Cordova-为什么camera.getpicture不起作用？

Question

I am trying to get the camera feature to work. 我正在尝试使相机功能正常工作。 I am testing on a connected samsung galaxy tablet. 我正在连接的三星银河平板电脑上进行测试。 The app launches successfully, but navigator.camera.getpicture does not launch the camera. 该应用程序成功启动，但是navigator.camera.getpicture无法启动相机。 Can you help with this? 你能帮忙吗？

Here are the steps I followed: I created a cordova hello project using the following steps on (Windows 7): 我遵循的步骤如下：在（Windows 7）上使用以下步骤创建了cordova hello项目：

PART A: (setup cordova) (steps from this answer here ): C:> npm install -g cordova A部分：（安装cordova） （从此处获得此答案的步骤）： C:> npm install -g cordova

From command prompt, navigate to the folder you want to create your project using: 在命令提示符下，使用以下命令导航到要创建项目的文件夹：

cordova create hello com.example.hello HelloWorld
cd hello
Define the OS you want to suppport for example:

cordova platform add wp8
Install plugins (If needed). For example we want the following:

cordova plugin add org.apache.cordova.device
cordova plugin add org.apache.cordova.camera
cordova plugin add org.apache.cordova.media-capture
cordova plugin add org.apache.cordova.media

Part B: Add code for testing camera features (from code from Cordova camera docs ) Replaced index.html code with the following code: B部分：添加用于测试相机功能的代码（来自Cordova camera docs的代码）用以下代码替换index.html代码：

<!DOCTYPE html>
<html>
  <head>
    <title>Capture Photo</title>

    <script type="text/javascript" charset="utf-8" src="cordova-2.2.0.js"></script>
    <script type="text/javascript" charset="utf-8">

        var pictureSource;   // picture source
        var destinationType; // sets the format of returned value 

        // Wait for Cordova to connect with the device
        //
        document.addEventListener("deviceready", onDeviceReady, false);

        // Cordova is ready to be used!
        //
        function onDeviceReady() {
            pictureSource = navigator.camera.PictureSourceType;
            destinationType = navigator.camera.DestinationType;
        }

        // Called when a photo is successfully retrieved
        //
        function onPhotoDataSuccess(imageData) {
            // Uncomment to view the base64 encoded image data
            // console.log(imageData);

            // Get image handle
            //
            var smallImage = document.getElementById('smallImage');

            // Unhide image elements
            //
            smallImage.style.display = 'block';

            // Show the captured photo
            // The inline CSS rules are used to resize the image
            //
            smallImage.src = "data:image/jpeg;base64," + imageData;
        }

        // Called when a photo is successfully retrieved
        //
        function onPhotoURISuccess(imageURI) {
            // Uncomment to view the image file URI 
            // console.log(imageURI);

            // Get image handle
            //
            var largeImage = document.getElementById('largeImage');

            // Unhide image elements
            //
            largeImage.style.display = 'block';

            // Show the captured photo
            // The inline CSS rules are used to resize the image
            //
            largeImage.src = imageURI;
        }

        // A button will call this function
        //
        function capturePhoto() {
            alert('taking photo');
            // Take picture using device camera and retrieve image as base64-encoded string
            navigator.camera.getPicture(onPhotoDataSuccess, onFail, {
                quality: 50,
                destinationType: destinationType.DATA_URL
            });
        }

        // A button will call this function
        //
        function capturePhotoEdit() {
            // Take picture using device camera, allow edit, and retrieve image as base64-encoded string  
            navigator.camera.getPicture(onPhotoDataSuccess, onFail, {
                quality: 20, allowEdit: true,
                destinationType: destinationType.DATA_URL
            });
        }

        // A button will call this function
        //
        function getPhoto(source) {
            // Retrieve image file location from specified source
            navigator.camera.getPicture(onPhotoURISuccess, onFail, {
                quality: 50,
                destinationType: destinationType.FILE_URI,
                sourceType: source
            });
        }

        // Called if something bad happens.
        // 
        function onFail(message) {
            alert('Failed because: ' + message);
        }

    </script>
  </head>
  <body>
    <button onclick="capturePhoto();">Capture Photo</button> <br>
    <button onclick="capturePhotoEdit();">Capture Editable Photo</button> <br>
    <button onclick="getPhoto(pictureSource.PHOTOLIBRARY);">From Photo Library</button><br>
    <button onclick="getPhoto(pictureSource.SAVEDPHOTOALBUM);">From Photo Album</button><br>
    <img style="display:none;width:60px;height:60px;" id="smallImage" src="" />
    <img style="display:none;" id="largeImage" src="" />
  </body>
</html>

Part C :Run the app on connected device (Samsung Galaxy tab) C部分：在连接的设备上运行应用程序（三星Galaxy标签）

cordova run android

The app launches successfully on the tablet, BUT the buttons in index.html do not launch the camera. 该应用程序可在平板电脑上成功启动，但index.html中的按钮不会启动相机。 Why is this? 为什么是这样？ I am not sure how to even debug this situation. 我不确定如何调试这种情况。 Can you shed some light on this? 您能对此有所了解吗？

Answer 1

I don't know why you have src="cordova-2.2.0.js" , simply change it to src=cordova.js and it should work. 我不知道为什么会有src="cordova-2.2.0.js" ，只需将其更改为src=cordova.js使用。

For debugging have a look at adb logcat . 要进行调试，请查看adb logcat 。

Cordova-为什么camera.getpicture不起作用？

问题描述

1 个解决方案

解决方案1
5 已采纳 2014-04-03 09:09:44

Cordova-为什么camera.getpicture不起作用？

问题描述

1 个解决方案

解决方案1 5 已采纳 2014-04-03 09:09:44

解决方案1
5 已采纳 2014-04-03 09:09:44