Save and load UIImageView - ios

Question

I want to save and load image in UIImageView
I have already tried some code but it doesn't work.
The Code i have tried:
Save:
UIImage *image = ...;
NSString *cachedFolderPath = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
NSString *cachedImagePath = [cachedFolderPath stringByAppendingPathComponent:#"image.png"];
[UIImagePNGRepresentation(image) writeToFile:cachedImagePath atomically:YES];
Load:
NSString *cachedFolderPath = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
NSString *cachedImagePath = [cachedFolderPath stringByAppendingPathComponent:#"image.png"];
UIImage *image = [UIImage imageWithData:[NSData dataWithContentsOfFile:cachedImagePath]];
But these code doesn't work!

Answer 1

I hope you want to save image in document directory folder
here is the way to save image:
- (void)saveImage: (UIImage*)image
{
if (image != nil)
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString* path = [documentsDirectory stringByAppendingPathComponent:
[NSString stringWithString: #"test.png"] ];
NSData* data = UIImagePNGRepresentation(image);
[data writeToFile:path atomically:YES];
}
}
to get image from document directory:
- (UIImage*)loadImage
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString* path = [documentsDirectory stringByAppendingPathComponent:
[NSString stringWithString: #"test.png"] ];
UIImage* image = [UIImage imageWithContentsOfFile:path];
return image;
}
Hope this will help

Answer 2

Globally declare imageView
UIImageView *imageView;//if u create imageView in interfaceBuilder. then u can replace this line by creating outlet of ur imageView
for loading image:
//Loading image in imageView
NSString *cachedFolderPath = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
NSString *cachedImagePath = [cachedFolderPath stringByAppendingPathComponent:#"image.png"];
NSFileManager *fileManager = [NSFileManager defaultManager];
if ([fileManager fileExistsAtPath:cachedImagePath])
{
UIImage *image = [UIImage imageWithData:[NSData dataWithContentsOfFile:cachedImagePath]];
if (image)
{
imageView = [[UIImageView alloc]init];//Dont do this, if u created imageView using interFace builder
[imageView setFrame:CGRectMake(50, 100, 200, 200)];//Dont do this, if u created imageView using interFace builder
[self.view addSubview:imageView];//Dont do this, if u created imageView using interFace builder
[imageView setImage:image];
}
else
{
NSLog(#"Unsupported File");
}
}
else
{
NSLog(#"Image not Found in the path");
}
for saving image:
UIImage *image = imageView.image;
if (image)
{
NSString *cachedFolderPath = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
NSString *cachedImagePath = [cachedFolderPath stringByAppendingPathComponent:#"imageSaved.png"];
[UIImagePNGRepresentation(image) writeToFile:cachedImagePath atomically:YES];
NSFileManager *fileManager = [NSFileManager defaultManager];
if ([fileManager fileExistsAtPath:cachedImagePath])
{
NSLog(#"File Created");
}
}
else
{
NSLog(#"No image to save");
}