while presenting the search controller i am setting the showScopeBar property to hide or show the scope bar
- (void)willPresentSearchController:(UISearchController *)searchController {
// do something before the search controller is presented
NSMutableArray *scopeArray = #[#"All"].mutableCopy;
UISearchBar *searchBar =_searchController.searchBar;
if (![labelDepartmentSelection.text isEqualToString:#"Department"]) {
[scopeArray addObject:#"Department"];
}
if (![labelJobSelection.text isEqualToString:#"Job"]) {
[scopeArray addObject:#"Job"];
}
searchBar.scopeButtonTitles = scopeArray;
searchBar.showsScopeBar = scopeArray.count>1;
[searchBar layoutIfNeeded];
NSArray *subviews = searchBar.subviews;
if([[UIDevice currentDevice].systemVersion floatValue]>=7.0) {
//Get search bar with scope bar to reappear after search keyboard is dismissed
UIView *scopeBar = [subviews.firstObject subviews].firstObject;
[scopeBar setHidden:NO];
CGRect frame = scopeBar.frame;
frame.origin.y = frame.origin.y = 64.0;
scopeBar.frame = frame;
}
[searchBar layoutSubviews];
[searchBar sizeToFit];
[serviceOptionTableView setContentInset:UIEdgeInsetsMake(scopeArray.count>1?44:0, 0, 0, 0)];
serviceOptionTableView.tableHeaderView = searchController.searchBar;
}
and when i simply hide and show the scope bar base on the scope titles i want it giet distorted
here is the case for this
- (void)willPresentSearchController:(UISearchController *)searchController {
// do something before the search controller is presented
NSMutableArray *scopeArray = #\[#"All"\].mutableCopy;
UISearchBar *searchBar =_searchController.searchBar;
if (!\[labelDepartmentSelection.text isEqualToString:#"Department"\]) {
\[scopeArray addObject:#"Department"\];
}
if (!\[labelJobSelection.text isEqualToString:#"Job"\]) {
\[scopeArray addObject:#"Job"\];
}
searchBar.scopeButtonTitles = scopeArray;
searchBar.showsScopeBar = scopeArray.count>1;
\[serviceOptionTableView setContentInset:UIEdgeInsetsMake(scopeArray.count>1?44:0, 0, 0, 0)\];
}
this is the image of case 2
The issue should fix itself if you remove the line:
searchBar.showsScopeBar = scopeArray.count>1;
Setting the showScopeBar property has a weird effect for some reason. Removing it allows the default animation behaviour without any issues.
Related
how can I add a UISwitch to a specific UIScrollView? As I guess it can be done with a tag, but I am having difficulties.
EDIT: The problem was solved in the usual way, lol
My example code with UIScrollView and UISwitch:
#implementation NSPage {
UIScrollView *scrolled;
UISwitch *switchPage;
NSInteger *keyS;
}
NSPage *page = [[NSPage alloc]init];
Here i am creating a UIScrollView and UISwitch:
-(id)initPage:(NSString *)titleScroll keyScroll:(NSInteger)keyScroll_ {
keyS = keyScroll_;
scrolled = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, 180, 110)];
scrolled.tag = keyS;
scrolled.backgroundColor = [UIColor grayColor];
[window addSubview:scrolled];
}
//get scroll tag
-(NSInteger)getScrollKey {
return scrolled.tag = keyS;
}
//UISwitch
-(id)initSwitch:(NSString *)title_ keySwitch:(NSInteger)keySwitch_ {
scrollSwitch += 40;
switch_ = [[UISwitch alloc]initWithFrame:CGRectMake(15, scrollSwitch - 40, 40, 40)];
switch_.tag = keySwitch_;
if([self getScrollKey] == switch_.tag) {
[scrolled addSubview:switch_];
}
}
#end
Everything seemed to be fine, but when I add a scrolls and switches, then my UISwitch is not displayed:
page = [[NSPage alloc]initPage:#"test page" keyScroll:256];
page = [[NSPage alloc]initSwitch:#"test" keySwitch:256];
What could be my mistake, how can I add a UISwitch to a specific UIScrollView? I'm a beginner, Thanks for the help anyway
if([self getScrollKey] == switch_.tag) {
This line does nothing take it out
Basically, this is what happens when I click on the left menu button.
http://i.stack.imgur.com/g7uq6.png
I want it to appear under the status bar and not to overlap it.
Here's the code:
HomeViewController.m
-(void)menuBarButtonItemClick{
mJUserAccountMenuViewController = nil;
mJUserAccountMenuViewController = [[MJUserAccountMenuViewController alloc] initWithNibName:#"MJUserAccountMenuViewController" bundle:nil];
mJUserAccountMenuViewController.delegate = self;
[self presentPopupViewController:mJUserAccountMenuViewController animationType:MJPopupViewAnimationSlideLeftRight];
}
mJUSerAccountMenuViewController.m
- (void)viewDidLoad
{
[super viewDidLoad];
leftMenuArrayy = [StaticDataCollection getSharedInstance].accountMenuArray;
backTOHomelabl.font = FONT_APP_DEFAULT_FONT;
backTOHomelabl.textColor = COLOR_WHITE_COLOR;
if (IS_IPHONE_5_SCREEN) {
[self.view setFrame:CGRectMake(0, 0, 250, 568)];
} else {
[self.view setFrame:CGRectMake(0, 0, 250, 480)];
}
}
If you are using storyboard and AutoLayout, you can set the top of menu equals top layout guide.
If you're using xib, you can set iOS 6/7 Delta to plus or minus y offset 20(Status bar's height).
If you set layout by code, you have to check the version of iOS. For example:
if([[[UIDevice currentDevice] systemVersion] integerValue] >= 7)
{
// set the subviews' offset +20px(statusBar's height)
}
I want to toggle the visibility of the status bar on tap, just like it does in the Photos app.
Prior to iOS 7, this code worked well:
-(void)setStatusBarIsHidden:(BOOL)statusBarIsHidden {
_statusBarIsHidden = statusBarIsHidden;
if (statusBarIsHidden == YES) {
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationFade];
}else{
[[UIApplication sharedApplication] setStatusBarHidden:NO withAnimation:UIStatusBarAnimationFade];
}
}
But I can't get it to work in iOS 7. All the answers that I found only offer suggestions for permanently hiding the bar but not toggling.
Yet, there must be a way since Photos does it.
By default on iOS 7 or above, to hide the status bar for a specific view controller, do the following:
if the view controller you want to hide the status bar with is being presented modally and the modalPresentationStyle is not UIModalPresentationFullScreen, manually set modalPresentationCapturesStatusBarAppearance to YES on the presented controller before it is presented (e.g. in -presentViewController:animated:completion or -prepareForSegue: if you're using storyboards)
override -prefersStatusBarHidden in the presented controller and return an appropriate value
call setNeedsStatusBarAppearanceUpdate on the presented controller
If you want to animate it's appearance or disappearance, do step three within an animation block:
[UIView animateWithDuration:0.33 animations:^{
[self setNeedsStatusBarAppearanceUpdate];
}];
You can also set the style of animation by returning an appropriate UIStatusBarAnimation value from -preferredStatusBarUpdateAnimation in the presented controller.
First set View controller-based status bar appearance in Info.plist to YES
This Swift Example shows how to toggle the StatusBar with an Animation, after pressing a Button.
import UIKit
class ToggleStatusBarViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
override func prefersStatusBarHidden() -> Bool {
return !UIApplication.sharedApplication().statusBarHidden
}
override func preferredStatusBarUpdateAnimation() -> UIStatusBarAnimation {
return UIStatusBarAnimation.Slide
}
#IBAction func toggleStatusBar(sender: UIButton) {
UIView.animateWithDuration(0.5,
animations: {
self.setNeedsStatusBarAppearanceUpdate()
})
}
}
I was able to simplify #Jon's answer and still get behavior indistinguishable from the Photos app on iOS 7. It looks like the delayed update when showing isn't necessary.
- (IBAction)toggleUI:(id)sender {
self.hidesUI = !self.hidesUI;
CGRect barFrame = self.navigationController.navigationBar.frame;
CGFloat alpha = (self.hidesUI) ? 0.0 : 1.0;
[UIView animateWithDuration:0.33 animations:^{
[self setNeedsStatusBarAppearanceUpdate];
self.navigationController.navigationBar.alpha = alpha;
}];
self.navigationController.navigationBar.frame = CGRectZero;
self.navigationController.navigationBar.frame = barFrame;
}
- (BOOL)prefersStatusBarHidden {
return self.hidesUI;
}
This might be considered a bit of a hack but it's the closest I've come to reproducing the effect. There's still one minor issue. When fading out, you can see the navigation bar being resized from the top. It's subtle enough but still not a perfect fade. If anyone knows how to fix it, let me know!
- (BOOL)prefersStatusBarHidden {
if (_controlsAreHidden == YES)
return YES;
else
return NO;
}
- (UIStatusBarAnimation)preferredStatusBarUpdateAnimation {
return UIStatusBarAnimationFade;
}
-(void)setControlsAreHidden:(BOOL)controlsAreHidden {
_controlsAreHidden = controlsAreHidden;
if (controlsAreHidden == YES) {
// fade out
//
CGRect barFrame = self.navigationController.navigationBar.frame;
[UIView animateWithDuration:0.3 animations:^ {
[self setNeedsStatusBarAppearanceUpdate];
self.navigationController.navigationBar.alpha = 0;
}];
self.navigationController.navigationBar.frame = CGRectMake(0, 20, barFrame.size.width, 44);
}else{
// fade in
//
CGRect barFrame = self.navigationController.navigationBar.frame;
self.navigationController.navigationBar.frame = CGRectMake(0, 20, barFrame.size.width, 64);
[UIView animateWithDuration:0.3 animations:^ {
[self setNeedsStatusBarAppearanceUpdate];
self.navigationController.navigationBar.alpha = 1;
}];
}
}
This code works perfectly fine:
-(void)setControlsAreHidden:(BOOL)controlsAreHidden {
if (_controlsAreHidden == controlsAreHidden)
return;
_controlsAreHidden = controlsAreHidden;
UINavigationBar * navigationBar = self.navigationController.navigationBar;
if (controlsAreHidden == YES) {
// fade out
//
CGRect barFrame = self.navigationController.navigationBar.frame;
[UIView animateWithDuration:0.3 animations:^ {
[self setNeedsStatusBarAppearanceUpdate];
self.navigationController.navigationBar.alpha = 0;
}];
self.navigationController.navigationBar.frame = CGRectZero;
self.navigationController.navigationBar.frame = CGRectMake(0, 20, barFrame.size.width, 44);
} else {
// fade in
//
[UIView animateWithDuration:UINavigationControllerHideShowBarDuration animations:^ {
[self setNeedsStatusBarAppearanceUpdate];
}];
double delayInSeconds = 0.01;
dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));
dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
[self.navigationController setNavigationBarHidden:NO animated:NO];
navigationBar.alpha = 0;
[UIView animateWithDuration:UINavigationControllerHideShowBarDuration animations:^ {
navigationBar.alpha = 1;
}];
});
}
}
Actually there is now need to mess with navigation bar frames. You can achieve smooth animation just by using 2 separate animation blocks. Something like this should work just fine.
#property (nonatomic, assign) BOOL controlsShouldBeHidden;
...
- (void)setControlsHidden:(BOOL)hidden animated:(BOOL)animated {
if (self.controlsShouldBeHidden == hidden) {
return;
}
self.controlsShouldBeHidden = hidden;
NSTimeInterval duration = animated ? 0.3 : 0.0;
[UIView animateWithDuration:duration animations:^(void) {
[self setNeedsStatusBarAppearanceUpdate];
}];
[UIView animateWithDuration:duration animations:^(void) {
CGFloat alpha = hidden ? 0 : 1;
[self.navigationController.navigationBar setAlpha:alpha];
}];
}
- (BOOL)prefersStatusBarHidden {
return self.controlsShouldBeHidden;
}
For compatibility with iOS 6 just make sure to check [self respondsToSelector:#selector(setNeedsStatusBarAppearanceUpdate)]
The way to resolve this depends on the value of the "View controller-based status bar appearance" setting in your app's plist.
If "View controller-based status bar appearance" is NO in your plist, then this code should work:
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationFade];
If "View controller-based status bar appearance" is on, in your view controllers, add this method:
- (BOOL) prefersStatusBarHidden {
// I've hardcoded to YES here, but you can return a dynamic value to meet your needs for toggling
return YES;
}
For toggling, when you want to change whether the status bar is hidden/shown based on the value of the above method, your view controller can call the setNeedsStatusBarAppearanceUpdate method.
To correct this issue with navigation bar sliding up when fading, you should add the following code:
self.navigationController.navigationBar.frame = CGRectZero;
into your "fade in" section before the following code line:
self.navigationController.navigationBar.frame = CGRectMake(0, 20, barFrame.size.width, 64);
This is necessary because the frame is the same and setting the same frame will be ignored and will not stop the navigation bar from sliding. Therefore you need to change the frame to something different and then set it again to the correct frame to trigger the change.
I'm using the following code to hide a view and the space taken by the view based on a condition in viewWillAppear:
- (void)viewWillAppear:(BOOL)animated {
Data* data = [Data shared];
if (data.something == 0) {
CGRect frame = self.tableView.tableHeaderView.frame;
frame.size.height = 0;
self.tableView.tableHeaderView.frame = frame;
self.tableView.tableHeaderView.hidden = YES;
} else {
CGRect frame = self.tableView.tableHeaderView.frame;
frame.size.height = 44;
self.tableView.tableHeaderView.frame = frame;
self.tableView.tableHeaderView.hidden = NO;
}
}
The above code works, but I'm pretty sure that is not the right way to do that. I tried to set the tableHeaderView to nil, but once the code is called, the headerView is gone until the UITableView is destroyed (I think I can fix it using a IBOutlet to the tableHeader, but doesn't sounds right too.
UPDATE1: another try, but the code doesn't work:
- (CGFloat)tableView:(UITableView*)tableView heightForHeaderInSection:(NSInteger)section {
self.tableView.tableHeaderView.hidden = YES;
return 0;
}
The data source method tableView:heightForHeaderInSection: actually has nothing to do with the view that is associated with the table view's tableViewHeader property. There are two different types of headers here, the one header at the top of the tableView, in which can be placed things like a search bar, and the multiple headers that can be made to occur one per section within the table view.
To my knowledge, the tableViewHeader view is typically configured in the nib file, and I don't know that the table view calls any data source methods that allow any configuration for it, so you would have to do it manually. Frankly, if your code works, that would be a good way to do it. Hiding it would make the table view still act as if it's there...removing it entirely makes it so you can't get it back because it gets deallocated.
(However, as you said, you could use an IBOutlet pointing to the header view, as long as you make it a strong reference, and then you could somehow reinsert it into the table later. ...Hm, although the mechanics of how you add a view into the table view's scroll view, and position it correctly, is probably just annoying.)
My only suggestion would be animating the frame height to zero so you get a nice transition effect, something like animateWithDuration. But yeah, I would say you have the best method figured out already.
EDIT:
Code, you say? I take that as a challenge :)
- (void)setTableViewHeaderHidden:(BOOL)hide
{
// Don't want to muck things up if we are mid an animation.
if (self.isAnimatingHeader) {
return;
}
// This is our IBOutlet property, I am just saving a bit of typing.
UIView *theHeader = self.theHeaderView;
if (hide) {
// Save the original height into the tag, should only be done once.
if (!theHeader.tag) {
theHeader.tag = theHeader.frame.size.height;
}
// Transform and hide
if (theHeader.frame.size.height > 0) {
self.isAnimatingHeader = YES;
// New frame...
CGRect frame = theHeader.frame;
frame.size.height = 0;
// Figure out some offsets here so we prevent jumping...
CGPoint originalOffset = self.tableView.contentOffset;
CGPoint animOffset = originalOffset;
animOffset.y += MAX(0, theHeader.tag - animOffset.y);
CGPoint newOffset = originalOffset;
newOffset.y = MAX(0, newOffset.y - theHeader.tag);
// Perform the animation
[UIView animateWithDuration:0.35
delay:0.0
options: UIViewAnimationCurveEaseOut
animations:^{
theHeader.frame = frame;
self.tableView.contentOffset = animOffset;
}
completion:^(BOOL finished){
if (finished) {
// Hide the header
self.tableView.tableHeaderView = nil;
theHeader.hidden = YES;
// Shift the content offset so we don't get a jump
self.tableView.contentOffset = newOffset;
// Done animating.
self.isAnimatingHeader = NO;
}
}
];
}
} else {
// Show and transform
if (theHeader.frame.size.height < theHeader.tag) {
self.isAnimatingHeader = YES;
// Set the frame to the original before we transform, so that the tableview corrects the cell positions when we re-add it.
CGRect originalFrame = theHeader.frame;
originalFrame.size.height = theHeader.tag;
theHeader.frame = originalFrame;
// Show before we transform so that you can see it happen
self.tableView.tableHeaderView = theHeader;
theHeader.hidden = NO;
// Figure out some offsets so we don't get the table jumping...
CGPoint originalOffset = self.tableView.contentOffset;
CGPoint startOffset = originalOffset;
startOffset.y += theHeader.tag;
self.tableView.contentOffset = startOffset; // Correct for the view insertion right off the bat
// Now, I don't know if you want the top header to animate in or not. If you think about it, you only *need* to animate the header *out* because the user might be looking at it. I figure only animate it in if the user is already scrolled to the top, but hey, this is open to customization and personal preference.
if (self.animateInTopHeader && originalOffset.y == 0) {
CGPoint animOffset = originalOffset;
// Perform the animation
[UIView animateWithDuration:0.35
delay:0.0
options: UIViewAnimationCurveEaseIn
animations:^{
self.tableView.contentOffset = animOffset;
}
completion:^(BOOL finished){
// Done animating.
self.isAnimatingHeader = NO;
}
];
} else {
self.isAnimatingHeader = NO;
}
}
}
}
Built this in the table view template that comes with Xcode. Just to throw it together I used a UILongPressGestureRecognizer with the selector outlet pointing to this method:
- (IBAction)longPress:(UIGestureRecognizer *)sender
{
if (sender.state != UIGestureRecognizerStateBegan) {
return;
}
if (self.hidingHeader) {
self.hidingHeader = NO;
[self setTableViewHeaderHidden:NO];
} else {
self.hidingHeader = YES;
[self setTableViewHeaderHidden:YES];
}
}
And, I added these to my header:
#property (strong, nonatomic) IBOutlet UIView *theHeaderView;
#property (nonatomic) BOOL hidingHeader;
#property (nonatomic) BOOL isAnimatingHeader;
#property (nonatomic) BOOL animateInTopHeader;
- (IBAction)longPress:(id)sender;
Anyway, it works great. What I did discover is that you definitely have to nil out the table view's reference to the header view or it doesn't go away, and the table view will shift the cells' position based on the height of the frame of the header when it is assigned back into its header property. Additionally, you do have to maintain a strong reference via your IBOutlet to the header or it gets thrown away when you nil out the table view's reference to it.
Cheers.
Instead of,
if (1 == 1) {
CGRect frame = self.viewHeader.frame;
frame.size.height = 0;
self.viewHeader.frame = frame;
self.viewHeader.hidden = YES;
}
use it as,
if (1 == 1) {
self.viewHeader.hidden = YES;
}
If you do not want the view anymore instead of just hiding, use [self.viewHeader removeFromSuperview];
And if you want to add it after removing [self.view addSubview:self.viewHeader]; All these depends on your requirement.
Update:
for eg:-
if (data.something == 0) {
//set frame1 as frame without tableHeaderView
self.tableView.frame = frame1;
self.tableView.tableHeaderView.hidden = YES;
} else {
//set frame2 as frame with tableHeaderView
self.tableView.frame = frame2;
self.tableView.tableHeaderView.hidden = NO;
}
or,
if (data.something == 0) {
//set frame1 as frame without tableHeaderView
self.tableView.frame = frame1;
self.tableView.tableHeaderView = nil;
} else {
//set frame2 as frame with tableHeaderView
self.tableView.frame = frame2;
self.tableView.tableHeaderView = self.headerView; //assuming that self.headerview is the tableHeaderView created while creating the tableview
}
Update2: Here is a very simple version of animation block.
if (data.something == 0) {
[UIView animateWithDuration:0.5 delay:0.0 options:UIViewAnimationCurveEaseOut
animations:^{
//set frame1 as frame without tableHeaderView
self.tableView.frame = frame1;
self.tableView.tableHeaderView.hidden = YES; // or self.tableView.tableHeaderView = nil;
}
completion:^(BOOL finished){
//if required keep self.tableView.frame = frame1;
}
];
} else {
[UIView animateWithDuration:0.5 delay:0.0 options:UIViewAnimationCurveEaseIn
animations:^{
//set frame2 as frame with tableHeaderView
self.tableView.frame = frame2;
self.tableView.tableHeaderView.hidden = NO;// or self.tableView.tableHeaderView = self.headerView;
}
completion:^(BOOL finished){
//if required keep self.tableView.frame = frame2;
}];
}
I am implementing a sliding drawer on iOS5 (iPad). I have created the drawer by subclassing UIView. The drawer is added to the main view, which works fine. However, when I try to slide the drawer on/off screen using a swipe gesture and setFrame, the drawer does not move.
I believe I have implemented the gesture recognizer correctly, and the frame is also being set correctly. However, the drawer just does not move. Any thoughts on what I am doing wrong?
Below is my code:
The following method is called from viewDidLoad from my controller:
- (void)loadVerticalDrawer
{
NSLog(#"LoadVerticalDrawer Executed");
verticalDrawerHidden = YES;
if (verticalDrawerHidden) {
verticalDrawer = [[VerticalDrawer alloc] initWithFrame:CGRectMake(514, 250, 60, 248)];//adjust verticalDrawer height and width here;
} else {
verticalDrawer = [[VerticalDrawer alloc] initWithFrame:CGRectMake(464, 250, 60, 248)];//adjust verticalDrawer height and width here;
}
verticalDrawer.appsManager = appsManager;
verticalDrawer.delegate = self;
[self.view addSubview:verticalDrawer];
}
The following is also called from viewDidLoad:
rightDrawerLeftSwipe = [[[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(rightDrawerHandleSwipeLeft:)] autorelease];
rightDrawerLeftSwipe.direction = UISwipeGestureRecognizerDirectionLeft;
rightDrawerLeftSwipe.numberOfTouchesRequired = 1;
rightDrawerLeftSwipe.delegate = self;
[verticalDrawer addGestureRecognizer:rightDrawerLeftSwipe];
rightDrawerRightSwipe = [[[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(rightDrawerHandleSwipeRight:)] autorelease];
rightDrawerRightSwipe.direction = UISwipeGestureRecognizerDirectionRight;
rightDrawerRightSwipe.numberOfTouchesRequired = 1;
rightDrawerRightSwipe.delegate = self;
[verticalDrawer addGestureRecognizer:rightDrawerRightSwipe];
FInally, this is the handler for the Right Swipe:
-(void) rightDrawerHandleSwipeRight:(UISwipeGestureRecognizer*) recognizer
{
if (recognizer.state == UIGestureRecognizerStateEnded)
{
if (!verticalDrawerHidden){
verticalDrawerHidden = YES;
float x = verticalDrawer.frame.origin.x;
float y = verticalDrawer.frame.origin.y;
float width = verticalDrawer.frame.size.width;
float height = verticalDrawer.frame.size.height;
NSLog(#"Swipe left, Vertical drawer, x=%f, y=%f, width=%f, height=%f:", x,y,width,height);
x+=50;
[verticalDrawer setFrame:CGRectMake(x,y,width,height)];
NSLog(#"Swipe left, Vertical drawer, x=%f, y=%f, width=%f, height=%f:", x,y,width,height);
return;
}
else {
return;
}
}
}
Please note that the frame of verticalDrawer is being set correctly (and the swipe handler is being called as desired), as per the logs, its just that the view is not moving at all!!