////  main.m//  Hello////  Created by lishujun on 14-8-28.//  Copyright (c) 2014年 lishujun. All rights reserved.//#import <UIKit/UIKit.h>// 视图控制器对象@interface HelloWorldViewController : UIViewController@end@implementation HelloWorldViewController-(void) loadView{    //创建视图对象    UIView *contentView = [[UIView alloc]initWithFrame:[[UIScreen mainScreen] applicationFrame]];    contentView.backgroundColor = [UIColor lightGrayColor];    self.view = contentView;        UIImageView *imageView =[[UIImageView alloc]initWithFrame:CGRectMake(70, 100, 100, 100)];    imageView.image = [UIImage imageNamed:@"100.png"];    imageView.userInteractionEnabled = YES;    UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(UesrClicked:)];    [imageView addGestureRecognizer:singleTap];        UIImageView *imageView2 =[[UIImageView alloc]initWithFrame:CGRectMake(70, 240, 100, 100)];    imageView2.image = [UIImage imageNamed:@"100.png"];    imageView2.userInteractionEnabled = YES;    UITapGestureRecognizer *singleTap2 = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(UesrClicked:)];    [imageView2 addGestureRecognizer:singleTap2];        [contentView addSubview:imageView];    [contentView addSubview:imageView2];}-(void) UesrClicked:(id)sender{    //NSLog(@"%@", ((UIImageView*)((UITapGestureRecognizer *)sender).view).image);    NSLog(@"%@",sender);}@end// 委托对象@interface HelloWorldAppDelegate : NSObject <UIApplicationDelegate>{    IBOutlet UIWindow *window;}@property (nonatomic, retain) UIWindow *window;//必须声明为属性,声明为局部变量则无法绘制视图，显示为黑屏@end@implementation HelloWorldAppDelegate@synthesize window;-(void) applicationDidFinishLaunching:(UIApplication *)application{    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen]bounds]];    HelloWorldViewController *viewController = [[HelloWorldViewController alloc]init];    self.window.rootViewController = viewController;    [self.window makeKeyAndVisible];}@end// 程序入口int main(int argc, char * argv[]){    @autoreleasepool {        return UIApplicationMain(argc, argv, nil, @"HelloWorldAppDelegate");    }}