在不同的UIImageView中顯示照片

Question

在我的測試應用程序中，我有兩個按鈕（takePhoto1和takePhoto2）和兩個UIImageView（photo1View和photo2View）。第一個按鈕拍攝一張照片並將其顯示在第一張圖像視圖中。第二個按鈕拍攝另一張照片，應該顯示在第二個圖像視圖中。但是，由於某種原因，第二張照片將顯示在photoView1而不是photoView2中。

我還沒有實現任何代碼來保存照片，所以我並不擔心圖片視圖中持續存在的照片。

我需要弄清楚的是如何確定何時拍攝第二張照片，它會顯示在相應的視圖中。這是我到目前爲止：

//Take photo1 and display in top image view 
- (void)takePhoto1; 
{ 
    [self dismissViewControllerAnimated:YES completion:NULL]; 

    if ([self.capturedImages count] > 0) 
    { 
     if ([self.capturedImages count] == 1) 
     { 
      // Camera took a single picture. 
      [self.photo1View setImage:[self.capturedImages objectAtIndex:0]]; 
     } 
     // To be ready to start again, clear the captured images array. 
     [self.capturedImages removeAllObjects]; 
    } 

    self.imagePickerController = nil; 
} 




//Take photo2 and display in bottom image view 
- (void)takePhoto2; 
{ 
    [self dismissViewControllerAnimated:YES completion:NULL]; 

    if ([self.capturedImages count] > 0) 
    { 
     if ([self.capturedImages count] == 1) 
     { 
      // Camera took a single picture. 
      [self.photo2View setImage:[self.capturedImages objectAtIndex:1]]; 
     } 
     // To be ready to start again, clear the captured images array. 
     [self.capturedImages removeAllObjects]; 
    } 

    self.imagePickerController = nil; 
} 

任何人都知道如何解決這個問題？

Answer 1

我看到你的問題，無法幫助我的自我在我的方式解決它。如果我有像你我這樣已經解決了這同樣的問題：

考慮，按鈕的標籤是一樣的，ImageView的標籤。

#import "ViewController.h" 

@interface ViewController() 
- (IBAction)takePhoto:(id)sender; 

@property (strong, nonatomic) IBOutletCollection(UIImageView) NSArray *imageViews; 

@property int tag; 
@end 

@implementation ViewController 

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view, typically from a nib. 
} 

- (void)didReceiveMemoryWarning 
{ 
    [super didReceiveMemoryWarning]; 
    // Dispose of any resources that can be recreated. 
} 

- (IBAction)takePhoto:(id)sender { 
    _tag = ((UIButton *)sender).tag; 
    UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init]; 
    imagePickerController.delegate = self; 
    [self presentViewController:imagePickerController animated:YES completion:nil]; 


} 

#pragma mark - UIImagePickerDelegate Methods 
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo{ 
    [picker dismissViewControllerAnimated:NO completion:nil]; 

    [[self getImageView:_tag] setImage:image]; 

} 

- (UIImageView *) getImageView : (int) tag{ 
    for (UIImageView *imageView in _imageViews) { 
     if (imageView.tag == tag) { 
      return imageView; 
     } 
    } 
    return nil; 
} 


@end 

在這裏，您可以check this as working project here。

Answer 2

檢查你的故事板或XIB，看看是否「photo2View」實在是連接到電源插座。

我懷疑「photo1View」的UIImageView也連接到「photo2View」。

p.s.你也應該改變這條線在你的@implementation：

- (void)takePhoto2; 

這樣：

- (void)takePhoto2 

分號應只來在你的.h文件中的方法聲明之後。

Answer 3

你的代碼是否工作？我發現兩個問題 -

問題1 - 這應該崩潰，因爲capturedImages有一個元素根據第二個if檢查，但您在設置imageView時訪問數組中的第二個元素。

if ([self.capturedImages count] == 1) 
     { 
      // Camera took a single picture. 
      [self.photo2View setImage:[self.capturedImages objectAtIndex:1]]; 

問題2 - 既然你正在清理self.capturedImages，這應該扔了你可以例外第二種方法。

[self.photo2View setImage:[self.capturedImages objectAtIndex:1]]; 

Answer 4

您是否正確連接按鈕1以拍攝照片1和按鈕2拍攝照片2？也許按鈕2也在做takePhoto1？