how to load image to uiimageview from a custom folder
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0]; // Get documents folder
NSString*ext= [NSString stringWithFormat:#"/Imagenes/30775.png"];
NSString *dataPath = [documentsDirectory stringByAppendingPathComponent:ext];
//option 1
UIImage * myImage = [UIImage imageWithContentsOfFile: dataPath];
_img.image = myImage
///option 2
UIImageView * myImageView = [[UIImageView alloc] initWithImage: myImage];
_img = myImageView;
///option 3
NSData *imgData = [[NSData alloc] initWithContentsOfURL:[NSURL fileURLWithPath:dataPath]];
_img.image = [UIImage imageWithData:imgData];
i try 3 options but not working
any idea ?
the image is loading from a custom folder
i checked the path and is correct but not load
Your path #"/Imagenes/30775.png" seems to be wrong. Double check it. Otherwise following should work
UIImage * myImage = [UIImage imageWithContentsOfFile: dataPath];
_img.image = myImage
NSString*ext= [NSString stringWithFormat:#"/Imagenes/30775.png"];
Your path is wrong.I guess the Imagenes is a group in your project. So xcode is not create a folder in your project main folder. The groups is only helps you to view the files easily in the xcode program.
Also you don't need stringWithFormat.
Try this;
NSString*ext= #"30775.png";
Related
I have written code to open image files after studying answers to the questions found here (a, b, c, d, e, f & g). But NSFileManager is unable to find them even though I added the png files to the project. I'm reasonably confident my code should be able to recognise either of the png files if they were in the right directory.
e.g.
- (void)viewDidLoad {
[super viewDidLoad];
NSFileManager *fileManager = [[NSFileManager alloc] init];
NSArray *dirPaths;
NSString *docsDir;
dirPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
docsDir = [dirPaths objectAtIndex:0];
NSLog(#"\ndirPaths %# \n\ndocsDir \n%#", dirPaths, docsDir);
NSString *imageFilePath = [docsDir stringByAppendingPathComponent:#"iTunesArtwork1024.png"];
NSLog(#"\n\nfile path should be \n\n%# \n\n", imageFilePath);
NSData *imageData = [NSData dataWithContentsOfFile:imageFilePath];
if ([fileManager fileExistsAtPath:imageFilePath])
{
NSLog(#"\nFound file path : %#", imageFilePath);
}
else
{
NSLog(#"\nImage file not found");
}
UIImage *image = [UIImage imageWithData:imageData];
UIImageView *logo = [[UIImageView alloc] init];
logo.image = image;
[self.view addSubview:logo];
}
But here is the log in the debug window
2017-07-14 18:26:35.679 IconShape[1089:348564]
dirPaths (
"/Users/gs/Library/Developer/CoreSimulator/Devices/57279C80-0937-4658-B0E6-7984B3768D56/data/Containers/Data/Application/18235DBF-7ADB-47D4-AFF9-282D02F2A0F8/Documents"
)
docsDir
/Users/gs/Library/Developer/CoreSimulator/Devices/57279C80-0937-4658-B0E6-7984B3768D56/data/Containers/Data/Application/18235DBF-7ADB-47D4-AFF9-282D02F2A0F8/Documents
2017-07-14 18:26:35.679 IconShape[1089:348564]
file path should be
/Users/gs/Library/Developer/CoreSimulator/Devices/57279C80-0937-4658-B0E6-7984B3768D56/data/Containers/Data/Application/18235DBF-7ADB-47D4-AFF9-282D02F2A0F8/Documents/iTunesArtwork1024.png
2017-07-14 18:26:35.679 IconShape[1089:348564]
Image file not found
Here is the state of the project after two png files were added.
Yet the log shows they are not visible to NSFileManager. So where would they be found ? i.e. what changes do I need to make to my code in order to find them ?
EDIT
This draft finds the png file following Subramanian's recommendation.
- (void)viewDidLoad {
[super viewDidLoad];
NSFileManager *fileManager = [[NSFileManager alloc] init];
NSString *imageFilePath = [[NSBundle mainBundle]pathForResource:#"iTunesArtwork1024" ofType:#"png"];
if ([fileManager fileExistsAtPath:imageFilePath])
{
NSLog(#"\nFound file path : %#", imageFilePath);
}
else
{
NSLog(#"\nImage file not found");
}
UIImage *image = [UIImage imageNamed:#"iTunesArtwork1024.png"];
UIImageView *logo = [[UIImageView alloc] initWithFrame:CGRectMake(100, 100, 50, 50)];
logo.image = image;
[self.view addSubview:logo];
}
The log now reads
Found file path : … .app/iTunesArtwork1024.png
and the image also appears in the subview.
__
Image is not in theDocument Directory, It's inside the bundle.
You have added the image files inside the project. But You are checking the image on Document Directory, Which is wrong. Image is inside app bundle.
You can simply assign the Image to UIImageView by the name of the image.
UIImage *image = [UIImage imageNamed:#"iTunesArtwork1024.png"];
UIImageView *logo = [[UIImageView alloc] init];
logo.image = image;
If you want to get the path of the image, then you have to use [NSBundle mainBundle]
[[NSBundle mainBundle]pathForResource:#"iTunesArtwork1024" ofType:#"png"];
You can access images with names which are added in projects. Try with below code
UIImage *image = [UIImage imageNamed:#"iTunesArtwork1024.png"];
The path where your are looking for the image is inside your device (real or simulator).
To load an image that is stored in your XCode project just do:
UIImage* image = [UIImage imageNamed:#"iTunesArtwork1024.png"];
So I have an image saved from the camera roll or camera and have a saved the directory and image name to reference back to. When I go back to where I want that image to show it won't. It's just a blank image view.
I seem like it should be straight forward and I have done my own research, but no answer seems to be working for me.
Below is the image path and the code I am using to try and show the image. What am I doing wrong here?
/Users/*****/Library/Developer/CoreSimulator/Devices/FA19C634-C029-4518-BAE1-E7CC601FB9C2/data/Containers/Data/Application/72B5C82B-A8FB-451D-A6DC-DF2C3F3ED12D/Documents/Profile Pics/CYKGXryEDj-1.jpg
self.imageView.image = [UIImage imageWithContentsOfFile:profileImg];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsPath = [paths objectAtIndex:0]; //Get the docs directory
NSString *filePath = [documentsPath stringByAppendingPathComponent:#"image.png"]; //Add the file name
NSData *pngData = [NSData dataWithContentsOfFile:filePath];
UIImage *image = [UIImage imageWithData:pngData];
I did only one time using AVFoundation framework -
I was saving images as data and showing them by using imageWithData method. hope this will help you.
I have a group of images saved in my DOcuments folder of the app. I got it to save to that location, I am having trouble loading from that location.
I got the UIimageView working hardcoded with images I dragged to a folder in the project with the code below in the viewDidLoad() method and when i ran the simulator it appeared.
UIImageView *bottomPic = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"pants.png"]];
bottomPic.frame = CGRectMake(65, 279, 200, 250);
[self.view addSubview:bottomPic];
[bottomPic release];
However when I want to load the image from the Documents Directory nothing loads - Am confused and couldn't find any exact information to help me out on this situation.. This is currently what I have and when I run it doesn't throw any errors but no image appears. Am I missing something in my code? (I'm new to objective-c!)
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentationDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:#"bottom1A2A6520-F556-436F-A1BC-D430223DC890-33098-00014708AE7E370F.png"]];
UIImage *image = [UIImage imageWithContentsOfFile:path];
UIImageView *bottomPic = [[UIImageView alloc] initWithImage:[UIImage imageNamed:path]];
bottomPic.frame = CGRectMake(65, 279, 200, 250);
[bottomPic setImage:image];
[self.view addSubview:bottomPic];
[bottomPic release];
A path is a path and an image is an image.
UIImage *image = [UIImage imageWithContentsOfFile:path];
UIImageView *bottomPic = [[UIImageView alloc] initWithImage:image];
Your code has a few issues. Try this:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentationDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = paths[0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"bottom1A2A6520-F556-436F-A1BC-D430223DC890-33098-00014708AE7E370F.png"];
UIImage *image = [UIImage imageWithContentsOfFile:path];
UIImageView *bottomPic = [[UIImageView alloc] initWithImage:image];
bottomPic.frame = CGRectMake(65, 279, 200, 250);
[self.view addSubview:bottomPic];
[bottomPic release];
Unrelated to the problem, you were needlessly using stringWithFormat:.
The real problem was creating the UIImageView with an unneeded image using imageNamed:.
If this doesn't work then verify that path actually represents a file that really exists in the Documents folder. Verify image isn't nil.
Also consider use ARC (automatic reference counting) to make your life a lot easier.
Update: It appears you needed NSDocumentDirectory instead of NSDocumentationDirectory.
I currently have the ability to take a photo or load from the camera and place an image in the UIImageView in my app be i want the ability to have a button that will save the image so when i reload the app the image is still in the UIImageView.
My though was a button to save the image once you have loaded it and in the
-(void)viewDidLoad
have the code to load the image that was saved but i don't know how to approach this.
Any help would be fantastic.
You can convert images to NSData using either UIImagePNGRepresentation or UIImageJPGRepresentation, then save the data to file calling one of NSData's writeToFile... methods.
Then when you restart your application, you can get the image by calling [UIImage imageWithData:[NSData dataWithContentsOfFile:filePath]]
-- EDIT --
Save image
UIImage *image = ...;
NSString *cachedFolderPath = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
NSString *cachedImagePath = [cachedFolderPath stringByAppendingPathComponent:#"image.png"];
[UIImagePNGRepresentation(image) writeToFile:cachedImagePath atomically:YES];
Load image
NSString *cachedFolderPath = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
NSString *cachedImagePath = [cachedFolderPath stringByAppendingPathComponent:#"image.png"];
UIImage *image = [UIImage imageWithData:[NSData dataWithContentsOfFile:cachedImagePath]];
I used NSCachesDirectory since I'm assuming you don't want to have this image backed up (either through iCloud or iTunes). If you do then you'd want to use NSDocumentDirectory instead.
I'm taking screenshots and writing them to file with this code:
if ([[UIScreen mainScreen] respondsToSelector:#selector(scale)])
UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, NO, [UIScreen mainScreen].scale);
else
UIGraphicsBeginImageContext(self.view.bounds.size);
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData * data = UIImagePNGRepresentation(image);
NSArray *directories = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [directories objectAtIndex:0];
NSString *key = [documentsDirectory stringByAppendingPathComponent:#"screenshots.archive"];
NSMutableArray *storageArray = [NSMutableArray arrayWithContentsOfFile:key];
if(!storageArray)
storageArray = [NSMutableArray arrayWithObject:data];
else
[storageArray addObject:data];
[storageArray writeToFile:key atomically:YES];
When i load the images again i do this:
pics = [[NSArray alloc] initWithContentsOfFile:[self dataFilePath]];
ScreenshotViewController *scv = [[ScreenshotViewController alloc]init];
[[self navigationController]pushViewController:scv animated:YES];
NSInteger row = indexPath.row;
[scv setImage:[pics objectAtIndex:row]];
dataFilePath method:
- (NSString *)dataFilePath
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
return [documentsDirectory stringByAppendingPathComponent:#"screenshots.archive"];
}
The problem is that that the UIImageView, in the ScreenshotViewController remains blank. I have tested all kinds of things, and it is something about the way the images get saved/loaded into the array, but i'm not sure. I have also tested that the actual screenshot part is working by putting it into a UIImageView right away and adding it to the view.
NOTE:
If i change this
[scv setImage:[pics objectAtIndex:row]];
to this
[scv.myUIImageView setImage:[pics objectAtIndex:row]];
i get this exception: [__NSCFData _isResizable]: unrecognized selector sent to instance 0x847a280.
Whats the correct way of setting the image by?
Wow it got abit messy, hope its readable.
At first glance, and assuming your read/write code is correct, you are saving the image with PNG representation.
Thus, when reading, you will need to create a UIImage like this:
UIImage * myPic = [UIImage imageWithData:[pics objectAtIndex:row]];
Then try showing that image