【HarmonyOS NEXT】鸿蒙arrayBuffer和Uint8Array互相转化 前言 ArrayBuffer ArrayBuffer内部包含一块Native内存,该ArrayBuffer的JS对象壳被分配在虚拟机本地堆(LocalHeap)。与普通对象一样,需要经过序列化与反序列化拷贝传递,但是Native内存有两种传输方式:拷贝和转移。 Uint8Array Uint8Array是一种基本的JavaScript数组类型,...
这个在ArkTS中是不允许的。要把Uint8Array转成ArrayBuffer，只要let buffer = uint8Array.buffer就行。
let arrayBuffer: ArrayBuffer = new ArrayBuffer(8); let uint8Array: Uint8Array = new Uint8Arr...
* ArrayBuffer 转 String * @param input * @returns */ arrayBuffer2String(input: ArrayBuffer) { return this.uint8Array2String(new Uint8Array(input)) } } export default new StringUtils() 示例代码: let globalPlainText = "" globalPlainText += "一二三四五六七八九十" globalPlainText += "SDK向...
nodeper2楼•4 个月前
readFile() {letstat = fs.statSync(this.fileDir);letarraybuf:ArrayBuffer=newArrayBuffer(stat.size)letfile = fs.openSync(this.fileDir, fs.OpenMode.READ_WRITE) fs.readSync(file.fd, arraybuf)letuint8Array:Uint8Array=newUint8Array(arraybuf);letplainText: cryptoFramework.DataBlob = { data: ui...
筛选支持能力集包含的API并提供API联想" let dealStr = StringUtils.string2Uint8Array1(globalPlainText) let base64Str = base64.encode(dealStr) LogUtils.i("base64 = " + base64Str); // let arr1: ArrayBuffer = base64.decode(base64Str) LogUtils.i("result1 = " + StringUtils.arrayBuffer2...
LogUtils.i("result1 = "+ StringUtils.arrayBuffer2String(arr1));复制 运行结果: TextEncoder源码(部分API在since 9 已废弃): /** * The TextDecoder interface represents a text decoder. * The decoder takes the byte stream as the input and outputs the String string. ...
5) buffer.from(arrayBuffer).fill(1) console.log("testBuffer =" + new Uint8Array(arrayBuffer))...
collections.Uint8Array是一个sendable class。建议