Is there an ability to load files like documents, articles from server and store them in application local storage using Filemanager? And how then users can read these files? Do they have access to that folder?
Follow these steps for downloading and saving file in NSDocumentDirectory
// Determine local file path
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *filePath = [NSString stringWithFormat:#"%#/%#", [paths objectAtIndex:0],#"fileName.doc"]; //it could be any file type
// Download and write to file
NSURL *url = [NSURL URLWithString:#"http://www.filePathFromServerLocation.com"];
//and write to file
NSData *urlData = [NSData dataWithContentsOfURL:url];
[urlData writeToFile:filePath atomically:YES];
This way your file will be save at filePath and u can use it in future whatever the way u like.
Opening a file in iOS:
Using a webview
NSString *path = [[NSBundle mainBundle] pathForResource:#"document" ofType:#"pdf"];
NSURL *targetURL = [NSURL fileURLWithPath:path];
NSURLRequest *request = [NSURLRequest requestWithURL:targetURL];
[webView loadRequest:request];
using a UIDocumentInteractionController.
Have a look at this Apple sample code for ZoomingPDFViewer
Related
I want to download a PDF file then open it in a webView. I searched about that then I found this issu. The accepted answer describes how to download and display the file. When I test it, I can not find the file in the Documents because it's stored inside my app. Also I don't think that the file is saved because the pdf is never shown in the webView even if I pass the filePath to be loaded. This is the code of the answer:
// Get the PDF Data from the url in a NSData Object
NSData *pdfData = [[NSData alloc] initWithContentsOfURL:[
NSURL URLWithString:#"http://www.example.com/info.pdf"]];
// Store the Data locally as PDF File
NSString *resourceDocPath = [[NSString alloc] initWithString:[
[[[NSBundle mainBundle] resourcePath] stringByDeletingLastPathComponent]
stringByAppendingPathComponent:#"Documents"
]];
NSString *filePath = [resourceDocPath
stringByAppendingPathComponent:#"myPDF.pdf"];
[pdfData writeToFile:filePath atomically:YES];
// Now create Request for the file that was saved in your documents folder
NSURL *url = [NSURL fileURLWithPath:filePath];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
[webView setUserInteractionEnabled:YES];
[webView setDelegate:self];
[webView loadRequest:requestObj];
And this is what I see in the log:
libMobileGestalt MobileGestaltSupport.m:153: pid 2828 (my_app) does not have sandbox access for frZQaeyWLUvLjeuEK43hmg and IS NOT appropriately entitled
2017-08-01 10:29:06.882562+0100 my_app[2828:1334057] libMobileGestalt MobileGestalt.c:550: no access to InverseDeviceID (see <rdar://problem/11744455>)
What is the problem with what I did? And how can I put the downloaded file in the Documents app of my iPhone in order to be checked whenever the user want like any other PDF?
Sandbox path Error
NSString *resourceDocPath = [[NSString alloc] initWithString:[
[[[NSBundle mainBundle] resourcePath] stringByDeletingLastPathComponent]
stringByAppendingPathComponent:#"Documents"
]];
Please use your sandbox path instead of bundle path.
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
This question is kind of self-explanatory but I'll explain it anyways. For some reason when I try and load a new web page it will see the web page URL except it won't load it the first time you press the button. Only when you press the button again will it actually load. How do I fix this?
Here's the code for my button:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *filePath = [NSString stringWithFormat:#"%#/%#", [paths objectAtIndex:0],#"index.html"];
// Download and write to file
NSURL *url = [NSURL URLWithString:_varString];
NSData *urlData = [NSData dataWithContentsOfURL:url];
[urlData writeToFile:filePath atomically:YES];
//Load file in UIWebView
[_Hoot loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:filePath]]];
*Also note, even though I'm copying the web page here and then loading it from a file, I still get the same problem if I'm just loading it from a URL.
Try this:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *filePath = [NSString stringWithFormat:#"%#/%#", [paths objectAtIndex:0],#"index.html"];
// Download and write to file
NSURL *url = [NSURL URLWithString:_varString];
NSData *urlData = [NSData dataWithContentsOfURL:url];
[urlData writeToFile:filePath atomically:YES];
//Load file in UIWebView
NSURL *urlen = [NSURL fileURLWithPath:filePath];
NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:urlen];
[_Hoot loadRequest:urlRequest];
I'm making an iPhone app, that will download a PDF file and display it in a webView.
However my script will not show the downloaded PDF. It does download it and save it in Documents, but the webView will not show it.
Here's my script:
NSString *path = [[NSBundle mainBundle] pathForResource:#"3" ofType:#"pdf"];
NSURL *urlen = [NSURL fileURLWithPath:path];
NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:urlen];
[webView loadRequest:urlRequest];
[webView setScalesPageToFit:YES];
From the official documentation on NSURL official documentation on NSURL.
Sending nil as the argument to fileURLWithPath: produces an exception.
The problem then is actually with [[NSBundle mainBundle] pathForResource:ofType:]. This is returning nil, rather than an actual path to a file.
The problem here is actually that [NSBundle mainBundle] refers to files that are bundle with your app. You need to look in your app's document directory, which is where it stores files it has downloaded.
This method will give you the path to your app's document directory:
NSString* documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
Now, just append the file name to this path:
NSString *pdfPath = [documentsPath stringByAppendingPathComponent:#"3.pdf"];
And for good measure (because crashes are always bad), make sure the file exists as such:
BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:pdfPath];
And finish as such:
if (fileExists) {
NSURL *urlen = [NSURL fileURLWithPath:pdfPath];
NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:urlen];
[webView loadRequest:urlRequest];
[webView setScalesPageToFit:YES];
} else {
// probably let the user know there's some sort of problem
}
To serialize the pdf I believe you could use NSData dataWithURL: and store in Core Data. I'm unsure as to how you'd deserialize back to a pdf however and view it with UIWebView.
You can use CGPDFDocumentCreateWithProvider:
If your NSData reference is pdfData then:
CFDataRef myPDFData = (CFDataRef)pdfData;
CGDataProviderRef provider = CGDataProviderCreateWithCFData(myPDFData);
CGPDFDocumentRef pdf = CGPDFDocumentCreateWithProvider(provider);
But I guess you just want to display it in a web view and the above is not what you need.
However if you already have the url wouldn't it be easier to store the URL rather than the pdf as such.
Also if you have the data you can write it into a file inside your documents directory temporarily and then use web view to load this url.
i.e;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *appFile = [documentsDirectory stringByAppendingPathComponent:#"New1.pdf"];
NSURL *fileURL = [NSURLRequest requestWithURL:appFile];
[data writeToURL:fileURL atomically:YES];
and then :
NSURLRequest *request = [NSURLRequest requestWithURL:fileURL];
[webView loadRequest:request];
And if you want to remove the file from the documents directory you could use:
[[NSFileManager defaultManager] removeItemAtURL:fileUrl error:nil];
to remove the temporary pdf you created.
I'm trying to download content with an URL to a local file system in my iPad (cachedDir ? )
with this function:
- (IBAction)download:(id)sender {
NSURL *url = [NSURL URLWithString:#"http:www.google.de"];
ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
[request setDelegate:self];
[request startAsynchronous];
[request setDownloadDestinationPath:#"/Users/ben/Desktop/my_file.pdf"]; // Which //directory??
}
Which directory do I have to choose for my path if I want to store the data as long as possible without getting rejected by Apple,
and how do I retrieve the data I've saved?
Can somebody help?
The best place to store documents that you want to keep around is your application's Documents directly. You can find the path to it like so:
// Returns the URL to the application's Documents directory.
- (NSURL *)applicationDocumentsDirectory
{
return [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject];
}
Apple have a useful piece of documentation about the iOS file system and where to store particular types of files: http://developer.apple.com/library/mac/#documentation/FileManagement/Conceptual/FileSystemProgrammingGUide/FileSystemOverview/FileSystemOverview.html
Try out this my code for save pdf in document using below code
NSString *downloadUrl=[NSURL URLWithString:#"http:www.google.de"];
NSData *pdfData = [[NSData alloc] initWithContentsOfURL:[NSURL URLWithString:downloadUrl]];
//Store the Data locally as PDF File
NSString *resourceDocPath = [[NSString alloc] initWithString:[[[[NSBundle mainBundle] resourcePath] stringByDeletingLastPathComponent] stringByAppendingPathComponent:#"Documents"]];
NSString *pdf1 = #"title.pdf";
NSString *filePath = [resourceDocPath stringByAppendingPathComponent:pdf1];
[pdfData writeToFile:filePath atomically:YES];
and retrive your file using
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSURL *pdfURL = [[NSBundle bundleWithPath:[paths objectAtIndex:0]] URLForResource:[NSString stringWithFormat:#"title.pdf"] withExtension:nil];
NSLog(#"pDF URl %#", pdfURL);
pdf = CGPDFDocumentCreateWithURL((CFURLRef)pdfURL);