I have a video document which is uploaded on server . The name of that document does not contain any extension.
I have to download that document (which is actually a video file) from the server and play it.
I need to know how do I get the extension of that file. I do not have it specified in my URL.
its just like /var/mobile/Applications/B18D9BE8-6E1D-43F0-8240-A909B9A27F7C/Documents/XXX/docdata/ABC/XYZ
XYZ is the document which I want to play. It is actally a video file which is saved on the server.
In Android we do something like parse URI. DO we have anything similar like this in iOS.
a general approach. Have a look at the meta-data of the file to determine which vidoe type it is. This should be provided at the file itself.
Perhaps this helps: https://stackoverflow.com/a/5815629/1933185
The following solution worked for me. Hope it help others as well.
NSString* fullPath = [yourpath stringByExpandingTildeInPath];
NSURL* fileUrl = [NSURL fileURLWithPath:fullPath];
NSURLRequest* fileUrlRequest = [[NSURLRequest alloc] initWithURL:fileUrl cachePolicy:NSURLCacheStorageNotAllowed timeoutInterval:.1];
NSError* error = nil;
NSURLResponse* response = nil;
NSData* fileData = [NSURLConnection sendSynchronousRequest:fileUrlRequest returningResponse:&response error:&error];
NSString* mimeType = [response MIMEType];
NSArray *components = [mimeType componentsSeparatedByString:#"/"];
NSString *query = [components lastObject]; //gives the extension
This query is the file extension. Your can put an if/else or switch to perform operation based on your extension.
if ([query isEqualToString:#"mp4"]) {
yourpath = [yourpath stringByAppendingPathExtension:#"mp4"];
}
// likewise for all extensions
NSData* video = [NSData dataWithContentsOfURL:fileUrl options:NSDataReadingUncached error:&error];
if (error) {
NSLog(#"%#", [error localizedDescription]);
[error release];
} else {
NSLog(#"Data has loaded successfully.");
}
BOOL success = [video writeToFile:yourpath atomically:NO];
[fileUrlRequest release];
if (success) {
//open your video the way you want
}
Related
I want to upload an NSString to a text file (.txt) on an ftp server.
I use the following code:
- (IBAction)Blau:(id)sender {
BlauS = #"1";
NSURL *BlauURL= [NSURL URLWithString:#"ftp://username:password#myftpserverurl/blau.txt"];
NSError *error;
BOOL proof=[BlauS writeToURL:BlauURL atomically:NO encoding:NSUTF8StringEncoding error:&Error];
if (!proof) {
NSLog(#"Error!: %#", [error localizedFailureReason]);
}
}
My log shows me the following error:
The specified URL type isn’t supported.
What's wrong? How can I fix this problem?
I'm practicing how to parse XML data and store it into the sqlite. I have done parsing and storing successfully. But I have one problem with displaying image from an url. The URL is formed by combining two NSStrings. One for the fixed address(which I set value) and other based on the name of the photo(retrieved from Sqlite). I am able to create complete URL by retrieving name of photo from Sqlite. But strange thing happen when I use that URL to display image in UIImageView. It does not work. After some testing, I found out there is something wrong with the portion(photo name) I retrieved from Sqlite. If I combine the fixed address with literal name of the photo, it works. Can somebody explain why it happens like this. Thanks in advance.
NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:#"user.db"];
FMDatabase * database = [FMDatabase databaseWithPath:defaultDBPath];
[database open];
results=[database executeQuery:#"SELECT * FROM plant WHERE name=?",self.plantname];
while([results next]) {
name = [results stringForColumn:#"name"];
category = [results stringForColumn:#"category"];
instructions = [results stringForColumn:#"instructions"];
price = [results stringForColumn:#"price"];
photo=[results stringForColumn:#"photo"];
}
NSString * fixedURL = #"http://services.hanselandpetal.com/photos/";
NSString *url=[fixedURL stringByAppendingString:photo];
NSLog(url);
NSURL * imgURL = [NSURL URLWithString:url];
NSData * imageData = [NSData dataWithContentsOfURL:imgURL];
UIImage * image = [UIImage imageWithData:imageData];
self.plantImageView.image=image;
Edit
I've edited based on Rob answer. But there are still problems. I put log below. I've already tried to remove white spaces by using [photo stringByReplacingOccurrencesOfString:#" " withString:#""]. But it does not seem to affect.
2014-10-15 02:12:39.505 SqlitePractice[9256:286525] url string = 'http:/services.hanselandpetal.com/photos/mona_lavender.jpg'
2014-10-15 02:12:39.506 SqlitePractice[9256:286525] imgURL = (null)
2014-10-15 02:12:39.516 SqlitePractice[9256:286525] sendAsynchronousRequest failed: Error Domain=NSURLErrorDomain Code=-1002 "unsupported URL" UserInfo=0x7a78ba50 {NSUnderlyingError=0x7a66b5e0 "unsupported URL", NSLocalizedDescription=unsupported URL}
Edit 2
The URL seems to be problem after changing from stringByAppendingString to stringByAppendingPathComponent. But I found out that even without one slash after http: , it works if I change the photo value. And the image is displayed.
NSString * fixedURL = #"http://services.hanselandpetal.com/photos/";
photo=#"bougainvillea.jpg";
NSString *url=[fixedURL stringByAppendingPathComponent:photo];
NSLog(#"url string = '%#'", url);
NSURL * imgURL = [NSURL URLWithString:url];
NSLog(#"imgURL = %#", imgURL);
And the log is below,
2014-10-15 12:07:56.650 SqlitePractice[9690:308022] url string = 'http:/services.hanselandpetal.com/photos/bougainvillea.jpg'
2014-10-15 12:07:56.651 SqlitePractice[9690:308022] imgURL = http:/services.hanselandpetal.com/photos/bougainvillea.jpg
Edit 3
I have changed based on Rob's modified answer.
NSURL *fixedURL = [NSURL URLWithString:#"http://services.hanselandpetal.com/photos/"];
NSURL *url = [fixedURL URLByAppendingPathComponent:[photo stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
NSLog(#"image URL = '%#'", url);
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
if (error) {
NSLog(#"sendAsynchronousRequest failed: %#", error);
return;
}
UIImage *image = [UIImage imageWithData:data];
self.plantImageView.image=image;
}];
And here is the log message:
2014-10-15 13:40:38.977 SqlitePractice[10436:357359] image URL = 'http://services.hanselandpetal.com/photos/camellia.jpg%250A%2520%2520%2520%2520'
A couple of thoughts:
Unrelated to your problem at hand, instead of stringByAppendingString, it's generally better to use URLByAppendingPathComponent with a NSURL. It takes care of adding any necessary / characters for you. Not critical given your example, but it's more robust.
Also, if the string might have spaces or other characters not permitted in a URL, you might percent escape it, too.
Thus, you'd do something like:
NSURL *fixedURL = [NSURL URLWithString:#"http://services.hanselandpetal.com/photos/"];
NSURL *url = [fixedURL URLByAppendingPathComponent:[photo stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
You should NSLog the NSURL variable and make sure it's not nil (e.g. which could be caused if there were some spaces in the photo string, for example, unless you percent escape it).
In your revised question, in which you share the log, the original URL string (before the conversion to the NSURL) is being reported as:
http:/services.hanselandpetal.com/photos/mona_lavender.jpg
That should be:
http://services.hanselandpetal.com/photos/mona_lavender.jpg
If imgURL is not nil, but imageData is, you might want to retrieve the image data in a manner that retrieves the error. For example, you could:
NSError *error = nil;
NSData *imageData = [NSData dataWithContentsOfURL:imgURL options:0 error:&error];
if (!imageData) {
NSLog(#"dataWithContentsOfURL failed: %#", error);
}
Bottom line, go through this one line at a time and identify precisely where it is going wrong.
As an aside, you generally would want to avoid using dataWithContentsOfURL, but instead use an asynchronous method:
NSURL *fixedURL = [NSURL URLWithString:#"http://services.hanselandpetal.com/photos/"];
NSURL *url = [fixedURL URLByAppendingPathComponent:[photo stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
NRURLRequest *request = [NSURLRequest requestWithURL:imgURL];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
if (error) {
NSLog(#"sendAsynchronousRequest failed: %#", error);
return;
}
UIImage *image = [UIImage imageWithData:data];
self.plantImageView.image=image;
}];
I belive that UIIMAGEVIEW will not display Url as image path. I would sugest to try with UIWebView which would display web content (image or whole web page). This example is writen in objective-c.
self.myWebView = [[UIWebView alloc] initWithFrame:self.view.bounds];
self.myWebView.scalesPageToFit = YES ;
[self.view addSubview:self.myWebView];
NSURL *url = [NSURL URLWithString:#"http://services.hanselandpetal.com/photos/mona_lavender.jpg"];
NSURLRequest *request = [ NSURLRequest requestWithURL:url];
[self.myWebView loadRequest:request]
In my application , i want to set default system message tones for upcoming message settings. How can i open default device alertTones list.
I have tried following code, but its not returning any sound.
NSFileManager *fileManager = [[NSFileManager alloc] init];
NSURL *directoryURL = [NSURL URLWithString:#"/System/Library/Audio/UISounds"];
NSArray *keys = [NSArray arrayWithObject:NSURLIsDirectoryKey];
NSDirectoryEnumerator *enumerator = [fileManager
enumeratorAtURL:directoryURL
includingPropertiesForKeys:keys
options:0
errorHandler:^(NSURL *url, NSError *error) {
// Handle the error.
// Return YES if the enumeration should continue after the error.
return YES;
}];
for (NSURL *url in enumerator) {
NSError *error;
NSNumber *isDirectory = nil;
if (! [url getResourceValue:&isDirectory forKey:NSURLIsDirectoryKey error:&error]) {
// handle error
}
else if (! [isDirectory boolValue]) {
[audioFileList addObject:url];
}
}
Please Help.
Checked this link https://github.com/TUNER88/iOSSystemSoundsLibrary. I think are you using this reference code and its working I have tested in the iPhone. I think you were testing in the iPhone Simulator. its not working in the simulator. So, Test in the Device its working fine
The README page in Github (https://github.com/aws/aws-sdk-ios-v2) already has an example to upload an image, from the file path URL:
AWSS3TransferManagerUploadRequest *uploadRequest = [AWSS3TransferManagerUploadRequest new];
uploadRequest.bucket = yourBucket;
uploadRequest.key = yourKey;
uploadRequest.body = yourDataURL; // <<<< this is a NSURL
uploadRequest.contentLength = [NSNumber numberWithUnsignedLongLong:fileSize];
But, what if I only have a UIImage in memory (without file path)?
Is it possible to upload a UIImage (or it's NSData) to S3 using the SDK?
Would it be easier to manually use the HTTP API (using something like AFNetworking)?
Even though AWSiOSSDKv2 doesn't support uploading images from memory, you can save it as a file and then upload it.
//image you want to upload
UIImage* imageToUpload = [UIImage imageNamed:#"imagetoupload"];
//convert uiimage to
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *filePath = [[paths objectAtIndex:0] stringByAppendingPathComponent:[NSString stringWithFormat:#"%#.png", dateKey]];
[UIImagePNGRepresentation(imageToUpload) writeToFile:filePath atomically:YES];
NSURL* fileUrl = [NSURL fileURLWithPath:filePath];
//upload the image
AWSS3TransferManagerUploadRequest *uploadRequest = [AWSS3TransferManagerUploadRequest new];
uploadRequest.body = fileUrl;
uploadRequest.bucket = AWS_BUCKET_NAME;
uploadRequest.key = #"yourkey";
uploadRequest.contentType = #"image/png";
[[transferManager upload:thumbNailUploadRequest] continueWithExecutor:[BFExecutor mainThreadExecutor] withBlock:^id(BFTask *task) {
if(task.error == nil) {
NSLog(#"woot");
}
return nil;
}];
It seems that AWSiOSSDKv2 don't have support to upload images from memory at this moment :(
From a Github issue:
The decision to accept only file NSURLs was driven by the following
factors:
Since v1, the pause / resume features require the input to be
files. It's not possible to recover NSData and retry the transfer when
the app is killed.
The background transfer on iOS 7 and above only
supports files. Currently, we don't support background transfer, but
we are planning to support it in the future. We considered accepting
an NSData and internally persisting the data to a temporary directory.
We decided not to include this in 2.0 release because if the NSData is
backed by a file, it doubles the disk usage for the data. Also,
developers have to deal with disk related errors when using
S3TransferManager. Even though we decided not to accept NSData in 2.0
release, we are open for your feedback. If this is a feature you want
to see in the future release, please create a new issue with the
feature request.
```
You can apparently do it with "presigned URLs"
- (void)uploadImageToS3: (UIImage *)image {
NSData *imageData = UIImageJPEGRepresentation(image, 0.7);
AWSS3GetPreSignedURLRequest *getPreSignedURLRequest = [AWSS3GetPreSignedURLRequest new];
getPreSignedURLRequest.bucket = #"bucket-name";
getPreSignedURLRequest.key = #"image-name.jpg";
getPreSignedURLRequest.HTTPMethod = AWSHTTPMethodPUT;
getPreSignedURLRequest.expires = [NSDate dateWithTimeIntervalSinceNow:3600];
NSString *fileContentTypeString = #"text/plain";
getPreSignedURLRequest.contentType = fileContentTypeString;
[[[AWSS3PreSignedURLBuilder defaultS3PreSignedURLBuilder] getPreSignedURL:getPreSignedURLRequest] continueWithBlock:^id(AWSTask *task) {
if (task.error) {
NSLog(#"Error: %#", task.error);
} else {
NSURL *presignedURL = task.result;
NSLog(#"upload presignedURL is \n%#", presignedURL);
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:presignedURL];
request.cachePolicy = NSURLRequestReloadIgnoringLocalCacheData;
[request setHTTPMethod:#"PUT"];
[request setValue:fileContentTypeString forHTTPHeaderField:#"Content-Type"];
NSURLSessionUploadTask *uploadTask = [[NSURLSession sharedSession] uploadTaskWithRequest:request fromData:imageData completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
if (error) {
NSLog(#"Upload errer: %#", error);
}
NSLog(#"Done");
}];
[uploadTask resume];
}
return nil;
}];
}
Documented in the S3 docs for v2 SDK at http://docs.aws.amazon.com/mobile/sdkforios/developerguide/s3transfermanager.html#use-pre-signed-urls-to-transfer-objects-in-the-background
Its a bit of a mess with nested completion blocks, but the gist is you request a url, then when that returns you start an upload task. This was for a prototype test, not polished code. You should check the status code on the upload instead of just the error.
This is an updated answer so people don't have to figure it out themselves (like me) :D
Import the proper files (download it here)
#import <AWSCore/AWSCore.h>
#import <AWSS3TransferManager.h>
.m
- (void)viewDidLoad {
[super viewDidLoad];
AWSCognitoCredentialsProvider *credentialsProvider = [[AWSCognitoCredentialsProvider alloc] initWithRegionType:AWSRegionUSEast1
identityPoolId:#"us-east-1:*******-******-*****-*****-*****"];
AWSServiceConfiguration *configuration = [[AWSServiceConfiguration alloc] initWithRegion:AWSRegionUSEast1
credentialsProvider:credentialsProvider];
AWSServiceManager.defaultServiceManager.defaultServiceConfiguration = configuration;
}
I used a button to know when the user wants to upload the file
- (void)upload{
//convert uiimage to
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *filePath = [[paths objectAtIndex:0] stringByAppendingPathComponent:[NSString stringWithFormat:#".png"]];
[UIImagePNGRepresentation(YOUR_UIIMAGE) writeToFile:filePath atomically:YES];
NSURL* fileUrl = [NSURL fileURLWithPath:filePath];
//upload the image
AWSS3TransferManagerUploadRequest *uploadRequest = [AWSS3TransferManagerUploadRequest new];
uploadRequest.body = fileUrl;
uploadRequest.bucket = #"YOUR_BUCKET_NAME";
uploadRequest.key = #"YOUR_FOLDER_NAME (if you have one)/NEW_IMAGE_NAME.png";
uploadRequest.contentType = #"image/png";
uploadRequest.ACL = AWSS3BucketCannedACLPublicRead;
AWSS3TransferManager *transferManager = [AWSS3TransferManager defaultS3TransferManager];
[[transferManager upload:uploadRequest] continueWithExecutor:[AWSExecutor mainThreadExecutor]
withBlock:^id(AWSTask *task) {
if (task.error != nil) {
NSLog(#"%s %#","Error uploading :", uploadRequest.key);
}else { NSLog(#"Upload completed"); }
return nil;
}];
}
Helpfull links:
AWS Documnetion
YouTube Video
Hopefully this helps someone out!
In the current version of the SDK you can use AWSS3TransferUtility and then it does everything for you.
func uploadData() {
let data: Data = Data() // Data to be uploaded
let expression = AWSS3TransferUtilityUploadExpression()
expression.progressBlock = {(task, progress) in
DispatchQueue.main.async(execute: {
// Do something e.g. Update a progress bar.
})
}
var completionHandler: AWSS3TransferUtilityUploadCompletionHandlerBlock?
completionHandler = { (task, error) -> Void in
DispatchQueue.main.async(execute: {
// Do something e.g. Alert a user for transfer completion.
// On failed uploads, `error` contains the error object.
})
}
let transferUtility = AWSS3TransferUtility.default()
transferUtility.uploadData(data,
bucket: "YourBucket",
key: "YourFileName",
contentType: "text/plain",
expression: expression,
completionHandler: completionHandler).continueWith {
(task) -> AnyObject! in
if let error = task.error {
print("Error: \(error.localizedDescription)")
}
if let _ = task.result {
// Do something with uploadTask.
}
return nil;
}
}
Hi you can sand image without saving image to the temporary folder in the iPhone Amazon iOS v2 gives such option as well.
In this code logFile.body it is NSData.
This code will help you my friend.
AWSS3PutObjectRequest *logFile = [AWSS3PutObjectRequest new];
logFile.bucket = uploadTokenData_.bucket;
logFile.key = key;
logFile.contentType = contentType;
logFile.body = data_;
logFile.contentLength = [NSNumber numberWithInteger:[data_ length]];
AWSS3 *S3 = [[AWSS3 alloc] initWithConfiguration:[AWSCredentialsProvider runServiceWithStsCredential]];
AWSS3TransferManager *transferManager = [[AWSS3TransferManager alloc] initWithS3:S3];
[[transferManager.s3 putObject:logFile] continueWithBlock:^id(BFTask *task)
{
NSLog(#"Error : %#", task.error);
if (task.error == nil)
{
NSLog(#"Uploadet");
}
}
With AWSS3TransferUtility you can upload any data type, also AWSS3TransferManagerUploadRequest is deprecated now, here is the code sample to upload jpeg but can be converted for any data type:
Code sample
I am building my App conected to a Rest API and until now I only made a GET request with the following code :
//Start login process
NSString *emailstring = email.text;
NSString *passstring = pass.text;
// Create the URL from a string.
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:#"http://www.myserver.com/Rest/API/users?format=json&email=%#&password=%#",emailstring,passstring]];
NSLog(#"%#",url);
// Create a request object using the URL.
NSURLRequest *request = [NSURLRequest requestWithURL:url];
// Prepare for the response back from the server
NSHTTPURLResponse *response = nil;
NSError *error = nil;
// Send a synchronous request to the server (i.e. sit and wait for the response)
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSLog(#"Reponse from web:%#", response);
// Check if an error occurred
if (error != nil) {
NSLog(#"%#", [error localizedDescription]);
// Do something to handle/advise user.
UIAlertView *message = [[UIAlertView alloc] initWithTitle:#"Login error"
message:#""
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[message show];
}
else {
// Convert the response data to a string.
NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
// View the data returned - should be ready for parsing.
NSLog(#"%#", responseString);
// Add data to a Plist file for next time
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"login.plist"];
NSArray *values = [[NSArray alloc] initWithObjects:emailstring,passstring,#"IDtest",nil];
[values writeToFile:path atomically:YES];
[values release];
[self dismissModalViewControllerAnimated:YES];
}
This code work fine just for a GET request. I saw it is there a lot of framework (e.g RestKit, ....). But I am getting a bit lost with other request ! So what is the best solution to make POST DELETE PUT request for an IOS App ?
It's similar code, but using the class NSMutableRequest. You can set the httpbody and other parameters to communicate with the server.
check the documentation: https://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Classes/NSMutableURLRequest_Class/Reference/Reference.html
to post something, just put setHTTPMethod:#"POST"and assign the data to post using setHTTPBody: