找不到變量函數聲明本機反應

Question

我收到錯誤消息“找不到變量uploadImageAsync”

uploadImageAsync = async (uri) => {
  console.log("In upload image asnyc!");
}

這就是我所說的。

_handleImagePicked = async pickerResult => {
let uploadResponse, uploadResult;

  this.setState({ uploading: true });

  if (!pickerResult.cancelled) {
    uploadResponse = await uploadImageAsync(pickerResult.uri);
    uploadResult = await uploadResponse.json();
    this.setState({ image: uploadResult.location });
  }
    this.setState({ uploading: false });
};

我該如何解決？

到目前為止，我已經嘗試過：

async function uploadImageAsync(uri) {

我也嘗試過：

async uploadImageAsync(uri) {

Answer 1

如果uploadImageAsync函數在同一組件中定義，則需要調用this.uploadImageAsync 。

否則，必須從其他模塊import

或在同一文件中的組件外部定義函數。