require（）必须有一个字符串文字参数React Native

问题描述

我的应用程序中的组件如果被分配了直接字符串值（someImage.png），它可以正常工作，但如果我尝试通过将图像名称存储在局部变量中来分配它，则会给出此异常require（ ）必须有一个字符串文字参数
此行正常

I've component in my application which works fine if it is assigned direct string value("someImage.png"), but if I try to assign it by storing image name in a local variable it gives this exception "require() must have a single string literal argument"This line works fine

<ImageBackground source={require("./Resources/bg/imageone.png")} resizeMode='cover' style={customStyles.backdrop}>

在这种情况下出现问题

let imageName = "./Resources/bg/imageone.png";
<ImageBackground id="123" source={require(imageName)} resizeMode='cover' style={customStyles.backdrop}>

我还发现同样的问题报告，但还没有人回答。你可以帮帮我吗？

I also found same issue reported here, but no one has answered that yet. Can you help me out here?

推荐答案

这个动态图像示例还可以显示如何使用图像源正确分配变量值。建议在变量中分配整个 require ，而不仅仅是它的值。

This example of dynamic images can also show how to correctly assign a variable with the image source value. The recommendation is to assign the whole require in a variable, instead of just its value.

// GOOD
<Image source={require('./my-icon.png')} />;

// BAD
var icon = this.props.active ? 'my-icon-active' : 'my-icon-inactive';
<Image source={require('./' + icon + '.png')} />;

// GOOD
var icon = this.props.active
  ? require('./my-icon-active.png')
  : require('./my-icon-inactive.png');
<Image source={icon} />;

希望它帮助

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