+(BOOL)isCameraDeviceAvailable
{
BOOL isCameraAvailable=NO;
if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
if([UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceFront] || [UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceRear])
isCameraAvailable = YES;
}
return isCameraAvailable;
}
但我无法正确声明它并收到错误
Instance method '-isCameraDeviceAvailable' not found (return type defaults to 'id')
当我声明如下。
+ (BOOL)isCameraDeviceAvailable;
然后以这种方式使用它
if([self isCameraDeviceAvailable]){
}
我想我需要在不同的地方或以不同的方式声明它。你能告诉我怎么做吗?