【报Bug】微信小程序真机运行，.drawImage画布绘制的图片没有

分类：uni-app

详细问题描述

在微信小程序模拟器上能正常显示绘制的图片，在手机上绘制的图片就没有了

[内容]

<template>  
    <view class="content">  
        <canvas style="width: 300px; height: 200px;" canvas-id="firstCanvas"></canvas>  
    </view>  
</template>  

<script>  
    export default {  
    onReady: function (e) {  
        var context = uni.createCanvasContext('firstCanvas')  

        context.drawImage("http://img3.imgtn.bdimg.com/it/u=4266545871,335204506&fm=15&gp=0.jpg", 0, 0)  
        context.draw()  

    },  
    methods: {  
        canvasIdErrorCallback: function (e) {  
            console.error(e.detail.errMsg)  
        }  
    }  
}  
</script>  

<style>  
    .content {  
        text-align: center;  
        height: 400upx;  
    }  

    .logo {  
        height: 200upx;  
        width: 200upx;  
        margin-top: 200upx;  
    }  

    .title {  
        font-size: 36upx;  
        color: #8f8f94;  
    }  
</style>