NSData WriteToFile Not working?

[orange gold]

In my resources folder I have a file "index.html" .. I can load it into a webview just fine but I want to change the file to have different text and then reload it into the webview when a button is pressed.. I can't get it to work though? No clue what's wrong... keep getting sigbart...

Here is my code:

-(IBAction)editWebView {
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSError *error = [[NSError alloc] init]; 
    
    [fileManager removeItemAtPath:[[NSBundle mainBundle] pathForResource:@"index" ofType:@"html"] error:&error];
    
    NSString *myString = [[NSString alloc] initWithFormat:@"test"];
    
    [myString writeToFile:[[NSBundle mainBundle] pathForResource:@"index" ofType:@"html"] automatically:YES encoding:NSASCIIStringEncoding];
    
    [coloredText loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"index" ofType:@"html"]isDirectory:NO]]];
}

[BrianSlick]

You can't write into the bundle.

[Duncan C]

Originally Posted by orange gold

In my resources folder I have a file "index.html" .. I can load it into a webview just fine but I want to change the file to have different text and then reload it into the webview when a button is pressed.. I can't get it to work though? No clue what's wrong... keep getting sigbart...

Here is my code:

-(IBAction)editWebView {
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSError *error = [[NSError alloc] init]; 
    
    [fileManager removeItemAtPath:[[NSBundle mainBundle] pathForResource:@"index" ofType:@"html"] error:&error];
    
    NSString *myString = [[NSString alloc] initWithFormat:@"test"];
    
    [myString writeToFile:[[NSBundle mainBundle] pathForResource:@"index" ofType:@"html"] automatically:YES encoding:NSASCIIStringEncoding];
    
    [coloredText loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"index" ofType:@"html"]isDirectory:NO]]];
}

In iOS the app bundle is read-only. Any attempts to save, delete, or add files to the bundle will fail.

You need to copy the file to your documents directory on first launch, and then read/write that file instead of the one in the bundle.

[orange gold]

So what would I put inside my awakeFromNib code to copy the file and allow a re-writeable one? What's the function called?

[Duncan C]

Originally Posted by orange gold

So what would I put inside my awakeFromNib code to copy the file and allow a re-writeable one? What's the function called?

Take a look at the NSFileManager class. It has a couple of methods who's names start with "copyItem" that should do the trick.

By the way, you do not want this code in awakeFromNib. You want it in in the init method for your app delegate, so the file is copied over very early in the launch process.

You should check to see if the file already exists in the documents directory. (Do a search in the NSFileManager class for "exists" for a method to check if a file exists.) If so, you're done. If not, copy the file.

[orange gold]

Awesome, thanks!