I have a tabBar application with a menu that is called up via a model view controller. Then when you select an option. I want it to dismiss while changing a SelectedIndex of the tabBAr.
here are my code snippets:
FirstTabBarController:
This is what calls the "menu"
-(IBAction)pressedButton {
GWDNativeViewController *secondView = [[GWDNativeViewController alloc] initWithNibName:nil bundle:nil];
[secondView setModalTransitionStyle:UIModalTransitionStyleCoverVertical];
[self presentModalViewController:secondView animated:YES];
}
This is the code to dismiss within the GWDNativeViewController (Menu) view:
-(IBAction)dismissThisView {
//Insert code to dismiss here
[self dismissModalViewControllerAnimated:YES];
[(UITabBarController *)self.parentViewController setSelectedIndex:3];
}
The line:
[(UITabBarController *)self.parentViewController setSelectedIndex:3];
doesn't seem to be doing the trick..
Try this:
YourAppDelegate *appDelegate = (YourAppDelegate *)[[UIApplication sharedApplication] delegate];
appDelegate.tabBarController.selectedIndex = 3;
Related
In iOS 8, when presenting a modal (lets say with a transparent background), we need to set the segue (or the modal) to use the presentation style of UIModalPresentationOverCurrentContext. This is working as expected.
To accomplish the same thing for iOS 7, you instead, need to set the presenting view controller to have a modal presentation style of UIModalPresentationCurrentContext. Here's where I'm having an issue. I present the modal with animation, but it doesn't animate. After it is presented, everything works fine, even animating the dismissal. Further, if I change the presentation style to UIModalPresentationFullScreen, it animates correctly.
I've searched around and read other posts, but I can't find the cause of this or a solution.
ViewController *vcObj = [[ViewController alloc] initWithNibName:NSStringFromClass([ViewController class]) bundle:nil];
UINavigationController *navCon = [[UINavigationController alloc] initWithRootViewController:vcObj];
if ([[UIDevice currentDevice].systemVersion floatValue] >= 8.0) {
navCon.providesPresentationContextTransitionStyle = YES;
navCon.definesPresentationContext = YES;
navCon.modalPresentationStyle = UIModalPresentationOverCurrentContext;
[self presentViewController:navCon animated:NO completion:nil];
}
else {
AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
[self presentViewController:navCon animated:NO completion:^{
[navCon dismissViewControllerAnimated:NO completion:^{
appDelegate.window.rootViewController.modalPresentationStyle = UIModalPresentationCurrentContext;
[self presentViewController:navCon animated:NO completion:nil];
appDelegate.window.rootViewController.modalPresentationStyle = UIModalPresentationFullScreen;
}];
}];
}
I am making an app with different view controllers. My home screen is in main.storyboard. Rest of the view controllers have their own xib, .h & .m files. I am trying this for navigation from home screen.
-(IBAction)btnSignUpTapped:(id)sender
{
SignUpWithEmailViewController * login = [[SignUpWithEmailViewController alloc] init];
UINavigationController *nav = [[UINavigationController alloc]
initWithRootViewController:login];
[self presentViewController:nav animated:YES completion:NULL];
}
This code works fine for navigating to different viewcontroller (in this case SignUpwithEmailViewController). On SignUpWithEmailViewController I have a back button which is supposed to bring me back to home screen. This is what I got so far:
-(IBAction)btnBackTapped:(id)sender
{
ViewController * homeScreen = [[ViewController alloc] init];
UINavigationController *nav = [[UINavigationController alloc]
initWithRootViewController:homeScreen];
[self presentViewController:nav animated:YES completion:NULL];
}
But as result of this code, screen turns black and nothing happens. How do I solve this problem? For hiding the nav bar I am using
-(void) viewWillAppear:(BOOL)animated
{
[[self navigationController] setNavigationBarHidden:YES animated:NO];
}
Yes, you have to insert you called viewController to NavigationController,
but if you wont to use modal flow - to close presentedViewController just call:
[self dismissViewControllerAnimated:YES completion:^{
}];
EDITED:
may be it will be more helpful, it just example, put it to you main view controller:
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
UIViewController *c = [[UIViewController alloc] init];
c.view.backgroundColor = [UIColor redColor];
[self presentViewController:c animated:YES completion:^{
[self dismissViewControllerAnimated:YES completion:^{
}];
}];
}
How can I make a Method display a new ViewController? I am trying to make the
Currently what I have :
-(void)gameOver{
[groundMovement invalidate];
[guyMovement invalidate];
topGround.hidden = YES;
bottomGround.hidden = YES;
guy.hidden = YES;
scoreLabel.hidden = YES;
gameViewController *viewController = [[UIStoryboard storyboardWithName:#"gameOver" bundle:nil] instantiateViewControllerWithIdentifier:#"gameOverViewController"];
[self presentViewController:viewController animated:YES completion:nil];
if (score > highScore) {
[[NSUserDefaults standardUserDefaults] setInteger:score forKey:#"HighScoreSaved"];
}
}
-(void)terminate{
MyNewViewController *myNewVC = [[MyNewViewController alloc] init];
// do any setup you need for myNewVC
[self presentModalViewController:myNewVC animated:YES];
}
Since your are using storyboards in your project, first make sure that your view controllers have a storyboard identifier. You can set it through the identity inspector in xCode. Then, you can instantiate a new view controller by calling:
YourViewControllerClass *viewController = [[UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil] instantiateViewControllerWithIdentifier:#"ViewControllerId"]; // Replace "MainStoryboard" and "ViewControllerId" with your storyboard name and the storyboard id for your view controller respectively
Then, depending on how your needs you can either push the new view controller (if for example you're using a navigation controller):
[self.navigationController pushViewController:viewController animated:YES];
or present it modally
[self presentViewController:viewController animated:YES completion:nil];
My problem is when I present a UIViewController the presenting views are going black.
I have a UIViewController named mainViewController which is the root view of my windows.
Inside I have a MMDrawerController (just added as a subview of mainViewController's view).
The MMDrawerController contains the rest of my views.
But when I'm presenting a new UIViewController from my mainViewController, the new VC displays well, but when it dismisses it left only black screen behind.
To note the black screen appears when adding (I can see it directly). Not when dismissing.
For testing purpose I did this code :
UIViewController *vc = [UIViewController new];
vc.view.backgroundColor = [UIColor redColor];
[[[[UIApplication sharedApplication] keyWindow] rootViewController] presentViewController:vc animated:NO completion:^{
[vc dismissViewControllerAnimated:YES completion:nil];
}];
Which do the same black result as normal use. (normally it's a QLViewController...)
My mainViewController is set like it :
_mainViewController = [MyMainViewController new];
_window.rootViewController = _mainViewController;
[self.window addSubview:_mainViewController.view];
Souce code of MMDrawerController which is up to date in my project
I have tested the code just in MMDrawerController example project, but I can't reproduce the problem, following is what I have tried:
MMAppDelegate.m
-(BOOL)application:(UIApplication *)application willFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
//...
UIViewController *testVc = [[UIViewController alloc] init];
testVc.view.backgroundColor = [UIColor greenColor];
[testVc.view addSubview:self.drawerController.view];
[self.window setRootViewController:testVc];
[self.window addSubview:testVc.view];
return YES;
}
MMExampleSideDrawerViewController.m:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
switch (indexPath.section) {
case MMDrawerSectionViewSelection:{
UIViewController *vc = [UIViewController new];
vc.view.backgroundColor = [UIColor redColor];
UIViewController *mainVC = [[UIApplication sharedApplication] keyWindow].rootViewController;
[mainVC presentViewController:vc animated:YES completion:^{
[vc dismissViewControllerAnimated:YES completion:nil];
}];
return;
//...
}
MMExampleCenterTableViewController.m:
-(void)doubleTap:(UITapGestureRecognizer*)gesture{
UIViewController *vc = [UIViewController new];
vc.view.backgroundColor = [UIColor redColor];
UIViewController *mainVC = [[UIApplication sharedApplication] keyWindow].rootViewController;
[mainVC presentViewController:vc animated:YES completion:^{
[vc dismissViewControllerAnimated:YES completion:nil];
}];
return;
[self.mm_drawerController bouncePreviewForDrawerSide:MMDrawerSideLeft completion:nil];
}
In the end, the problem was that I applied inset constraints on my mainViewController.
Behind the scene I suppose that method presentViewController:animated:completion: use frames and not AutoLayout, which break the UIView of the UIViewController that are in the mainViewController.
Thanks to #simalone, I used the same way to find the origin of the problem (use MMDrawerController example project).
I you want to test yourself the problem, I uploaded the example project with the issue so you can understand it.
There is a breakpoint on the line which is the origin of the bug.
Then just double click on the view.
Thanks again to #simalone. Cheers !
very new to obj-c.
I´ve made a simple MainViewController, loading its view from a xib. (From a standard single view template)
On the main view is a button that takes me to another view. Below is the Method:
-(IBAction)forward:(id)sender
{
tvc = [[TrackViewController alloc] initWithNibName:nil bundle:[NSBundle mainBundle]];
[self.view addSubview:tvc.view];
}
On the other view (also loaded from xib) i have a button to take me back to the main view.
Here is my IBAction for returning to the main view:
-(IBAction) back:(id)sender {
[self.navigationController popViewControllerAnimated:YES];
}
However it does not return to the main view. Not with popToRootViewControllerAnimated: either.
Any response will be appreciated!
This answer applies when you are not using UINavigationBar
In your Forward button you need to write.
TrackViewController *lf = [[TrackViewController alloc]initWithNibName:#"TrackViewController" bundle:nil];
[self presentViewController:TVC animated:YES completion:nil];
and in the Backward screen you should right.
[self dismissViewControllerAnimated:NO completion:nil];
You should load your MainViewController in your AppDelegate in an UINavigationController
MainViewController *mainVC = ...
UINavigationController *naviVC = [[UINavigationController alloc] initWithRootViewController:mainVC];
self.window.rootViewController = naviVC;
Then you can go forward in your MainViewController:
-(IBAction)forward:(id)sender;
{
tvc = [[TrackViewController alloc] initWithNibName:nil bundle:[NSBundle mainBundle]];
[self.navigationController pushViewController:tvc animated:YES];
}
and go back in your other ViewController:
-(IBAction) back:(id)sender {
[self.navigationController popViewControllerAnimated:YES];
}
If your MainViewController is inside a UINavigationController, then the forward method should look like this:
-(IBAction)forward:(id)sender
{
tvc = [[TrackViewController alloc] initWithNibName:nil bundle:[NSBundle mainBundle]];
[self.navigationController pushViewController:tvc animated:TRUE];
}