将此pdf保存在离子上的缓存/本地存储中 [英] Save this pdf in the cache/local storage on ionic

问题描述

大家好。我按照本教程创建了一个带有pdfmake生成的pdf的模态视图。

Ho to everyone. I followed this tutorial to create a modal view with a pdf generated with pdfmake.

http://gonehybrid.com/how-to-create-and-display-a-pdf-file-in -your-ionic-app /

我的问题是如何将pdf保存在缓存中的本地存储中？我需要通过电子邮件发送pdf或使用openfile2打开它。我正在使用Ionic和cordova。

My simply question is how can i save the pdf in my local storage on in cache? I need that to send the pdf by email or open it with openfile2. I'm using Ionic and cordova.

推荐答案

使用cordova文件和文件传输插件在设备中编写pdf文件的示例代码：

Sample code to write pdf file in device using cordova file and file transfer plugin:

var fileTransfer = new FileTransfer();

    if (sessionStorage.platform.toLowerCase() == "android") {
        window.resolveLocalFileSystemURL(cordova.file.externalRootDirectory, onFileSystemSuccess, onError);
    } else {
        // for iOS
        window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, onFileSystemSuccess, onError);
    }

    function onError(e) {
        navigator.notification.alert("Error : Downloading Failed");
    };

    function onFileSystemSuccess(fileSystem) {
        var entry = "";
        if (sessionStorage.platform.toLowerCase() == "android") {
            entry = fileSystem;
        } else {
            entry = fileSystem.root;
        }
        entry.getDirectory("Cordova", {
            create: true,
            exclusive: false
        }, onGetDirectorySuccess, onGetDirectoryFail);
    };

    function onGetDirectorySuccess(dir) {
        cdr = dir;
        dir.getFile(filename, {
            create: true,
            exclusive: false
        }, gotFileEntry, errorHandler);
    };

    function gotFileEntry(fileEntry) {
        // URL in which the pdf is available
        var documentUrl = "http://localhost:8080/testapp/test.pdf";
        var uri = encodeURI(documentUrl);
        fileTransfer.download(uri, cdr.nativeURL + "test.pdf",
            function(entry) {
                // Logic to open file using file opener plugin
            },
            function(error) {
                navigator.notification.alert(ajaxErrorMsg);
            },
            false
        );
    };

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