我正在开发一个React本机应用程序。我正在使用react-native-image-crop-picker上传一批图像。使用将路径存储在数组中并一一上传图像的方式。但我无法生成上传文件的可下载链接。我遇到2个错误
1）无法读取未定义的属性“ then”
2）尝试获取可下载链接时，找不到对象
下面是我的代码
AddProduct = () => {
this.setState({ loading: true })
this.setState({ disabled: true })
//-------------UUIDGenerator-------------
UUIDGenerator.getRandomUUID().then((productUid) => {
this.setState({ productUid });
() => console.log("setted state=" + this.state.productUid)
console.log("Generated UUid " + this.state.productUid)
});
//----------------------------------------
//image upload
try {
setTimeout(() => {
const fs = RNFetchBlob.fs
const uid = "flyers/" + this.state.productUid;
const imageRef = firebase.storage().ref(uid).child('abc' + ".jpg") //string "dp1.jpg"
let mime = 'image/jpg'
if (this.state.imagePath === "") {
alert("Select a Flyer")
return
}
//-----------------Checking Inputs-----------
if (this.state.title.length < 1) {
alert("Enter a Title");
return;
}
if (this.state.description.length < 3) {
alert("Enter At least 3 words To describe the product ")
return;
}
if (this.state.storename.length < 1) {
alert("Enter a Storename")
return;
}
alert("Uploading Flyer" + this.state.title)
//------------------------------------------------
this.state.imagePath.forEach((data) => {
// coverting to base64
new Promise((resolve, reject) => {
fs.readFile(data, 'base64')
.then((data) => {
return Blob.build(data, { type: `${mime};BASE64` })
})
.then((blob) => {
console.log("blob " +JSON.stringify(blob))
//uplaoding Image
uploadBlob = blob
name =name + 1
firebase.storage().ref(uid).child(name + ".jpg").put(blob) // ,{ contentType: mime }
})
.then(() => {
//uploadBlob.close()
//getting url
console.log("1")
return firebase.storage().ref(uid).child(name + ".jpg").getDownloadURL()
})
})
})
.then(() => {
//urls = url;
console.log('urls=' + urls)
//================================
try {
alert("Uploading Flyerss" + this.state.title)
//-------------------------------------------
//----------Inserting Data to Database--------
usersTable = 'flyers/' + this.state.productUid,
console.log(usersTable)
firebase.database().ref(usersTable).set(
{
title: this.state.title,
description: this.state.description,
imageUrls: this.state.imageUrls,
storename: this.state.storename,
user: asyncValue,
longitude: this.state.longitude,
latitutde: this.state.latitutde
}
).then(
console.log("then"),
this.title.clear(),
this.description.clear(),
//this.category.clear(),
this.setState({ loading: false }),
this.setState({ disabled: false }),
this.setState({ title: "" }),
this.setState({ storename: "" }),
this.setState({ description: "" }),
this.setState({ imagePath: "" }),
urls = "",
alert(this.state.title + " flyer sucessfully uploaded")
)
//--------------------------------------------
}
catch (error) {
this.setState({ loading: false })
this.setState({ disabled: false })
console.log(error.toString())
alert(error.toString())
}
//================================
})
}, 3000)
}
catch (error) {
console.log("upload Error = " + error)
}
}