Without going into the 'why' of it all, I have UITextField that is part of a view hierarchy that is forcibly 'upside down' on screen via an affine transform.
CGAffineTransformMakeRotation(DEGREES_TO_RADIANS(180))
This works fine for all of the subviews -- including the UITextField -- until the user wants to use the copy/paste features of UIMenuController on the text field content. When the UIMenuController is shown, it is 'right side up' rather than 'upside down' like the UITextField.
Is there anyway to get a hold of the UIMenuController's view to apply the same transform when it is shown?
Currently, I am listening for the UIMenuControllerWillShowMenuNotification notification and then getting the UIMenuController. But I can't seem to find a way to apply the transform to it. Any ideas?
- (void)textFieldDidBeginEditing:(UITextField *)textField {
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(menuControllerWillShow:) name:UIMenuControllerWillShowMenuNotification object:nil];
}
- (void)menuControllerWillShow:(NSNotification*)aNotification {
UIMenuController* menuController = [UIMenuController sharedMenuController];
CGAffineTransform xform = CGAffineTransformMakeRotation(DEGREES_TO_RADIANS(180));
CGRect oldRect = menuController.menuFrame;
CGRect newRect = CGRectApplyAffineTransform(oldRect, xform);
// eh... now what?
}
I don't think you can modify the UIMenuController so it's upside down.
But if it's pretty much your entire app that's altered, you could either check the device orientation or the app orientation (by checking where the status bar is) and force it to be the opposite.
To get the device orientation you could do something like this:
UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation]
Note from the docs:
The value of this property always returns 0 unless orientation notifications have been enabled by calling beginGeneratingDeviceOrientationNotifications.
Or get the app orientation with this:
UIInterfaceOrientation orientation = [UIApplication sharedApplication].statusBarOrientation;
if(orientation == 0) //Default orientation
{
//UI is in Default (Portrait) -- this is really a just a failsafe.
}
else if(orientation == UIInterfaceOrientationPortrait)
{
//Do something if the orientation is in Portrait
}
else if(orientation == UIInterfaceOrientationLandscapeLeft)
{
// Do something if Left
}
else if(orientation == UIInterfaceOrientationLandscapeRight)
{
//Do something if right
}
and then set it with something like this:
Objective-C:
NSNumber *value = [NSNumber numberWithInt:UIInterfaceOrientationLandscapeLeft];
[[UIDevice currentDevice] setValue:value forKey:#"orientation"];
Swift:
let value = UIInterfaceOrientation.LandscapeLeft.rawValue
UIDevice.currentDevice().setValue(value, forKey: "orientation")
i create a custom button and label in portrait mode and landscape mode separately as below:
- (BOOL)shouldAutorotate {
UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
if (orientation == UIInterfaceOrientationPortrait) {
[self addButton1];
[self addLabel1];
}
else if(orientation == UIInterfaceOrientationLandscapeRight)
{
[self addButton2];
[self addLabel2];
}
return YES;
}
if i run this code,in landscape mode both buttons and labels are displayed.
if i try this:
else if(orientation == UIInterfaceOrientationLandscapeRight)
{
[self addButton2];
[self addLabel2];
[custombtn1 setHidden:YES];
}
error:use of undeclared identifier.
can somebody help me?
You need to implement the method:
- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
This method is called regardless of whether your code performs one-step or two-step rotations.
Parameters
fromInterfaceOrientation
The old orientation of the user interface. For possible values, see UIInterfaceOrientation.
Additionally, you could hide unnecessary buttons.
addButton2.hidden = YES;
Currently i am working on IOS 7 and my problem is i am not able to get orientation of current device in ViewDidLoad method.
- (BOOL)shouldAutorotate
{
return YES;
}
- (NSUInteger)supportedInterfaceOrientations
{
return (UIInterfaceOrientationMaskAll);
}
- (void)viewDidLoad
{
[super viewDidLoad];
if (UIDeviceOrientationIsLandscape([UIDevice currentDevice].orientation)){
NSLog(#"i am in landscape mode");
}
if (UIDeviceOrientationIsPortrait([UIDevice currentDevice].orientation)){
NSLog(#"i am in portrait mode");
}
}
I write this code in my FirstViewController.m,and when i run my application no condition become true out of them,
can anybody help me why no condition become true even i run my application in portrait mode.
Thanks in advance.
Try this.
UIInterfaceOrientation orientation = [UIApplication sharedApplication].statusBarOrientation;
if(UIInterfaceOrientationIsLandscape(orientation)) {
//Landscape mode
}
else
{
//Portrait mode
}
EDIT : Use UIInterfaceOrientationIsLandscape and UIInterfaceOrientationIsPortrait method to find orientation mode
try this
UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
if (UIDeviceOrientationIsLandscape(orientation))
{
NSLog(#"i am in landscape mode");
}
if (UIDeviceOrientationIsPortrait(orientation)){
NSLog(#"i am in portrait mode");
}
oky u hav other orientation call back methods this one called before rotation is going to occur - (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration and this one just after second one - (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation, for example
- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
UIInterfaceOrientation orientation = toInterfaceOrientation; //hear toInterfaceOrientation contains the which orientation is device is turning to
if (UIDeviceOrientationIsLandscape(orientation))
{
NSLog(#"i am in landscape mode");
}
if (UIDeviceOrientationIsPortrait(orientation)){
NSLog(#"i am in portrait mode");
}
}
- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
UIInterfaceOrientation orientation = fromInterfaceOrientation; // hear fromInterfaceOrientation contains previous state of the orientation
if (UIDeviceOrientationIsLandscape(orientation))
{
NSLog(#"i am in landscape mode");
}
if (UIDeviceOrientationIsPortrait(orientation)){
NSLog(#"i am in portrait mode");
}
}
for more information see docs
hope this helps u .. :)
I need to change the image background of a View depending on the orientation. For this, I am using the statusBarOrientation approach in viewWillAppear:
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
UIInterfaceOrientation currentOrientation = [[UIApplication sharedApplication] statusBarOrientation];
if (UIInterfaceOrientationIsPortrait(currentOrientation)) {
NSLog(#"PORTRAIT");
} else if (UIInterfaceOrientationIsLandscape(currentOrientation)) {
NSLog(#"LANDSCAPE");
}
}
The problem is that the console is always showing PORTRAIT, even when the iPad is held in landscape mode. The same code in viewDidAppear works correctly, but there is too late and the user can see the change of images. That makes me think that the correct state of statusBarOrientation is still not available in viewWillAppear, but I have read in some other questions that this code should work there.
Try
int type = [[UIDevice currentDevice] orientation];
if (type == 1) {
NSLog(#"portrait default");
}else if(type ==2){
NSLog(#"portrait upside");
}else if(type ==3){
NSLog(#"Landscape right");
}else if(type ==4){
NSLog(#"Landscape left");
}
You shouldn't be using the statusBarOrientation to determine the current orientation of the application. According to Apple's doc: http://developer.apple.com/library/ios/#DOCUMENTATION/UIKit/Reference/UIApplication_Class/Reference/Reference.html
The value of this property is a constant that indicates an orientation of the receiver's status bar. See UIInterfaceOrientation for details. Setting this property rotates the status bar to the specified orientation without animating the transition. If your application has rotatable window content, however, you should not arbitrarily set status-bar orientation using this method. The status-bar orientation set by this method does not change if the device changes orientation.
Try using the interfaceOrientation property of a UIViewController to get the orientation of the current application.
Here is a useful code snippet for logging the device's interfaceOrientation:
NSArray* orientations = #[ #"nothing", #"UIInterfaceOrientationPortrait", #"UIInterfaceOrientationPortraitUpsideDown", #"UIInterfaceOrientationLandscapeLeft", #"UIInterfaceOrientationLandscapeRight”];
NSLog(#"Current orientation := %#", orientations[self.interfaceOrientation]);
Hope this helps someone out!
In a given event handler (not the "shouldAutorotateToInterfaceOrientation" method) how do I detect the current iPad orientation? I have a text field I have to animate up (when keyboard appears) in the Landscape view, but not in the portrait view and want to know which orientation I'm in to see if the animation is necessary.
Orientation information isn't very consistent, and there are several approaches. If in a view controller, you can use the interfaceOrientation property. From other places you can call:
[[UIDevice currentDevice] orientation]
Alternatively, you can request to receive orientation change notifications:
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(orientationChanged:) name:UIDeviceOrientationDidChangeNotification object:nil];
Some people also like to check the status bar orientation:
[UIApplication sharedApplication].statusBarOrientation
I think
[[UIDevice currentDevice] orientation];
is not really reliable. Sometimes it works, sometimes not... In my apps, I use
[[UIApplication sharedApplication]statusBarOrientation];
and it works great!
One of:
Check the interfaceOrientation property of the active view controller.
[UIApplication sharedApplication].statusBarOrientation.
[UIDevice currentDevice].orientation. (You may need to call -beginGeneratingDeviceOrientationNotifications.)
I found a trick to solve the FaceUp orientation issue!!!
Delay the orientation check till AFTER the app has started running, then set variables, view sizes, etc.!!!
//CODE
- (void)viewDidLoad {
[super viewDidLoad];
//DELAY
[NSTimer scheduledTimerWithTimeInterval:0.5
target:self
selector:#selector(delayedCheck)
userInfo:nil
repeats:NO];
}
-(void)delayedCheck{
//DETERMINE ORIENTATION
if( [UIApplication sharedApplication].statusBarOrientation == UIInterfaceOrientationPortrait ){
FACING = #"PU";
}
if( [UIApplication sharedApplication].statusBarOrientation == UIInterfaceOrientationPortraitUpsideDown ){
FACING = #"PD";
}
if( [UIApplication sharedApplication].statusBarOrientation == UIInterfaceOrientationLandscapeLeft ){
FACING = #"LL";
}
if( [UIApplication sharedApplication].statusBarOrientation == UIInterfaceOrientationLandscapeRight ){
FACING = #"LR";
}
//DETERMINE ORIENTATION
//START
[self setStuff];
//START
}
-(void)setStuff{
if( FACING == #"PU" ){
//logic for Portrait
}
else
if( FACING == #"PD" ){
//logic for PortraitUpsideDown
}
else{
if( FACING == #"LL"){
//logic for LandscapeLeft
}
else
if( FACING == #"LR" ){
//logic for LandscapeRight
}
}
//CODE
You can addSubviews, position elements, etc. in the 'setStuff' function ... anything that would initially depend on the orientation!!!
:D
-Chris Allinson
You can achieve this by two ways:
1- By using the following method:
**Put the following line in the -(void)viewDidLoad Method:
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(deviceRotated:) name:UIDeviceOrientationDidChangeNotification object:nil];
then put this method inside your class
-(void)deviceRotated:(NSNotification*)notification
{
UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
if(orientation == UIInterfaceOrientationLandscapeLeft || orientation == UIInterfaceOrientationLandscapeRight)
{
//Do your textField animation here
}
}
The above method will check the orientation when the device will be rotated
2- The second way is by inserting the following notification inside -(void)viewDidLoad
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(checkRotation:) name:UIApplicationDidChangeStatusBarOrientationNotification object:nil];
then put the following method inside your class
-(void)checkRotation:(NSNotification*)notification
{
UIInterfaceOrientation orientation = [UIApplication sharedApplication].statusBarOrientation;
if(orientation == UIInterfaceOrientationLandscapeLeft || orientation == UIInterfaceOrientationLandscapeRight)
{
//Do your textField animation here
}
}
The above method will check the orientation of the status bar of the ipad or iPhone and according to it you make do your animation in the required orientation.
For determining landscape vs portrait, there is a built-in function:
UIInterfaceOrientation orientation = [[UIDevice currentDevice] orientation];
BOOL inLandscape = UIDeviceOrientationIsLandscape(orientation);
[UIApplication sharedApplication].statusBarOrientation returns portrait when it's landscape, and landscape when it's portrait at launch, in iPad
I don't know why, but every time my app starts, the first 4 are right, but subsequently I get the opposite orientation. I use a static variable to count this, then have a BOOL to flip how I manually send this to subviews.
So while I'm not adding a new stand-alone answer, I'm saying use the above and keep this in mind. Note: I'm receiving the status bar orientation, as it's the only thing that gets called when the app starts and is "right enough" to help me move stuff.
The main problem with using this is the views being lazily loaded. Be sure to call the view property of your contained and subviews "Before" you set their positions in response to their orientation. Thank Apple for not crashing when we set variables that don't exist, forcing us to remember they break OO and force us to do it, too... gah, such an elegant system yet so broken! Seriously, I love Native, but it's just not good, encourages poor OO design. Not our fault, just reminding that your resize function might be working, but Apple's Way requires you load the view by use, not by creating and initializing it
In your view controller, get the read-only value of self.interfaceOrientation (the current orientation of the interface).
I've tried many of the above methods, but nothing seemed to work 100% for me.
My solution was to make an iVar called orientation of type UIInterfaceOrientation in the Root View Controller.
- (void)viewDidLoad {
[super viewDidLoad];
orientation = self.interfaceOrientation; // this is accurate in iOS 6 at this point but not iOS 5; iOS 5 always returns portrait on app launch through viewDidLoad and viewWillAppear no matter which technique you use.
}
- (BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation{
return YES;
}
-(void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration{
orientation = toInterfaceOrientation;
}
Then, any place where you need to check the orientation you can do something like this:
if(UIInterfaceOrientationIsPortrait(orientation)){
// portrait
}else{
// landscape
}
There may still be a better way, but this seems to work 98% of the time (iOS5 notwithstanding) and isn't too hard. Note that iOS5 always launches iPad in portrait view, then sends a device the willRotateTo- and didRotateFromInterfaceOrientation: messages, so the value will still be inaccurate briefly.
[UIDevice currentDevice].orientation works great.
BUT!!!
... the trick is to add it to - (void)viewWillAppear:(BOOL)animated
exp:
(void)viewWillAppear:(BOOL)animated{
...
BOOL isLandscape = UIInterfaceOrientationIsLandscape(self.interfaceOrientation);
...
}
If you call it at - (void)viewDidLoad, it does not work reliable, especially if you use multiple threads (main UI thread, background thread to access massive external data, ...).
Comments:
1) Even if your app sets default orientation portrait, user can lock it at landscape. Thus setting the default is not really a solution to work around it.
2) There are other tasks like hiding the navigation bar, to be placed at viewWillAppear to make it work and at the same time prevent flickering. Same applies to other views like UITableView willDisplayCell -> use it to set cell.selected and cell.accessoryType.