添加UISwipeGestureRecognizer到的UIImageView通過陣列

Question

做出

代碼：

頭文件

@interface game : UIViewController 
{ 

    UIImageView *anh[8][8]; 

} 

-(void)SwipeToMove:(id)sender; 

@end 

實現文件：

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 

    UISwipeGestureRecognizer *move = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(SwipeToMove:)]; 
    [move setDirection:(UISwipeGestureRecognizerDirectionUp)]; 

    for (int i = 0; i < 8; i++) { 
     for (int j = 0; j < 8; j++) { 

      anh[i][j]=[[UIImageView alloc] initWithFrame:CGRectMake(0+40*i,200 + 40*j,40,40)]; 

      anh[i][j].userInteractionEnabled = YES; 

      [self.view addSubview:anh[i][j]]; 

      anh[i][j].image = [UIImage imageNamed:@"Earth.png"]; 

      [anh[i][j] addGestureRecognizer:move]; 

     } 
    } 

} 

-(void)SwipeToMove:(id)sender{ 

    NSLog(@"ok"); 
} 

的UIImageView按預期工作，但UISwipeGestureRecognizer不工作。於是，我嘗試這樣做：

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 

    UIImageView *image1 = [[UIImageView alloc]initWithFrame:CGRectMake(100,50,40,40)]; 
    label1.image = [UIImage imageNamed:@"Ceres.png"]; 
    [self.view addSubview:image1]; 
    image1.userInteractionEnabled = YES; 
    image1.image = [UIImage imageNamed:@"Earth.png"]; 

    UISwipeGestureRecognizer *move = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(SwipeToMove:)]; 
    [move setDirection:(UISwipeGestureRecognizerDirectionUp)]; 

    [image1 addGestureRecognizer:move]; 



-(void)SwipeToMove:(id)sender{ 

    NSLog(@"OK"); 

} 

它的工作，但我需要的UIImageView秒的陣列，使我的應用程序。請幫幫我。

Answer 1

您的代碼僅創建一個手勢識別器，但您嘗試將其添加多個圖像視圖。您需要在循環內部創建手勢識別器，以便爲每個圖像視圖創建一個新手勢識別器。

(void)viewDidLoad 
{ 
    [super viewDidLoad]; 

    for (int i = 0; i < 8; i++) { 
     for (int j = 0; j < 8; j++) { 
      UISwipeGestureRecognizer *move = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(SwipeToMove:)]; 
      [move setDirection:(UISwipeGestureRecognizerDirectionUp)]; 
      anh[i][j]=[[UIImageView alloc] initWithFrame:CGRectMake(0+40*i,200 + 40*j,40,40)]; 

      anh[i][j].userInteractionEnabled = YES; 

      [self.view addSubview:anh[i][j]]; 

      anh[i][j].image = [UIImage imageNamed:@"Earth.png"]; 

      [anh[i][j] addGestureRecognizer:move]; 

     } 
    } 

} 

Answer 2

您添加相同手勢識別所有的時間，以不同的圖像，因此將需要剛剛過去的一個我的理解，因爲你剛纔創建一個。在循環內創建一個類似aux的輔助識別器，併爲每個UIImageView提供一個標籤，這樣您就可以訪問該標籤並區分每個圖像中的每一次滑動，而這種情況發生在您的應用中。它應該工作。但基本上：

for (....){ 
    // create aux gesture recognizer and assign it to the UIImageView 
} 

希望它有幫助。