Android Question open pdf from dirRootExternal

[bernardR]

Hello,
I have an app no-google for Android 10 with permission WRITE_EXTERNAL_STORAGE.

I have read:

Opening pdf file

Hi everyone, I am not able to make the following code to open a specific file. BytesToFile(File.DirDefaultExternal & "/" & AppName,vFileName,mm.Image) chatroompage.chat1.AddItem(mm.Name & CRLF & vFileName,False) Log("-----------Done-------------") 'ToastMessageShow("Download...

www.b4x.com

[class] FileProvider - share files

Edit: FileProvider is included as an internal library now. After investigating several issues with the current FileProvider code that you can find in the forum, I decided to make some improvements and implement it in a class. Starting from Android 7 (API 24) you cannot directly share file uris...

www.b4x.com

and I have modified the manifest for fileProvider

I need open the file test.pdf in DirRootExternal.
It not works.

The intent is displayed but not the file (no error'message)

Can you aid me, please ?

 

[Mahares]

need open the file test.pdf in DirRootExternal.

You can use the temporary legacy since you are using SDK 29 (OS 10) . Add to manifest:

SetApplicationAttribute(android:requestLegacyExternalStorage, true)

See this link for more information

android.jar / targetSdkVersion / minSdkVersion

There are several versioned components that affect the compilation process and the runtime behavior of our apps. The purpose of this tutorial is to explain the differences between them and help you choose which version to use. Each Android version is mapped to an api level. You can see this...

b4x.com

 

[bernardR]

[CODE lang="b4x" title="Here my manifest"]
SetApplicationAttribute(android:requestLegacyExternalStorage, true)
AddApplicationText(
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="$PACKAGE$.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths"/>
</provider>
)
CreateResource(xml, provider_paths,
<files-path name="name" path="shared" />
)
AddPermission(android.permission.WRITE_EXTERNAL_STORAGE)
[/CODE]

I know how get permission WRITE_EXTERNAL_STORAGE by RuntimePermissions.
In manifest, requestLegacyExternalStorage is true,but the intent is displayed but not the file.
Is it possible to program the intent and File Provider for open test.pdf in DirRootExternal ?
Thanks

 

[bernardR]

This sub works

Sub displayPDF(FileName As String)
    File.Copy(File.DirRootExternal,FileName, Provider.SharedFolder, FileName)
    Dim sp As Intent
    sp.Initialize(sp.ACTION_VIEW, "")
    Provider.SetFileUriAsIntentData(sp, FileName)
    'Type must be set after calling SetFileUriAsIntentData
    sp.SetType("application/pdf")
    StartActivity(sp)
End Sub

I don't know if it works on android 11

 

[Erel]

Code with File.DirRootExternal is likely to fail on new versions of Android.

You should instead use ContentChooser to let the user choose the file, copy it to the shared folder, and then share it with FileProvider.