Im creating a custom view, it contains methods like Refresh,*LayoutSubviews*, following this tutorial
I want a label to be animated growing, to it's full width and then back to 0 width. Im using this code in "refresh" method:
[UIView animateWithDuration:1.3 animations:^{
CGRect frame = CGRectMake(50, 15, 140, 20);
[labelFav setFrame:frame];
} completion:^(BOOL finished) {
//[labelFav setHidden:YES];
[UIView animateWithDuration:1.3 animations:^{
CGRect frame = CGRectMake(50, 15, 0, 20);
[labelFav setFrame:frame];
}];
}];
The code works on any other view, but since this is a Custom view by some reason the completion block is not executing.
What happens is that it only does the first block. I set a breakpoint in the "completion" block and it stops there but the animation doesnt happen. I tried to setHidden the label and still it doesnt happen.
Any ideas?
remove auto layout from you Interface builder main screen.
your view may be changing it's frame, but auto layout is (possibly) forcing it elsewhere...
Another way to solve problem. Tested.
[UIView animateWithDuration:1.3 animations:^{
CGRect frame = CGRectMake(50, 15, 140, 20);
[labelViewForFav setFrame:frame];
} completion:^(BOOL finished) {
[UIView animateWithDuration:1.3 animations:^{
CGRect frame = CGRectMake(50, 15, 0, 20);
[labelViewForFav setFrame:frame];
} completion:^(BOOL finished) {
}];
}];
Problem is When you make UIlabel width less than its current width. Animation is not done properly. Animation not visible just jump to final frame.
to solve it Put your label in a view change the size of this view and it will work properly.
Related
I have a button and in the button action I want to show my UITableView by sliding from the button and after the cell click it should goest up by sliding effect.I did it by UIViewAnimation by setting the fixed y position and changing the height from 0 to the height
tableview.hidden=FALSE;
tableview.frame = CGRectMake(0,myButton.frame.size.height,myButton.frame.size.width, 0);
[UIView animateWithDuration:AnimationTime animations:^{
tableview.frame = CGRectMake(tableview.frame.origin.x, tableview.frame.origin.x, tableview.frame.size.width, 200 );
} completion:^(BOOL finished) {
}];
But this is not .I wanted a sliding effect.Any help will be appreciable
Use this method for animation. Provide a option for animation style. There a lot of option in objective-c for animation style
[UIView animateWithDuration:15.0f delay:0.0f options:UIViewAnimationOptions animations:^{
tableview.frame = CGRectMake(tableview.frame.origin.x, tableview.frame.origin.x, tableview.frame.size.width, 200 );
} completion:^(BOOL finished)
{
}];
for your case i thought you should use UIViewAnimationOptionTransitionFlipFromTop as animation options for slide table from top to bottom.By using this your table view get its full height in 15 sec. you can mange that too.
EDIT:
Once you clicked on cell, you want that your tableview goes up with slide effect. Than use
[UIView animateWithDuration:2.0f delay:0.0f options:UIViewAnimationOptionTransitionFlipFromBottom animations:^{
tableview.frame = CGRectMake(tableview.frame.origin.x, tableview.frame.origin.x, tableview.frame.size.width, 0 );
} completion:^(BOOL finished)
{
}];
for slide up animation.
Problem is not animation, problem is the frame you are defining. Easiest way to do this, is to define open and close frame and use them to animate.. See below..
Define Open and Close frame
-(void)initComponents{
CGRect rect=tableView.frame;
rect.origin=myButton.center;
openFrame=rect;//Assign openFrame before changing the size.
rect.size=CGSizeZero;
tableView.frame=rect;
closeFrame=rect;//Assign closeFrame
}
Call the initComponents function in viewDidLoad to set the initial state of your tableview. Now simply use the functions below on actions where you want to call.
-(void)openMenu{
[UIView animateWithDuration:.3 animations:^{
tableView.frame=openFrame;
}];
}
-(void)closeMenu{
[UIView animateWithDuration:.3 animations:^{
tableView.frame=closeFrame;
}];
}
Thats it. It should work.
Let me know. Cheers.
I recently got a problem with my App.
I usually use
[UIView animateWithDuration:(NSTimeInterval) animations:^{...} completion:^(BOOL finished) {...}];
to make my animations and it worked perfectly until now. Here's my problem's code
UIImageView *someimage = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"someimage"]];
[someimage setFrame:CGRectMake(0, 0, 200, 200)];
[self.view addSubView:someimage];
[UIView animateWithDuration:0.5 animations:^{
[someimage setFrame:CGRectMake(400, 400, 200, 200)];
} completion:^(BOOL finished) {
NSLog(#"Just finish moving some image lets rotate it!");
[UIView animateWithDuration:0.5 animations:^{
someimage.transform = CGAffineTransformMakeRotation(M_PI);
} completion:^(BOOL finished) {
NSLog(#"What just happened?");
}];
}];
I got an image and i moved it from one corner to another position using animations. Then, when the animation finishes I rotate it, but when I make that rotation the UIImageView appear at the corner again.
Can someone explain me why this happen and how to handle it?
Thanks!
The UIView class reference says:
WARNING If the transform property is not the identity transform, the
value of this property is undefined and therefore should be ignored.
Changing a view's (or layer's) frame and its transform at the same time does not work as expected. Instead, change the view's center property.
Hi I have piece of code which only one line is not working...
[UIView animateWithDuration:0.3 delay:0.0 options:UIViewAnimationOptionCurveEaseOut animations:^{
[label setFrame:CGRectMake(0, 0, frame.size.width, kStandardLabelHeight)]; //working
[self.currentLabel setFrame:CGRectOffset(self.currentLabel.frame, frame.size.width, 0)]; //not working
[self.currentLabel setAlpha:0.0f]; //working
} completion:^(BOOL finished) {
[self.currentLabel removeFromSuperview];
self.currentLabel = label;
}];
I'm running out of ideas what is wrong...
What I find out is: if I turn off "Use Auto Layout", then it magically working, so this issue is connected with auto layout.
After a search, I find this: http://weblog.invasivecode.com/post/42362079291/auto-layout-and-core-animation-auto-layout-was
Add constraint outlet mapping for your view, then instead of using setFrame, updating constraints will do the trick!
Below is my final implementation (_topConstraint is the top vertical space constraint of table view):
- (IBAction)switchButtonTouched:(id)sender
{
if (_topConstraint.constant <= 0)
_topConstraint.constant = _buttonView.frame.size.height;
else
_topConstraint.constant = 0;
[_tableView setNeedsUpdateConstraints];
[UIView animateWithDuration:0.5f animations:^(void){
[_tableView layoutIfNeeded];
} completion:^(BOOL finished){
}];
}
Frame must be a CGRect with 4 parameters: (xPosition,yPosition,width,height). Use CGRectMake for set frame
self.currentLabel.frame = CGRectMake(100, 100, self.currentLabel.frame.size.width, self.currentLabel.frame.size.height)
You set 0.3 sec the animation duration, and when it s end you remove it from the view. This is too short. set the duration for example 2, and you will see that your label is moving .
Sometimes you should set frames for animating views also after animation, for example in completion block, try something like that
[UIView animateWithDuration:0.3 delay:0.0 options:UIViewAnimationOptionCurveEaseOut animations:^{
[label setFrame:CGRectMake(0, 0, frame.size.width, kStandardLabelHeight)]; //working
[self.currentLabel setFrame:CGRectOffset(self.currentLabel.frame, frame.size.width, 0)]; //not working
[self.currentLabel setAlpha:0.0f]; //working
} completion:^(BOOL finished) {
self.frame = currentLabelFrame;
label.frame = label.frame;
[self.currentLabel removeFromSuperview];
self.currentLabel = label;
}];
If your issue is neither Autolayout related, or the others listed here, there is also another possible problem that turned out to be my issue. I'm simultaneously running a UIView transition (transitionFromView:toView:) on views that take up the same screen space (Different superviews, not related, other than positioning in the superview of the overarching view controller).
My code looked like this:
[UIView transitionFromView:self.someView
toView:self.someOtherView
duration:0.6f
options:UIViewAnimationOptionTransitionCrossDissolve | UIViewAnimationOptionShowHideTransitionViews
completion:NULL];
[UIView animateWithDuration:0.3
delay:0.0 options:UIViewAnimationOptionCurveEaseOut
animations:^{
[self.someThirdView setFrame:someFrame]; //not working
[self.someThirdView setAlpha:1.0f]; //working
} completion:nil];
The frame changed, but it popped to the new frame rather than animating. I'm guessing this is an internal iOS issue. As soon as I removed the "transitionFromView:..." call, the frame animation worked fine.
My solution for now has been to move the second animation into the completion block of the transitionFromView. It's not perfect, as the two animations should have lined up, but it is a passable solution for now.
I am using following code to animate the appearance of selectionMoreOptionView
[selectionMoreOptionView setFrame:CGRectMake(974, 56, 50, 0)];
[self.view insertSubview:selectionMoreOptionView aboveSubview:lightBoxView];
[lightBoxView setAlpha:0.0];
[UIView animateWithDuration:5.0
delay:0.0
options:UIViewAnimationOptionCurveLinear
animations:^{
[lightBoxView setAlpha:0.5];
[selectionMoreOptionView setFrame:CGRectMake(974, 56, 50, 100)];
} completion:^(BOOL finished) {
}];
But it is not animating instead it just appears at once without animating. What i am doing wrong?
Simply try this
[UIView animateWithDuration:.5 animations:^(void){
[lightBoxView setAlpha:0.5];
[selectionMoreOptionView setFrame:CGRectMake(974, 56, 50, 100)];
}];
The animation was working fine the problem was that i had two buttons inside the view big enough to cover all of the view. The views property Clip Subviews was unchecked. I had thought when a parent resizes it effects its child's automatically, but it don't in some cases when parent do not clip its subviews. Thanks everybody for your reply :)
check your
[selectionMoreOptionView setFrame:CGRectMake(974, 56, 50, 100)];
I think XY co-ordinates going out of viewController.
Try to bring it in the ViewController area,as of X should be possibly less than 320
and y<480 so that you can see your view.
Im trying to animate a UIView with this code:
[self.view bringSubviewToFront:RegNrView];
[UIView animateWithDuration:.5 animations:^{
RegNrView.frame = CGRectMake(0, 0, 320, 460);
}
completion:^(BOOL finished) {
}];
The RegNrView is a UIView containing a UITextField and has the frame: (320,0,320,460).
This is called from an IBAction. The first call nothing happens, but the second time it works. Why does it do that?