I have drawable text which is used for signature ,
I want this context save in png format with a specific path but I could not do this.I want my draw image save in png format and I can use any where
**Code for png format and path**
NSData *imageData = UIImagePNGRepresentation(_SignatureView.signatureImage);
NSString *imagePath = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingPathComponent:#"/imageName.png"];
[imageData writeToFile:imagePath atomically:YES];
_SignatureView is a property and signatureImage is a method
**code of signature image method**
- (UIImage *)signatureImage
{
if (!self.hasSignature)
return nil;
UIImage *screenshot = [self snapshot];
return screenshot;
}
NSString *docPath= #"/Users/.../.../";
NSString *filePath=[docPath stringByAppendingPathComponent:#"PdfFileName.pdf"];
NSMutableData pdfData=[NSMutableData data];
CGRect bounds = CGRectMake(0, 0, 612, 792);
UIGraphicsBeginPDFContextToData(pdfData, bounds, nil);
CGContextRef pdfContext = UIGraphicsGetCurrentContext();
UIGraphicsBeginPDFPage();
[YourSignature.layer renderInContext:pdfContext];
UIGraphicsEndPDFContext();
[pdfData writeToFile:filePath atomically:YES];
Try like this
- (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];
}
}
and to get the image use the following code
- (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;
}
Related
It is my save method :
-(NSString *)saveImage:(UIImage *)image
{
NSInteger RandomIndex = arc4random() % 1000;
NSString *randomImageName =[NSString stringWithFormat:#"Image%i.png",RandomIndex];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *savedImagePath = [documentsDirectory stringByAppendingPathComponent:randomImageName];
if ([[NSFileManager defaultManager] fileExistsAtPath:savedImagePath]) {
[[NSFileManager defaultManager] removeItemAtPath:savedImagePath error:nil];
NSLog(#"file removed from path");
}
NSLog(#"Saved Image Path : %#",savedImagePath);
NSData* imageData = UIImagePNGRepresentation (image);
[imageData writeToFile:savedImagePath atomically:YES];
self.teamLogo = savedImagePath;
return savedImagePath;
}
I try to load image and put into control :
NSData *myData = [NSData dataWithContentsOfFile:self.team.logo];
UIImage *selectedImage = [UIImage imageWithData:myData];
self.team.logo is from DB. I keep string in base. In debug mode i got this string :
/var/mobile/Containers/Data/Application/7CD69EC9-9C20-48EE-B611-FC2353BC31B0/Documents/Image364.png
and myData is still nil. Do you have idea why ?
Starting from IOS 8 layout of containers changed. So don't store full path to your DB. Instead just store your image name. For recalling the image use:
NSString *temp = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject] stringByAppendingPathComponent:#"Image364.png"];
NSData *myData = [NSData dataWithContentsOfFile:temp];
UIImage *selectedImage = [UIImage imageWithData:myData];
I hope it helps.
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!
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
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");
}
I'm trying to take screenshot playing video but the screenshot always is showing blank. This is my code:
UIGraphicsBeginImageContext(self.view.bounds.size);
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData *data = UIImageJPEGRepresentation(viewImage, 1.0);
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsPath = [paths objectAtIndex:0];
NSString *filePath = [documentsPath stringByAppendingPathComponent:#"image.jpg"];
[data writeToFile:filePath atomically:YES];
I'm using AVPlayer/AVPlayerLayer to play the video.
Any of you knows why this happening? or if I need to do something special with video to be able to take the screenshot?
I'll really appreciate your help.
I found a solution to my problem:
AVAssetImageGenerator *imageGenerator = [AVAssetImageGenerator assetImageGeneratorWithAsset:[self.player.currentItem asset]];
CGImageRef ref = [imageGenerator copyCGImageAtTime:self.player.currentItem.currentTime actualTime:nil error:nil];
UIImage *viewImage = [UIImage imageWithCGImage:ref];
CGImageRelease(ref);
NSData *data = UIImageJPEGRepresentation(viewImage, 1.0);
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsPath = [paths objectAtIndex:0];
NSString *filePath = [documentsPath stringByAppendingPathComponent:#"image.jpg"];
[data writeToFile:filePath atomically:YES];
I have .png images in the Documents folder of my app but when i try to load them it don't work :/
I have this class for the methods for saving and loading :
UIImage+loadScan.h :
#import <UIKit/UIKit.h>
#interface UIImage (loadScan)
- (void)saveScan:(NSString*)name;
- (UIImage *)loadScan:(NSString*)name;
#end
.m :
#import "UIImage+loadScan.h"
#implementation UIImage (loadScan)
#pragma SAVE AND LOAD
- (void)saveScan:(NSString*)name{
if (self != nil)
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString* path = [documentsDirectory stringByAppendingPathComponent:
[NSString stringWithString:name] ];
NSData* data = UIImagePNGRepresentation(self);
[data writeToFile:path atomically:YES];
}
}
- (UIImage *)loadScan:(NSString*)name{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString* path = [NSString stringWithFormat:#"%#/%#", documentsDirectory, name];
NSLog(#"loading %#", path);
NSData *imgData = [NSData dataWithContentsOfFile:path];
UIImage *image = [[UIImage alloc] initWithData:imgData];
//UIImage *image = [UIImage imageWithContentsOfFile:path];
return image;
}
#end
The method saveScan work good :
[image saveScan:[NSString stringWithFormat:#"%#.png", imgName]];
But loadScan don't want to work :
UIImage *imageLoad = [[UIImage alloc] init];
[imageLoad loadScan:[NSString stringWithFormat:#"%#.png", imgName]];
cell.imageScan.image = imageLoad;
I don't understand why, yet the file exist.
Thanks
I have found a (strange) method, but it work (i send the UIImage also un parametter and init it in the method) :
- (UIImage *)loadScan:(NSString*)name theImage:(UIImage*)theImg{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString* path = [NSString stringWithFormat:#"%#/%#", documentsDirectory, name];
NSLog(#"loading %#", path);
[theImg initWithContentsOfFile:path];
return theImg;
}
Call with :
UIImage *imageLoad = [UIImage alloc];
[imageLoad loadScan:[NSString stringWithFormat:#"%##2x.png", imgName] theImage:imageLoad];
Now imageLoad have the image data and we can show it !
I have Five buttons.On each button action.I have open gallery and choose an image.But the problem is on each button action same path is coming.
UIImage* image = [info valueForKey:#"UIImagePickerControllerOriginalImage"];
NSData* imageData = UIImagePNGRepresentation(image);
NSString * imageName = #"Myimage.png";
NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString* documentsDirectory = [paths objectAtIndex:0];
NSString* fullPathToFile = [documentsDirectory stringByAppendingPathComponent:imageName];
NSLog(#"fullPathToFile=%#",fullPathToFile); //important line
[imageData writeToFile:fullPathToFile atomically:NO];
Set global variable initially int countVal = 1;
NSString * imageName = [NSString stringWithformat:#"%d.png",countVal]; // Imgae_name set here
NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString* documentsDirectory = [paths objectAtIndex:0];
NSString* fullPathToFile = [documentsDirectory stringByAppendingPathComponent:imageName];
NSLog(#"fullPathToFile=%#",fullPathToFile); //important line
[imageData writeToFile:fullPathToFile atomically:NO];
count +=1; // Increment count here
I may be missing something, but it looks like you're using the same name for the image each time: Myimage.png. Every time the image will be saved inside the documents directory with that same name. Maybe add a tag to each button and use that to distinguish each of the 5 different images?
May be it will helpful for u
[picker dismissModalViewControllerAnimated:YES];
imageView.image= [info objectForKey:#"UIImagePickerControllerOriginalImage"];
NSData *webData = UIImagePNGRepresentation(imageView.image);
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *localFilePath = [documentsDirectory stringByAppendingPathComponent:png];
[webData writeToFile:localFilePath atomically:YES];
NSLog(#"localFilePath.%#",localFilePath);
UIImage *image = [UIImage imageWithContentsOfFile:localFilePath];
OR
Use this code
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *savedImagePath = [documentsDirectory stringByAppendingPathComponent:#"savedImage.png"];
imageView.image= [info objectForKey:#"UIImagePickerControllerOriginalImage"];
NSData *webData = UIImagePNGRepresentation(imageView.image);
[imageData writeToFile:savedImagePath atomically:NO];
NSLog(#"localFilePath.%#",localFilePath);
If you still get it empty then try by checking if NSData is created properly
NSLog(#"webData.%#",webData);
OR
Try this: I hope defnetly it will be be helpful to you
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *img = [info objectForKey:UIImagePickerControllerEditedImage];
//you can use UIImagePickerControllerOriginalImage for the original image
//Now, save the image to your apps temp folder,
NSString *path = [NSTemporaryDirectory() stringByAppendingPathComponent:#"upload-image.tmp"];
NSData *imageData = UIImagePNGRepresentation(img);
//you can also use UIImageJPEGRepresentation(img,1); for jpegs
[imageData writeToFile:path atomically:YES];
//now call your method
[self uploadMyImageToTheWebFromPath:path];
}
Try to use below code which just edited to you answer
The problem is only with saving image name,try to save it with different name
The below code will help you in saving image with diffrent name
note: put the tag value to diffrent button(5 buttons) and call bello method in its target
-(void)saveImage:(UIButton*)sender{
UIImage* image = [info valueForKey:#"UIImagePickerControllerOriginalImage"];
NSData* imageData = UIImagePNGRepresentation(image);
NSString * imageName =[NSString stringWithFormat:#"Myimage%d.png",sender.tag];
NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString* documentsDirectory = [paths objectAtIndex:0];
NSString* fullPathToFile = [documentsDirectory stringByAppendingPathComponent:imageName];
NSLog(#"fullPathToFile=%#",fullPathToFile); //important line
[imageData writeToFile:fullPathToFile atomically:NO];
}
by this you can save image with different name