从 URL 下载 PDF 在 android 应用程序的下载文件夹中 targetSdkVersion=30
[英]Download PDF from a URL in Downloads folder on android app with targetSdkVersion=30
问题描述
I want to download a pdf from a url on Android>=11.
我想在 Android>=11 上从 url 下载 pdf。 My app is targeting android version 30.我的应用程序的目标是 android 版本 30。
I read that due to restrictions introduced from Android 11, it does not easily allow us to store files in external Downloads folder and we have to store it inside Android/package_name/[folder]/[file], but I want to store it in Downloads folder so that my user does not have to go inside Android/package/[Downloads]/[file] to view that file.我读到由于 Android 11 引入的限制，它不容易让我们将文件存储在外部下载文件夹中，我们必须将其存储在 Android/package_name/[folder]/[file] 中，但我想将其存储在下载文件夹，这样我的用户就不必在 Android/package/[Downloads]/[file] 中的 go 来查看该文件。
Also on devices which are running Android<11, I can download that file by simply using getExternalStorageDirectory right?同样在运行 Android<11 的设备上，我可以通过简单地使用 getExternalStorageDirectory 来下载该文件，对吗？ Please provide me some clarity on this.请给我一些澄清。
I found some answers previously but they weren't that helpful.我之前找到了一些答案，但它们并没有那么有帮助。 Can anybody tell me how to achieve this?谁能告诉我如何实现这一目标？
1 个解决方案
解决方案1
0 2021-12-10 07:03:24
In Android 10ff it is not easy to use the java class "File" to store data in a public accessable folder that is pre-defined by your app.(ie the public download folder)在 Android 10ff 中，使用 java class “文件”将数据存储在您的应用程序预定义的公共可访问文件夹中并不容易。（即）
Instead your app has to ask the app-user where he/she wants to store the document .相反，您的应用程序必须询问应用程序用户他/她想要将文档存储在哪里。
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