With the following code
NSURL *url = [NSURL fileURLWithPath: localFilePath];
NSURLSessionTask *task = [[NSURLSession sharedSession] dataTaskWithURL: url completionHandler:
^(NSData *data, NSURLResponse *response, NSError *error)
{
self.avAudioPlayer = [[AVAudioPlayer alloc] initWithData:data error: nil];
self.avAudioPlayer.volume = 0.5;
self.avAudioPlayer.delegate = self;
[self.avAudioPlayer play];
}];
[task resume];
Task never starts on iOS 6.x, but works fine with iOS 7.x, 8.x
Will be looking for another way of doing this, but curious by it is not work on iOS 6.
Simply because, as the official reference on NSURLSessionTask states, it's been introduced in iOS 7.0.
Related
Trying to write a method for my iPhone program that given a URL address to a file, it would download to the iOS App's Documents Directory.
Following AFNetowrking's Documentation, it seems to work fine except that the filename is always some garbage.
I'm using Xcode 5 with AFNetworking 2.0 added to my project. Here's the code that I have so far:
//#import "AFURLSessionManager.h"
//On load (or wherever):
[self downloadFile:#"http://www.irs.gov/pub/irs-pdf/fw4.pdf"];
-(void)downloadFile:(NSString *)UrlAddress
{ NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];
NSURL *URL = [NSURL URLWithString:UrlAddress];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];
NSURLSessionDownloadTask *downloadTask = [manager downloadTaskWithRequest:request progress:nil destination:^NSURL *(NSURL *targetPath, NSURLResponse *response)
{
NSURL *documentsDirectoryPath = [NSURL fileURLWithPath:[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]];
return [documentsDirectoryPath URLByAppendingPathComponent:[targetPath lastPathComponent]];
}
completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error)
{
NSLog(#"File downloaded to: %#", filePath);
}];
[downloadTask resume];
}
The end result is that the file is successfully downloaded to my documents directory, but with a garbled name:
File downloaded to: file:///Users/myname/Library/Application%20Support/iPhone%20Simulator/7.0/Applications/25188DCA-4277-488E-B08A-4BEC83E59194/Documents/CFNetworkDownload_60NWIf.tmp
The end result I'm expecting:
File downloaded to: file:///Users/myname/Library/Application%20Support/iPhone%20Simulator/7.0/Applications/25188DCA-4277-488E-B08A-4BEC83E59194/Documents/fw4.pdf
I used cocoapods to add AFNetworking to my project:
pod 'AFNetworking', "~> 2.0"
Lastly, what do I need to do to get the progress of the download?
This is the answer I was able to create:
-(void)downloadFile:(NSString *)UrlAddress
{
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:UrlAddress]];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
NSString *pdfName = #"The_PDF_Name_I_Want.pdf";
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *path = [[paths objectAtIndex:0] stringByAppendingPathComponent:pdfName];
operation.outputStream = [NSOutputStream outputStreamToFileAtPath:path append:NO];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"Successfully downloaded file to %#", path);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];
[operation setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead) {
NSLog(#"Download = %f", (float)totalBytesRead / totalBytesExpectedToRead);
}];
[operation start];
}
I am open to improvements or suggestions :)
Simply you can replace this line:
return [documentsDirectoryPath URLByAppendingPathComponent:[targetPath lastPathComponent]];
with:
return [documentsDirectoryPath URLByAppendingPathComponent:#"fw4.pdf"];
since [targetPath lastPathComponent] returns something like CFNetworkDownload_60NWIf.tmp
How to use TWRequest for both iOS 5 for getting Twitter User Details,
TWRequest was working earlier and I was using in this way
NSURL *url = [NSURL URLWithString:#"https://api.twitter.com/1/users/show.json"];
NSDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys:twittername,#"screen_name",nil];
request = [[TWRequest alloc] initWithURL:url
parameters:params
requestMethod:TWRequestMethodGET];
But recently, Twitter closed the api version 1 and implemented version 1.1, and Presently The above logic is not working in iOS 5, due to the API deprecation may be...
I am using SLRequest for iOS 6 it is working perfect, But I would like to know How can we get Twitter user details in iOS 5
Try this :
NSURL *url = [NSURL URLWithString:#"https://api.twitter.com/1.1/users/show.json"];
NSDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys:twittername,#"screen_name",nil];
request = [[TWRequest alloc] initWithURL:url parameters:params requestMethod:TWRequestMethodGET];
ACAccountStore *accountStore = [[ACAccountStore alloc] init];
ACAccountType *twitterAccountType = [accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierTwitter];
NSArray *twitterAccounts = [accountStore accountsWithAccountType:twitterAccountType];
// Runing on iOS 6
if (NSClassFromString(#"SLComposeViewController") && [SLComposeViewController isAvailableForServiceType:SLServiceTypeTwitter])
{
[accountStore requestAccessToAccountsWithType:twitterAccountType options:NULL completion:^(BOOL granted, NSError *error)
{
if (granted)
{
SLRequest *request = [SLRequest requestForServiceType:SLServiceTypeTwitter requestMethod:SLRequestMethodGET URL:url parameters:parameters];
[request setAccount:[twitterAccounts lastObject]];
dispatch_async(dispatch_get_main_queue(), ^
{
[NSURLConnection sendAsynchronousRequest:request.preparedURLRequest queue:[[NSOperationQueue alloc] init] completionHandler:^(NSURLResponse *response1, NSData *data, NSError *error)
{
dispatch_async(dispatch_get_main_queue(), ^
{
if (data)
{
[self loadData:data];
}
});
}];
});
}
}];
}
else if (NSClassFromString(#"TWTweetComposeViewController") && [TWTweetComposeViewController canSendTweet]) // Runing on iOS 5
{
[accountStore requestAccessToAccountsWithType:twitterAccountType withCompletionHandler:^(BOOL granted, NSError *error)
{
if (granted)
{
TWRequest *request = [[TWRequest alloc] initWithURL:url parameters:parameters requestMethod:TWRequestMethodGET];
[request setAccount:[twitterAccounts lastObject]];
dispatch_async(dispatch_get_main_queue(), ^
{
[NSURLConnection sendAsynchronousRequest:request.signedURLRequest queue:[[NSOperationQueue alloc] init] completionHandler:^(NSURLResponse *response1, NSData *data, NSError *error)
{
dispatch_async(dispatch_get_main_queue(), ^
{
if (data)
{
[self loadData:data];
}
});
}];
});
}
}];
}
}
I am currently using this code to get data from a URL:
NSURL *url = [[NSURL alloc] initWithString:urlstring];
NSString *stringfromFB = [[NSString alloc] initWithContentsOfURL:url];
I was wondering how I could gather this data asynchronously so that my app does not freeze everytime I need to execute this. Thanks!
The simplest way is available in os5 like this:
NSString *stringfromFB;
NSURL *url = [[NSURL alloc] initWithString:urlstring];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
if (data) {
stringfromFB = [[NSString alloc] initWithData:data
encoding:NSUTF8StringEncoding]; // note the retain count here.
} else {
// handle error
}
}];
If you're stuck in os<5 for some reason, you'll need to start your connection with a delegate, and implement the delegate protocol as illustrated here (and many places elsewhere).
You can do it with GCD:
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^{
NSURL *url = [[NSURL alloc] initWithString:urlstring];
NSString *stringfromFB = [[NSString alloc] initWithContentsOfURL:url]
});
// Do not alloc init URL obj. for local use.
NSString *urlString = #"put your url string here";
NSURL *url = [NSURL URLWithString:urlString];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[[[NSURLConnection alloc] initWithRequest:request delegate:self] autorelease];
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
The above delegate methods are of NSURLConnectionDelegate, where you need to handle all things like response error etc.. It is by default provided so we can directly override it without
I have use once in my project It will work for async request but If you received number of images as well then also use IconDownloader or EGOImageView which implements the lazy loading of image and make much low chances of freezing of app.
if you don’t want to wait for a connection to complete loading a url, you can load it asynchronously using NSURLConnection.
[NSURLConnection connectionWithRequest:
[NSURLRequest requestWithURL:
[NSURL URLWithString:yourUrlString]]
delegate:self];
Now that NSURLConnection is deprecated you need to use NSURLSession.
NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionDataTask *task = [session dataTaskWithRequest: request
completionHandler: ^(NSData *data, NSURLResponse *response, NSError *networkError) {
NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response;
if ([httpResponse statusCode] == STATUS_OK) {
// use data
}
else {
NSLog(#"Network Session Error: %#", [networkError localizedFailureReason]);
}
}];
[task resume];
So I'm trying to test out the audio player on the iPhone, and I went off Troy Brant's iOS book. I have the Core Audio, Core Foundation, AudioToolbox, and AVFoundation frameworks added to my project. The error message I get is in the subject field. I read like 20 pages of Google search results before resorting to asking here! /sigh. Thanks if you can help. Here's my code, pretty much verbatim out of his book:
NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:#"Yonah" ofType:#"caf"];
NSLog(#"%#", soundFilePath);
NSURL *fileURL = [NSURL URLWithString:soundFilePath];
NSError *error;
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:fileURL error:&error];
if (!error)
{
audioPlayer.delegate = self;
//audioPlayer.numberOfLoops = -1;
[audioPlayer play];
}
else
{
NSLog(#"Error loading audio clip: %#", [error localizedDescription]);
}
EDIT: Holy Shinto. I figured out what it was. I changed
NSURL *fileURL = [NSURL URLWithString:soundFilePath];
to
NSURL *fileURL = [NSURL fileURLWithPath:soundFilePath];
to the latter and I was getting a weird error, weirder than the one in the subject BUT I googled that and I changed my OS input device from my webcam to my internal microphone and guess what, it worked under the fileURLWithPath method. I'll be. Damned.
try this one- convert your url into NSdata
NSString* resourcePath = self.audioStr; //your url
NSData *_objectData = [NSData dataWithContentsOfURL:[NSURL URLWithString:resourcePath]];
NSError *error = [[NSError alloc] init];
NSLog(#"url is %#",resourcePath);
audioPlayer = [[AVAudioPlayer alloc] initWithData:_objectData error:&error];
audioPlayer.numberOfLoops = 0;
if (error)
{
NSLog(#"Error in audioPlayer: %#",
[error localizedDescription]);
} else {
audioPlayer.delegate = self;
[audioPlayer prepareToPlay];
}`
Try to read the audio file with something like this:
audioPlayer_ = [[AVAudioPlayer alloc] initWithContentsOfURL:
[NSURL fileURLWithPath:[NSString stringWithString:soundFilePath_]]
error:&error];
I had code in a old sdk 3.0 project of mine that is not working with the new sdk. I have copied the code in a very simple project (just a uivue project and I put the sound code in onload) to make sure nothing else I did is messing it up.
I'm getting a error code -46, Domain NSOSStatusErrorDomain
code
- (void)viewDidLoad
{
NSURL *url = [NSURL fileURLWithPath:[NSString stringWithFormat:#"EvilDrop-2.mp3",
[[NSBundle mainBundle] resourcePath]]];
NSError *error;
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error];
audioPlayer.volume=1.0;
audioPlayer.numberOfLoops= 0;
[audioPlayer play];
audioPlayer.delegate = self;
}
That's because you're not using -[NSString stringWithFormat: correctly. However, you don't need that method.
Try this code:
NSURL *myURL;
myURL = [[NSBundle mainBundle]
URLForResource:#"MyFile"
withExtension:#"mp3"];