无法使用FileOpener2打开文件，但无法在Android中收到错误

问题描述：

我正在尝试使用FileOpener2（通过ng-cordova）使用以下代码打开PDF文件：

I am attempting to open a PDF file with FileOpener2 (through ng-cordova) with the following code:

$cordovaFile.checkFile(cordova.file.dataDirectory, attachmentPath)
    .then((fileEntry) => {
        // success
        fileEntry.getMetadata((metadata) => {
            // metadata.size is in bytes
            var megabyteSize = metadata.size / 1048576;

            if (megabyteSize > 5) {
                var path = cordova.file.dataDirectory + attachmentPath;
                console.log(path); // prints: file:///data/data/com.ionicframework.enhatch146189/files/attachments/CS-353ES_CS-420ES_Eng.pdf which is correct

                $cordovaFileOpener2.open(path, 'application/pdf').then(() => {
                    console.log("Opened!") // prints
                }, (error) => {
                    console.log(error);
                    usePDFJs(); // tries to render PDF in app with PDFJs
                });
            } else {
                usePDFJs();
            }
        })
    }, function (error) {
        // error
        console.error(error);
    });

让我感到困惑的是：它提示我在Adobe Reader中打开此文件？并列出其他PDF查看器，控制台打印打开！

What happens confuses me: it prompts me with an "open this file in Adobe Reader?" and lists the other PDF viewers, and the console prints "Opened!"

然而，无论我打开任何pdf，我都会遇到某种错误，例如无法打开此PDF文件。

However, no matter what I open ANY pdf in, I get some sort of error such as "cannot open this PDF file".

有人能看到这段代码有问题吗？

Can anyone see something wrong with this code?

答

显然，如果您在Android上使用 cordova.file.dataDirectory ，则无法在其他应用程序中打开这些文件或将其附加到电子邮件中。愚蠢的错误 - 编码太快，在文档上读得太少。使用 cordova.file.externalApplicationStorageDirectory 解决了这个问题。

Apparently, if you use cordova.file.dataDirectory on android you can't open those files in other applications or attach them to emails. Silly mistake -- coded too fast and read too little on the documentation. Using cordova.file.externalApplicationStorageDirectory solved the issue.

无法使用FileOpener2打开文件，但无法在Android中收到错误

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