5

我正在制作一个需要从我的网站下载图像并将它们存储在手机中的应用程序，但是当我尝试 phonegap 时，我会看到所有可能发生的错误。我能做些什么来纠正这个=/？

var fileTransfer = new FileTransfer();
fileTransfer.download(
    "http://developer.android.com/assets/images/home/ics-android.png",
    "/",
    function(entry) {
        alert("download complete: " + entry.fullPath);
    },
    function(error) {
        alert("download error source " + error.source);
        alert("download error target " + error.target);
        alert("upload error code" + error.code);
    });

显示的错误是：

Download error source " the url used"
download error target: " the target used  "
upload error code 1

我正在使用科尔多瓦 2.2.0

这是 logcat 错误日志：

 12-06 09:07:26.413: E/FileTransfer(2186): {"target":"\/","source":"http:\/\/developer.android.com\/assets\/images\/home\/ics-android.png","code":1}
12-06 09:07:26.413: E/FileTransfer(2186): java.io.FileNotFoundException
12-06 09:07:26.413: E/FileTransfer(2186):   at org.apache.cordova.FileTransfer.getFileFromPath(FileTransfer.java:794)
12-06 09:07:26.413: E/FileTransfer(2186):   at org.apache.cordova.FileTransfer.access$700(FileTransfer.java:62)
12-06 09:07:26.413: E/FileTransfer(2186):   at org.apache.cordova.FileTransfer$4.run(FileTransfer.java:631)
12-06 09:07:26.413: E/FileTransfer(2186):   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
12-06 09:07:26.413: E/FileTransfer(2186):   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
12-06 09:07:26.413: E/FileTransfer(2186):   at java.lang.Thread.run(Thread.java:856)
4

2 回答 2

9

你是如此接近，它只是你的目标文件是错误的。尝试：

var fileTransfer = new FileTransfer();
fileTransfer.download(
    "http://developer.android.com/assets/images/home/ics-android.png",
    "file://sdcard/ics-android.png",
    function(entry) {
        alert("download complete: " + entry.fullPath);
    },
    function(error) {
        alert("download error source " + error.source);
        alert("download error target " + error.target);
        alert("upload error code" + error.code);
    });

您需要“file://”前缀，并且由于您没有权限，因此无法保存到“/”。

于 2012-12-06T19:14:11.353 回答
2

我已经尝试过，并且可以在 Android 中使用，但我还没有在 ios 中检查。并且下载成功，因为我在我的项目中使用它。

enter code here
 function fun(){
var dfd = $.Deferred(function (dfd){
var remoteFile = "Your link";
var localFileName = remoteFile.substring(remoteFile.lastIndexOf('/')+1);
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, function(fileSystem) {
fileSystem.root.getFile(localFileName, {create: true, exclusive: false},
    function(fileEntry) {
var localPath = fileEntry.fullPath;
if (device.platform === "Android" && localPath.indexOf("file://") === 0) {
            localPath = localPath.substring(7);
            }// You need to write IOS instead of Android

    var ft = new FileTransfer();
    ft.download(remoteFile, localPath, function(entry) {
    dfd.resolve('file downloaded');
     // Do what you want with successful file downloaded and then
    // call the method again to get the next file
    //downloadFile();
            }, fail);
             }, fail);
            }, fail);

           });
            return dfd.promise();

        }
                fun().then(function(msg){
            if(msg==="file downloaded")
            {
            alert("Download complete");
            }
            else
            {
            alert("Download error")
            }
            });
            function fail(){
            alert("error");
        }
于 2014-03-10T07:15:00.720 回答