HI,
I develop an application in which I want to implement the splash screen, on that splash screen I want to bind the scrollView and UIImage. My code as follow,
-(void)splashAnimation{
window = [[UIWindow alloc] initWithFrame:CGRectMake(0, 0, 320, 420)];
//scrollView = [[UIScrollView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];
scrollView = [[UIScrollView alloc] initWithFrame:[window bounds]];
scrollView.pagingEnabled = NO;
scrollView.bounces = NO;
UIImage *image = [UIImage imageNamed:#"splash.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.userInteractionEnabled = NO;
[scrollView addSubview:imageView];
[scrollView setDelegate:self];
//[scrollView release];
}
- (void)applicationDidFinishLaunching:(UIApplication *)application {
[self splashAnimation];
[self initControllers];
[window addSubview:[mainTabBarController view]];
[window makeKeyAndVisible];
}
On my given code the one blank window comes up and stay on.
I want to on that blank screen bind my splash.png.
****The Above problem is solved****
My current code is
scrollView.pagingEnabled = NO;
scrollView.bounces = NO;
UIImage *image = [UIImage imageNamed:#"splash.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.userInteractionEnabled = NO;
[scrollView addSubview:imageView];
scrollView.maximumZoomScale = 4.0f;
scrollView.minimumZoomScale = 1.0f;
CGRect rect = CGRectMake(119, 42, 208, 166);
[scrollView zoomToRect:rect animated:YES];
[scrollView setDelegate:self];
[window addSubview:scrollView];
[window makeKeyAndVisible];
I want to zoom the particular part of scrollView.
RajB - for your zooming of the scrollView do this:
CGRect zoomRect = CGRectMake(119, 42, 208, 166);
[scrollView zoomToRect:zoomRect animated:YES];
Hope this helps!
You create a UIScrollView but never add it to the view hierarchy, therefore it will never get displayed. Call [window addSubview:scrollView], and then don't forget to release it.
If you are using a MainWindow.xib in your project, your window is created for you, you do not need to create your own.
Use [[UIScreen mainScreen] instead of CGRect(0, 0, 320, 420) <- I also believe you meant "480"
After setting up your splash animation, you call [window addSubview:[mainTabBarController view]]. Even after adding your scrollview as previously mentioned, this will then become the topmost and therefore visible view.
Delay the [window addSubview:[mainTabBarController view]] until after your splash animation completes.
Related
Note: Everything worked fine on the older screen sizes however on the new iphone screens (640x1136) things are way to far down
here is the App Delegate initing and showing myRootViewController
myRootViewController = [[RootViewController alloc] initWithNibName:#"RootViewController" bundle:[NSBundle mainBundle]];
[myRootViewController.view setFrame:[[UIScreen mainScreen] applicationFrame]];
//NSLog(#"rootviewcontroller1 frame %#", NSStringFromCGRect(myRootViewController.view.frame));
//OUTPUTS: {{0, 0}, {320, 460}}
[window addSubview:myRootViewController.view];
The RootViewController sets the frame for the 'navigationController' and a few other views before adding them to its view.
//NSLog(#"ogtest rootviewcontroller frame2 %#", NSStringFromCGRect(self.view.frame));
//OUTPUTS: {{0, 20}, {320, 548}}
[navigationController.view setFrame:CGRectMake(0, 0, 320,528)];
//I have tried multiples variations including not setting it.
loadingView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];
[loadingView setBackgroundColor:[UIColor clearColor]];
UILabel *_loadingLable = [[UILabel alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 80.0f, 20.0f)];
_loadingLable.backgroundColor = [UIColor clearColor];
_loadingLable.textColor = [UIColor whiteColor];
_loadingLable.text = #"Loading...";
[_loadingLable setCenter:CGPointMake(181.0f, 240.0f)];
activityIndicatior = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
[activityIndicatior setCenter:CGPointMake(120.0f, 240.0f)];
RoundedView *_roundedRectangle = [[RoundedView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 140.0f, 50.0f) roundedCorner:RoundedCornersTypeALL];
_roundedRectangle.center = CGPointMake(160.0, 240.0);
_roundedRectangle.rectColor = [UIColor blackColor];
_roundedRectangle.alpha = 0.7;
[loadingView addSubview:_roundedRectangle];
[loadingView addSubview:activityIndicatior];
[loadingView addSubview:_loadingLable];
[_loadingLable release];
[_roundedRectangle release];
[loadingView setHidden:YES];
[self.view addSubview:[navigationController view]];
[self.view addSubview: loadingView];
You can see from the image below that the grey bar is there for the nav bar. The text "Tuesday 30 Apr...." with the arrow buttons should occupy that grey area and not 2 cells from the top.
If you find yourself setting the frame of your navigation controller / navigation bar, you're doing something wrong.
Most of the time, you don't even need to set the frame of your view controller's view either.
Your app delegate needn't be any more complicated than this:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[self setWindow:[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]];
[[self window] setRootViewController:[[UINavigationController alloc] initWithRootViewController:[[RootViewController alloc] init]];
[self.window makeKeyAndVisible];
return YES;
}
It will most likely be a setting in your RootViewController nib. For the first view in the "Objects" list on the left, you have probably set the Top Bar property.
I ended up creating separate xib files with
_iPhone_Retina
at end of the file name
Which also called for statements like this
if (IS_IPHONE_RETINA) {
View = [[View alloc] initWithNibName:#"View_iPhone_Retina" bundle:[NSBundle mainBundle]];
}else{
View = [[View alloc] initWithNibName:#"View" bundle:[NSBundle mainBundle]];
}
and IS_IPHONE_RETINA is defined in the projectname.pch file as
#define IS_IPHONE_RETINA ([[UIScreen mainScreen] bounds].size.height == 568 )
I am new to iOS development, but have had an extensive crash course recently (BNR guid to iOS Programming). I am working on modally adding views to an app. I currently do not have a View Controller, so my AppDelegate's application:didFinishLaunchingWithOptions method looks as follows:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
MyUIView *map = [[MapSurface alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
//this one does not work: MyUIView *map = [[MapSurface alloc] initWithFrame:CGRectMake(0, 0, 256, 256)];
[map setBackgroundColor:[UIColor grayColor]];
[[self window] addSubview:map];
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
return YES;
}
After the view loads, I make a call to add a subview, but I cannot set the frame size using CGRectMake. It doesn't show up on screen. The only thing I have found to work is using the screen size, but this is not what I want. Here is the code for adding this subview:
UIImage *image = [[UIImage alloc] initWithCGImage:img];//img is a CGImageRef
UIImageView *view = [[UIImageView alloc] initWithImage:image];
CGRect b = CGRectMake(0, 0, 256, 256);
//[view setFrame:b];//nothing shows on screen
//[view setBounds:b];//nothing shows on screen
//[view setBounds:[[UIScreen mainScreen] bounds]];//shows the tan area in the graphic below
[view setFrame:[[UIScreen mainScreen] bounds]];//fills the screen
[map addSubView:view];
CGImageRelease(img);
I was setting the bounds attribute, when I should have been setting frame. Making this change fixed the issue.
When this Action is executed it displays totally black view screen with toolbar
- (void)displayviewsAction:(id)sender
{
self.view = [[[UIView alloc] initWithFrame:[[UIScreen mainScreen] bounds]]autorelease];
self.view.frame = CGRectMake(0, 0, 320, 480);
[self.view addSubview:toolbar];
UIView *viewController = [[UIView alloc] init];
UIView *secondController = [[UIView alloc] init];
[self.view insertSubview:viewController atIndex:1];
[self.view insertSubview:secondController atIndex:2];
NSLog(#"%d", [[self.view subviews] indexOfObject:viewController]); // Is 1
NSLog(#"%d", [[self.view subviews] indexOfObject:secondController]); // Is 2
[self.view bringSubviewToFront:viewController];
NSLog(#"%d", [[self.view subviews] indexOfObject:viewController]);
[self.view sendSubviewToBack:viewController];
NSLog(#"%d", [[self.view subviews] indexOfObject:viewController]);
[self.view bringSubviewToFront:secondController];
NSLog(#"%d", [[self.view subviews] indexOfObject:secondController]);
SecondViewController * secondController = [[[SecondViewController alloc] init]autorelease];
secondController.view.frame = CGRectMake(0, 0, 320, 480);
[self.view addSubview:secondController.view];
[self.view addSubview:toolbar];
}
Any ideas why the view is appearing as totally black with toolbar.
The default background color of views is nil, which is a transparent background.
If you have nothing in any of the views and set no background color for any of them, the default background of the window or the device will show through. I didn't see it in the documentation, but I am assuming it is black.
Also, you have defined UIView pointers, but named them with the word "controller". This can contribute to mistakes since a UIViewController is an entirely different object. The UIViewController contains a UIView and interacts with it, but it is not a UIView, nor does it inherit from one.
Here're some view controller I have: tabBarController, navigationBarController, viewController, and imageView.
The hierarchy is that: tabBarController is the root controller, it includes navigationBarController. And the viewController(which is include the imageView) is pushed in by navigationBarController.
So the question is, when I touched the imageView, how to resize it to fullscreen with smooth animation. Note, I don't want to hide NavigationBar & TabBar.
I tried it by setFrame, however, it is covered by navigationBarController and tabBarController.
I tried presentModalViewController: but it lose continuity.
I also tried to reset rootViewController to viewController, but the resulted with a broken animation. :(
Thanks for any suggestion!
Test code
UIViewController * viewController = [[UIViewController alloc] init];
[viewController.view setFrame:CGRectMake(0.0f, 0.0, 320.0f, 480.0f)];
[viewController.view setBackgroundColor:[UIColor redColor]];
UIImageView * imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 320.0f, 480.0f)];
[imageView setBackgroundColor:[UIColor yellowColor]];
[imageView setUserInteractionEnabled:YES];
[viewController.view addSubview:imageView];
[imageView release];
UINavigationController * navigationController = [[UINavigationController alloc] initWithRootViewController:viewController];
[viewController release];
UIViewController * anotherTabViewController = [[UIViewController alloc] init];
[anotherTabViewController.view setFrame:CGRectMake(0.0f, 0.0, 320.0f, 480.0f)];
[anotherTabViewController.view setBackgroundColor:[UIColor blueColor]];
UITabBarController * tabBarController = [[UITabBarController alloc] init];
tabBarController.viewControllers = [NSArray arrayWithObjects:navigationController, anotherTabViewController, nil];
[navigationController release];
[anotherTabViewController release];
[self.window setRootViewController:tabBarController];
Here I write a simple code for testing. Now don't care about the touch action. I wonder how to set the imageView to totally fullscreen(width:320, height:480). But it's clipped by navigation bar and tab bar. I know the frame is relative to its super view. How to deal with this issue?
try to add img to you window, when you need to resize it to full screen:
UIImageView *img; //create new image
img = yourImageView;
[img setOrigin:CGPointMake(yourImageView.frame.origin.x, yourImageView.frame.origin.y+90)];
//window size is bigger, so to set an image frame visionary at same place, you need to set origin point lower
MOEAppDelegate *sharedAppDelegate = (MOEAppDelegate *)[[UIApplication sharedApplication] delegate];
[sharedAppDelegate.window addSubview:img];
[UIView animateWithDuration:1
animations:^{
[img setFrame:CGRectMake(0,
0,
320,
480)];
}];
Note, that your self.view's frame automatically resized when you adding tabBar or navigationBar, and in -(void)viewDidLoad it is NOT resized jet!
I am trying to add the UIButton to UIScrollView.
I have added the UIImageView with background image *(size: 320 * 620)*.
Then I added this UIImageView to UIScrollView, and It works fine.
But now I want to add UIButton at position at : (60, 500); (below screen that would appear after scrolling).
I have tried following code, but the button is added on UIView not on scrollview. Button is not getting displayed on the top.
Code :
- (void)viewDidLoad
{
[super viewDidLoad];
self.navigationController.navigationBar.hidden = TRUE;
UIImageView *tempImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"SingleModelVar.png"]];
self.imageView = tempImageView;
[tempImageView release];
imageView.userInteractionEnabled = YES;
scrollView=[[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 460)]; //fit to screen
//scrollView.delaysContentTouches = NO;
scrollView.contentSize = CGSizeMake(320, imageView.frame.size.height); //imageView.frame.size.height=620 here
scrollView.maximumZoomScale = 4.0;
scrollView.minimumZoomScale = 0.75;
scrollView.clipsToBounds = YES;
scrollView.delegate = self;
//The Problem begins ..........
btnStartDate=[[UIButton alloc] initWithFrame:CGRectMake(60,500,100,20)];
[scrollView addSubview:btnStartDate];
//[self.view addSubview:btnStartDate];
btnEndDate=[[UIButton alloc] initWithFrame:CGRectMake(60,530,100,20)];
[scrollView addSubview:btnEndDate];
//[self.view addSubview:btnEndDate];
[scrollView addSubview:imageView];
[[self view] addSubview:scrollView];
}
it is not displayed at the top because you added them before you added the imageView.
Put [scrollView addSubview:imageView]; before btnStartDate=[[UIButton alloc] initWithFrame:CGRectMake(60,500,100,20)];