touchmoved動態使用<code>NSMutableArray</code></p> <p>的代碼，這是從NSMutable陣列

Question

我正在開發中，我創建了一個UIImageView項目顯示的UIImageViews後不工作：

for (int i = 0; i < index ; i++) { 
    image_name= [NSString stringWithFormat:@"%@%dpng.png",[string_values objectAtIndex:0],i+1]; 

    UIImageView *tempImageView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:image_name]]; 

    tempImageView.userInteractionEnabled = YES; 
    CGSize size2=tempImageView.image.size; 
    int width2=size2.width/2; 
    int height2 =size2.height/2; 
    tempImageView.frame = CGRectMake(xvalue,yvalue,width2,height2); 

    [myArray addObject:tempImageView]; 
} 

之後，我加入子視圖用這個代碼在屏幕上顯示它：

for(int i=0;i<[myArray count];i++) { 
    [self.view addSubview:[myArray objectAtIndex:i]]; 
} 

以上所有代碼根據需要運行良好。現在的方法的touchesBegan，我在做這樣的代碼：它打印的touchesBegan方法的第一行

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { 
    printf("the touch is fired"); 
    for(int i=0;i<[myArray count];i++) { 
     [self.view addSubview:[myArray objectAtIndex:i]]; 
     touchStart = [[touches anyObject] locationInView:[myArray objectAtIndex:i]]; 
    } 
} 

應用崩潰時touchesBegan方法被調用，之後。

我在這裏遇到困難，也經歷了許多問題/答案，但找不到工作解決方案。任何幫助將不勝感激。感謝好回覆

Answer 1

爲了使您的imageviews拖動，

1）全部刪除 - （無效）剛剛創建的UIImageView * tempImageView（環路）

後觸及方法

2）添加這兩條線

UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handleDrag:)]; 
[tempImageView addGestureRecognizer:panRecognizer]; 

3）然後，在你看來Controller.m或者文件的某處添加此方法

-(void) handleDrag:(UIPanGestureRecognizer *) panGesture{ 
CGPoint transition = [panGesture translationInView:self.view]; 
panGesture.view.center = CGPointMake(panGesture.view.center.x + transition.x, panGesture.view.center.y +transition.y); 
[panGesture setTranslation:CGPointMake(0,0) inView:self.view];}