I have this :
NSURL *url = [NSURL fileURLWithPath:#"/Users/myusername/Library/Application Support/iPhone Simulator/4.2/Applications/5ABF1395-4A80-46C0-BD4A-419ED98CE367/Documents/DBV/v.m4v"];
Then I launch movieViewController but it always crashes.. This code doesn't work on the iPhone simulator neither on the device... How can I fix it ?
EDIT :
Before to write file path by hand, I used the correct way to select a folder.
[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]
Then i got this log:
file://localhost/Users/myusername/Library/Application%20Support/iPhone%20Simulator/4.2/Applications/5ABF1395-4A80-46C0-BD4A-419ED98CE367/Documents/DBV/v.m4v
Then I thought it was because of spaces in folder name , so i decided to write the full path by hand for debugging (replacing each %20 by space)
EDIT 2 : Notice : I'm trying to access a dynamically created file in Documents folder, not a file from my bundle.
For files in documents, you should be getting the path from NSSearchPathForDirectoriesInDomains.
//get list of document directories in sandbox
NSArray *documentDirectories = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
//get one and only document directory from that list
NSString *documentDirectory = [documentDirectories objectAtIndex: 0];
Then you append the file name to that.
Related
I create a file with attribute NSFileappendonly, i am thinking this is enough to create readonly file in ios.My problem is try to remove the file from device it returns error.Please anyone help me..
A 513 states you do not have permission to write to that folder NSFileWriteNoPermissionError. You need to make sure you are only trying to write to one of the 3 folders in your app's dir (Documents, Temp, or Cache). Generally you use the Documents folder. (Trying to write directly to the main bundle can cause the error you are having)
iOS Environment
You can remove a file with NSFileManager but only if your app is signed and you are attempting to remove from one of the 3 allowed folders. Those 3 folders are only accessible by your app.
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectoryPath = [paths objectAtIndex:0];
NSString *yourFile = [documentsDirectoryPath stringByAppendingPathComponent:#"yourFile.txt"];
NSFileManager *fileManager = [NSFileManager defaultManager];
[fileManager removeItemAtPath:yourFile error:NULL];
Is there any way to save my .xml file to another directory other than "/Users/student/Library/Application Support/iPhone/Simulator/User/Applications/..."
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *appFile = [documentsDirectory stringByAppendingPathComponent:#"accUserNames.xml"];
BOOL ok = [content writeToFile:appFile atomically:YES encoding:NSUnicodeStringEncoding error:nil];
if (!ok) {
NSLog(#"Error writing file !");
}
i wish to writeToFile: my .xml file to the desktop , any idea on how?
May the below code help,
NSString *documentsDirectory = #"/Users/student/Desktop/";
NSString *appFile = [documentsDirectory stringByAppendingPathComponent:#"accUserNames.xml"];
BOOL ok = [content writeToFile:appFile atomically:YES encoding:NSUnicodeStringEncoding error:nil];
if (!ok) {
NSLog(#"Error writing file !");
}
From within the iPhone Simulator, you should be able to successfully use #"/Users/student/Desktop/accUserNames.xml" as the path to write to. However, you can't do this on an iOS device (you'll be restricted to the application's sandbox directory — it's recommended you write to the Documents folder or other folders in there, depending what type of data you're storing).
Edit: I think I understand your problem. This part of your code:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
effectively finds the path to "/Users/student/Library/Application Support/iPhone/Simulator/User/Applications/..." (this is the normal place you want to save things). But if you just want to save to the desktop temporarily, you should just use appFile = #"/Users/student/Desktop/accUserNames.xml".
Note: I don't advocate this as a long-term solution, but if you just want to see the output of your program temporarily, it works fine.
If you want to upload your file to a server ("www.blahblah.com" in your example), then using the write to file methods is not the correct approach. This is only for writing data to the local file system (or on a network share, but that doesn't apply to iPhones).
If you want to transfer data to a webserver, you will need to have something on the server that will listen for a connection request, then it will need to accept the data which is transferred from your app. You cannot just write a file to "www.blahblah.com" as you would to a file system
Probably not with code, but you could try this: Open "Automator" (in the Utilities folder) and chose "Folder Action". As Input folder, you specify the directory of the documents (/Users/student/Library/Application Support/iPhone/Simulator/User/Applications/...) and then you select, from "Files & Folders", "Duplicate Finder Items" and "Move Finder Items" and select the Desktop. Hit "Save", give it a name, and all files in the documents folder should be copied to the desktop.
Example: If I used this, where does the iPhone store the file?
if (![NSKeyedArchiver archiveRootObject:your_object toFile:#"filename.plist"])
// save failed.
On my mac the filename.plist goes to Macintosh HD directly. No folder. Also, the NSKeyedArchiver doesn't seem to ask for a path, just for a file name. Strange or not?
And how's that file backed up with iTunes?
Well that actually depends on where you ask it to save the file, in your case, you're telling
it to store filename.plist, which will be stored in your root / .
if you want to store it in a specific location , just give it the full path, something like what Diederik Hoogenboom told you (this will store it in the Documents dir)
OR just give it the absolute path you want to save the file to.
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [documentsDirectory stringByAppendingPathComponent: #"myFile.plist"];
[NSKeyedArchiver archiveRootObject:your_object toFile:filePath];
This should probably have cleared it up a little for you.
archiveRootObject:toFile: (has been deprecated).
So you should pass it a path instead of just a filename. Otherwise NSKeyedArchiver will assume you want to store it in the root of the devices hard disk.
Update:
With the data result generated with NSKeyedArchiver, use the Data.write(to:options:) instance method which writes the data object's bytes to the location specified by a given URL.
The proper location to store the files is the documents folder:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
I am having a hard time figuring out how to get the property list file that was created using Xcode. I created a property list file using array with NSString members. I want to grab that file and get all the NSString members and save it to a UITextField. But my problem is that I can't see that file. I don't know if I'm looking in the wrong path, or I don't know where the property file is saved.
Most likely, if the file was added via Xcode, the file is in your bundle. To open it use:
NSDictionary *plist = [NSDictionary arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:#"NameOfFile" ofType:#"plist"]];
Run this in the simulator and then look in the Finder, in Library/Application Support/iPhone Simulator/Applications/... to see if you can find the file, open it in and double check it to make sure Xcode added the file.
To make a copy in your Documents folder:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"My.plist"];
if (![plist writeToFile:path atomically:YES])
NSLog(#"not successful in writing the high scores");
I want to parse and XML file in an iPhone app without going to disk for it.
Can I do this? How? I have included a TXT helpfile in an app using MSVC.
I put the XML file in a Folder/Group named Resources in the project.
I have the XML file in the proj directory.
I right clicked on Resources folder and selected add -> Existing File.
I right-click on the XML file and select GetInfo.
There I have tried altering the Path Type {Absolute, Relative to Project , etc}
My program runs fine on the simulator when I use:
NSString * const DG_XmlRecipeFile = #"/Users/appleuser/Cocoa/iHungry6/Recipes.xml";
It seems to me it should also work with:
NSString * const DG_XmlRecipeFile = #"Recipes.xml";
If I set the Path Type correctly. It does not.
I am a first timer. Thanks for reading this , Mark
Xcode copies the project resources to the app bundle. You can access your file within your bundle as follows:
NSString *DG_XmlRecipeFile = [[NSBundle mainBundle] pathForResource:#"Recipes" ofType:#".xml"];
Files in the bundle are read-only. If you want to modify the file you will need to copy it somewhere that you can modify it. Your app's Documents directory works well for this.
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docsDirectory = [[paths objectAtIndex:0] retain];
NSString *newFilePath = [docsDirectory stringByAppendingPathComponent:#"Recipes.xml"];
NSError *error = nil;
[[NSFileManager defaultManager] copyItemAtPath:DG_XmlRecipeFile toPath:newFilePath error:&error];
I don't think the path type you are referring to is the path to the resource within the app bundle that is produced. It is how the file should be referenced within the .proj file.