How to solve CALayerInvalidGeometry', reason: 'CALayer position contains NaN: [nan nan]?

Question

I have an error where it crash the application when it is starting up. This is the error that i got: ``` *** Terminating app due to uncaught exception 'CALayerInvalidGeometry', reason: 'CALayer position contains NaN: [nan nan]' *** First throw call stack: (0x250b022 0x2709cd6 0x24b3a48 0x24b39b9 0x217ec0d 0x2174f55 0x158f3f7 0xbc74e 0xbe512 0xbfa26 0xbe4ad 0x224ffda 0x224f956 0x224e449 0x224ab9a 0x24df970 0x247f1c1 0x2442967 0x2441d84 0x2441c9b 0x2c0a7d8 0x2c0a88a 0x1559626 0x2aed 0x2a65) terminate called throwing an exception ``` i tried using Exception breakpoint and it doesn't show which part of the code has gone wrong.It only stop at this point -0xbc74e: movl $0, %eax- How can i solve it? Please help. *edit I found the part which throws the exception but i can't see what is wrong ``` - (void)viewDidLoad { [super viewDidLoad]; [self.activityView startAnimating]; self.mapView.layerDelegate = self; self.mapView.touchDelegate = self; self.mapView.calloutDelegate = self; NSURL *mapUrl…

Accepted Answer

I think this error occurs because the layer which is executed has frame in this form:

Layer frame == {{inf, inf}, {0, 0}}

Here inf is infimum. Its set of numbers.

So the solution to avoid this kind of issue just create condition before return of layer. Like as:

```
if (layer.frame.size.width ==0 || layer.frame.size.height ==0 ) {
    return [self simpleLayer];
}else{
    return layer;        
} 
```

Where simple layer is like as :

```
-(CALayer *)simpleLayer{
    CALayer *layer = [[CALayer alloc] init];
    [layer setFrame:CGRectMake(0, 0, 10, 10)];
    [layer setHidden:TRUE];
    return layer;
}
```

This condition solved my issue. Try it.

How to solve CALayerInvalidGeometry', reason: 'CALayer position contains NaN: [nan nan]?

Solution

Problem