iPhone: Using Alerts to Help Debugging

I've been building a rather complex system and there's come the time now where I want more concise debugging. I would like to display the contents of a variable (for this example an NSString called v_string) in a notification window (the kind o开发者_Go百科f window that appear when you receive an SMS text).

Is there an easy way to just call an alert with a variable?

Thanks in Advance,

Dan

NSLog does not do? If not (like if you need to debug an application running on a disconnected device), you can extend the UIAlertView with a category:

@implementation UIAlertView (Logging)

+ (void) log: (id <NSObject>) anObject
{
    NSString *message = [anObject description];
    UIAlertView *alert = [[self alloc] initWith…];
    [alert show];
    [alert release];
}

And then in code:

NSString *anInterestingString = …;
[UIAlertView log:anInterestingString];

When you build the string to display in the alert window, simply append your variable's string represenation using stringByAppendingString.

Alert window is cumbersome. Use NSLog instead:

NSLog(@"Variable is: %@", v_string);

And in Xcode's console you will see that text.

UIAlertView *message = [[UIAlertView alloc] initWithTitle:@"My Debug String" message:v_string delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
[message show];
[message release];

I think this way you can see what you want. But, as zoul said, why not to use NSLog(@"my var: %@", v_string); ?

Hope that it helps.