android - 运行 phonegap 相机示例时出错

Question

您好，我尝试运行 phonegap camera sample在我的 Sony Xperia E 设备上。该应用程序在设备中正确启动，但是当我点击“拍摄照片”按钮时，我收到警告框显示“失败，因为:找不到类”。在 eclipse 的 LogCat View 中，我发现了这些错误日志:

W/System.err: java.lang.ClassNotFoundException: org.apache.cordova.CameraLauncher
W/System.err:   at java.lang.Class.classForName(Native Method)
W/System.err:   at java.lang.Class.forName(Class.java:217)
W/System.err:   at java.lang.Class.forName(Class.java:172)
W/System.err:   at org.apache.cordova.PluginEntry.getClassByName(PluginEntry.java:117)
W/System.err:   at org.apache.cordova.PluginEntry.createPlugin(PluginEntry.java:93)
W/System.err:   at org.apache.cordova.PluginManager.getPlugin(PluginManager.java:264)
W/System.err:   at org.apache.cordova.PluginManager.execHelper(PluginManager.java:219)
W/System.err:   at org.apache.cordova.PluginManager.exec(PluginManager.java:214)
W/System.err:   at org.apache.cordova.ExposedJsApi.exec(ExposedJsApi.java:53)
W/System.err:   at android.webkit.WebViewCore.nativeMouseClick(Native Method)
W/System.err:   at android.webkit.WebViewCore.nativeMouseClick(Native Method)
W/System.err:   at android.webkit.WebViewCore.access$6700(WebViewCore.java:57)
W/System.err:   at android.webkit.WebViewCore$EventHub.dispatchWebKitEvent(WebViewCore.java:1856)
W/System.err:   at android.webkit.WebViewInputDispatcher.dispatchWebKitEvent(WebViewInputDispatcher.java:689)
W/System.err:   at android.webkit.WebViewInputDispatcher.dispatchWebKitEvents(WebViewInputDispatcher.java:639)
W/System.err:   at android.webkit.WebViewInputDispatcher.access$800(WebViewInputDispatcher.java:78)
W/System.err:   at android.webkit.WebViewInputDispatcher$WebKitHandler.handleMessage(WebViewInputDispatcher.java:1153)
W/System.err:   at android.os.Handler.dispatchMessage(Handler.java:99)
W/System.err:   at android.os.Looper.loop(Looper.java:137)
W/System.err:   at android.webkit.WebViewCore$WebCoreThread.run(WebViewCore.java:827)
W/System.err:   at java.lang.Thread.run(Thread.java:856)
W/System.err: Caused by: java.lang.NoClassDefFoundError: org/apache/cordova/CameraLauncher
W/System.err:   ... 21 more
W/System.err: Caused by: java.lang.ClassNotFoundException: org.apache.cordova.CameraLauncher
W/System.err:   at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
W/System.err:   at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
W/System.err:   at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
W/System.err:   ... 21 more
I/System.out: Error adding plugin org.apache.cordova.CameraLauncher.
D/PluginManager: exec() call to unknown plugin: Camera

我严格按照文档的要求在config.xml中添加了如下内容:

<feature name="Camera">
    <param name="android-package" value="org.apache.cordova.CameraLauncher" />
</feature>

我也从我的 android-sdk 文件夹中成功运行了这一行:

cordova plugin add https://git-wip-us.apache.org/repos/asf/cordova-plugin-camera.git

我已经在 eclipse 中清理了几次项目并运行了几次，结果都是一样的。谁知道我哪里错了？

谢谢...

附言

• phonegap 版本:3.0.0-0.14.4
• Cordova 版本:3.0.9

index.html:

<script type="text/javascript" charset="utf-8" src="cordova.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
    //alert(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) {
    alert("inside large image")
    // 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() {
  // 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>

Answer 1

我刚刚从 Camera API 文档及其 src/android/CameraLauncher.java 文件的包名是 com.apache.cordova.camera 如果您的源代码也使用这个包名，那么您的配置文件值应该更改为 org.apache.cordova.camera.CameraLauncher