how to load appropriate Default.png to UImageView? - ios

Question

I have Default splash screens with the names:
Default-568h#2x.png, Default-Portrait.png, Default.png, Default#2x.png and so on for all types of devices.
I know that the system automatically selects the appropriate splash screen for the specific device and displays it.
The questions: is it possible to know which image the system selected? How to load the appropriate image selected by the system to the UIimageView.
I tried this:
UIImageView *splashView=[[UIImageView alloc] initWithFrame:CGRectMake(0, 0, screenWidth, screenHeight)];
splashView.image=[UIImage imageNamed:#"Default.png"];
But it loads only the image with name Default.png for all types of devices(iPhone 4, 5, iPad).
Do i need to manage it manually? I mean to load the appropriate image after identifying the device type?

Answer 1

I found this question after running into the same problem. Seems that if you use [UIImage imagedNamed:#"Default"]; iOS will detect retina versus non-retina and apply the #2x but it won't detect an iPhone 5 and apply the -568h
The solution I came up with was to write a category on UIImage that checks the main window's height and returns the appropriate image if it exists:
#interface UIImage (Compatible)
+ (UIImage *)compatibleImageNamed:(NSString *)name;
#end
#implementation UIImage (Compatible)
+ (UIImage *)compatibleImageNamed:(NSString *)name {
if ([[UIScreen mainScreen] bounds].size.height==568.0){
NSString *extension = [name pathExtension];
NSString *iPhone5Name = [[name stringByDeletingPathExtension] stringByAppendingString:#"-568h"];
if (extension.length!=0)
iPhone5Name = [iPhone5Name stringByAppendingPathExtension:extension];
UIImage *image = [UIImage imageNamed:iPhone5Name];
if (image)
return image;
}
return [UIImage imageNamed:name];
}
#end
Then wherever I know I want to load an image that also has an iPhone 5 version I use:
[UIImage compatibleImageNamed:#"MyImage"];

Answer 2

I did it manually for all splash screens:
CGRect screenRect = [[UIScreen mainScreen] bounds];
float screenWidth = screenRect.size.width;
float screenHeight = screenRect.size.height;
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
splashView=[[UIImageView alloc] initWithFrame:CGRectMake(0, 0, screenWidth, screenHeight)];
if (screenHeight==568.0) {
splashView.image=[UIImage imageNamed:#"Default-568h#2x.png"];//iPhone 5
}else{
splashView.image=[UIImage imageNamed:#"Default.png"]; //other iPhones
}
} else {
splashView=[[UIImageView alloc] initWithFrame:CGRectMake(0, 20, screenWidth, screenHeight-20)];
splashView.image=[UIImage imageNamed:#"Default-Portrait.png"];// iPads
}

Answer 3

EDIT: check this and also this out.
U how use this line to provide splash screen whether u have retina or non-retina display
UIImageView *splashView =[[UIImageView alloc] initWithImage:[UIImage imageNamed:#"Default.png"]];
Application detects device display takes image accordingly.
If device has retina display then it takes Default#2x.png automatically.

Answer 4

You should change this:
[UIImage imageNamed:#"Default.png"];
to
[UIImage imageNamed:#"Default"];