uni-app微信小程序獲取用戶頭像并保存

methods中使用方法
獲取微信用戶名稱
onKeyInput: function(event) {
this.nickname = event.target.value
},獲取頭像并且轉換成Base64
onChooseAvatar(e) {
let imgBase64 = wx.getFileSystemManager().readFileSync(e.detail.avatarUrl, 'base64');
let background = 'data:image/png;base64,' + imgBase64;
this.avatarUrl = background
},
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