I am very new to iPhone/iPad development.
can you please help me create this programmatically. I want to expand/collapse a UIView programmatically.
This expandable/collapsable view will have some text field and lables which should appear and disappear with that view
Suppose you have a UIView instance in the UIViewController class like this:
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(x, y, w1, h1)];
[self.view addSubview:view];
based on the requirement you set the view visibility as I did here .. I am not displaying the view when the controller is loading it's view ..
[view setHidden:YES];
Maintain a flag to check the visibility of the view instance .. lets say isViewVisible is my flag to check the visibility of the view .. I set it to NO in the begning ..
isHelpViewVisible = NO;
and I wrote an action method (viewClicked) here to expand and to collapse the view object , give this action method to a button instance and it will work.
- (void)viewClicked:(id)sender {
if (!isViewVisible) {
isViewVisible = YES;
[view setHidden:NO];
[UIView beginAnimations:#"animationOff" context:NULL];
[UIView setAnimationDuration:1.3f];
[view setFrame:CGRectMake(x, y, w1, h1)];
[UIView commitAnimations];
} else {
isViewVisible = NO;
[view setHidden:NO];
[UIView beginAnimations:#"animationOff" context:NULL];
[UIView setAnimationDuration:1.3f];
[view setFrame:CGRectMake(x, y, width, hight)];
[UIView commitAnimations];
}
}
and add the textfields and labels objects to the view object as subviews and set the animation to those objects as well .. it will work.
Replaces the following from above:
[UIView beginAnimations:#"animationOff" context:NULL];
[UIView setAnimationDuration:1.3f];
[view setFrame:CGRectMake(x, y, w1, h1)];
[UIView commitAnimations];
With the New way of doing animations:
[UIView animateWithDuration:1.3f animations:^{
self.frame = CGRectMake( x1, x2, w1, h1);
} completion:^(BOOL finished) {
// this gives us a nice callback when it finishes the animation :)
}];
To change the size / position of a UIView within its parent just change its frame property:
CGRect newFrame = myView.frame;
newFrame.origin.x = newX;
newFrame.origin.y = newY;
newFrame.size.width = newWidth;
newFrame.size.height = newHeight;
myView.frame = newFrame;
You can try this
CGRect frame = [currentView frame];
frame.size.width = 999;//Some value
frame.size.height = 444;//some value
[currentView setFrame:frame];
You can follow this whenever you want to increase/decrease view size
Related
I have an application in which I had a button on the navigationbar.
When clicking on that I need to add a subview to the self.view.
DemoViewController *demoViewController1 = [[DemoViewController alloc] initWithNibName:#"DemoViewController" bundle:nil];
CGRect frame=demoViewController1.view.frame;
frame.origin.y = -300;
[self.view addSubview:demoViewController1.view];
[UIView animateWithDuration:0.5
animations:^{
CGRect frame1 = frame;
frame1.origin.y = 0;
demoViewController1.view.frame = frame1;
}];
I was tried by setting the frame origin y of the adding view(it is of another view controller).to some negetive value and by clicking bring it to 0.but it doesnt have that drop down effect.
I need to add the view with an animation like drop down view. and when pressed again on the button need to remove also like this.
Can anybody help me on this?
You add the view as subview with a frame that is not on the screen (e.g. negative y coordinate) and modify the frame animated:
MyView *myView = [[MyView alloc] initWithFrame:CGRectMake(50, -200, 200, 200)];
[self.view addSubview:myView];
[UIView animateWithDuration:0.3
animations:^{
CGRect frame = myView.frame;
frame.origin.y = 0;
myView.frame = frame;
}];
And the code for removal:
[UIView animateWithDuration:0.3
animations:^{
CGRect frame = myView.frame;
frame.origin.y = -1 * frame.size.height;
myView.frame = frame;
}
completion:^(BOOL finished) {
[myView removeFromSuperview];
}];
Edit:
Replace your code with this:
DemoViewController *demoViewController1 = [[DemoViewController alloc] initWithNibName:#"DemoViewController" bundle:nil];
CGRect frame=demoViewController1.view.frame;
frame.origin.y = -300;
demoViewController1.view.frame = frame; // You forgot this line
[self.view addSubview:demoViewController1.view];
[UIView animateWithDuration:0.5
animations:^{
CGRect frame1 = demoViewController1.view.frame;
frame1.origin.y = 0;
demoViewController1.view.frame = frame1;
}];
First keep ur view at bottom.
when it's clicked first time
do this
[UIView animateWithDuration:0.3 animations:^{
//keep points that's in a screen
self.view.center = CGPointMake(x,y,width,height);
}];
when it's clicked second time
give points below the visible screen
[UIView animateWithDuration:0.3 animations:^{
//keep points that's in a screen
self.view.center = CGPointMake(x,y,width,height);
}];
Let me know if you find a better way than this.
[self.yourView setFrame:setYourInitialFrame];
[UIView animateWithDuration: 1.00 animations:^{
[self.yourView setFrame:setYourFinalFrame];
}];
I have a custom uiview that i am trying to update the frame size. I do it like this in a method once it is clicked. The method is called, and the frame value changes, however on the screen nothing happens!
if (!touched) {
GameBox *box = (GameBox *)[self.view viewWithTag:40];
[box setFrame:CGRectMake(20, 20, 100, 73)];
NSLog(#"%f", box.frame.origin.x);
markButton.enabled = NO;
guessButton.enabled = NO;
[self.view reloadInputViews];
NSLog(#"The action bar should now be hidden");
}
else if (touched) {
guessButton.enabled = YES;
markButton.enabled = YES;
[self.view reloadInputViews];
NSLog(#"The action bar should now be visible");
}
I guess you have hooked self.view to UIView in Interface Builder.
In order to change UIView frame, in Interface Builder go to File Inspector, and uncheck Use Autolayout, then in the code change the frame.
Hope this helps.
You need to set adjust the frame in the viewDidAppear (not viewDidLoad).
- (void) viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
CGRect frame = self.tableView.frame;
frame.origin.y += 100.0;
frame.size.height -= 100.0;
self.tableView.frame = frame;
}
Apparently this has something to do with table views within navigation controllers.
It is because of Auto Layout, however you could do it after Auto Layout done its work or change constraints of it. If you want to do it after auto layout add following.
- (void)viewDidAppear:(BOOL)animated {
dispatch_async(dispatch_get_main_queue(), ^{
box.frame = CGRectMake(20, 20, 100, 73)];
});
[self.view reloadInputViews] is generally used for FirstResponders. I Don't have much of an idea about your customview, but I think for just settings the frame you can use:
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.5];
[UIView setAnimationDelay:1.0];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
viewFrame.frame=frame;//Frame Defined by you
[UIView commitAnimations];
can give better solution if i get a look at your custom view.
I have a UIButton somewhere on my view. On touch event of button I making a UIView appear. The UIAnimation I have used make the view appear from top of window. But I want it to appear from button.frame.origin.y . Before touching the button the view is not visible. On touching the button view should start appearing from above position.
Here is the code :
-(IBAction) ShowInfowView:(id)sender{
CGRect rect = viewInfo.frame;
rect.origin.y = rect.size.height - rect.size.height+58.0;
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.70];
[UIView setAnimationDelay:0.0];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
viewInfo.frame = rect;
[UIView commitAnimations];
}
This is how I am hiding the view again :
-(IBAction) HideInfoView:(id)sender{
CGRect rect = viewInfo.frame;
rect.origin.y = -rect.size.height;
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.70];
[UIView setAnimationDelay:0.0];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
viewInfo.frame = rect;
[UIView commitAnimations];
}
In viewDidLoad I am doing the following :
CGRect rect = viewInfo.frame;
rect.origin.y = -rect.size.height;
viewInfo.frame = rect;
UPDATE:
Please see this example. Here view is appearing from top of screen. I want it to appear from button y axis. For that matter please consider button y position a bit upwards.
So you want a slide-in effect, but not from the top of the screen, just some arbitrary value?
One way to do it:
1) You should create a view that has the dimensions and position of your desired view AFTER animation finishes, we'll call it baseview.
2) Set this baseview property clipsToBounds to YES. This will make all subviews that are outside of the baseview's frame invisible.
3) Add your animating view as a subview of the baseview, but set the frame so it is invisible (by plcacing it above the baseview):
frame = CGRectMake(0, -AnimViewHeight, AnimViewWidth, AnimViewHeight);
4) Animate the animview frame:
//put this inside of an animation block
AnimView.frame = CGRectMake(0, 0, AnimViewWidth, AnimViewHeight);
EDIT:
Example:
//define the tags so we can easily access the views later
#define BASEVIEW_TAG 100
#define INFOVIEW_TAG 101
- (void) showInfo
{
//replace the following lines with preparing your real info view
UIView * infoView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
[infoView setBackgroundColor: [UIColor yellowColor]];
[infoView setTag: INFOVIEW_TAG];
//this is the frame of the info view AFTER the animation finishes (again, replace with real values)
CGRect targetframe = CGRectMake(100, 100, 100, 100);
//create an invisible baseview
UIView * baseview = [[UIView alloc] initWithFrame:targetframe];
[baseview setBackgroundColor: [UIColor clearColor]];
[baseview setClipsToBounds: YES]; //so it cuts everything outside of its bounds
[baseview setTag: BASEVIEW_TAG];
//add the nfoview to the baseview, and set it above the bounds frame
[baseview addSubview: infoView];
[infoView setFrame:CGRectMake(0, -infoView.bounds.size.height,
infoView.bounds.size.width, infoView.bounds.size.height)];
//add the baseview to the main view
[self.view addSubview: baseview];
//slide the view in
[UIView animateWithDuration: 1.0 animations:^{
[infoView setFrame: baseview.bounds];
}];
//if not using ARC, release the views
[infoview release];
[baseview release];
}
- (void) hideinfo
{
//get the views
UIView * baseView = [self.view viewWithTag: BASEVIEW_TAG];
UIView * infoView = [baseView viewWithTag: INFOVIEW_TAG];
//target frame for infoview - slide up
CGRect out_frame = CGRectMake(0, -infoView.bounds.size.height,
infoView.bounds.size.width, infoView.bounds.size.height);
//animate slide out
[UIView animateWithDuration:1.0
animations:^{
[infoView setFrame: out_frame];
} completion:^(BOOL finished) {
[baseView removeFromSuperview];
}];
}
I have done exactly what you're trying in my recent project.
The following steps should make this work:
1. In your viewDidLoad: you init your viewToFadeIn like this:
viewToFadeIn = [[UIView alloc] initWithFrame:CGRectMake(20,self.view.frame.size.height+10, self.view.frame.size.widh-40, 200)];
//its important to initalize it outside your view
//your customization of this view
[self.view addSubview:viewToFadeIn];
2.your ShowInfowView: Method should look like this:
` -(IBAction) ShowInfowView:(id)sender{
[UIView beginAnimations:#"fadeIn" context:NULL];
[UIView setAnimationDuration:0.25];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:#selector(animationFinished:finished:context:)];
viewToFadeIn.transform = CGAffineTransformMakeTranslation(0, -290);
//290 is in my case, try a little for your correct value
[UIView commitAnimations];
}
3.yourHideInfoView:` Method looks like this
-(IBAction) HideInfoView:(id)sender{
[UIView beginAnimations:#"fadeOut" context:NULL];
[UIView setAnimationDuration:0.25];
[UIView setAnimationDelegate:self];
viewToFadeIn.transform = CGAffineTransformMakeTranslation(0, 0);
[UIView commitAnimations];
}
EDIT:
4. animationFinishedMethod:
- (void)animationFinished:(NSString *)animationID finished:(BOOL)finished context:(void *)context{
if ([animationID isEqual:#"fadeIn"]) {
//Do stuff
}
if ([animationID isEqual:#"fadeOut"]) {
//Do stuff
}
}
SEE THIS
This should do the trick. Good luck
Your problem is not clear (for me).
What is this?
rect.origin.y = rect.size.height - rect.size.height+58.0;
Is 58 origin of your UIButton?
You should use sender.frame etc
Use blocks to animate like this
[UIView animateWithDuration:0.5f animations:^{
// Animation here
} completion:^(BOOL finished) {
// onComplete
}];
- (void) slideIn{
//This assumes the view and the button are in the same superview, if they're not, you'll need to convert the rects
//I'm calling the animated view: view, and the button: button...easy enough
view.clipToBounds = YES;
CGRect buttonRect = button.frame;
CGRect viewRect = CGRectMake(buttonRect.origin.x, buttonRect.origin.y + buttonRect.size.height, view.bounds.size.width, 0);
CGFloat intendedViewHeight = view.height;
view.frame = viewRect;
viewRect.size.height = intendedViewHeight;
[UIView animateWithDuration:.75 delay:0.0f options:UIViewAnimationOptionCurveEaseOut animations:^{
view.frame = viewRect;
}completion:nil];
}
This will cause the the view to appear to slide out from under the button. To slide the view back in, you just reverse the animations. If you wish to slide it up from the button, you'll need to make sure your starting 'y' is the 'y' value of the button (rather than the 'y' + 'height') and animate both the height and y values of the view that needs animating.
The main UIView contains two subviews - UIView_1 and UIView_2.
In the UIView_2, there is a button to show or hide the UIView_1.
For example, when a user touches the button to show the UIView_1, then UIView_1 will slide down and UIView_2 will push downwards with transition.
I have very little knowledge in animation. Can someone show me some sample code for reference?
Should I use CGAffineTransformMakeTranslation?
Thanks.
You don't need anything so complex. Just change the view's frame size.
NSTimeInterval animationDuration = /* determine length of animation */;
CGRect newFrameSize = /* determine what the frame size should be */;
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:animationDuration];
theViewToChange.frame = newFrameSize;
[UIView commitAnimations];
Simply Hide/show with fadein/out effect
`
/To Show/
sliderView.hidden = NO;
sliderView.alpha = 0.1;
[UIView animateWithDuration:0.25 animations:^{
sliderView.alpha = 1.0f;
} completion:^(BOOL finished) {
// do some
}];
/To hide/
[UIView animateWithDuration:0.25 animations:^{
sliderView.frame = CGRectMake(130, 30, 0, 0);
[sliderView setAlpha:0.1f];
} completion:^(BOOL finished) {
sliderView.hidden = YES;
}];
`
It depends on what you want to do with UIView_2.
Place UIView_1 below UIView_2 in Interface Builder.
Size UIView_2 to take up all the space below the UINavigationBar.
Use the following code to either resize (using uiview2_resized_rect) the frame for UIView_2, or translate/move the frame for UIView_2 (using uiview2_translated_rect ):
CGRect uiview1_original_rect = UIView_1.frame;
CGRect uiview2_original_rect = UIView_2.frame;
CGRect uiview2_translated_rect = CGRectMake(uiview2_original_rect.origin.x,
uiview2_original_rect.origin.y+uiview1_original_rect.size.height,
uiview2_original_rect.size.width,
uiview2_original_rect.size.height);
CGRect uiview2_resized_rect = CGRectMake(uiview2_original_rect.origin.x,
uiview2_original_rect.origin.y+uiview1_original_rect.size.height,
uiview2_original_rect.size.width,
uiview2_original_rect.size.height-uiview1_original_rect.size.height);
[UIView animateWithDuration:0.300 delay:0.0
options:UIViewAnimationOptionCurveEaseInOut|UIViewAnimationOptionBeginFromCurrentState
animations:^{
//uncomment this and comment out the other if you want to move UIView_2 down to show UIView_1
//UIView_2.frame = uiview2_translated_rect;
UIView_2.frame = uiview2_resized_rect;
} completion:^(BOOL finished) {
}];
I've a serious problem, and I cannot solve it by myself. I've spent hours searching the documentations, programming guides as well as developer forums and stack overflow.
The problem is I want to display a picker view in UITableViewController. I have a screen that has multiple text fields allowing me to search by title/author/keywords... and I'd also like to specify the minimum and maximum dates, using the UIDatePicker (or UIPickerView - to specify "last 5 days" for example).
I want to use UITableViewController because it saves me a lot of time resizing the table while the keyboard pops up when user presses the text field. In fact I've never been able to reproduce this animation using UIViewController and listening to textfields' delegate. It was almost perfect but there were some visible disadvantages comparing to the behaviour of table if displayed using UITableViewController.
So everything's fine when there are only textfields. But what about the date fileds? I want to make it exactly like the Contacts.app by Apple when I want to add a new contact and specify the birthday. In that application the Date Picker is shown, the table is resized, switching between email/phone field and birthday works great. I could believe that the date picker is in this case the keyboard but not for typing phone/email but date because it slides in/out just like a keyboard and is replaced instantly when the keyboard/picker is opened.
How did thet accomplished it?
Or where can I find the easiest solution to reproduce it. I believe it cannot be as hard because it's very common situation.
Regards
Chris
All of that is pointless. We should deal with the inputView and inputAccessoryView, where inputView should has the picker and inputAccessoryView the toolbar.
You're going to have to create a UIWindow object, then add a view. The windowLevel property makes it higher than the statusBar, which you may or may not want.
//statusWindow is a UIWindow ivar declared in the header
//pickerShowing is declared as a BOOL in header
//release and removeFromSuperview is done in the animation delegate methods
//ANIMATE IN
-(void)slideIn {
CGRect pickerFrame = CGRectMake(0.0f, 0.0f, 320.0f, 200.0f); //guessing on height
UIView *viewForPicker = [[UIView alloc] init];
UIPickerView *aPicker = [[UIPickerView alloc] init]; //don't forget to set delegate and dataSource
viewForPicker.frame = pickerFrame;
statusWindow = [[UIWindow alloc] initWithFrame:CGRectMake(0.0, 480.0, 320.0f, 200.0f)];//guessing on height, y value is off the screen (bottom)
statusWindow.windowLevel = UIWindowLevelStatusBar;
statusWindow.hidden = NO;
statusWindow.backgroundColor = [UIColor clearColor];
[statusWindow makeKeyAndVisible];
[viewForPicker addSubview:aPicker];
[statusWindow addSubview:viewForPicker];
[viewForPicker release];
[aPicker release];
[UIView beginAnimations:#"slideUp" context:nil];
[UIView setAnimationDuration:0.3];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:#selector(animationFinished:)];
statusWindow.frame = CGRectMake(0.0f, 200.0f, 320.0f, 200.0f); //guessing on y and height values, change them to suit needs
[UIView commitAnimations];
pickerShowing = YES;
}
//ANIMATE out:
-(void)slideOut {
[UIView beginAnimations:#"slideDown" context:nil];
[UIView setAnimationDuration:0.3];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:#selector(animationFinished:)];
statusWindow.frame = CGRectMake(0.0f, 480.0f, 320.0f, 200.0f);
[UIView commitAnimations];
pickerShowing = NO;
}
-(void)animationFinished:(NSString *)name {
if ([name isEqualToString:#"slideDown"]) {
[statusWindow release];
}
}
If you want to slide in/out the picker view, you can use Core Animation.
Simplest snippet:
// Slide picker view in
[UIView beginAnimations: #"SlideIn" context: nil];
myPickerView.frame = upFrame;
[UIView commitAnimations];
// ...
// Slide picker view out
[UIView beginAnimations: #"SlideOut" context: nil];
myPickerView.frame = downFrame;
[UIView commitAnimations];
upFrame and downFrame are CGRect you make with the right position for your picker view on screen and off screen respectively.
Hope this helps.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *targetCell = [tableView cellForRowAtIndexPath:indexPath];
self.pickerView.date = [self.dateFormatter dateFromString:targetCell.detailTextLabel.text];
// check if our date picker is already on screen
if (self.pickerView.superview == nil)
{
[self.view.window addSubview: self.pickerView];
// size up the picker view to our screen and compute the start/end frame origin for our slide up animation
//
// compute the start frame
CGRect screenRect = [[UIScreen mainScreen] applicationFrame];
CGSize pickerSize = [self.pickerView sizeThatFits:CGSizeZero];
CGRect startRect = CGRectMake(0.0,
screenRect.origin.y + screenRect.size.height,
pickerSize.width, pickerSize.height);
self.pickerView.frame = startRect;
// compute the end frame
CGRect pickerRect = CGRectMake(0.0,
screenRect.origin.y + screenRect.size.height - pickerSize.height,
pickerSize.width,
pickerSize.height);
// start the slide up animation
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.3];
// we need to perform some post operations after the animation is complete
[UIView setAnimationDelegate:self];
self.pickerView.frame = pickerRect;
// shrink the table vertical size to make room for the date picker
CGRect newFrame = self.tableView.frame;
newFrame.size.height -= self.pickerView.frame.size.height;
self.tableView.frame = newFrame;
[UIView commitAnimations];
// add the "Done" button to the nav bar
self.navigationItem.rightBarButtonItem = self.doneButton;
}
}
- (void)slideDownDidStop
{
// the date picker has finished sliding downwards, so remove it
[self.pickerView removeFromSuperview];
}
- (IBAction)dateAction:(id)sender
{
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
cell.detailTextLabel.text = [self.dateFormatter stringFromDate:self.pickerView.date];
}
- (IBAction)doneAction:(id)sender
{
CGRect screenRect = [[UIScreen mainScreen] applicationFrame];
CGRect endFrame = self.pickerView.frame;
endFrame.origin.y = screenRect.origin.y + screenRect.size.height;
// start the slide down animation
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.3];
// we need to perform some post operations after the animation is complete
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:#selector(slideDownDidStop)];
self.pickerView.frame = endFrame;
[UIView commitAnimations];
// grow the table back again in vertical size to make room for the date picker
CGRect newFrame = self.tableView.frame;
newFrame.size.height += self.pickerView.frame.size.height;
self.tableView.frame = newFrame;
// remove the "Done" button in the nav bar
self.navigationItem.rightBarButtonItem = nil;
// deselect the current table row
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
[self.tableView deselectRowAtIndexPath:indexPath animated:YES];
}
You can download a full working sample app from Apple demonstrating just this.
http://developer.apple.com/library/ios/#samplecode/DateCell/Introduction/Intro.html