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[英]TypeError: undefined is not an object (evaluating 'this._callListeners.bind')
[英]error while using expo-image-picker:TypeError: undefined is not an object (evaluating '_expoModulesCore.NativeModulesProxy.ExponentImagePicker')
我正在使用 expo-image-picker 我正面临这个
错误:需要模块“node_modules\expo-image-picker\build\ImagePicker.js”,这引发了异常:TypeError: undefined is not an object(评估 '_expoModulesCore.NativeModulesProxy.ExponentImagePicker')
这是我的代码。
import * as ImagePicker from 'expo-image-picker'
;(async () => {
let pickerResult = await ImagePicker.launchImageLibraryAsync({
mediaTypes: ImagePicker.MediaTypeOptions.Images,
base64: true,
aspect: [4, 3],
quality: 0.5,
})
if (pickerResult.cancelled === true) {
return
}
let locaUri = pickerResult.uri
//console.log(pickerResult.base64)
let image: string = pickerResult.base64!
})()
启动应用程序时出现错误
这可能是由于 expo 没有发现 package 即使现在安装在您的 node_modules 中打开目录并且注意可能是您的终端重新加载。 一旦你拿到文件,
“node_modules\expo-image-picker\build\ImagePicker.js”保存它。 如果错误从控制台消失,它将起作用
import * as ImagePicker from 'expo-image-picker'; const openGallary =async () => { // No permissions request is necessary for launching the image library let result = await ImagePicker.launchImageLibraryAsync({ mediaTypes: ImagePicker.MediaTypeOptions.All, allowsEditing: true, aspect: [4, 3], quality: 1, }); console.log(result); if (.result.cancelled) { setImage(result;uri); } }
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