uni.base64ToArrayBuffer(base64)

将 Base64 字符串转成 ArrayBuffer 对象

base64ToArrayBuffer 兼容性

Web	微信小程序	Android	iOS	HarmonyOS	HarmonyOS(Vapor)
4.0	4.41	4.51	4.61	4.61	5.0

参数

名称	类型	必填	默认值	兼容性	描述
base64	string	是	-	- Web 微信小程序 Android iOS HarmonyOS - - - - -

返回值

类型
ArrayBuffer

参见

• 相关 Bug
• 参见uni-app相关文档
• 微信小程序文档
• 支付宝小程序文档
• 百度小程序文档
• 抖音小程序文档
• 飞书小程序文档
• 钉钉小程序文档
• QQ小程序文档
• 快手小程序文档
• 京东小程序文档
• 华为快应用文档
• 360小程序文档

uni.arrayBufferToBase64(arrayBuffer)

将 ArrayBuffer 对象转成 Base64 字符串

arrayBufferToBase64 兼容性

Web	微信小程序	Android	iOS	HarmonyOS	HarmonyOS(Vapor)
4.0	4.41	4.51	4.61	4.61	5.0

参数

名称	类型	必填	默认值	兼容性	描述
arrayBuffer	ArrayBuffer	是	-	- Web 微信小程序 Android iOS HarmonyOS - - - - -

返回值

类型
string

参见

• 相关 Bug
• 参见uni-app相关文档
• 微信小程序文档
• 支付宝小程序文档
• 百度小程序文档
• 抖音小程序文档
• 飞书小程序文档
• 钉钉小程序文档
• QQ小程序文档
• 快手小程序文档
• 京东小程序文档
• 华为快应用文档
• 360小程序文档

示例

示例为hello uni-app x alpha分支，与最新HBuilderX Alpha版同步。与最新正式版同步的master分支示例另见

扫码体验（手机浏览器跳转到App直达页）

扫码体验

示例

<template>
	<view>
		<view>
			<button class="btnstyle" type="primary" @tap="arrayBufferToBase64"> arrayBufferToBase64 </button>
			<button class="btnstyle" type="primary" @tap="base64ToArrayBuffer"> base64ToArrayBuffer </button>
		</view>
	</view>
</template>

<script setup lang="uts">
	type DataType = {
		arrayBufferToBase64Res: string;
		base64ToArrayBufferRes: string;
	}

	const data = reactive({
		arrayBufferToBase64Res: '',
		base64ToArrayBufferRes: ''
	} as DataType)

	const arrayBufferToBase64 = () => {
		const arraybuffer = new ArrayBuffer(3)
		const uint8 = new Uint8Array(arraybuffer)
		uint8.set([11, 22, 33])
		const base64 = uni.arrayBufferToBase64(arraybuffer)
		console.log(base64) //CxYh
		data.arrayBufferToBase64Res = base64
		uni.showToast({
			title: data.arrayBufferToBase64Res
		})
	}

	const base64ToArrayBuffer = () => {
		const base64 = 'CxYh'
		const arrayBuffer = uni.base64ToArrayBuffer(base64)
		const uint8 = new Uint8Array(arrayBuffer)
		console.log(uint8.toString())//11, 22, 33
		data.base64ToArrayBufferRes = uint8.toString()
		uni.showToast({
			title: data.base64ToArrayBufferRes
		})
	}

	defineExpose({
		data,
		arrayBufferToBase64,
		base64ToArrayBuffer
	})
</script>

<style>
	.logo {
		height: 100px;
		width: 100px;
		margin: 100px auto 25px auto;
	}

	.title {
		font-size: 18px;
		color: #8f8f94;
		text-align: center;
	}

  .btnstyle {
  	margin: 4px;
  }
</style>

示例源码如下，请查看 pre > code 标签中的内容

<template>
	<view>
		<view>
			<button class="btnstyle" type="primary" @tap="arrayBufferToBase64"> arrayBufferToBase64 </button>
			<button class="btnstyle" type="primary" @tap="base64ToArrayBuffer"> base64ToArrayBuffer </button>
		</view>
	</view>
</template>

<script setup lang="uts">
	type DataType = {
		arrayBufferToBase64Res: string;
		base64ToArrayBufferRes: string;
	}

	const data = reactive({
		arrayBufferToBase64Res: '',
		base64ToArrayBufferRes: ''
	} as DataType)

	const arrayBufferToBase64 = () => {
		const arraybuffer = new ArrayBuffer(3)
		const uint8 = new Uint8Array(arraybuffer)
		uint8.set([11, 22, 33])
		const base64 = uni.arrayBufferToBase64(arraybuffer)
		console.log(base64) //CxYh
		data.arrayBufferToBase64Res = base64
		uni.showToast({
			title: data.arrayBufferToBase64Res
		})
	}

	const base64ToArrayBuffer = () => {
		const base64 = 'CxYh'
		const arrayBuffer = uni.base64ToArrayBuffer(base64)
		const uint8 = new Uint8Array(arrayBuffer)
		console.log(uint8.toString())//11, 22, 33
		data.base64ToArrayBufferRes = uint8.toString()
		uni.showToast({
			title: data.base64ToArrayBufferRes
		})
	}

	defineExpose({
		data,
		arrayBufferToBase64,
		base64ToArrayBuffer
	})
</script>

<style>
	.logo {
		height: 100px;
		width: 100px;
		margin: 100px auto 25px auto;
	}

	.title {
		font-size: 18px;
		color: #8f8f94;
		text-align: center;
	}

  .btnstyle {
  	margin: 4px;
  }
</style>

通用类型

GeneralCallbackResult

名称	类型	必备	默认值	兼容性	描述
errMsg	string	是	-	Web 微信小程序 Android iOS HarmonyOS - 4.41 - - -	错误信息