Cordova使用文件url移动文件 [英] Cordova Move File using the file url

问题描述

如何使用我从相机获得的网址移动文件？

How can I move a file using the URL I get from the Camera?

既不是successCallback也不是errorCallback由函数moveTo调用。任何人都可以告诉我我在做什么错误，可能的解决方案是什么样子？

neither successCallback nor errorCallback is called by the function moveTo. Can anyone tell me what I am doing wrong and what a possible solution looks like?

function successCallback(entry) {
    console.log("New Path: " + entry.fullPath);
    alert("Success. New Path: " + entry.fullPath);
}

function errorCallback(error) {
    console.log("Error:" + error.code)
    alert(error.code);
}

// fileUri = file:///emu/0/android/cache/something.jpg
function moveFile(fileUri) {
    newFileUri  = cordova.file.dataDirectory + "images/";
    oldFileUri  = fileUri;
    fileExt     = "." + oldFileUri.split('.').pop();

    newFileName = guid("car") + fileExt;

    // move the file to a new directory and rename it
    fileUri.moveTo(cordova.file.dataDirectory, newFileName, successCallback, errorCallback);
}

我使用Cordova版本4.1.2也安装了Cordova文件插件

I am using Cordova version 4.1.2 Also installed the Cordova File Plugin

推荐答案

您尝试在String上调用moveTo函数。

You're trying to call the function moveTo on a String.

moveTO 不是String的函数，而是fileEntry的函数。所以你需要做的第一件事是从你的URI中获取一个fileEntry。

moveTO is not a function of String but of fileEntry. So first thing you need to do is get a fileEntry from your URI.

为此，你需要调用 window.resolveLocalFileSystemURL ：

function moveFile(fileUri) {
    window.resolveLocalFileSystemURL(
          fileUri,
          function(fileEntry){
                newFileUri  = cordova.file.dataDirectory + "images/";
                oldFileUri  = fileUri;
                fileExt     = "." + oldFileUri.split('.').pop();

                newFileName = guid("car") + fileExt;
                window.resolveLocalFileSystemURL(newFileUri,
                        function(dirEntry) {
                            // move the file to a new directory and rename it
                            fileEntry.moveTo(dirEntry, newFileName, successCallback, errorCallback);
                        },
                        errorCallback);
          },
          errorCallback);
}

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