我第一次在WP7中尝试PhoneGap / Cordova 2.1.0,所以我是新手。
我应该做的是通过相机拍摄照片并将其上传到服务器。
这是我的代码:
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, height=device-height, initial-scale=1.0, maximum-scale=1.0, user-scalable=no;" />
<meta http-equiv="Content-type" content="text/html; charset=utf-8"/>
<title>PhoneGap WP7</title>
<script type="text/javascript" charset="utf-8" src="cordova-2.1.0.js"></script>
<script type="text/javascript">
document.addEventListener("deviceready", onDeviceReady, false);
function onDeviceReady() { }
function capturePhoto()
{
// Take picture using device camera and retrieve image
navigator.camera.getPicture(
onPhotoDataSuccess,
onFail,
{
quality: 50,
destinationType: Camera.DestinationType.DATA_URL
}
);
}
function onPhotoDataSuccess(imageData)
{
var options = new FileUploadOptions();
options.fileKey = "file";
options.fileName = imageData.substr(imageData.lastIndexOf('/') + 1);
options.mimeType="image/jpeg";
var params = new Object();
options.params = params;
var ft = new FileTransfer();
ft.upload(imageData, "http://mysite.com/upload.php", win, fail, options);
}
function onFail(message)
{
navigator.notification.alert('Failed because: ' + message);
}
var win = function(r)
{
navigator.notification.alert(r.responseCode + " - " + r.response + " - " + r.bytesSent);
}
var fail = function(error)
{
navigator.notification.alert(eval(error));
}
</script>
</head>
<body>
<h1>PhoneGap Photo Demo</h1>
<button onclick="capturePhoto();">Capture a Photo</button>
</body>
</html>
当我尝试这个时,上传不起作用,我得到一个空的错误对象:
{ "code":null, "source":null, "target":null, "http_status":null }
一些注意事项:
我跟踪this trick因为WP7中缺少白名单。
php代码不是由我编写的,我会在asp.net中编写,如果有人可以提供asp.net webservice的工作示例,我将非常感激。
感谢。
修改
我调试了FileTransfer类,我在JsonHelper类中遇到错误:
using (MemoryStream mem = new MemoryStream(Encoding.UTF8.GetBytes(json)))
{
result = deserializer.ReadObject(mem);
}
错误是:InvalidCastException
答案 0 :(得分:0)
修改
尝试替换
uploadOptions = JSON.JsonHelper.Deserialize<UploadOptions[]>(options)[0];
使用以下
options = JSON.JsonHelper.Deserialize<string[]>(options)[0];
uploadOptions = JSON.JsonHelper.Deserialize<UploadOptions>(options);
原始答案
解决此类问题的最简单方法是添加对Cordova库源代码的引用,而不是编译WP7CordovaClassLib.dll
cordova-2.1.0-incubating-src \ cordova-2.1.0 \ incubator-cordova-wp7 \ framework \ WP7CordovaClassLib.csproj
http://www.apache.org/dist/incubator/cordova/
然后将断点添加到standalone \ cordovalib \ Commands \ FileTransfer.cs
/// <summary>
/// sends a file to a server
/// </summary>
/// <param name="options">Upload options</param>
public void upload(string options)
{
Debug.WriteLine("options = " + options);
options = options.Replace("{}", "null");
听起来很复杂,但根据我的经验,逐行调试是解决Apache Cordova在许多情况下出现什么问题的最简单方法。