CODEWITHSUNDEEP
iosobjective-cnsuserdefaults
User558
User558

Reputation: 1175

How to Store the image in NSUserDefaults?

facing with one problem,How to store images in NSUserDefaults that image contains url like this (www.example.com/1.png),how to store that images help me please. Here is my code,

listBannerArray =[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];

imageArray = [listBannerArray valueForKey:@"mainbanner"];
NSLog(@"%@",imageArray);

NSUserDefaults *imageDefaults = [NSUserDefaults standardUserDefaults];
        [imageDefaults setObject:imageArray forKey:@"kPrefKeyForMainBanner"];
        NSLog(@"image :%@",[imageDefaults objectForKey:@"kPrefKeyForMainBanner"]);

Here listBannerArray is my total response and imageArray is my images array. Please help!

Thanks in advance.

Upvotes: 0

Views: 1112

Answers (3)

Mohammad Asif
Mohammad Asif

Reputation: 91

You can store and retrieve an image from NSUserDefaults like this:

NOTE:-

1.If you have UIImage object then you need to use UIImagePNGRepresentation to store .png image.

2.For .jpg/.jpeg UIImageJPEGRepresentation( lossy compression)if you use a compressionQuality value smaller than 1.0, you can lose some image quality. 

[[NSUserDefaults standardUserDefaults]setObject:UIImagePNGRepresentation(image) forKey:@"yourKey"];

To retrieve an image from NSUserDefaults you can get it from NSData:

NSData* imageData = [[NSUserDefaults standardUserDefaults] objectForKey:@"yourKey"]; 
UIImage* image = [UIImage imageWithData:imageData];

Upvotes: 0

Femina Brahmbhatt
Femina Brahmbhatt

Reputation: 654

To save an image in NSUserDefaults:

[[NSUserDefaults standardUserDefaults]setObject:UIImagePNGRepresentation(image) forKey:key];

To retrieve an image from NSUserDefaults:

NSData* imageData = [[NSUserDefaults standardUserDefaults] objectForKey:key];
UIImage* image = [UIImage imageWithData:imageData];

Upvotes: 3

keyv
keyv

Reputation: 2470

You can read how to do such thing in this post, but again - it's not the best practice to do.

For correct approach, check this, for example.

Upvotes: 1

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