关于在自定义的导航栏中使用UIImagePickerViewControlle

   今天做的项目需要通过自定义的导航栏中添加一个UIImagePickerViewControlle，但是添加之后发现无法正常显示导航栏的取消按钮无反应。后来通过查明，其实是内部实现了一些可以用的代理方法，只是没有去调用而已。具体的详情可以看用UIImagePickerViewController自定义相机界面  http://blog.sina.com.cn/s/blog_aedec703010181sh.html

 现总结几个方法如下：

1.单点击取消按钮的时候会调用一下的方法

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{

    NSLog(@"点击了取消按钮");

2.点击确定的时候回调用以下方法

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

3.也是最苦人的一点，因为以为是系统的控制器无法调用，所以想不到方法去修改，其实以下的方法中可以使用

- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated

  然后我把具体的方法实现发表如下吧：

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{

    NSLog(@"点击了取消按钮");

    [picker dismissViewControllerAnimated:YEScompletion:nil];

}

- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated

{

    

    [[UIApplicationsharedApplication]setStatusBarHidden:NO];

    

    [[UIApplicationsharedApplication]setStatusBarStyle:UIStatusBarStyleDefault];

    

    UIView *custom = [[UIViewalloc]initWithFrame:CGRectMake(0,0,0,0)];

    

    UIBarButtonItem *btn = [[UIBarButtonItemalloc]initWithCustomView:custom];

    [viewController.navigationItem setRightBarButtonItem:btn animated:NO];

    

    

}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

{

    {

        UIImage *originImage = [infovalueForKey:UIImagePickerControllerEditedImage];

        

        CGSize cropSize;

        cropSize.width = 180;

        cropSize.height = cropSize.width * originImage.size.height / originImage.size.width;

        

        NSDate *date = [NSDatedate];

        NSDateFormatter *formatter = [[NSDateFormatteralloc]init];

        [formatter setDateFormat:@"yyyyMMddHHmmss"];

        

        originImage = [originImage imageByScalingToSize:cropSize];

        

        NSData *imageData = UIImageJPEGRepresentation(originImage, 0.9f);

        

        NSString *uniqueName = [NSStringstringWithFormat:@"%@.jpg",[formatterstringFromDate:date]];

        NSString *uniquePath = [kDocumentsPathstringByAppendingPathComponent:uniqueName];

        

        NSLog(@"uniquePath: %@",uniquePath);

        

        [imageData writeToFile:uniquePath atomically:NO];

        

        NSLog(@"Upload Image Size: %u KB",[imageData length] /1024);

      

        [picker dismissViewControllerAnimated:YEScompletion:^{

            

           [self.delegaterefleshWithfaceData:originImage];

            NSLog(@"originImage==================%@",originImage);

          

        }];

    }

}