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Send image to server as binary data
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Closed 9 years ago.
I want to upload image from UIImagePickerController.
I want to post my image to server from my iPad library.
I am not able to send the image to server. Any other options to do this?
I am doing this:
-(void)method_OpenImagePickerLibrary{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentViewController:picker animated:YES completion:NULL];
}
-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
[self dismissViewControllerAnimated:YES completion:nil];
}
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *image=[info objectForKey:UIImagePickerControllerEditedImage];
SelectPickerimageView.image=image;
NSData *imageData = UIImagePNGRepresentation(image);
NSString *documentsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
// Here is the file path for the image
filepath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:#"imagename.png"]];
[imageData writeToFile:filepath options:NSDataWritingAtomic error:nil];
[self dismissModalViewControllerAnimated:YES];
}
-(void)MethodUploadImage{
NSString *ftpUrl=#"ftp://yourftp Url";
NSString *strPortNumber=#"port Number";
NSString *strurlUpload=[NSString stringWithFormat:#"%#:%#",ftpUrl,strPortNumber];
NSString *getfilePath = filepath;
SCRFTPRequest *ftpRequest = [[SCRFTPRequest alloc] initWithURL:[NSURL URLWithString:strurlUpload] toUploadFile:getfilePath];
ftpRequest.username = #"Username";
ftpRequest.password = #"password";
ftpRequest.delegate = self;
/*
ftpRequest.didFinishSelector = #selector(uploadFinished:);
ftpRequest.didFailSelector = #selector(uploadFailed:);
ftpRequest.willStartSelector = #selector(uploadWillStart:);
ftpRequest.didChangeStatusSelector = #selector(requestStatusChanged:);
ftpRequest.bytesWrittenSelector = #selector(uploadBytesWritten:);*/
[ftpRequest startRequest];
}
These commented lines are giving me errors
Error 1: Undeclared selector
Error 2: Property
didFinishSelector,didFailSelector,willStartSelector,didChangeStatusSelector,bytesWrittenSelector
not found on SCRFtprequest delegate
Any idea or suggestion would be highly welcome.
Try using AFNetworking. It will surely make your life much easier.
Related
I use UIImagePickerController to edit video and cut it,
I create it like this:
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate = self;
[imagePicker setVideoQuality:UIImagePickerControllerQualityType640x480];
imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
imagePicker.mediaTypes = #[(__bridge NSString *)kUTTypeMovie, (__bridge NSString *)kUTTypeVideo, (__bridge NSString *)kUTTypeMPEG4];
imagePicker.allowsEditing = YES;
[self.navigationController presentViewController:imagePicker animated:YES completion:nil];
but unfortunately in delegate method that is called I cant get start and end editing time - to save edited video:
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info {
[picker dismissViewControllerAnimated:YES completion:^{
}];
NSString *type = [info objectForKey:UIImagePickerControllerMediaType];
if ([type isEqualToString:(NSString *)kUTTypeVideo] ||
[type isEqualToString:(NSString *)kUTTypeMovie]) { // movie != video
NSURL *videoURL = [info objectForKey:UIImagePickerControllerMediaURL];
NSNumber *start = [info objectForKey:#"_UIImagePickerControllerVideoEditingStart"];
NSNumber *end = [info objectForKey:#"_UIImagePickerControllerVideoEditingEnd"];
}
in my case start and end is nil. I have no idea how to get this information. Could you please advice how to get it?
Thank you in advance for any help.
I just check your code and run and i found that _UIImagePickerControllerVideoEditingStart and _UIImagePickerControllerVideoEditingEnd return only captured video from camera but if you are select video from your PhotoLibrary you did not get this two key in info dictionary:
If you are using imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; then you will get following info dictionary log:
UIImagePickerControllerMediaType = "public.movie";
UIImagePickerControllerMediaURL = "file:///private/var/mobile/Containers/Data/Application/BCBE6A30-1A92-41BB-8734-BFF052E416DE/tmp/trim.59737F15-FC2A-4EB7-89AE-DF3831089657.MOV";
UIImagePickerControllerReferenceURL = "assets-library://asset/asset.MOV?id=87E3E50A-1DBF-449F-8BE3-AB36E718D82C&ext=MOV";
If you are using imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera; then you will get following info dictionary log:
UIImagePickerControllerMediaType = "public.movie";
UIImagePickerControllerMediaURL = "file:///private/var/mobile/Containers/Data/Application/611D33A4-61F4-4CD0-934D-C0EFF82B75AC/tmp/capture/capturedvideo.MOV";
"_UIImagePickerControllerVideoEditingEnd" = "2.360877976190476";
"_UIImagePickerControllerVideoEditingStart" = "1.360505952380952";
So at the end with UIImagePickerControllerSourceTypePhotoLibrary UIImagePickerController wont provide a _UIImagePickerControllerVideoEditingStart and _UIImagePickerControllerVideoEditingEnd key. so you can get its duration by using AVURLAsset like following code that assume start Time is 0 and end time is full duration.
AVURLAsset *Asset = [AVURLAsset assetWithURL:videoURL];
CMTime duration = [Asset duration];
int fullduration = ceil(duration.value/duration.timescale);
I'm not sure where I'm doing the mistake, that's why I'd like to paste here some block of codes in order to find out what went wrong.
I have some PNG images that have transparent background and with using the block of codes below I'm trying save the selected image to application folder and NSUserDefault. And then I'm trying to call that saved image from application folder and display on UIBarButtonItem.
The purpose of saving to NSUserDefault as well is for testing.
So,
This is how I'm selecting the image.
- (IBAction)btnPressed:(UIButton *)sender
{
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeSavedPhotosAlbum])
{
UIImagePickerController *imgPicker = [[UIImagePickerController alloc] init];
imgPicker.delegate = self;
imgPicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
imgPicker.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeImage];
imgPicker.allowsEditing = NO;
[self presentViewController:imgPicker animated:YES completion:nil];
}
}
And with this I'm saving it to application using didFinishPickingMediaWithInfo;
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
[self dismissViewControllerAnimated:YES completion:nil];
if ([mediaType isEqualToString:(NSString *) kUTTypeImage])
{
UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
//I believe this has the problem.
NSData *pngData = UIImagePNGRepresentation(image);
NSString *stringPath = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:0]stringByAppendingPathComponent:#"AppImages"];;
NSError *error = nil;
if (![[NSFileManager defaultManager] fileExistsAtPath:stringPath])
[[NSFileManager defaultManager] createDirectoryAtPath:stringPath withIntermediateDirectories:NO attributes:nil error:&error];
NSString *fileName = [stringPath stringByAppendingPathComponent:#"logoImage.png"];
[pngData writeToFile:fileName atomically:YES];
NSUserDefaults *logoUserDef = [NSUserDefaults standardUserDefaults];
[logoUserDef setValue:pngData forKey:#"logoImageData"];
}
}
Note: I don't have problem for the images that doesn't have transparent background.
And lastly this is how I'm calling it from both Application and NSUserDefault.
Using both NSUserDefaults and AppDirectory to see if they're showing different result.
if ([[NSUserDefaults standardUserDefaults] objectForKey:#"logoImageData"])
{
NSUserDefaults *user = [NSUserDefaults standardUserDefaults];
UIImage *testing = [UIImage imageWithData:[user valueForKey:#"logoImageData"]];
NSString * documentsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
UIImage * image = [self loadImageWithFileName:#"logoImage" ofType:#"png" inDirectory:documentsDirectory];
UIBarButtonItem *logoBarButton = [[UIBarButtonItem alloc] initWithImage:image style:UIBarButtonItemStylePlain target:self action:#selector(logoTapped)];
logoBarButton.imageInsets = UIEdgeInsetsMake(9, 0, 9, 90);
logoBarButton.image = [logoBarButton.image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
[self.navigationItem setLeftBarButtonItems:#[logoBarButton]];
}
And method that returns UIImage from App Document.
-(UIImage *)loadImageWithFileName:(NSString *)fileName ofType:(NSString *)extension inDirectory:(NSString *)directoryPath {
UIImage * result = [UIImage imageWithContentsOfFile:[NSString stringWithFormat:#"%#/%#/%#.%#", directoryPath, #"AppImages", fileName, [extension lowercaseString]]];
return result;
}
I don't know from where I'm doing wrong but as always, when I select image that has transparent background. It always convert its background to White. I need to save it as it is as transparent. I've searched a lot but couldn't find anything to solve this.
Any help is appreciated.
Solved the problem!
The block of codes that I posted with my question have nothing wrong. The problem was occurring from iTunes, when I synchronize images from my Mac to my iPhone iTunes convert them to JPEG and because of this images loses their transparency etc... and when I select images using my app, I was selecting them as JPEG without being aware and that's why I had these problems.
So I came up with a solution to have images via email. I just send them from my mac to iPhone with e-mail, and by this images didn't lose anything as a feature. After that when I used them in app as a right image, the program worked as it supposed to be.
You wrote
[logoUserDef setValue:pngData forKey:#"logoImageData"];
but I don't see where you synchronize. So add:
[logoUserDef synchronize];
I was able to preserve the transparency when saving an image to the Documents directory after using
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
[self dismissViewControllerAnimated:YES completion:nil];
UIImage *img = [info valueForKey:UIImagePickerControllerOriginalImage];
[yourButton setImage:img forState:UIControlStateNormal];
NSData *pngData = UIImagePNGRepresentation(img);
//do something with pngData
}
The key is the UIImagePickerControllerOriginalImage instead of other options like UIImagePickerControllerEditedImage.
I am working on an application that needs its user to upload a photo for him, using iphone, how can i implement this : when click on the image in my personal information page, the gallery is opend to choose a photo. when the photo is chosen it must appear instead of the previous one (at first it is the default pic). Notice that, the path of this photo or the photo itself(i do not know) must be stored in the DataBase for the next login. Moreover, this photo must be transferred to the server in order to be shown on the website when the same user login on the web.
I did it using the following code, i can choose a photo but when i save the path i could not load the pic again. it is a white box !! there is no photo !!
-(void) pickPhoto
{
UIImagePickerController *picker ;
picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary])
{
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
}
else
{
picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
}
[self presentViewController:picker animated:YES completion:nil];
}
-(void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *img = [info objectForKey:UIImagePickerControllerEditedImage];
if(!img)
img = [info objectForKey:UIImagePickerControllerOriginalImage];
NSString *docDirPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *filePath = [docDirPath stringByAppendingPathComponent:#"myImage.png"];
NSLog (#"File Path = %#", filePath);
UIButton *btn = (UIButton *)[self.tableView viewWithTag:2013];
[btn setBackgroundImage:img forState:UIControlStateNormal];
database= [[connectToDB alloc] init];
[database setDelegate:self];
[database saveUserPic:filePath ForUser:user.userId];
[self dismissViewControllerAnimated:YES completion:nil];
}
now to load the pic :
UIImage *img;
if(pic != nil)
img=[UIImage imageWithContentsOfFile:pic];
else
img= [UIImage imageNamed:#"business_userL.png"];
Any Help will be appreciated.!
UIImagePickerControllerReferenceURL will return reference to local storage of your selected image.
NSURL* localUrl = (NSURL *)[info valueForKey:UIImagePickerControllerReferenceURL];
Now you can save this url in your database.
To retrieve the image : display image from URL retrieved from ALAsset in iPhone
I am trying to make my application open the camera app to take a save pictures.
from my application i am launching the camera application to take a picture with the following code:
-(IBAction)TakePhoto:(id)sender {
picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
[picker setSourceType:UIImagePickerControllerSourceTypeCamera];
[self presentViewController:picker animated:YES completion:NULL];
[picker release];
//save image??:
//UIImageWriteToSavedPhotosAlbum(UIImage *image, id completionTarget, SEL completionSelector, void *contextInfo);
}
-(void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
image = [info objectForKey:UIImagePickerControllerOriginalImage];
[self dismissViewControllerAnimated:YES completion:NULL];
}
-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
[self dismissViewControllerAnimated:YES completion:NULL];
}
My problem is that once the button is pressed, the camera comes out and allows me to take a picture. Once the picture is take, the image is shown and i have the option to "retake" or "use". My issue is that if i click "use" the image is not saved to the camera roll. Is there a possibility to save the image and eventually change the "use" button to say "save"?
Thank you for you help!
The photo isn't being saved because you never actually added the code to save the image to the didFinishPickingMediaWithInfo: delegate method. All you have to do is add the line that you commented out in TakePhoto: to this function and you will be able to save the photo to the camera roll. E.x:
-(void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
image = [info objectForKey:UIImagePickerControllerOriginalImage];
UIImageWriteToSavedPhotosAlbum(image, nil, nil, NULL);
[self dismissViewControllerAnimated:YES completion:NULL];
}
static NSDateFormatter* dateFormatter;
- (NSString*) generateNameWithExtension: (NSString*) extension
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.dateFormat = #"yyyyMMddHHmmssSSS";
});
NSDate* now = [NSDate date];
NSString* string = [dateFormatter stringFromDate:now];
string = [NSString stringWithFormat:#"%#.%#",string,extension];
return string;
}
- (NSString*) saveImage: (UIImage*) image WithExtension: (NSString*) extension
{
extension = [extension lowercaseString];
NSData* data;
if ([extension isEqualToString:#"png"])
{
data = UIImagePNGRepresentation(image);
}else if ([extension isEqualToString:#"jpg"]||[extension isEqualToString:#"jpeg"])
{
data = UIImageJPEGRepresentation(image, 1.0);
}else{
NSLog(#"Error save local image, Extension: (%#) is not recognized, use (PNG/JPG)",extension);
return nil;
}
NSString* imageName = [self generateNameWithExtension:extension];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documents = [paths objectAtIndex:0];
NSString *finalPath = [documents stringByAppendingPathComponent:imageName];
[data writeToFile:finalPath options:NSAtomicWrite error:nil];
return finalPath;
}
This code save image in folder you app. You can later use it: [UIImage imageWithContentsOfFile:finalPath]
In my app, If user selects an image from camera roll to use as a compnay logo (added to a final pdf) it can take the attached file size from 8mb (with no image) to 29mb in some cases. This is a problem when user emails the file as its lager than most servers will allow for attachement sizes
- (IBAction)schemeLogoPressed:(id)sender {
LogCmd();
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
imagePicker.delegate = self;
imagePicker.allowsEditing = NO;
[self.editController presentModalViewController:imagePicker animated:YES];
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
DebugLog(#"info dict: %#", info);
[picker dismissModalViewControllerAnimated:YES];
UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
self.schemeLogo.backgroundColor = [UIColor whiteColor];
self.schemeLogo.image = image;
NSData *imageData1 = UIImagePNGRepresentation(image);
NSString *path1 = [ICUtils pathForDocument:#"schemeLogo.png"];
[imageData1 writeToFile:path1 atomically:NO];
Is there anything I can do to optimise the picked image size?
Change this line:
NSData *imageData1 = UIImagePNGRepresentation(image);
to:
NSData *imageData1 = UIImageJPEGRepresentation(image, 0.9f);
the second parameter (0.9 float) is the quality. Higher number, higher quality. from 0.0 to 1.0