CALayerInvalidGeometry'，reason：'CALayer bounds contains NaN：[0 0;南宁]崩溃的看法 [英] CALayerInvalidGeometry', reason: 'CALayer bounds contains NaN: [0 0; nan nan] crash in view

问题描述

我已经看了很多，但我只能似乎获得webView和表格有关这个问题。 Mine完全不同，似乎有同样的崩溃异常：

I've looked a lot into this, but I can only seem to get webView and tables relating to this issue. Mine's totally different it seems with the same crash exception:

CALayerInvalidGeometry'，原因：'CALayer bounds包含NaN：[0 0; [nan nan]

CALayerInvalidGeometry', reason: 'CALayer bounds contains NaN: [0 0; nan nan]

基本上我在这里是一个视图，淡化和缩放图像。我最近决定在UIView动画中使用CGAffineTransformScale更改我的代码，而不是每次定时器计时缩放。这使用较少的处理能力。

Basically what I have here is a view that fades and scales images. I've recently decided to change my code using CGAffineTransformScale in a UIView animation instead of scaling things up a notch every time a timer ticks. This uses way less processing power.

但无论我有什么顺序的图片，它总是崩溃后的第19个。它似乎并不是一个问题的定位坐标数组，它指的是，因为它只有6的长度，并达到其长度后循环。所以，由于某些原因，现在，因为我实现了这个动画代码，它给我的崩溃。任何人知道为什么？

But no matter what order I have the pictures in, it always crashes after the 19th one. It does not seem to be an issue with the positioning coordinate array that it refers to, because it is only 6 in length and loops over after it reaches its length. So for some reason now since I've implemented this animation code it gives me that crash. Anyone know why?

这是我自从崩溃以来更改的部分：

Here's the part I've changed since it started crashing:

-(void) onTimer{

if(scaleTimer_A==5){

    imageView_A.image = [UIImage imageNamed:[attractList_A objectAtIndex:imageIndex_A]];

    imageView_A.frame = CGRectMake(300, 200, 3.86, 3.86);

    imageView_A.center = CGPointMake(attractLocs_x_A[attractLocs_A_index], attractLocs_y_A[attractLocs_A_index]);



    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:2];
    imageView_A.alpha = 1;
    imageView_A.transform = CGAffineTransformScale(imageView_A.transform, 100, 100);
    [UIView commitAnimations]; 
}

if(scaleTimer_A==10){

    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:.75];
    imageView_A.alpha = 0;
    imageView_A.transform = CGAffineTransformScale(imageView_A.transform, 1.2, 1.2);
    [UIView commitAnimations]; 

    scaleTimer_A=0;

    imageIndex_A+=1;

    if(imageIndex_A==imageIndex_A_size){
        imageIndex_A=0;
    }

    attractLocs_A_index+=1;

    if(attractLocs_A_index==attractLocs_A_SIZE){
        NSLog(@"Back to zero A");
        attractLocs_A_index=0;
    }
    NSLog(@"Image A =%@", [attractList_A objectAtIndex:imageIndex_A]);
}

scaleTimer_A+=1;}

EDIT ：

以下是我如何使用CGAffineTransformIdentity获取上面的代码来处理崩溃问题。

Here's how I got the code above to work without the crashing problem using CGAffineTransformIdentity.

-(void) onTimer{

if(scaleTimer_A==5){

    imageView_A.image = [UIImage imageNamed:[attractList_A objectAtIndex:imageIndex_A]];

    imageView_A.transform = CGAffineTransformIdentity;

    imageView_A.center = CGPointMake(attractLocs_x_A[attractLocs_A_index], attractLocs_y_A[attractLocs_A_index]);



    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:2];
    imageView_A.alpha = 1;
    imageView_A.transform = CGAffineTransformScale(CGAffineTransformIdentity, 100, 100);
    [UIView commitAnimations]; 
}

if(scaleTimer_A==10){

    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:.75];
    imageView_A.alpha = 0;
    imageView_A.transform = CGAffineTransformScale(CGAffineTransformIdentity, 120, 120);
    [UIView commitAnimations]; 

    scaleTimer_A=0;

    imageIndex_A+=1;

    if(imageIndex_A==imageIndex_A_size){
        imageIndex_A=0;
    }

    attractLocs_A_index+=1;

    if(attractLocs_A_index==attractLocs_A_SIZE){
        NSLog(@"Back to zero A");
        attractLocs_A_index=0;
    }
    NSLog(@"Image A =%@", [attractList_A objectAtIndex:imageIndex_A]);
}

scaleTimer_A+=1;}

推荐答案

根据堆栈跟踪，问题在这里

According to the stack trace the problem is here

imageView_A.frame = CGRectMake(300, 200, 3.86, 3.86);

尝试将imageView_A.transform设置为identity。另一个解决方案（我想更好）将使用UIScrollView缩放（它也可以制作动画）。

Try to set the imageView_A.transform to identity. Another solution (and I think better) would be using the UIScrollView for scaling (it is also could be made animated).

编辑：试试这个

    imageView_A.image = [UIImage imageNamed:[attractList_A objectAtIndex:imageIndex_A]];

    imageView_A.frame = CGRectMake(300, 200, 3.86, 3.86);

    imageView_A.center = CGPointMake(attractLocs_x_A[attractLocs_A_index], attractLocs_y_A[attractLocs_A_index]);



    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:2];
    imageView_A.alpha = 1;
    imageView_A.frame = CGRectMake(300, 200, 386.0f, 386.0f);
    [UIView commitAnimations]; 

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