我有这个:
let alphaPtr = UnsafeMutablePointer<vImagePixelCount>(mutating: alpha) as UnsafeMutablePointer<vImagePixelCount>?
现在我收到警告:
Initialization of 'UnsafeMutablePointer' (aka 'UnsafeMutablePointer') results in a dangling pointer
详细警告包括:
Implicit argument conversion from '[vImagePixelCount]' (aka 'Array') to 'UnsafePointer' (aka 'UnsafePointer') produces a pointer valid only for the duration of the call to 'init(mutating:)'
Use the 'withUnsafeBufferPointer' method on Array in order to explicitly convert argument to buffer pointer valid for a defined scope
有没有解决的办法？
最佳答案
尝试这个
var bytes = [UInt8]()
let uint8Pointer = UnsafeMutablePointer<UInt8>.allocate(capacity: bytes.count)
uint8Pointer.initialize(from: &bytes, count: bytes.count)
关于ios - Swift 5 的 UnsafeMutablePointer 警告，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/60869370/