CGAffineTransformMakeScale並插入子視圖

Question

在我將CGAffineTransformMakeScale(scale,scale)（例如scale = 3.0）應用於視圖之後 - 它可以縮放。但是當我試圖以縮放後以編程方式插入一些子視圖時 - 子視圖也縮放3倍 - 我不希望它被縮放。我做錯了什麼？

Answer 1

- (void)viewDidLoad { 
    [UIView beginAnimations:nil context:NULL]; 
     [UIView setAnimationDuration:1.5]; 
     // other animations goes here 
     //imageView is a global variable of UIImageView with frame   
      //CGrectMake(0,0,160,240); 
      imageView.transform =CGAffineTransformMakeScale(2.0,2.0);//CGAffineTransformMakeRotation(M_PI*0.5); 
     // other animations goes here 
     [UIView commitAnimations]; 
     [super viewDidLoad]; 
     NSLog(@"THe imageView rect is %@",NSStringFromCGRect(imageView.frame)); 
     [self performSelector:@selector(addImage) withObject:nil afterDelay:1.5]; 


} 

//根據需要添加子視圖。

> -(void)addImage { 
>  
> 
> CGRect rect=imageView.frame; 
>  rect.origin.x=0; 
>  rect.origin.y=0; 
>  [imageView setFrame:rect]; 
>  UIImageView *imageViewTwo=[[UIImageView alloc] initWithImage: 
> [UIImage=imageNamed:@"photo-4.PNG"]]; 
>  [imageViewTwo setFrame:CGRectMake(0, 0, 160, 
> 240)];//it will be scaled two //times 
> as its superview 
>  [imageView addSubview:imageViewTwo]; 
>  NSLog(@"the frame of the subv iew is 
> %@",NSStringFromCGRect(imageViewTwo.frame)); 
>  [imageViewTwo release]; 
>  } 

//分辨率：子視圖也將縮小，不亞於上海華盈，因此，可能的解決辦法是重新調整子視圖到原來的大小。例如 如果您已將超級視圖縮放爲2.0,2.0，則根據需要添加具有原始幀的子視圖，然後應用CGAffineTransformMakeScale（0.5,0.5）;我認爲它會解決您的問題。 enter code here //此外，我們應用變換後，原點也會發生變化。我們可以在轉換後將它重置爲（0,0）。