I have a app which takes a movie and saves it to the apps temp folder after the video is completed i need to move it to video folder on the device.... How would this be accomplished using Default File manager ?
Source code i found.... and if i save the file in the documents directory am will i be able to access it from Video app on iPhone?
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *txtPath = [documentsDirectory stringByAppendingPathComponent:#"txtFile.txt"];
if ([fileManager fileExistsAtPath:txtPath] == NO) {
NSString *resourcePath = [[NSBundle mainBundle] pathForResource:#"txtFile" ofType:#"txt"];
[fileManager copyItemAtPath:resourcePath toPath:txtPath error:&error];
}
NSDocumentDirectory is sandboxed for every iOS app. The API you are looking for is UISaveVideoAtPathToSavedPhotosAlbum.
For example:
UISaveVideoAtPathToSavedPhotosAlbum(videoPath, nil, nil, nil);
Related
In my app, I load data from a CSV file stored in the bundle resources. However, I'd like to be able to update this file programmatically when the user taps the Update button. Is there a way to change a resource in the app bundle programatically? Here is the code I use to access the file:
NSString *path = [[NSBundle mainBundle] pathForResource:#"query_result" ofType:#"csv"];
NSArray *rows = [NSArray arrayWithContentsOfCSVFile:path];
First of all load file from bundle and after that just store in Document directory then you can make change on this file again save on document directory to access changed file.
Use this code copy from mainbundle to Document.
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSString *dataPath = [[self applicationDocumentsDirectory] stringByAppendingPathComponent:#"tessdata"];
NSLog(#"Datapath is %#", dataPath);
// If the expected store doesn't exist, copy the default store.
if ([fileManager fileExistsAtPath:dataPath] == NO)
{
NSString *tessdataPath = [[NSBundle mainBundle] pathForResource:#"eng" ofType:#"traineddata"];
[fileManager copyItemAtPath:tessdataPath toPath:dataPath error:&error];
}
-(NSString*) applicationDocumentsDirectory{
// Get the documents directory
NSArray *dirPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docsDir = [dirPaths objectAtIndex:0];
return docsDir;
}
And then get the Saved file to change...
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask,
YES);
NSString *fullPath = [[paths lastObject] stringByAppendingPathComponent:#"recentDownload.txt"];
I have been having an issue and I can't find anything about it.
I got some code to write files in the Documents folder with iOS. Checked the Apple documentation seems it's where I want to put the file for it to be available the next launch.
Here's the code I'm using:
- (void) writeToTextFile:(NSString *)logMessage inFile:(NSString *)fileName
{
//get the documents directory:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
//make a file name to write the data to using the documents directory:
NSString *filePath = [NSString stringWithFormat:#"%#/%#.txt", documentsDirectory, fileName];
NSLog(#"TEST path: %#", filePath);
//save logMessage to the documents directory
[logMessage writeToFile:filePath atomically:YES encoding:NSStringEncodingConversionAllowLossy error:nil];
}
Now I'm using unit tests on this methods. It was working fine on the iOS 7.0.3 simulator, but when I switched to iOS 6.0 it doesn't work anymore.
In fact I found out that there was no Documents folder in "Application Support/iPhone Simulator/6.0/" but there's one in the 7.0.3 folder.
I can't really find any differences on how writing to a file should be handled between 6 and 7. Should I test if the folder exists then create it if it's not there?
This works for me
NSString *string = #"Text to save";
NSString *filePath = #"filerecord.txt";
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docDir = [paths objectAtIndex:0];
NSString *filePath = [docDir stringByAppendingPathComponent:filePath];
[string writeToFile:filePath atomically:YES];
UPDATE
Create Documents directory if not exists
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
if (![fileManager fileExistsAtPath:documentsDirectory]) {
[fileManager createDirectoryAtPath:documentsDirectory withIntermediateDirectories:NO attributes:nil error:&error];
}
NSString *string = #"Text to save";
NSString *filePath = #"filerecord.txt";
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:filePath];
[string writeToFile:filePath atomically:YES];
I am implementing setting bundle first time and I have done it by creating Root.plist and Child.plist in Settings.bundle and have some fields in these plist.
I need to update the fields (add or remove) of Child.plist according to web services and I have written code for that in appdelegate. Its working fine in simulator (all fields are updated accordingly) but its not working in device.
Can any one suggest me what could be the reason of it.
code to copy plist to document directory and update that (as per the asnwer)
NSString *bundle = [[NSBundle mainBundle]pathForResource:#"Settings" ofType:#"bundle"];
NSString *path = [bundle stringByAppendingPathComponent:#"Category.plist"];
NSMutableDictionary *dictOfPlist = [NSDictionary dictionaryWithContentsOfFile:path];
NSMutableArray *dictArray = [dictOfPlist valueForKey:#"PreferenceSpecifiers"];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path1 = [documentsDirectory stringByAppendingPathComponent:#"Child.plist"];
NSFileManager *fileManager = [NSFileManager defaultManager];
if (![fileManager fileExistsAtPath: path1])
{
[fileManager copyItemAtPath:path toPath: path1 error:&error];
}
for (some condition)
{
// creating dictionary
// add dictionary to array dictArray
}
[dictOfPlist setObject:dictArray forKey:#"PreferenceSpecifiers"];
[dictOfPlist writeToFile:path1 atomically:YES];
I think you have a problem to write your PLIST. You need to copy your PLIST from your resources bundle into the documents directory and modify the PLIST inside this folder.
For that you can use this piece of code :
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"data.plist"];
NSFileManager *fileManager = [NSFileManager defaultManager];
if (![fileManager fileExistsAtPath: path])
{
NSString *bundle = [[NSBundle mainBundle] pathForResource:#”data” ofType:#”plist”];
[fileManager copyItemAtPath:bundle toPath: path error:&error];
}
Have a look here.
I want to delete an image from my iPhone app.
I use the method below, passing the name of the image as an argument.
The problem is that the image isn't deleted.
- (void)removeImage:(NSString*)fileName {
NSFileManager *fileManager = [NSFileManager defaultManager];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:
[NSString stringWithFormat:#"%#.png", fileName]];
[fileManager removeItemAtPath: fullPath error:NULL];
NSLog(#"image removed: %#", fullPath);
NSString *appFolderPath = [[NSBundle mainBundle] resourcePath];
NSLog(#"Directory Contents:\n%#", [fileManager directoryContentsAtPath: appFolderPath]);
}
The last two lines show the content in my app directory and the image I want to delete is still there. What am I doing wrong?
You are trying to delete a file in the Documents directory. You then read the contents of the bundle resources directory. These are not the same directory.
If you're trying to delete a file in the Documents directory, the you should rad that directory in your NSLog() at the end. If you're trying to delete a file inside your bundle, this is impossible. App bundles are signed and cannot be modified.
your code looks ok, so try adding some 'NSError' object to you code:
- (void)removeImage:(NSString*)fileName {
NSFileManager *fileManager = [NSFileManager defaultManager];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:
[NSString stringWithFormat:#"%#.png", fileName]];
NSError *error = nil;
if(![fileManager removeItemAtPath: fullPath error:&error]) {
NSLog(#"Delete failed:%#", error);
} else {
NSLog(#"image removed: %#", fullPath);
}
NSString *appFolderPath = [[NSBundle mainBundle] resourcePath];
NSLog(#"Directory Contents:\n%#", [fileManager directoryContentsAtPath: appFolderPath]);
}
In the code above I passed a NSError the error parameter of removeItemAtPath. If the system can't delete the file, this method will return NO and fill the error object with the error raised.
Based on your comment I found out that you are trying to delete the default.png and replace it with another one. Unfortunately, this is impossible. The image default.png is a part of your application bundle, which cannot be modified once it has been created and signed (this is a security measure from Apple, so applications cannot change after they have been reviewed). The only locations where you can create and delete files is inside the sandbox given to your application (the Documents folder).
Is it possible to write new file to bundle resource directory in iOS app?
No there is no way to write in the bundle dir.. because the bundle dir is code signed with SSL certificate and you can't break it. however you can easily write in the documents directory of you iphone application
You can get the documents directory path using this -
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
return [paths objectAtIndex:0];
Or you can copy the resources needed and then operate on files with writing permission.
NSArray *dirPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDir = dirPaths[0];
NSString *databasePath = [documentsDir stringByAppendingString:#"/TwigitDatabase.db"];
NSFileManager *fm = [NSFileManager defaultManager];
if(![fm fileExistsAtPath:databasePath]) { // Checking whether the my database was copied earlier, though it could be saved in some preferences property.
NSError *error;
NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:#"TwigitDatabase" ofType:#"db"];
[[NSFileManager defaultManager] copyItemAtPath:soundFilePath toPath:databasePath error:&error];
NSLog(#"%#", error);
}