在第二页中无法访问Cordova插件

Question

我想将Camera插件包含在适用于ios的cordova应用程序构建中。 所以我使用了一个来自互联网的样本，这是我的代码及其工作原理

<html>
  <head>
    <title>Capture Photo</title>
    <script type="text/javascript" charset="utf-8" src="cordova.js"></script>
    <script type="text/javascript" charset="UTF-8" src="cordova_plugins.js"></script>
    <script type="text/javascript" charset="utf-8">
    var pictureSource;
    var destinationType; 
    document.addEventListener("deviceready",onDeviceReady,false);
    function onDeviceReady() {
        pictureSource=navigator.camera.PictureSourceType;
        destinationType=navigator.camera.DestinationType;
    }
    function onPhotoDataSuccess(imageData) {
      var smallImage = document.getElementById('smallImage');
      smallImage.style.display = 'block';
      smallImage.src = "data:image/jpeg;base64," + imageData;
    }

    function onPhotoURISuccess(imageURI) {
      var largeImage = document.getElementById('largeImage');
      largeImage.style.display = 'block';
      largeImage.src = imageURI;
    }

    function capturePhoto() {
      navigator.camera.getPicture(onPhotoDataSuccess, onFail, { quality: 50,
        destinationType: destinationType.DATA_URL });
    }

    function capturePhotoEdit() {
      navigator.camera.getPicture(onPhotoDataSuccess, onFail, { quality: 20, allowEdit: true,
        destinationType: destinationType.DATA_URL });
    }
    function getPhoto(source) {
      navigator.camera.getPicture(onPhotoURISuccess, onFail, { quality: 50,
        destinationType: destinationType.FILE_URI,
        sourceType: source });
    }
    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>

但是我的应用程序中有很多页面。 所以我创建了更多的html页面。 并为此页面提供href链接。 我从另一个页面调用了该页面的URL，但是没有成功。 我已经将这些cordova.js和脚本文件添加到我的index.html页面中。 我仍然无法访问相机。 我该如何解决这个问题？ 我如何在起始页面以外的页面中访问那些插件？？？

伙计们请帮助我.. :)预先感谢

Answer 1

当应用程序启动时， deviceready事件仅触发一次。 您可以安全地访问navigator.camera而无需等待下一页上的事件。 实际上，您的代码将失败，因为pictureSource和destinationType将是未定义的。

<script type="text/javascript" charset="utf-8">
var pictureSource = pictureSource=navigator.camera.PictureSourceType;
var destinationType = navigator.camera.DestinationType; 

function onPhotoDataSuccess(imageData) {
  var smallImage = document.getElementById('smallImage');
  smallImage.style.display = 'block';
  smallImage.src = "data:image/jpeg;base64," + imageData;
}

function onPhotoURISuccess(imageURI) {
  var largeImage = document.getElementById('largeImage');
  largeImage.style.display = 'block';
  largeImage.src = imageURI;
}

function capturePhoto() {
  navigator.camera.getPicture(onPhotoDataSuccess, onFail, { quality: 50,
    destinationType: destinationType.DATA_URL });
}

function capturePhotoEdit() {
  navigator.camera.getPicture(onPhotoDataSuccess, onFail, { quality: 20, allowEdit: true,
    destinationType: destinationType.DATA_URL });
}
function getPhoto(source) {
  navigator.camera.getPicture(onPhotoURISuccess, onFail, { quality: 50,
    destinationType: destinationType.FILE_URI,
    sourceType: source });
}
function onFail(message) {
  alert('Failed because: ' + message);
}
</script>

如果您要在Android手机上测试应用程序，则ADT捆绑包会提供logcat来跟踪设备上的JavaScript错误。

Answer 2

用这个替换您的相机cordova插件文件js

var pictureSource;
var destinationType;
document.addEventListener("deviceready", onDeviceReady, false);

function onDeviceReady() {
    pictureSource = navigator.camera.PictureSourceType;
    destinationType = navigator.camera.DestinationType;
}

function onPhotoDataSuccess(imageData) {
    var smallImage = document.getElementById('smallImage');
    smallImage.style.display = 'block';
    smallImage.src = imageData;
}

function onPhotoURISuccess(imageURI) {
    var largeImage = document.getElementById('largeImage');
    largeImage.style.display = 'block';
    largeImage.src = imageURI;
}

function capturePhoto() {
    navigator.camera.getPicture(onPhotoDataSuccess, onFail, {
        quality: 50,
        destinationType: destinationType.FILE_URI
    });
}

function capturePhotoEdit() {
    navigator.camera.getPicture(onPhotoDataSuccess, onFail, {
        quality: 20,
        allowEdit: true,
        destinationType: destinationType.FILE_URI
    });
}

function getPhoto(source) {
    navigator.camera.getPicture(onPhotoURISuccess, onFail, {
        quality: 50,
        destinationType: destinationType.FILE_URI,
        sourceType: source
    });
}

function onFail(message) {
    alert('Failed because: ' + message);
}

在第二页中无法访问Cordova插件

问题描述

2 个解决方案

解决方案1
0 2014-03-27 08:51:56

解决方案2
0 2014-03-29 20:31:51

在第二页中无法访问Cordova插件

问题描述

2 个解决方案

解决方案1 0 2014-03-27 08:51:56

解决方案2 0 2014-03-29 20:31:51

解决方案1
0 2014-03-27 08:51:56

解决方案2
0 2014-03-29 20:31:51