PhoneGap的如何下载和Android应用程序打开PDF文件 [英] Phonegap how to download and open pdf file in android app

问题描述

最近我工作的一个Android应用程序建立在PhoneGap的，我很新与移动的发展，这我SMY第一appsbut，和我被困在尝试下载一些文件（PDF，DOC，JPG格式）到本地存储和打开它，通过谷歌搜索后，我试图按照<一个href="http://stackoverflow.com/questions/13375234/how-to-open-downloaded-file-pdf-zip-docx-etc-in-phonegap-app">this解决方案。

recently i am working on a android apps build in phonegap, i am quite new with mobile development and this i smy first appsbut, and i am stuck when try to download some documents (pdf, doc, jpg) to local storage and open it, after search through google and i tried to follow this solution.

我跟着确切code的例子，下面是我如何调用该插件：

I followed the exact code in the example and below is how i call the plugins:

window.plugins.downloader.downloadFile(url,'/sdcard/download/', 'test.pdf', true, downloadOkCallbak, downloadErCallbak);
    window.plugins.pdfViewer.showPdf('/sdcard/download/test.pdf');

URL是我的远程文件，当我执行它，我得到错误：类型错误：window.plugins是不确定的。任何人的帮助是AP preciated。

The url is my remote file, when i execute it, i got error: "TypeError: window.plugins is undefined". Anyone help is appreciated.

[更新] 我的$ C $ showPdf功能的C：

[update] My code of showPdf function:

public String showPdf(String fileName) {

    File file = new File(fileName);

    if (file.exists()) {
        try {
            Uri path = Uri.fromFile(file);
            Intent intent = new Intent(Intent.ACTION_VIEW);
            intent.setDataAndType(path, "application/pdf");
            intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);


            //intent.setData(Uri.parse(fileName));
            this.ctx.startActivity(intent);
            return "";
        } catch (android.content.ActivityNotFoundException e) {
            System.out.println("PdfViewer: Error loading url "+fileName+":"+ e.toString());
            return e.toString();
        }            

    }else{
        return "file not found";
    }

}

[更新2] 我得到了下面的Web控制台错误：未捕获ReferrenceError：LocalFileSystem不是在...定义

[Update 2] I got below error in web console: Uncaught ReferrenceError: LocalFileSystem is not defined at ...

可能是什么问题？

推荐答案

我有同样的问题，因为OP而有很多不成功的方法后，我来到了以下解决方案（与科尔多瓦3.1.0-3.3.0和放大器测试;三星银河S3和放大器;的iOS 7）：

I had the same problem as the OP and many unsuccessful approaches later I came to the following solution (tested with Cordova 3.1.0-3.3.0 & Samsung Galaxy S3 & iOS 7):

首先，获得由文件请求的文件系统，然后从下载你的服务器，<一个href="http://docs.phonegap.com/en/3.1.0/cordova_file_file.md.html#FileTransfer_download">fileTransfer.download().在下载完成呼叫FileOpener后（这将打开一个弹出，从应用程序，如Adobe Reader的选择）。注意：确保通过CLI /终端包括了文件传输功能：科尔多瓦插件添加org.apache.cordova.file

First, get the file by requesting the file system and then download it from your server with fileTransfer.download(). After completing the download call the FileOpener (which will open a pop up where to choose from apps like Adobe Reader). Note: Make sure to include the FileTransfer feature via CLI/Terminal: cordova plugin add org.apache.cordova.file

• 在浏览到您的项目文件夹
• 开启CLI /终端并键入： 科尔多瓦插件添加https://github.com/don/FileOpener.git
• 在成功下载和存储文件的设备上（见上文）你打开它后： <$c$c>window.plugins.fileOpener.open("file:///sdcard/Android/data/com.example.application/document.doc")或iOS上适当的路径。

这就是它！祝你好运！

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