Android:将简单文本共享为文件/附件 [英] Android: share simple text as file/attachment

问题描述

我有一个可以收集一些信息并允许用户使用Android的Intent框架共享它的应用.

I have an app that collects some info and allows the user to share it using Android's Intent framework.

到目前为止，它以纯文本形式共享报告:使用putExtra(Intent.EXTRA_TEXT, report)，其中report是String.

So far, it shares the report as plain text: using putExtra(Intent.EXTRA_TEXT, report), where report is a String.

但是，我希望将报告以文件形式共享，从而使其更易于以电子邮件附件而不是正文的形式共享.

However, I want the report to be shared as a file, making it easy to share as an email attachment rather than the body.

我是否必须为此目的创建一个实际文件?如果这样做，它必须位于其他应用程序可以读取的位置，如发送二进制内容.

Do I have to create an actual file for that purpose? If I do, it has to be in a location that other apps can read, as explained in send binary content.

我期待一个可以提供ByteArrayOutputStream的API，所以也许我只是缺少了一些东西.具体来说，我不想强​​迫共享应用程序获得对任何存储的许可.

I was expecting an API that would allow me to provide a ByteArrayOutputStream, so maybe I'm just missing something. Specifically, I'd rather NOT force the sharing app to get permission to any storage.

推荐答案

使用设置文件共享，以获取简短的教程.

Use FileProvider to share a file that is not publicly accessible. Check out Setting Up File Sharing for a short tutorial.

将文本作为电子邮件附件发送虽然有点棘手.您不能使用text/plain作为类型，因为这意味着数据在EXTRA_TEXT中提供.但是这些额外的文字最终会出现在电子邮件正文中，而不是附件中.

Sending text as an email attachment is a bit tricky though. You can't use text/plain as type because that would imply the data is supplied in EXTRA_TEXT. But text in this extra will end up in the email body, not in an attachment.

以下是可行的方法:

Uri fileUri = FileProvider.getUriForFile(context, "org.example.provider.authority", reportFile);

Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("*/*");
shareIntent.putExtra(Intent.EXTRA_STREAM, fileUri);

startActivity(Intent.createChooser(shareIntent, null)); 

您还应该确保FileProvider.getType()返回报告文件的text/plain.最简单的方法是使用.txt作为文件扩展名，而FileProvider将自动执行正确的操作.

You should also make sure that FileProvider.getType() returns text/plain for the report file. The easiest way to accomplish this is by using .txt as file extension and FileProvider will automatically do the right thing.

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