How to set image to UIImage

Question

How can I set image to UIImage object  For example   UIImage  img     UIImage alloc  init    img setImage  UIImage imageNamed   anyImageName       My UIImage object is declared in  h file and allocated in init method  I need to set image in viewDidLoad method  Any ideas

User · Answer

just change this line    img setImage  UIImage imageNamed   anyImageName       with following line  img    UIImage imageNamed   anyImageName

User · Answer

First declare UIImageView and give it frame  UIImageView  imageView     UIImageView alloc  initWithFrame  CGRectMake  10 0f  15 0f  40 0f 40 0f              imageView setBackgroundColor   UIColor clearColor             imageView setImage  UIImage imageNamed   comments profile image png              self view addSubview  imageView

User · Answer

Like vikingosgundo said  but keep in mind that if you use  UIImage imageNamed image  then the image is cached and eats away memory  So unless you plan on using the same image in many places  you should load the image  with imageWithContentsOfFile  and imageWithData   This will save you significant memory and speeds up your app

User · Answer

UIImage  img    UIImage imageNamed  aImageName

User · Answer

Try this code to 100  work      UIImageView   imageview     UIImageView alloc  initWithFrame CGRectMake 20 100  80  80    imageview image    UIImage imageNamed   myimage jpg     self view  addSubview imageview

User · Answer

may be   UIImage  img     UIImage alloc  init     and when you want to change the image   img    UIImage imageNamed   nameOfPng png      but the object wasn t in the same place in the memory  but if you use the pointer  the same pointer will be point to the last image loaded

User · Answer

There is an error on this line    img setImage  UIImage imageNamed  anyImageName        It should be    img setImage  UIImage imageNamed   anyImageName

User · Answer

UIImage  img    UIImage imageNamed   anyImageName         imageNamed        Returns the image object associated with the specified filename          UIImage   imageNamed  NSString   name       Parameters   name       The name of the file  If this is the first time the image is being loaded  the method looks for an image with the specified name in the   application   s main bundle    Return Value       The image object for the specified file  or nil if the method could not find the specified image       Discussion       This method looks in the system caches for an image object with the specified name and returns that object if it exists  If a matching   image object is not already in the cache  this method loads the image   data from the specified file  caches it  and then returns the   resulting object

User · Answer

Create a UIImageView and add UIImage to it   UIImageView  imageView     UIImageView alloc  initWithImage  UIImage imageNamed   image Name        Then add it to your view     self view addSubView  imageView

User · Answer

You can set an Image in UIImage object eiter of the following way    UIImage  imageObject    UIImage imageNamed   imageFileName    but by initializing UIImage Object like this  the image is always stored in cache memory even you make it nil like imageObject nil    Its better to follow this    NSString  imageFilePath     NSBundle mainBundle  pathForResource   imageFilename  ofType   imageFile Extension     UIImage  imageObject    UIImage imageWithContentsOfFile imageFilePath      EXAMPLE   NSString  imageFilePath     NSBundle mainBundle  pathForResource   abc  ofType   png     UIImage  imageObject    UIImage imageWithContentsOfFile imageFilePath

User · Answer

You can t alloc UIImage  this is impossible  Proper code with UIImageView allocate   UIImageView   image     UIImageView alloc  initWithImage  UIImage imageNamed   something png        Draw image   CGContextDrawImage context  rect   image image CGImage

User · Answer

Just Follow This  UIImageView  imgview     UIImageView alloc initWithFrame CGRectMake 10  10  300  400     imgview setImage  UIImage imageNamed   YourImageName      imgview setContentMode UIViewContentModeScaleAspectFit    self view addSubview imgview

[objective-c] How to set image to UIImage

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