLoad {
[super viewDidLoad];
self.containerView = [[UIView alloc] initWithFrame:CGRectMake(100, 100, 214, 40)];
[self.view addSubview:self.containerView];
self.subView1 = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 214, 34)];
self.subView1.backgroundColor = [UIColor grayColor];
self.subView1.layer.cornerRadius = 6.0;
self.subView1.layer.masksToBounds = YES;
[self.containerView addSubview:self.subView1];
self.subView2 = [[UIView alloc] initWithFrame:CGRectMake(100, 34, 14, 6)];
self.subView2.backgroundColor = [UIColor darkGrayColor];
[self.containerView addSubview:self.subView2];
self.containerView.transform = CGAffineTransformMakeScale(0.01, 0.01);
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:#selector(tap:)];
[self.view addGestureRecognizer:tap];
}
- (void)tap:(UITapGestureRecognizer *)sender {
[UIView animateWithDuration:10 animations:^{
self.containerView.transform = CGAffineTransformIdentity;
} completion:^(BOOL finished) {
[UIView animateWithDuration:10 animations:^{
self.containerView.transform = CGAffineTransformMakeScale(0.01, 0.01);
}];
}];
}
The gif:
demo
and once I delete the line which used to set the cornerRadius property（or just set to 0）, its behavior was in line with expectations. The gif after deleting:
demo after deleting
I wander why the cornerRadius property cause this result, and how I can fix it.
I find a similar question and the solution here, but I don't want to combine two views into one with bezier curve.
Intially,I created view called MainView.Inside that View I have place the view called UnitsView.My Problem is: If I want to add the UnitsView over MainView means, Whether I have to use self.view or MainView .
UIView *MainView = [[UIViewalloc]initwithframe: CGRectMake (0,0,self.view.frame.size.width, self.view.frame.size.height) ];
TopView.backgroundColor = [UIColor grayColor];
[self.view addSubview:TopView];
UIView *UnitsView = [[UIView alloc]init];
[self.view (or)MainView addsubView:UnitsView];
UIView *UnitsView = [[UIView alloc]initwithframe: CGRectMake(0,0,width,height)];
[MainView addsubView:UnitsView];
[self.view addSubView:MainView];
To add view above view:-
UIView *UnitsView = [[UIView alloc]initwithframe:CGRectMake(0,0,100,100)];
UnitsView.backgroundColor = [UIColor grayColor];
[self.view addSubView:UnitsView];
UIView *SubUnit = [[UIView alloc]initwithframe:CGRectMake(0,0,50,50)];
SubUnit.backgroundColor = [UIColor greenColor];
[self.UnitsView addSubView:SubUnit];
code:
[UIView transitionFromView:vwOne toView:vwTwo
duration:1.0
options:UIViewAnimationOptionTransitionFlipFromLeft
completion:NULL]
I created two views and made IBOutlet connection. I tried a simple flip animation.what i tried is flip animate UIView only.but entire VIEW CONTROLLER is animating.
I taken the code for you from here, if you need more reference please refer that link
UIView *fromView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, containerView.frame.size.width, containerView.frame.size.height)];
fromView.backgroundColor = [UIColor blueColor];
UIView *toView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, containerView.frame.size.width, containerView.frame.size.height)];
toView.backgroundColor = [UIColor purpleColor];
[containerView addSubview:fromView];
[CATransaction flush];
[UIView transitionFromView:fromView toView:toView duration:0.4f options:UIViewAnimationOptionTransitionFlipFromLeft completion:NULL];
If you create a brand new single view app and put this code behind a button:
UIView *blah = [[UIView alloc] initWithFrame:CGRectMake(0,0,100,100)];
blah.backgroundColor = [UIColor grayColor];
[UIView transitionWithView:blah duration:1
options:UIViewAnimationOptionTransitionFlipFromRight
animations:^{
[self.view addSubview:blah];
}
completion:^(BOOL finished){
}];
The subview is added immediately with no animation. If you add the subview first then try to animate it... you get the same problem.
UIView *blah = [[UIView alloc] initWithFrame:CGRectMake(0,0,100,100)];
[self.view addSubview:blah];
[UIView transitionWithView:blah duration:1
options:UIViewAnimationOptionTransitionFlipFromRight
animations:^{
blah.backgroundColor = [UIColor grayColor];
}
completion:^(BOOL finished){
}];
How on Earth do you animate a flip for a subview while or immediately after adding it?
You generally need to have the container that constrains the animation to be in place already:
- (void)viewDidLoad
{
[super viewDidLoad];
CGRect frame = CGRectMake(0, 0, 100, 100);
_container = [[UIView alloc] initWithFrame:frame];
_container.backgroundColor = [UIColor lightGrayColor];
[self.view addSubview:_container];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
UIView *subview = [[UIView alloc] initWithFrame:_container.bounds];
subview.backgroundColor = [UIColor darkGrayColor];
[UIView transitionWithView:_container
duration:1.0
options:UIViewAnimationOptionTransitionFlipFromRight
animations:^{
[_container addSubview:subview];
}
completion:NULL];
}
This is worth a try:
UIView *blah = [[UIView alloc] initWithFrame:CGRectMake(0,0,100,100)];
blah.backgroundColor = [UIColor grayColor];
[self.view addSubview:blah];
blah.alpha = 0.0; //Or with blah.hidden = TRUE and then FALSE inside the animation block
[UIView transitionWithView:blah
duration:1
options:UIViewAnimationOptionTransitionFlipFromRight
animations:^{
blah.alpha = 1.0;
}
completion:^(BOOL finished){
}];
Creating a view with following code.
- (void)loadView {
paintView=[[UIView alloc]initWithFrame:CGRectMake(0, 50, 320, 430)];
[paintView setBackgroundColor:[UIColor yellowColor]];
self.view = paintView;
[paintView release];
But my problem is whole screen fills with yellow color, but I want with specified frame.
I am creating this view in a view based application.. Am i doing something wrong, Overridind the original view?
You can do it in following way.
- (void)loadView {
/// make a empty view to self.view
/// after calling [super loadView], self.view won't be nil anymore.
[super loadView];
paintView=[[UIView alloc]initWithFrame:CGRectMake(0, 50, 320, 430)];
[paintView setBackgroundColor:[UIColor yellowColor]];
[self.view addSubview:paintView];
[paintView release];
};
UIView *newView = [[UIView alloc] initWithFrame:CGRectMake(0,0,320,35)];
newView.backgroundColor=[UIColor clearColor];
UITextView *mytext = [[UITextView alloc] initWithFrame:CGRectMake(5.0, 0.0, 100.0, 28.0)];
mytext.backgroundColor = [UIColor clearColor];
mytext.textColor = [UIColor blackColor];
mytext.editable = NO;
mytext.font = [UIFont systemFontOfSize:15];
mytext.text = #"Mytext";
mytext.scrollEnabled=NO;
[mytext release];
[newView addSubview:mytext];
[self.view addSubview:newView];
replace self.view =paintView;
by
[self.view addSubview: paintView];
I am Going change Line No 3 in LoadView Method , you should add the subView in main View instead on assiging it Directly.
[self.view addSubview:paintview];