经过几次尝试,我无法理解错误是错误以及为什么图像没有出现......
我的协议.h
#import <Foundation/Foundation.h>
@protocol myProtocol <NSObject>
-(UIImage *)transferImage;
@end
视图控制器.h
#import "SecondViewController.h"
@interface ViewController : UIViewController<myProtocol, UINavigationControllerDelegate>
{
UIView *view;
}
@property (nonatomic,retain) UIImageView *imageView;
- (IBAction)sendImage:(id)sender;
@end
视图控制器.m
#import "ViewController.h"
#import "SecondViewController.h"
#import "myProtocol.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
_imageView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"VoodooVibeThumb@2x.png"]];
[view addSubview:_imageView]; NSLog(@"VoodooVibeThumb@2x.png");
}
-(UIImage *)transferImage
{
NSLog(@"VoodooVibeThumb@2x.png");
return _imageView.image;
}
- (IBAction)sendImage:(id)sender
{
SecondViewController *secClass = [[SecondViewController alloc] init];
[secClass setImageName:@"VoodooVibeThumb@2x.png"];
[self.navigationController pushViewController:secClass animated:YES];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
@end
SecondViewController.h
#import <UIKit/UIKit.h>
#import "myProtocol.h"
#import "ViewController.h"
@interface SecondViewController: UIViewController <myProtocol, UINavigationControllerDelegate>
{
UIView *secondView; IBOutlet UIImageView *myImage; id <myProtocol> myDelegate;
}
@property (nonatomic,retain) UIImageView *myImage;
@property (nonatomic,retain) UIImage *transferImage;
@property(nonatomic,assign) id delegate;
@property (strong, nonatomic)NSString *imageName;
-(void)callTransfer;
@end
第二视图控制器.m
#import "SecondViewController.h"
#import "ViewController.h"
#import "myProtocol.h"
@interface SecondViewController ()
@end
@implementation SecondViewController
@synthesize delegate, myImage, transferImage;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self)
{
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
[secondView addSubview:myImage];
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[myImage setImage:[UIImage imageNamed:_imageName]];
}
-(void)callTransfer
{
myImage.image=[delegate performSelector:@selector(transferImage)];
myImage.image=[UIImage imageNamed:@"VoodooVibeThumb@2x.png"];
NSLog(@"%@",myImage.image);
NSLog(@"I am in call transfer");
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
@end