I am new in iOS and while I scroll PDF file on UIWebView it hangs. I am using code like this
String = [String stringByReplacingOccurrencesOfString:#" " withString:#"%20"];
NSString *urlAddress = String;
NSURL *url = [[NSURL alloc] initWithString:urlAddress];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSLog(#"Downloading Started");
NSString *urlToDownload = String;
NSURL *url = [NSURL URLWithString:urlToDownload];
NSData *urlData = [NSData dataWithContentsOfURL:url];
if ( urlData )
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *Title=TranningTitle;
Title = [Title stringByReplacingOccurrencesOfString:#" " withString:#"%20"];
NSString *format=#".pdf";
NSString *finalString=[NSString stringWithFormat:#"%#%#",Title,format];
NSString *filePath = [NSString stringWithFormat:#"%#/%#", documentsDirectory,finalString];
NSLog(#"File Path =%#",filePath);
//saving is done on main thread
dispatch_async(dispatch_get_main_queue(), ^{
[urlData writeToFile:filePath atomically:YES];
NSLog(#"File Saved !");
[Showwebview loadRequest:requestObj];
});
}
});
It mostly hang on iPad.
Try using Quicklook framework instead. Click here for sample code
Related
I am getting responseObject like this
responseObject =
{
"img": "images/ProfileImage/defaultImg.jpg",
}
I have to store this image in app folder. Is there any way to do this.
The path is incomplete
You need to append base URL before "images/ProfileImage/defaultImg.jpg"
Then
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSString *urlToDownload = BaseURL + "images/ProfileImage/defaultImg.jpg";
NSURL *url = [NSURL URLWithString:urlToDownload];
NSData *urlData = [NSData dataWithContentsOfURL:url];
if (urlData)
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:#"%#/%#", documentsDirectory,#"defaultImg.png"];
//saving is done on main thread
dispatch_async(dispatch_get_main_queue(), ^{
[urlData writeToFile:filePath atomically:YES];
NSLog(#"File Saved !");
});
}
});
Here is the code for downloading image and store into a local i.e "Document" directory in iOS app folder
In below code urlString is the url of image.
dispatch_queue_t downloadThumbNail = dispatch_queue_create("com.download.thumbnail", NULL);
dispatch_async(downloadThumbNail, ^
{
NSData *imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:urlString]];
UIImage *imageThumb = [UIImage imageWithData:imageData];
dispatch_async(dispatch_get_main_queue(),
^{
NSString *str = #“filename.png”;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsPath = [paths objectAtIndex:0];
NSString *filePath = [documentsPath stringByAppendingPathComponent:str];
NSData *pngData = UIImagePNGRepresentation(imageThumb);
[pngData writeToFile:filePath atomically:YES];
});
});
Enjoy codeing.
I tried till downloading but downloaded video is showing not supported plz help thanks for help.
Here is my code:
Downloading video from url code
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSLog(#"Downloading Started");
NSString *urlToDownload = #"http://cdn-fms.rbs.com.br/vod/hls_sample1_manifest.m3u8";
NSURL *url = [NSURL URLWithString:urlToDownload];
NSData *urlData = [NSData dataWithContentsOfURL:url];
if ( urlData )
{
NSLog(#"urldata %# ",urlData);
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:#"%#/%#", documentsDirectory,#"thefifle2.mov"];
//saving is done on main thread
dispatch_async(dispatch_get_main_queue(), ^{
[urlData writeToFile:filePath atomically:YES];
NSLog(#"File Saved !%#",filePath);
_url = [NSURL URLWithString:filePath];
[self playv];
});
}
});
Play downloaded video using MPMoviepLayercontroller
NSURL *vedioURL;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSArray *filePathsArray = [[NSFileManager defaultManager] subpathsOfDirectoryAtPath:documentsDirectory error:nil];
NSLog(#"files array %#", filePathsArray);
NSString *fullpath;
for (NSString *apath in filePathsArray )
{
fullpath = [documentsDirectory stringByAppendingPathComponent:apath];
vedioURL =[NSURL fileURLWithPath:fullpath];
}
NSData *urlData1 = [NSData dataWithContentsOfURL:vedioURL];
NSLog(#" url data1 %# ",urlData1);
NSLog(#"vurl %#",vedioURL);
MPMoviePlayerViewController *videoPlayerView = [[MPMoviePlayerViewController alloc] initWithContentURL:vedioURL];
[self presentMoviePlayerViewControllerAnimated:videoPlayerView];
[videoPlayerView.moviePlayer play];
I tried with some mp4 Examples worked for me
//download the file in a seperate thread.
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSLog(#"Downloading Started");
NSString *urlToDownload = #"http://techslides.com/demos/sample-videos/small.mp4";
NSURL *url = [NSURL URLWithString:urlToDownload];
NSData *urlData = [NSData dataWithContentsOfURL:url];
if ( urlData )
{
NSLog(#"urldata %# ",urlData);
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:#"%#/%#", documentsDirectory,#"demo2.mp4"];
//saving is done on main thread
dispatch_async(dispatch_get_main_queue(), ^{
[urlData writeToFile:filePath atomically:YES];
NSLog(#"File Saved !%#",filePath);
_url = [NSURL URLWithString:filePath];
});
}
});
You do realize that your URL doesn't actually point to a "video" file?
.m3u8 Files are not actual Asset files, rather, they are more akin to a playlist. They are used in HTTP Live Streaming and provide a location for "Segments" based on available bandwidth
I want to download one xml file that share in GitHub. This is my code but my result is site's xml. Where am I going wrong?
This is my code:
NSString *urlToDownload = #"https://github.com/qazaleh/xml-file/blob/master/result.xml";
NSURL *url = [NSURL URLWithString:urlToDownload];
NSData *urlData = [NSData dataWithContentsOfURL:url];
if ( urlData )
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:#"%#/%#", documentsDirectory,#"result"];
NSLog(#"Downloading Started %#",filePath);
//saving is done on main thread
[urlData writeToFile:filePath atomically:YES];
}
}
Hi I am getting single image from server using url in iOS.
my code is like this
- (IBAction)overlaysClicked:(id)sender
{
NSLog(#"overlays Clicked");
request = [NSURLRequest requestWithURL:[NSURL URLWithString:#"http://sukhada.co.in/img/overlays/neon/ov1.png"]];
[NSURLConnection connectionWithRequest:request delegate:self];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *localFilePath = [documentsDirectory stringByAppendingPathComponent:#"image.jpg"];
NSData *thedata = [NSData dataWithContentsOfURL:[NSURL URLWithString:#"http://sukhada.co.in/img/overlays/neon/ov1.png"]];
[thedata writeToFile:localFilePath atomically:YES];
UIImage *img = [[UIImage alloc] initWithData:thedata];
self.overlayImgView.image=img;
}
To get multiple images from server my code like this
NSURL *myUrl = [NSURL URLWithString:#"http://sukhada.co.in/img/overlays/neon.zip"];
NSURLRequest *myRequest = [NSURLRequest requestWithURL:myUrl cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:60];
myData = [[NSMutableData alloc] initWithLength:0];
NSURLConnection *myConnection = [[NSURLConnection alloc] initWithRequest:myRequest delegate:self startImmediately:YES];
//my Array is like this in viewDidload
self.overlaysImgsArray = [[NSMutableArray alloc]initWithContentsOfURL:[NSURL URLWithString:#"http://sukhada.co.in/img/overlays/neon.zip"]];
NSLog(#"urls is %#",overlaysImgsArray);
for (int i=0; i<[overlaysImgsArray count]; i++)
//download array have url links
{
NSURL *URL = [NSURL URLWithString:[overlaysImgsArray objectAtIndex:i]];
NSMutableURLRequest *urlRequest = [[NSMutableURLRequest alloc]initWithURL:URL];
NSOperationQueue *queue = [[NSOperationQueue alloc]init];
[NSURLConnection sendAsynchronousRequest:urlRequest queue:queue completionHandler:^(NSURLResponse *response, NSData *data, NSError *error)
{
if([data length] > 0 && [[NSString stringWithFormat:#"%#",error] isEqualToString:#"(null)"])
{
//make your image here from data.
UIImage *imag = [[UIImage alloc] initWithData:[NSData dataWithData:data]];
NSArray *array = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docDir = [array objectAtIndex:0];
NSString *imgstr=[NSString stringWithFormat:#"%d",i];
NSString *pngfilepath = [NSString stringWithFormat:#"%#sample%#.png",docDir,imgstr];
NSData *data1 = [NSData dataWithData:UIImagePNGRepresentation(imag)];
[data1 writeToFile:pngfilepath atomically:YES];
}
else if ([data length] == 0 && [[NSString stringWithFormat:#"%#",error] isEqualToString:#"(null)"])
{
NSLog(#"No Data!");
}
else if (![[NSString stringWithFormat:#"%#",error] isEqualToString:#"(null)"]){
NSLog(#"Error = %#", error);
}
}];
}
}
But this is not working for me please anybody suggest me how to get multiple images from server using one url which contains all the images. Please anybody
thank you in advance
In your case you can try like this
first you need to save all the 10 image in directory and the fetch one by one as your requirement .this code save all image from your url
try this
- (IBAction)overlaysClicked:(id)sender {
//Note all your image saved with ov1.png,ov2.png......& so .
for (int i=1; i<=10; i++) {
NSString *st2=#"ov";
NSString *st1=#"http://sukhada.co.in/img/overlays/neon/ov";
NSString *imageN=[st2 stringByAppendingString:[NSString stringWithFormat:#"%d",i]];
NSString *imgNameforkey=[imageN stringByAppendingString:#".png"];
NSString *url=[st1 stringByAppendingString:[NSString stringWithFormat:#"%d",i]];
NSString *imgname=[url stringByAppendingString:#".png"];
NSLog(#" all=%#",imgname);
NSLog(#"overlays Clicked");
request = [NSURLRequest requestWithURL:[NSURL URLWithString:imgname]];
[NSURLConnection connectionWithRequest:request delegate:self];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *localFilePath = [documentsDirectory stringByAppendingPathComponent:imgname];
NSData *thedata = [NSData dataWithContentsOfURL:[NSURL URLWithString:imgname]];
[thedata writeToFile:localFilePath atomically:YES];
UIImage *img = [[UIImage alloc] initWithData:thedata];
NSLog(#"imgs %#",img);
// self.overlayImgView.image=img;
}
}
here you can see all image saved
fetch the image
using loop or with name
NSArray *directoryPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
NSString *imagePath = [directoryPath objectAtIndex:0];
imagePath= [imagePath stringByAppendingPathComponent:#"ov1.png"];
NSData *data = [NSData dataWithContentsOfFile:imagePath];
UIImage *img = = [UIImage imageWithData:data];
download a zip file from url and save it .use this code inside the button action. no need for loop now. try this
- (IBAction)overlaysClicked:(id)sender {
dispatch_queue_t queue = dispatch_get_global_queue(0,0);
dispatch_async(queue, ^{
NSLog(#"Beginning download");
NSString *stringURL = #"http://sukhada.co.in/img/overlays/neonra.zip";
NSURL *url = [NSURL URLWithString:stringURL];
NSData *urlData = [NSData dataWithContentsOfURL:url];
//Find a cache directory. You could consider using documenets dir instead (depends on the data you are fetching)
NSLog(#"Got the data!");
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *path = [paths objectAtIndex:0];
//Save the data
NSLog(#"Saving");
NSString *dataPath = [path stringByAppendingPathComponent:#"img.zip"];
dataPath = [dataPath stringByStandardizingPath];
[urlData writeToFile:dataPath atomically:YES];
});
}
and check you will get img.zip file
I want save json file from server each time, when user have internet connection to use it when iPhone doesnt have internet connection. But it doesn't working. Here is my code:
- (void)writeJsonToFile
{
//applications Documents dirctory path
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
//live json data url
NSString *stringURL = #"http://volodko.info/ic/json.php";
NSURL *url = [NSURL URLWithString:stringURL];
NSData *urlData = [NSData dataWithContentsOfURL:url];
//attempt to download live data
if (urlData)
{
NSString *filePath = [NSString stringWithFormat:#"%#/%#", documentsDirectory,#"data.json"];
[urlData writeToFile:filePath atomically:YES];
}
//copy data from initial package into the applications Documents folder
else
{
//file to write to
NSString *filePath = [NSString stringWithFormat:#"%#/%#", documentsDirectory,#"data.json"];
//file to copy from
NSString *json = [ [NSBundle mainBundle] pathForResource:#"data" ofType:#"json" inDirectory:#"html/data" ];
NSData *jsonData = [NSData dataWithContentsOfFile:json options:kNilOptions error:nil];
//write file to device
[jsonData writeToFile:filePath atomically:YES];
}
}
try this . . .
- (void)writeJsonToFile
{
//applications Documents dirctory path
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
//live json data url
NSString *stringURL = #"http://volodko.info/ic/json.php";
NSURL *url = [NSURL URLWithString:stringURL];
NSData *urlData = [NSData dataWithContentsOfURL:url];
//attempt to download live data
if (urlData)
{
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:#"data.json"];
[urlData writeToFile:filePath atomically:YES];
}
//copy data from initial package into the applications Documents folder
else
{
//file to write to
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:#"data.json"];;
//file to copy from
NSString *json = [ [NSBundle mainBundle] pathForResource:#"data" ofType:#"json" inDirectory:#"html/data" ];
NSData *jsonData = [NSData dataWithContentsOfFile:json options:kNilOptions error:nil];
//write file to device
[jsonData writeToFile:filePath atomically:YES];
}
}
This works for me. Read the AFJSONRequestOperation guide. The code also checks if the json-file already have been cached.
NSString *path = #"http://volodko.info/ic/json.php";
NSURL *url = [[NSURL alloc] initWithString:path];
NSURLRequest *request = [[NSURLRequest alloc] initWithURL:url];
id cachedJson = [[NSUserDefaults standardUserDefaults] valueForKey:path];
if (cachedJson) {
[self didUpdateJSON:cachedJson];
} else {
AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) {
[self didUpdateJSON:JSON];
dispatch_async(dispatch_get_main_queue(), ^{
[[NSUserDefaults standardUserDefaults] setObject:JSON forKey:path];
[[NSUserDefaults standardUserDefaults] synchronize];
});
} failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) {
NSLog(#"Request Failed with Error: %#, %#", error, error.userInfo);
}];
[operation start];
}
Fetch data from JSON parser and store it in an array. After that you can add it to a SQLite database.
You should create path in proper way
replace this
NSString *filePath = [NSString stringWithFormat:#"%#/%#", documentsDirectory,#"data.json"];
with
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:#"data.json"];
Anton , fetch the json data and store in the nsmutable array at the first time you Array hold the data when u run again ur array not a nil but replay the data to the second time ... and another way to store the data in local database...if u r needed to store the data..
but ur problem is solve for first one..ok best of luck..
Try using NSUserDefaults instead of writing this small JSON text to a file
- (void)writeJsonToFile
{
NSString *jsonString;
NSString *stringURL = #"http://volodko.info/ic/json.php";
NSURL *url = [NSURL URLWithString:stringURL];
NSData *urlData = [NSData dataWithContentsOfURL:url];
if (urlData)
{
// JSON successfully downloaded, store it to user defaults
jsonString = [[NSString alloc] initWithData:urlData encoding:NSUTF8StringEncoding];
[[NSUserDefaults standardUserDefaults] setValue:jsonString forKey:#"jsonString"];
}
else
{
// no urlData, using stored JSON
jsonString = [[NSUserDefaults standardUserDefaults] valueForKey:#"jsonString"];
}
}
possibly even better:
- (NSString *)getJSON
{
<the code above>
return jsonString;
}
and then use it in other functions as:
NSString *jsonString = [self getJSON];