i want to check a folder.if i found "test.jpeg" in "path" if it 's true i do nothing but if it false i have to download this picture like that
UIImage *image = [[UIImage alloc] initWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:[dico objectForKey:#"photo"]]]];
nomPhoto = [[cell.pseudo text]stringByReplacingOccurrencesOfString:#"\n" withString:#""];;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
NSString *document = [paths objectAtIndex:0];
filename = [NSString stringWithFormat:#"%#/%#.jpeg",document,nomPhoto];
NSData *data2 = [NSData dataWithData:UIImageJPEGRepresentation(image, 0.1f)];//1.0f = 100% quality
[data2 writeToFile:filename atomically:YES];
EDIT: i try this but don't work. the path is good
NSString* documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString* pict = [documentsPath stringByAppendingPathComponent :#"portos"];
BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:pict];
if (fileExists)
{
NSLog(#"file ok");
}else {
NSLog(#"file ko");
}
thx
Its already answered here.
BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:somePath];
If the file specified doesn't exist the CGImage property of UIImage will be nil.
if (image.CGImage) NSLog(#"file ok");
else NSLog(#"file ko");
Related
I am very new to iOS. I create PDF and load this PDF on UIWebView
now this time I want to save or download this PDF in iPhone when we tapped download button then all exits PDF supporter show like as open ibook ,open in chrome. This type of option show but when we tap any one then my application closed.
-(void)show_Button
{
NSArray *docDirectories = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docDirectory = [docDirectories objectAtIndex:0];
NSString *filePAth = [docDirectory stringByAppendingPathComponent:#"myPDF.pdf"];
NSLog(#"filePath = %#", filePAth);
NSURL *url2 = [NSURL fileURLWithPath:filePAth];
NSLog(#"url2 = %#", url2);
UIDocumentInteractionController *docContr = [UIDocumentInteractionController
interactionControllerWithURL:url2];
docContr.delegate=self;
[docContr presentOpenInMenuFromRect:CGRectZero inView:self.view animated:YES];
}
so how to save or download this pdf in Iphone please solve this problem....
I believe you can simple use the belo two line:
NSData *myFile = [NSData dataWithContentsOfURL:[NSURL URLWithString:#"your_url"]];
[myFile writeToFile:[NSString stringWithFormat:#"%#/%#", [[NSBundle mainBundle] resourcePath], #"yourfilename.pdf"] atomically:YES];
I hope this it will help you,
Saving the pdf into app
NSData * imageData = [[NSData alloc] initWithContentsOfURL: [NSURL URLWithString: path]];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *filePath = [[paths objectAtIndex:0] stringByAppendingPathComponent:#"pdfname.pdf"];
NSError *writeError = nil;
[imageData writeToFile:filePath options:NSDataWritingAtomic error:&writeError];
if (writeError) {
NSLog(#"Error writing file: %#", writeError); }
Getting the pdf from the NSDocument Directory
NSString *stringPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:0];
NSArray *filePathsArray = [[NSFileManager defaultManager] subpathsOfDirectoryAtPath:documentsDirectory error:&error];
for(int i=0;i<[filePathsArray count];i++)
{
NSString *strFilePath = [filePathsArray objectAtIndex:i];
if ([[strFilePath pathExtension] isEqualToString:#"pdf"])
{
NSString *pdfPath = [[stringPath stringByAppendingFormat:#"/"] stringByAppendingFormat:strFilePath];
NSData *data = [NSData dataWithContentsOfFile:pdfPath];
if(data)
{
UIImage *image = [UIImage imageWithData:data];
[arrayOfImages addObject:image];
}
}
}
i want to grab a file from the Documents Directory into a NSData Object, but if i do so my NSData is always NIL:
filepath = [[NSString alloc] init];
filepath = [self.GetDocumentDirectory stringByAppendingPathComponent:fileNameUpload];
NSData *data = [[NSFileManager defaultManager] contentsAtPath:filepath];
-(NSString *)GetDocumentDirectory{
fileMgr = [NSFileManager defaultManager];
homeDir = [NSHomeDirectory() stringByAppendingPathComponent:#"Documents"];
return homeDir;
}
at this point, i always get an exception that my data is NIL:
[request addRequestHeader:#"Md5Hash" value:[data MD5]];
i checked, there´s no File but i dunno why! I created that file before with:
NSMutableString *xml = [[NSMutableString alloc] initWithString:[xmlWriter toString]];
NSArray *paths = NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
//make a file name to write the data to using the documents directory:
NSMutableString *fileName = [NSMutableString stringWithFormat:#"%#/7-speed-",
documentsDirectory];
[xml writeToFile:fileName
atomically:NO
encoding:NSStringEncodingConversionAllowLossy
error:nil];
Solved it by:
[xml writeToFile:fileName
atomically:YES
encoding:NSUTF8StringEncoding
error:nil];
check file exists:
if([[NSFileManager defaultManager] fileExistsAtPath:filepath)
{
NSData *data = [[NSFileManager defaultManager] contentsAtPath:filepath];
}
else
{
NSLog(#"File not exits");
}
Swift 3 Version
let filePath = fileURL.path
if FileManager.default.fileExists(atPath: filePath) {
if let fileData = FileManager.default.contents(atPath: filePath) {
// process the file data
} else {
print("Could not parse the file")
}
} else {
print("File not exists")
}
I save in NSDocumentDirectory this way:
NSLog(#"%#", [info objectAtIndex:i]);
NSArray *paths = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory, NSUserDomainMask ,YES );
NSString *documentsDir = [paths objectAtIndex:0];
NSString *savedImagePath = [documentsDir stringByAppendingPathComponent:[NSString stringWithFormat:#"Images%d.png", i]];
ALAssetRepresentation *rep = [[info objectAtIndex: i] defaultRepresentation];
UIImage *image = [UIImage imageWithCGImage:[rep fullResolutionImage]];
//----resize the images
image = [self imageByScalingAndCroppingForSize:image toSize:CGSizeMake(256,256*image.size.height/image.size.width)];
NSData *imageData = UIImagePNGRepresentation(image);
[imageData writeToFile:savedImagePath atomically:YES];
I know how to delete all the images in NSDocumentDirectory.
But I was wondering on how to delete all of the images with the name of oneSlotImages.
Thanks
Try this ,just copy this code,your images with name oneSlotImages,will be removed from DocumentDirectory ,its just simple :
NSArray *directoryContents = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)lastObject] error:NULL];
if([directoryContents count] > 0)
{
for (NSString *path in directoryContents)
{
NSString *fullPath = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)lastObject] stringByAppendingPathComponent:path];
NSRange r =[fullPath rangeOfString:#"oneSlotImages"];
if (r.location != NSNotFound || r.length == [#"oneSlotImages" length])
{
[[NSFileManager defaultManager] removeItemAtPath:fullPath error:nil];
}
}
}
Have you looked at NSFileManager's methods? Maybe something like this called in a loop for all of your images.
[[NSFileManager defaultManager] removeItemAtPath:imagePath error:NULL];
Use like,
NSArray *dirFiles = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:strDirectoryPath error:nil];
NSArray *zipFiles = [dirFiles filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:#"self CONTAINS[cd] %#", #"oneSlotImages"]];
The array zipFiles contains the names of all the files we filtered. Thus by appending the filenames with complete path of document directory with in a loop, you can make the full filepath of all the filtered files in the array. Then you can use a loop and call the method of NSFileManager object like below
[fileManager removeItemAtPath: strGeneratedFilePath error: &err];
which removes the itm at path from the directory.
By this way you can filter out the filenames contains oneSlotImages. So you can prefer to delete this ones. Hope this helps you.
As this is an old question now and also above answers shows how to delete by image name.What if I want to delete everything from NSDocumentDirectory at one shot, use the below code.
// Path to the Documents directory
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
if ([paths count] > 0)
{
NSError *error = nil;
NSFileManager *fileManager = [NSFileManager defaultManager];
// Print out the path to verify we are in the right place
NSString *directory = [paths objectAtIndex:0];
NSLog(#"Directory: %#", directory);
// For each file in the directory, create full path and delete the file
for (NSString *file in [fileManager contentsOfDirectoryAtPath:directory error:&error])
{
NSString *filePath = [directory stringByAppendingPathComponent:file];
NSLog(#"File : %#", filePath);
BOOL fileDeleted = [fileManager removeItemAtPath:filePath error:&error];
if (fileDeleted != YES || error != nil)
{
// Deal with the error...
}
}
}
I have used the below function to store images locally in a folder created in document directory
NSError *error;
NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString* documentsDirectory = [paths objectAtIndex:0];
// FOR STORING IMAGE INTO FOLDER CREATED IN DOCUMENT DIRECTORY
NSString *dataPath = [documentsDirectory stringByAppendingPathComponent:#"/ImagesFolder"];
if (![[NSFileManager defaultManager] fileExistsAtPath:dataPath])
[[NSFileManager defaultManager] createDirectoryAtPath:dataPath withIntermediateDirectories:NO attributes:nil error:&error];
NSData* imageData = UIImagePNGRepresentation(imageView.image);
NSString* incrementedImgStr = [NSString stringWithFormat:#"Image%d.png",delegate.dirCountImages];
NSString* fullPathToFile2 = [dataPath stringByAppendingPathComponent:incrementedImgStr];
[imageData writeToFile:fullPathToFile2 atomically:NO];
However how do i retrieve images from that particular folder in document directory
-(NSMutableArray*)getPhotoFileNames:(NSString*)parentFolderName
{
NSString *path = [NSString stringWithFormat:#"%#/%#",[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES)objectAtIndex:0], parentFolderName];
NSArray *dirContents = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:path error:nil];
NSEnumerator *enumerator = [dirContents objectEnumerator];
id fileName;
NSMutableArray *fileArray = [[NSMutableArray alloc] init];
while (fileName = [enumerator nextObject])
{
NSString *fullFilePath = [path stringByAppendingPathComponent:fileName];
NSRange textRangeJpg = [[fileName lowercaseString] rangeOfString:[#".png" lowercaseString]];
if (textRangeJpg.location != NSNotFound)
{
UIImage *originalImage = [UIImage imageWithContentsOfFile:fullFilePath];
[fileArray addObject:originalImage];
}
}
return fileArray;
}
Just need to have the full path and use this method. [[UIImage alloc]initWithContentsOfFile: <#path#>] remember to release the image after if you are not using ARC.
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(100,100,100,100)];
imageView.image = [[UIImage alloc] initWithData:myImage];
[myView addSubview:imageView];
or see that link http://www.iphonedevsdk.com/forum/iphone-sdk-development/23840-placing-image-url-image-view.html
Perhaps this will help you.
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
documentsDirectory = [documentsDirectory stringByAppendingPathComponent:#"Images"];
documentsDirectory = [documentsDirectory stringByAppendingPathComponent:#"Image.png"];
[cell.songImageView setImage:[UIImage imageWithContentsOfFile:documentsDirectory]];
I am making an application in which i have use Json parsing. With the help of json parsing i get photo url which is saved in string. To show images in my cell i use this code
NSString *strURL=[NSString stringWithFormat:#"%#", [list_photo objectAtIndex:indexPath.row]];
NSData *imageData = [[NSData alloc] initWithContentsOfURL: [NSURL URLWithString: strURL]];
CGRect myImage =CGRectMake(13,5,50,50);
UIImageView *imageView = [[UIImageView alloc] initWithFrame:myImage];
[imageView setImage:[UIImage imageWithData: imageData]];
[cell addSubview:imageView];
Now prblem is that when i go back or forword then i have wait for few second to come back on same view. Now i want that i when application is used first tme then i wait for that screen otherwise get images from home directory. How i save these image in my home directory? How access from home directory?
You can save an image in the default documents directory as follows using the imageData;
// Accessing the documents directory
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *savedImagePath = [documentsDirectory stringByAppendingPathComponent:#"myImage.png"];
//Writing the image file
[imageData writeToFile:savedImagePath atomically:NO];
You can use this to write a file to your Documents Folder
+(BOOL) downloadFileFromURL:(NSString *) url withLocalName:(NSString*) localName
{
//Get the local file and it's size.
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *finalPath = [documentsDirectory stringByAppendingPathComponent:localName];
NSError *error;
NSDictionary *fileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:finalPath error:&error];
NSAssert (error == nil, ([NSString stringWithFormat:#"Error: %#", error]));
if (error) return NO;
int localFileSize = [[fileAttributes objectForKey:NSFileSize] intValue];
//Prepare a request for the desired resource.
NSMutableURLRequest *request = [NSMutableURLRequest
requestWithURL:[NSURL URLWithString:url]];
[request setHTTPMethod:#"HEAD"];
//Send the request for just the HTTP header.
NSURLResponse *response;
[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSAssert (error == nil, ([NSString stringWithFormat:#"Error: %#", error]));
if (error) return NO;
//Check the response code
int status = 404;
if ([response respondsToSelector:#selector(statusCode)])
{
NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse*) response;
status = [httpResponse statusCode];
}
if (status != 200)
{
//file not found
return NO;
}
else
{
//file found
}
//Get the expected file size of the downloaded file
int remoteFileSize = [response expectedContentLength];
//If the file isn't already downloaded, download it.
if (localFileSize != remoteFileSize || (localFileSize == 0))
{
NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:url]];
[[NSFileManager defaultManager] createFileAtPath:finalPath contents:data attributes:nil];
return YES;
}
//here we may wish to check the dates or the file contents to ensure they are the same file.
//The file is already downloaded
return YES;
}
and this to read:
+(UIImage*) fileAtLocation:(NSString*) docLocation
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *finalPath = [documentsDirectory stringByAppendingPathComponent:docLocation];
NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:url]];
[[NSFileManager defaultManager] createFileAtPath:finalPath contents:data attributes:nil];
NSData *databuffer = [[NSFileManager defaultManager] contentsAtPath:finalPath];
UIImage *image = [UIImage imageWithData:databuffer];
return image;
}