phonegap相機api商店圖片

我是新來的所有這一切，請耐心等待。我正在嘗試使用相機api按照http://docs.phonegap.com/en/2.6.0/cordova_camera_camera.md.html#cameraOptions示例執行我的第一個phonegap應用程序。phonegap相機api商店圖片

我得到它的工作，但當我離開頁面，然後返回時，圖像消失了。如何在本地保存它，以便當我打開頁面時，使用此應用拍攝的所有圖像仍然存在？

我認爲這將涉及到websql與圖像的網址？你知道那裏有任何教程嗎？

我希望我解釋正確。

我的例子基本上是從PhoneGap的網站直接複製：

<!DOCTYPE html> 
<html> 
<head> 
    <meta charset="utf-8"> 
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no"> 
    <meta name="apple-mobile-web-app-capable" content="yes"> 
    <meta name="apple-mobile-web-app-status-bar-style" content="black"> 
    <title></title> 
<!-- Extra Codiqa features --> 
    <link rel="stylesheet" href="codiqa.ext.css"> 
    <link href="css/themes/default/main_plain.css" rel="stylesheet" type="text/css"> 
    <link href="css/themes/curatio.min.css" rel="stylesheet" type="text/css"> 
    <link href="css/themes/default/jquery.mobile.structure-1.3.2.min.css" rel="stylesheet" type="text/css"> 
    <!--<link href="css/themes/default/jquery.mobile-1.3.2.min_plain.css" rel="stylesheet" type="text/css">--> 

    <!-- jQuery and jQuery Mobile --> 
    <script src="js/jquery.js"></script> 
    <script src="js/jquery.mobile-1.3.2.min.js"></script> 

    <script type="text/javascript" charset="utf-8" src="cordova-2.4.0.js"></script> 
    <script type="text/javascript" charset="utf-8"> 

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

    // Wait for device API libraries to load 
    // 
    document.addEventListener("deviceready",onDeviceReady,false); 

    // device APIs are available 
    // 
    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 in-line 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 in-line 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, 
     sourceType : Camera.PictureSourceType.CAMERA, 
     allowEdit : true, 
     encodingType: Camera.EncodingType.JPEG, 
     targetWidth: 300, 
     targetHeight: 380, 
     popoverOptions: CameraPopoverOptions, 
     saveToPhotoAlbum: true }); 
    } 

    // 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, saveToPhotoAlbum: true }); 
    } 

    // 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, saveToPhotoAlbum: true }); 
    } 

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

    </script> 
    </head> 
    <body> 


<div data-role="page" id="page1"> 
    <div data-theme="c" data-role="header"> 
     <!--<h3> 
      Curatio 
     </h3>--> 
     <div data-role="navbar" data-iconpos="top"> 
      <ul> 
       <li> 
        <a href="usermenu.html" rel="external" data-transition="fade" data-theme="" data-icon="edit" 
        class="ui-btn-active ui-state-persist"> 
         Menu 
        </a> 
       </li> 
       <li> 
        <a href="#page1" data-transition="fade" data-theme="" data-icon="search"> 
         Search 
        </a> 
       </li> 
       <li> 
        <a href="#page1" data-transition="fade" data-theme="" data-icon="alert"> 
         Reminders 
        </a> 
       </li> 
       <li> 
        <a href="map.html" rel="external" data-transition="fade" data-theme="" data-icon="info"> 
         Contact 
        </a> 
       </li> 
      </ul> 
     </div> 
    </div> 
    <div data-role="content"> 
     <h3> 
      Diagnostic Imaging 
     </h3> 
    <button onclick="capturePhotoEdit();">Capture Editable Photo</button> <br> 
    <button onclick="getPhoto(pictureSource.PHOTOLIBRARY);">From Photo Library</button><br> 

    <img style="display:none;width:300px;height:400px;" id="smallImage" src="" /> 
    <img style="display:none;" id="largeImage" src="" /> 
    </div>

來源

2013-12-08 user2110655

您將需要通過改變destinationType將圖像保存到文件系統：

destinationType: destinationType. FILE_URI

在你onPhotoDataSuccess你會獲取圖像的路徑並可以重新加載（稍後）。

就像在每個單頁面應用程序中一樣，您需要存儲狀態。如果你離開你的頁面，狀態就消失了。

來源

2013-12-08 12:14:53

哇！這比我發現的其他解決方案更容易，其中包括將圖像從tmp位置移動到新位置。 – Automatico

phonegap相機api商店圖片

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