Counting presses to a UIButton

开发者_运维知识库I have a UILabel and a UIButton in a XIB, and I want the UILabel to reflect the number of times the user has pressed the UIButton, e.g. when I click the button, the label shows 1, when I click it again, it shows 2.

Thanks

-(IBAction)buttonPressed
{
    static int count;
    count++;
    label1.text = [NSString stringWithFormat:@"%d", count];
}

Header (.h) file:

#import <UIKit/UIKit.h>

@interface SampleAppDelegate : NSObject <UIApplicationDelegate> {
    UIWindow *window;   
    IBOutlet UILabel * theLabel;
    int count;
}

- (IBAction)theButton:(id)sender;

@property (nonatomic, retain) IBOutlet UIWindow *window;

@end

Implementation (.m) file:

#import "SampleAppDelegate.h"

@implementation SampleAppDelegate

@synthesize window;

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    
    count = 0;
    theLabel.text = [NSString stringWithFormat:@"%d", count];
    [self.window makeKeyAndVisible];
    return YES;
}

- (IBAction)theButton:(id)sender {
    count++;
    theLabel.text = [NSString stringWithFormat:@"%d",count];
}

- (void)dealloc {
    [window release];
    [super dealloc];
}

@end

So basically:
- Create new window-based app with the name Sample
- Edit SampleAppDelegate.m and SampleAppDelegate.h
- Connect theLabel to the UILabel in Interface Builder
- Connect the UIButton to theButton in Interface Builder
- Finally hit Build and Run