Ios 不可配置指针初始化 1。let context=CGContext（…） 2.context.draw（…） 3.let buffer=UnsafeMutablePointer（context.data）//此处出错

使用Swift 3，第3行生成一个错误，该错误表示：

1. let context = CGContext(...)
2. context.draw(...)
3. let buffer = UnsafeMutablePointer<UInt32>(context.data) // error here  

无法使用类型为“（UnsafeMutableRawPointer？）的参数列表调用类型为“UnsafeMutablePointer”的初始值设定项

是否有方法将

UnsafeMutableRawPointer

转换为

UnsafeMutablePointer

在初始化时接受为参数的任何适当类型

---

顺便说一下，可以找到

UnsafeMutablePointer

的类引用。

我想这将完成初始化

Cannot invoke initializer for type 'UnsafeMutablePointer<UInt32>' with an argument list of type '(UnsafeMutableRawPointer?)'

让ptr=context.data
让data=ptr！。AssumingMemoryBind（到：unsafemeutablepointer.self）.pointee
设pixelBuffer=UnsafemeutablePointer（数据）

    let ptr = context.data
    let data = ptr!.assumingMemoryBound(to: UnsafeMutablePointer<UInt32>.self).pointee
    let pixelBuffer = UnsafeMutablePointer<UInt32>(data)