I try to set an uiview from the app delegate to an other viewcontroller, in viewcontroller I add an IBOutlet property and from app delegate I use this code:
self.secondViewController = [[SecondViewController alloc] initWithNibName:#"SecondViewController" bundle:nil];
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 500, 500)];
[view setBackgroundColor:[UIColor redColor]];
self.secondViewController.myView = view;
self.window.rootViewController = self.secondViewController;
[self.window makeKeyAndVisible];
but the view of my uiviewcontroller isn't red, but the default color that I give from IB.
where is the error?
Related
If I create a basic ViewController and add an opaque UIToolbar to the view, like so:
UIViewController* viewController = [[UIViewController alloc] init];
[viewController.view setBackgroundColor:[UIColor blueColor]]; // To make it easy to see
self.window.rootViewController = viewController;
UIToolbar* toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, viewController.view.frame.size.height - 49, viewController.view.frame.size.width, 49)]; // At bottom. Height of 49
[toolbar setBarStyle:UIBarStyleBlack]; // Opaque and easy to see
[self.window.rootViewController.view addSubview:toolbar]; // Add toolbar to view controller
The view hierarchy ends up like below:
How do I make the View controller resize it's main area (the blue part) so it doesn't extend behind the UIToolbar?
Try to add this line of code
viewController.edgesForExtendedLayout = UIRectEdgeNone;
this will make so view controller's edges are not extended in any direction.
Or you can add this if you want to extend top, left and right, but not bottom.
viewController.edgesForExtendedLayout = UIRectEdgeTop, UIRectEdgeLeft, UIRectEdgeRight;
Try like this
UIViewController* viewController = [[UIViewController alloc] init];
[viewController.view setBackgroundColor:[UIColor blueColor]]; // To make it easy to see
self.window.rootViewController = viewController;
UIToolbar* toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, viewController.view.frame.size.height - 49, viewController.view.frame.size.width, 49)]; // At bottom. Height of 49
[toolbar setBarStyle:UIBarStyleBlack]; // Opaque and easy to see
SecondViewController* secondChildVC = [self.storyboard instantiateViewControllerWithIdentifier:#"someId"];
[secondChildVC.view setBackgroundColor:[UIColor redColor]];
[viewController addChildViewController:secondChildVC];
[secondChildVC didMoveToParentViewController:viewController];
secondChildVC.view.frame = CGRectMake(0,0,viewController.view.frame.size.width,viewController.view.frame.size.height - 49);
[viewController.view addSubview:secondChildVC.view];
[self.window.rootViewController.view addSubview:toolbar];
Is there a way to insert any UIView in NavigationBar like the image below?
Is this not working?
UINavigationBar *navBar = [[UINavigationBar alloc] initWithFrame: CGRectMake(0.0f, 20.0f, 320.0f, 32.0f)];
UIView *tempView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 20)];
[[self view] addSubview: tempView];
[[self view] addSubview: navBar];
UINavigationItem *navItem = [[UINavigationItem alloc] initWithTitle: #"Controls"];
[navBar pushNavigationItem:navItem animated:NO];
In the code below, I embed a view into the navbar, where my embedded view draws the background and the new buttons. The code also deals with relaying out the view when the device is rotated.
- (void)viewDidLayoutSubviews {
[super viewDidLayoutSubviews];
if (view.superview == nil) {
[self.navigationBar addSubview:view];
[self.navigationBar setBackgroundImage:[[UIImage alloc] init] forBarMetrics:UIBarMetricsDefault];
}
CGRect frame = self.navigationBar.frame;
frame.size.height = MY_NAVBAR_HEIGHT;
self.navigationBar.frame = frame;
view.frame = self.navigationBar.bounds;
}
An alternative solution is to use a regular UIView as a NavBar, and by saying that what I mean is you have to set the UIView in navbar place and hide the NavigationController bar in the main VC and show it in the next one read this article Here https://medium.com/me/stats/post/54bc5fc56d6c
NOTE: Jump to end for answer.
I am new to IOS Programming. How can I add a visible UIView to the following code. So far it just has the nav bar appear, and black space below, no imageView or the square UIView in the code below.
Below is code in my HomeScreenViewController
- (void)viewDidLoad
{
[super viewDidLoad];
UIImageView *friendsIcon = [[UIImageView alloc] initWithImage:([UIImage imageWithContentsOfFile:#"change_user-512"])];
[friendsIcon setFrame:CGRectMake(0, 0, 100, 100)];
[self.view addSubview:friendsIcon];
UIView *square = [[UIView alloc] initWithFrame:CGRectMake(200, 200, 100, 100)];
[square setTintColor:[UIColor orangeColor]];
[self.view addSubview:square];
// Do any additional setup after loading the view.
}
Below is code in AppDelegate.
#implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.myViewController = [[HomeScreenViewController alloc] init];
UINavigationController *navBar = [[UINavigationController alloc] initWithRootViewController:self.myViewController];
navBar.title = #"Navigation";
self.window.rootViewController = navBar;
[self.window makeKeyAndVisible];
return YES;
}
EDIT:
Here is also the interface for appDelegate. This is literally the only code in the proj other than the generated lines upon creating the project in xcode. I also deleted the storyboard file along with its info in the plist file (otherwise the app would crash).
#import <UIKit/UIKit.h>
#import "HomeScreenViewController.h"
#interface AppDelegate : UIResponder <UIApplicationDelegate>
#property (strong, nonatomic) UIWindow *window;
#property (nonatomic, strong) HomeScreenViewController *myViewController;
#end
EDITAgain:
No Need to Read Comments, just read this:
Yes, viewDidLoad does invoke.
The background changes to red if i set background color.
No I am not using storyboard.
Still unanswered.
http://postimg.org/image/h5ayao2q3/
FINAL EDIT: Finally! problem solved. It was as simple as setting the background colour for the UIView square. D'oh.
- (void)loadView
{
[super loadView];
self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
[self.view setBackgroundColor:[UIColor redColor]];
UIImageView *friendsIcon = [[UIImageView alloc] initWithImage:([UIImage imageWithContentsOfFile:#"change_user-512"])];
[friendsIcon setFrame:CGRectMake(0, 0, 100, 100)];
[self.view addSubview:friendsIcon];
UIView *square = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
[square setBackgroundColor:[UIColor orangeColor]];
[self.view addSubview:square];
// Do any additional setup after loading the view.
}
Thank you very much everyone for your help. I guess my UIImage is borked, but I can figure that out myself.
Try changing it:
self.myViewController = [[HomeScreenViewController alloc] init];
TO:
self.myViewController = [[HomeScreenViewController alloc] initWithNibName:#"HomeScreenViewController" bundle:nil];
And Make sure there are some label or some thing in HomeScreenViewController. Other part of your code looks fine. Hope this helps. :)
First put breakpoint and verify that ViewDidLoad method is getting called.
If not , since you mentioned that you are creating the views programmatically you need to override the - (void)loadView method and create the view for the view controller.
-(void)loadView {
self.view = [[UIView alloc] init];
UIImageView *friendsIcon = [[UIImageView alloc] initWithImage:([UIImage imageWithContentsOfFile:#"change_user-512"])];
[friendsIcon setFrame:CGRectMake(0, 0, 100, 100)];
[self.view addSubview:friendsIcon];
UIView *square = [[UIView alloc] initWithFrame:CGRectMake(200, 200, 100, 100)];
[square setBackgroundColor:[UIColor orangeColor]];
[self.view addSubview:square];
}
Changed the line [square setTintColor:[UIColor orangeColor]]; to [square setBackgroundColor:[UIColor orangeColor]];
right click your UIViewController and check view connection is established to the xib or storyboard view.
ViewDidload will not get called unless view loads from storyboard or xib.
loadView method gets called if you are creating UIView programatically
If you are not using story board or XIB then you need to add the following method
-(void)loadView{
//load the views
}
I have two options to solve this problem:
1) If you have XIB file corresponding to the controller:
HomeScreenViewController *homeScreenViewController = [[HomeScreenViewController alloc] initWithNibName:#"HomeScreenViewController"] bundle:nil];
1a. Verify the name of your XIB is correct.
1b. Goto XIB file of HomeScreenViewController -> File Owner -> Connection Inspector -> Check the view outlet is connected.
2) If you do it programmatically, add this to the end of your loadView function:
self.view = square;
so the final code should look like:
- (void)loadView
{
//[super loadView];
self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; // <-- look at here, your view has changed its frame now
[self.view setBackgroundColor:[UIColor redColor]];
UIImageView *friendsIcon = [[UIImageView alloc] initWithImage:([UIImage imageWithContentsOfFile:#"change_user-512"])];
[friendsIcon setFrame:CGRectMake(0, 0, 100, 100)];
[self.view addSubview:friendsIcon];
UIView *square = [[UIView alloc] initWithFrame:CGRectMake(200, 200, 100, 100)];
[square setTintColor:[UIColor orangeColor]];
[self.view addSubview:square];
// Do any additional setup after loading the view.
}
this is how i set image in my first class in viewDidLoad which is tableView
if ([self.navigationController.navigationBar respondsToSelector:#selector(setBackgroundImage:forBarMetrics:)]) {
[self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:#"header.png"] forBarMetrics:UIBarMetricsDefault];
}
now this how i go to detail view
DetailViewController *dvController = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:[NSBundle mainBundle]];
[self.navigationController pushViewController:dvController animated:YES];
in detail view's bar the image which i have set for navigation bar comes automatically there and everything works perfect
now my problem is that pushViewController is working perfectly images are getting displayed
but i get default image in presentModelViewController this is how i use it
- (void) modelappear
{
if (self.testModalViewController == nil)
{
TestModalViewController *temp = [[TestModalViewController alloc] initWithNibName:#"TestModalViewController" bundle:[NSBundle mainBundle]];
self.testModalViewController = temp;
[temp release];
}
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:self.testModalViewController];
[self presentModalViewController:nav animated:YES];
}
Note i just set buttons in inner hierarchy views
Can you please tell me what am i doing wrong? please give explanation with answer thank you so much
try like this ,
DetailViewController *dvController = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:[NSBundle mainBundle]];
dvController.topViewController.navigationController.navigationBar.tintColor = [UIColor colorWithPatternImage:[UIIMage imageNamed:#"name.png"]];
[self presentModalViewController:nav animated:YES];
UIImage *image = [UIImage imageNamed:#"header.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
[self.navigationController.navigationBar addSubview:imageView];
UIImage *image = [UIImage imageNamed:#"header.png"];
UIImageView *imageViewe = [[UIImageView alloc] initWithImage:image];
UILabel *tmpTitleLabel = [[UILabel alloc] initWithFrame:CGRectMake(100, 3, 150, 40)];
[tmpTitleLabel setFont:[UIFont boldSystemFontOfSize:18]];
tmpTitleLabel.text = #"Add Manually";
tmpTitleLabel.backgroundColor = [UIColor clearColor];
tmpTitleLabel.textColor = [UIColor whiteColor];
CGRect applicationFrame = CGRectMake(0, 0, 300, 40);
UIView * newView = [[[UIView alloc] initWithFrame:applicationFrame] autorelease];
[newView addSubview:imageViewe];
[newView addSubview:tmpTitleLabel];
[self.navigationController.navigationBar addSubview:newView];
I have a tabbarcontroller that is pushed onto a navigationController. I tried to change the background color of the tab bar however it does not work:
UIViewController *viewController1, *viewController2;
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
viewController1 = [[Tab1_iPhone alloc] initWithNibName:#"tab1_iPhone" bundle:nil];
viewController2 = [[Tab2_iPhone alloc] initWithNibName:#"tab2_iPhone" bundle:nil];
}
self.tabBarController = [[UITabBarController alloc] init];
CGRect frame = CGRectMake(0.0, 0.0, 480, 48);
UIView *v = [[UIView alloc] initWithFrame:frame];
[v setBackgroundColor:[UIColor blueColor]]; //003366
[v setAlpha:1.0];
[[self.tabBarController tabBar] insertSubview:v atIndex:0];
self.tabBarController.viewControllers = [NSArray arrayWithObjects: viewController1, viewController2, nil];
[self.navigationController setNavigationBarHidden:YES];
[self.navigationController pushViewController:self.tabBarController animated:YES];
[self.window makeKeyAndVisible];
This is the code I saw on a similar post that changes the bg color:
CGRect frame = CGRectMake(0.0, 0.0, 480, 48);
UIView *v = [[UIView alloc] initWithFrame:frame];
[v setBackgroundColor:[UIColor blueColor]]; //003366
[v setAlpha:1.0];
[[self.tabBarController tabBar] insertSubview:v atIndex:0];
Am I doing something wrong?
Thanks
The below code helps you to add custom colors with RGB values to ur tabBar.
self.tabBarController.tabBar.tintColor = [[UIColor alloc] initWithRed:0.00
green:0.62
blue:0.93
alpha:1.0];