Question

我想在我的用于ios的cordova应用程序构建中包含Camera插件。所以我用了一个来自互联网的样本这是我的代码及其工作

<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。并给出一个href链接到这个页面。我从另一个页面调用了此页面URL，但它没有成功。我已将这些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。我怎么能解决这个问题？如何在页面中访问那些插件而不是启动页面???

伙计们请帮助我.. :)提前谢谢

Answer 1

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活动。实际上，您的代码会失败，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>

如果您在Android手机上测试应用程序，ADT套件会提供logcat来跟踪设备上的JavaScript错误。

Answer 2

用这个替换你的相机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);
}

无法在第二页访问Cordova插件

2 个答案: