I don't understand what happening with a simple code. I want to resize the width of an UITextField but when I do it, it also changes its origin.x. I tried many configurations but I can't find a solution.
The textfield is in an UIView:
containerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 50)];
containerView.backgroundColor = [UIColor whiteColor];
textfield = [[UITextField alloc] initWithFrame:CGRectMake(5,20,200,30)];
textfield.leftViewMode = UITextFieldViewModeAlways;
And here is the code for changing its width:
[UIView beginAnimations:nil context:nil];
textfield.bounds = CGRectMake(textfield.bounds.origin.x,
textfield.bounds.origin.y,
textfield.bounds.size.width + 110,
textfield.bounds.size.height);
[UIView commitAnimations];
Each time, origin.x changes to something like -55 (but NSLog prints 0). Do you have any idea? I would like to maintain always the same origin.x.
Thanks for your help.
Instead of changing the bounds, try changing the frame:
[UIView beginAnimations:nil context:nil];
textfield.frame= CGRectMake(textfield.frame.origin.x,
textfield.frame.origin.y,
textfield.frame.size.width + 110,
textfield.frame.size.height);
[UIView commitAnimations];
From the docs:
Changing the bounds size grows or shrinks the view relative to its center point
And this seems to be the problem in your case.
Related
i have a view called painView and after i add it with size of (40 , 40 )
i wanted to animate it when resizing to size (20 , 20) but even without animation it doesn't change it's size after adding it , only it's location , and i am not using autolayout ..
dragView* paintView=[[dragView alloc]initWithFrame:CGRectMake(x, y, 40,40 )];
UIImageView *imgView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"coolPoint.png" ] ];
imgView.userInteractionEnabled = NO;
imgView.clipsToBounds = YES;
imgView.contentMode = UIViewContentModeScaleToFill;
imgView.frame = CGRectMake(0, 0, paintView.frame.size.width,paintView.frame.size.height );
[paintView addSubview:imgView];
[self.canvasView addSubview:paintView];
[UIView beginAnimations:#"animateAddContentView" context:nil];
[UIView setAnimationDuration:0.4];
paintView.frame = CGRectMake(x, y, 20, 20);
[UIView commitAnimations];
Your paintView has changed, but the imageView(imgView) did not. Set clipsToBounds of paintView to YES to check it. So when you change frame of paintView, change frame of imgView too.
Example screen capture:
What is a better way to animate the resizing of a UIView that includes subviews?
My current method:
In the screen capture, the parent UIView (orange) has a subview UILabel (yellow + autoresizing). animateWithDuration is animating the resizing of the parent UIView's frame. The problem with this method is it does not animate the resizing of the subview. It abruptly changes, where it should scale animatedly.
Is explicitly animating the subview best, or is there a more efficient method? (e.g. CGAffineTransform?)
Sample code:
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
self.parentView = [[UIView alloc] initWithFrame:CGRectMake(10, 100, 200, 200)];
self.parentView.backgroundColor = [UIColor orangeColor];
[self.view addSubview:self.parentView];
self.childLabel = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 180, 180)];
self.childLabel.autoresizingMask = UIViewAutoresizingFlexibleWidth |
UIViewAutoresizingFlexibleHeight;
self.childLabel.backgroundColor = [UIColor yellowColor];
[self.parentView addSubview:self.childLabel];
[NSTimer scheduledTimerWithTimeInterval:2
target:self
selector:#selector(randomizeParentViewSize)
userInfo:nil
repeats:YES];
}
- (void)randomizeParentViewSize {
CGFloat width = arc4random_uniform(100) + 50;
CGFloat height = arc4random_uniform(100) + 50;
[UIView animateWithDuration:1.5f
delay:0.0f
options:0
animations:^{
self.parentView.frame = CGRectMake(10, 50 + height, width, height);
}
completion:^(BOOL finished) {
}];
}
I Guess Your Yellow SubView is UILabel ?
When UILabel change frame size in UIViewAnimation will scale Immediately
unless you use the CGAffineTransformScale
some example
when
[self.view addSubview:view_parent];
[view_parent addSubview:view_component];
if both view_parent and view_component is UIView
[UIView animateWithDuration:2.0 animations:^{
[view_parent setFrame:CGRectMake(0, 20, 160, 160)];
[view_component setFrame:CGRectMake(20, 20, 80, 80)];
}];
is work fine
but when view_parent is UIView and view_component is UILabel
you need do something like ...
[UIView animateWithDuration:2.0 animations:^{
[view_parent setFrame:CGRectMake(0, 20, 160, 160)];
view_component.transform = CGAffineTransformScale(view_component.transform, 0.5, 0.5);
[view_component setFrame:CGRectMake(20, 20, 80, 80)];
}];
Wish help ~
To animate the view and also the subview you could use this code:
[UIView animateWithDuration:0.5f animations:^{
self.testView.transform = CGAffineTransformMakeScale(0.5, 0.5);
}];
More Info
You can't use frame, bounds, or center if you are also animating things using CGAffine, So if you also need to move the view use something like this:
CGAffineTransform transform = CGAffineTransformMakeTranslation(150,400);
transform = CGAffineTransformScale(transform, 0.5, 0.5);
Use UIViewAnimationOptionLayoutSubviews:
Add proper leading, trailing, top and bottom constraints on the subview.
[UIView animateWithDuration:0.2 delay:0 options:UIViewAnimationOptionLayoutSubviews animations:^{ //resize the superview
} completion:nil];
I want to create a turn-based match. When player received a notification player:receivedTurnEventForMatch:didBecomeActive:
I want to show a banner that slides from the top of the screen. "Your turn. Play" similar to the banner that Game Center shows when player is authenticated.
How can I do it? Should it be a UIViewController or UIAlert, or what?
here is a good example for notification for what you want, i hope that help you:
https://github.com/ekurutepe/MPNotificationView
or
https://github.com/edgurgel/CMNavBarNotificationView
or
https://github.com/terryworona/TWMessageBarManager
There are MANY ways to do what you mentioned. This is just one of them. Feel free to change the code around and read up on UIView animations to you can try out different things yourself.
-(void)myMethod {
// create UILabel and set its properties
UILabel *myLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 20, 320, 50)];
myLabel.backgroundColor = [UIColor grayColor];
NSString *myLabelText = #"Welcome back, Mike Lyman"; // showing you to use NSString for label text
myLabel.textAlignment = NSTextAlignmentCenter;
myLabel.text = myLabelText;
[self.view addSubview:myLabel]; // add UILabel to view
myLabel.frame = CGRectMake(0, -50, 320, 50); // set text label frame offscreen
// start the animation to slide UILabel into visible view
[UIView animateWithDuration:0.5 delay:0
options:UIViewAnimationOptionCurveLinear
animations:^ {
myLabel.frame = CGRectMake(0, 20, 320, 50);
}
completion:^(BOOL finished) {
// after 1 second delay, start sliding UILabel out of visible view
[UIView animateWithDuration:0.5 delay:1
options:UIViewAnimationOptionCurveLinear
animations:^ {
myLabel.frame = CGRectMake(0, -50, 320, 50);
}
completion:^(BOOL finished) {
NSLog(#"Done");
[self.view removeFromSuperview]; // remove UILabel from view completely
}];
}];
}
I have a textfield which has a UIDatePicker instead of a keyboard. I also made a toolbar not connected with the datePicker but that just appears when the textfield is tapped. The problem is the animations. The datePicker slides up nicely, but the toolbar just appears before the animation of the datePicker is done. This makes the whole thing look horrible. How would I set the animation to match the datePickers? I have no experience with animations and none of the other posts did any good for me.
EDIT
Based on Tareks answer I was able to set the animation to slide up by doing the following.
First, Setting the toolbar to bottom of screen
pickerBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 480, 320, 44)];
Seconds, Changing the location of the toolbar in the animation
[UIView animateWithDuration:.4 animations:^(void) {
CGRect rect = CGRectMake(0, 224-46, 320, 44);
[pickerBar setFrame:rect];
you can use the inputAccessoryView for that reason.
textField.inputAccessoryView = [[UIToolbar alloc] init...
You can use code below to show your toolBar:
[UIView animateWithDuration:2.0 animations:^(void) {
toolBar.alpha = 1;
}];
EDIT:
toolBar.alpha should be 0.
For Sliding:
It is gonna something like:
[UIView animateWithDuration:2 animations:^{
int newY = yVal; // you can play with this newY.
CGRect frame = toolBar.frame;
frame.origin.y = newY;
toolBar.frame = frame;
}];
I have the following code to shrink a UIView from left to right and remove it from super view after the animation finished:
UIView* coverView = [[UIView alloc]initWithFrame:CGRectMake(100, 100, 300, 50)];
UIImageView* imageView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:#"swipe_rl.png"]];
[imageView setContentMode:UIViewContentModeScaleToFill];
[imageView setFrame:coverView.bounds];
[coverView addSubview:imageView];
[coverView setAutoresizingMask:UIViewAutoresizingFlexibleWidth];
coverView.clipsToBounds = YES;
[self.view addSubview:coverView];
CGRect frame = coverView.frame ;
[UIView animateWithDuration:5.0 animations:^{
[coverView setFrame:CGRectMake(frame.origin.x + frame.size.width, frame.origin.y, 0, frame.size.height)];
} completion:^(BOOL finished){
[coverView removeFromSuperview];
}];
However, the left part of the picture stays and the right part of the picture disappears as you can see in the pictures. For a specific purpose, I want the left part disappears and the right part stays. How can I do it?
For those who want to know why I want this:
- Basically, I want a display-from-left-to-right animation (It means you have a picture and the left of the picture appears first and the the middle and the whole picture appears)
- I do this by adding a second view above the first picture and then shrink the second view from left to right. The first view will then be revealed from left to right.
- Look at http://i1289.photobucket.com/albums/b510/yenmach/right_to_left_zps80b9e9bb.jpg and http://i1289.photobucket.com/albums/b510/yenmach/left_to_right_zps9214dc4a.jpg
//try this.......
CGRect frame = coverView.frame ;
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:5.0];
[UIView setAnimationDelay:0];
[UIView setAnimationCurve:UIViewAnimationCurveLinear];
imageView.frame = CGRectMake(frame.origin.x - 2*frame.size.width,imageView.frame.origin.y, frame.size.width, frame.size.height);
coverView.frame = CGRectMake(frame.origin.x + frame.size.width, frame.origin.y, frame.size.width, frame.size.height);
[UIView commitAnimations];
Not exactly a solution but a workaround, If you are going to be using this with a consistent background (ideally a solid colour) you could just have another view animate overtop of the image view and then remove both once the animation is done.
Try changing UIImageView contentMode property,
[imageView setContentMode: UIViewContentModeRight];
I was having same kind of requirement and this worked fine for me at that time.