Ios 从图像选择器返回时如何更改视图控制器？

我正在尝试做一些简单的事情：

从控制器MAViewControllerMenu中，我可以选择现有图片

选择后，我通过取消选取器视图返回MaviewController菜单

返回MAViewControllerMenu后，我想切换到另一个控制器MAViewControllerPictureDisplay，在这里我可以看到在imageView中选择的图像

但是，它不会带我进入下一个视图

以下是MAViewControllerMenu中的代码

MAViewControllerPictureDisplay* imageControllerView;
- (void)viewDidLoad
{

    [super viewDidLoad];
    // Do any additional setup after loading the view.
    //load next page
    imageControllerView = [[self storyboard]     instantiateViewControllerWithIdentifier:@"chosenImageController"];
}



-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    image = [info objectForKey:UIImagePickerControllerOriginalImage];//Take image from picker
    imageControllerView.image = image;//set it for the next controller's property
    [self dismissViewControllerAnimated:YES completion:^{
    [self.presentingViewController presentModalViewController:imageControllerView
                                                     animated:YES];
}];
    //NEXT LINE DOESNT WORK
    [self presentViewController:imageControllerView animated:YES completion:nil];//THAT DOESNT WORK
}

但是，我在我的第一个控制器中设置了一个按钮，单击该按钮后，它会通过下面的函数运行上面的那一行，并且该按钮会将我带到下一个控制器：

- (IBAction)movetonext{
    [self presentViewController:imageControllerView animated:YES completion:nil];
}

我遗漏了什么？为什么它在点击按钮时起作用，而在选择图片后在没有触摸事件的情况下起作用

谢谢

试试这个：

而不是弹出UIVIewController，然后显示。按下两个视图控制器，然后弹出一个

当您呼叫选择器时：

  [self presentViewController:imageControllerView animated:NO completion:nil];
  [self presentViewController:PickerController animated:YES completion:nil];

当你解雇时：

   [Picker dismissViewControllerAnimated:YES completion:NULL];

请注意，当我调用两个UIViewController进行演示时，其中一个（尚未演示的那个）的动画设置为“否”

希望这有帮助

编辑

以上代码仅适用于UINavigationController，通过“PushViewController”和“PopViewController”

我发现实现这一点的唯一两种方法是：

1-如果您使用NSNotificationCenter取消middel视图，如下所示：

不幸的是，对您来说，情况不一样，所以我会考虑使用UINaviationController 对你来说，就是为UIImagePicker使用一个子视图，它会抛弃他的自我

2-知道这是一种黑客，但它的工作！如果在没有动画的情况下调用middel UIViewController，并从该视图调用图像选择器，则它将工作。您必须将拾取的图像委派回。 我在我的代码中添加了middel UIViewController，使其首次将Alpha设置为0，这样您就不会注意到，他是韩元的演示方式：

//First UIViewController:

@implementation ViewControllerOne
- (IBAction)buttonPressed:(id)sender {

    ViewControllerTwo *viewTwo = [[ViewControllerTwo alloc]init];
    [self presentViewController:viewTwo animated:NO completion:nil];
}

//Secound UIViewController:
      @interface ViewControllerTwo ()
       @property (nonatomic) UIImagePickerController *myPicker;
       @end
       @implementation ViewControllerTwo

       -(void)viewWillAppear:(BOOL)animated
       {
       //View to alph 0 if this is the first time it displayis:
       if (!self.myPicker) {
         [self.view setAlpha:0];
      }else{
        [self.view setAlpha:1];
       }
      }
      -(void)viewDidAppear:(BOOL)animated{

      if (!self.myPicker) {
        self.myPicker = [[UIImagePickerController alloc]init];
        self.myPicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
        self.myPicker.delegate = self;
        [self presentViewController:self.myPicker animated:YES completion:nil];
      }
      }  
       - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:    (NSDictionary *)info
      {
    [self.myPicker dismissViewControllerAnimated:YES completion:nil];
      }
      - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
      {
    [self.myPicker dismissViewControllerAnimated:YES completion:NO];
      }
      - (IBAction)ButtonTwoClicked:(id)sender {
       [self dismissViewControllerAnimated:YES completion:NO];
     }

试试这个：

而不是弹出UIVIewController，然后显示。按下两个视图控制器，然后弹出一个

当您呼叫选择器时：

  [self presentViewController:imageControllerView animated:NO completion:nil];
  [self presentViewController:PickerController animated:YES completion:nil];

当你解雇时：

   [Picker dismissViewControllerAnimated:YES completion:NULL];

请注意，当我调用两个UIViewController进行演示时，其中一个（尚未演示的那个）的动画设置为“否”

希望这有帮助

编辑

以上代码仅适用于UINavigationController，通过“PushViewController”和“PopViewController”

我发现实现这一点的唯一两种方法是：

1-如果您使用NSNotificationCenter取消middel视图，如下所示：

不幸的是，对您来说，情况不一样，所以我会考虑使用UINaviationController 对你来说，就是为UIImagePicker使用一个子视图，它会抛弃他的自我

2-知道这是一种黑客，但它的工作！如果在没有动画的情况下调用middel UIViewController，并从该视图调用图像选择器，则它将工作。您必须将拾取的图像委派回。 我在我的代码中添加了middel UIViewController，使其首次将Alpha设置为0，这样您就不会注意到，他是韩元的演示方式：

//First UIViewController:

@implementation ViewControllerOne
- (IBAction)buttonPressed:(id)sender {

    ViewControllerTwo *viewTwo = [[ViewControllerTwo alloc]init];
    [self presentViewController:viewTwo animated:NO completion:nil];
}

//Secound UIViewController:
      @interface ViewControllerTwo ()
       @property (nonatomic) UIImagePickerController *myPicker;
       @end
       @implementation ViewControllerTwo

       -(void)viewWillAppear:(BOOL)animated
       {
       //View to alph 0 if this is the first time it displayis:
       if (!self.myPicker) {
         [self.view setAlpha:0];
      }else{
        [self.view setAlpha:1];
       }
      }
      -(void)viewDidAppear:(BOOL)animated{

      if (!self.myPicker) {
        self.myPicker = [[UIImagePickerController alloc]init];
        self.myPicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
        self.myPicker.delegate = self;
        [self presentViewController:self.myPicker animated:YES completion:nil];
      }
      }  
       - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:    (NSDictionary *)info
      {
    [self.myPicker dismissViewControllerAnimated:YES completion:nil];
      }
      - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
      {
    [self.myPicker dismissViewControllerAnimated:YES completion:NO];
      }
      - (IBAction)ButtonTwoClicked:(id)sender {
       [self dismissViewControllerAnimated:YES completion:NO];
     }

试试这个：

而不是弹出UIVIewController，然后显示。按下两个视图控制器，然后弹出一个

当您呼叫选择器时：

  [self presentViewController:imageControllerView animated:NO completion:nil];
  [self presentViewController:PickerController animated:YES completion:nil];

当你解雇时：

   [Picker dismissViewControllerAnimated:YES completion:NULL];

请注意，当我调用两个UIViewController进行演示时，其中一个（尚未演示的那个）的动画设置为“否”

希望这有帮助

编辑

以上代码仅适用于UINavigationController，通过“PushViewController”和“PopViewController”

我发现实现这一点的唯一两种方法是：

1-如果您使用NSNotificationCenter取消middel视图，如下所示：

不幸的是，对您来说，情况不一样，所以我会考虑使用UINaviationController 对你来说，就是为UIImagePicker使用一个子视图，它会抛弃他的自我

2-知道这是一种黑客，但它的工作！如果在没有动画的情况下调用middel UIViewController，并从该视图调用图像选择器，则它将工作。您必须将拾取的图像委派回。 我在我的代码中添加了middel UIViewController，使其首次将Alpha设置为0，这样您就不会注意到，他是韩元的演示方式：

//First UIViewController:

@implementation ViewControllerOne
- (IBAction)buttonPressed:(id)sender {

    ViewControllerTwo *viewTwo = [[ViewControllerTwo alloc]init];
    [self presentViewController:viewTwo animated:NO completion:nil];
}

//Secound UIViewController:
      @interface ViewControllerTwo ()
       @property (nonatomic) UIImagePickerController *myPicker;
       @end
       @implementation ViewControllerTwo

       -(void)viewWillAppear:(BOOL)animated
       {
       //View to alph 0 if this is the first time it displayis:
       if (!self.myPicker) {
         [self.view setAlpha:0];
      }else{
        [self.view setAlpha:1];
       }
      }
      -(void)viewDidAppear:(BOOL)animated{

      if (!self.myPicker) {
        self.myPicker = [[UIImagePickerController alloc]init];
        self.myPicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
        self.myPicker.delegate = self;
        [self presentViewController:self.myPicker animated:YES completion:nil];
      }
      }  
       - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:    (NSDictionary *)info
      {
    [self.myPicker dismissViewControllerAnimated:YES completion:nil];
      }
      - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
      {
    [self.myPicker dismissViewControllerAnimated:YES completion:NO];
      }
      - (IBAction)ButtonTwoClicked:(id)sender {
       [self dismissViewControllerAnimated:YES completion:NO];
     }

试试这个：

而不是弹出UIVIewController，然后显示。按下两个视图控制器，然后弹出一个

当您呼叫选择器时：

  [self presentViewController:imageControllerView animated:NO completion:nil];
  [self presentViewController:PickerController animated:YES completion:nil];

当你解雇时：

   [Picker dismissViewControllerAnimated:YES completion:NULL];

请注意，当我调用两个UIViewController进行演示时，其中一个（尚未演示的那个）的动画设置为“否”

希望这有帮助

编辑

以上代码仅适用于UINavigationController，通过“PushViewController”和“PopViewController”

我发现实现这一点的唯一两种方法是：

1-如果您使用NSNotificationCenter取消middel视图，如下所示：

不幸的是，对您来说，情况不一样，所以我会考虑使用UINaviationController 对你来说，就是为UIImagePicker使用一个子视图，它会抛弃他的自我

2-知道这是一种黑客，但它的工作！如果在没有动画的情况下调用middel UIViewController，并从该视图调用图像选择器，则它将工作。您必须将拾取的图像委派回。 我在我的代码中添加了middel UIViewController，使其首次将Alpha设置为0，这样您就不会注意到，他是韩元的演示方式：

//First UIViewController:

@implementation ViewControllerOne
- (IBAction)buttonPressed:(id)sender {

    ViewControllerTwo *viewTwo = [[ViewControllerTwo alloc]init];
    [self presentViewController:viewTwo animated:NO completion:nil];
}

//Secound UIViewController:
      @interface ViewControllerTwo ()
       @property (nonatomic) UIImagePickerController *myPicker;
       @end
       @implementation ViewControllerTwo

       -(void)viewWillAppear:(BOOL)animated
       {
       //View to alph 0 if this is the first time it displayis:
       if (!self.myPicker) {
         [self.view setAlpha:0];
      }else{
        [self.view setAlpha:1];
       }
      }
      -(void)viewDidAppear:(BOOL)animated{

      if (!self.myPicker) {
        self.myPicker = [[UIImagePickerController alloc]init];
        self.myPicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
        self.myPicker.delegate = self;
        [self presentViewController:self.myPicker animated:YES completion:nil];
      }
      }  
       - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:    (NSDictionary *)info
      {
    [self.myPicker dismissViewControllerAnimated:YES completion:nil];
      }
      - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
      {
    [self.myPicker dismissViewControllerAnimated:YES completion:NO];
      }
      - (IBAction)ButtonTwoClicked:(id)sender {
       [self dismissViewControllerAnimated:YES completion:NO];
     }

---

使用

完成

处理程序：

-(void)imagePickerController:(UIImagePickerController *)picker 
                                  didFinishPickingMediaWithInfo:(NSDictionary *)info { 
 [self dismissViewControllerAnimated:YES completion:^{
    image = [info valueForKey:UIImagePickerControllerOriginalImage];
    imageControllerView.image = image;
    [self presentViewController:imageControllerView animated:YES completion:nil];
 }];
}

---

演示

---

使用

完成处理程序：

-(void)imagePickerController:(UIImagePickerController *)picker 
                                  didFinishPickingMediaWithInfo:(NSDictionary *)info { 
 [self dismissViewControllerAnimated:YES completion:^{
    image = [info valueForKey:UIImagePickerControllerOriginalImage];
    imageControllerView.image = image;
    [self presentViewController:imageControllerView animated:YES completion:nil];
 }];
}


演示