Android Question Error open pdf

[devmobile]

Hello
I cannot open pdf file and get below error (i have a pdf reader in my device)

My code :

    Dim it As Intent
    it.Initialize(it.ACTION_VIEW, "file://" & File.Combine(File.DirRootExternal & "/", "invoice.pdf"))
    it.SetType("application/pdf")
    StartActivity(it)

 

[Star-Dust]

Try this

Dim it As Intent
it.Initialize(it.ACTION_VIEW, "file://" & File.Combine(File.DirRootExternal , "invoice.pdf"))
it.SetType("application/pdf")
StartActivity(it)

 

[devmobile]

Try this

Dim it As Intent
    it.Initialize(it.ACTION_VIEW, "file://" & File.Combine(File.DirRootExternal , "invoice.pdf"))
    it.SetType("application/pdf") StartActivity(it)

Not working

 

[Star-Dust]

Dim it As Intent

it.Initialize(it.ACTION_VIEW, File.Combine(File.DirRootExternal , "invoice.pdf"))
it.SetType("application/pdf")
StartActivity(it)

Not need "file://"

 

[devmobile]

Dim it As Intent

it.Initialize(it.ACTION_VIEW, File.Combine(File.DirRootExternal , "invoice.pdf"))
it.SetType("application/pdf")
StartActivity(it)

Not need "file://"

It get error
android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=/storage/emulated/0/invoice.pdf typ=application/pdf flg=0x20000 }

 

[Star-Dust]

Have installed PDF reader?

 

[devmobile]

Have installed PDF reader?

No but my filemanager can open pdf file
Do i install pdf reader other?

 

[devmobile]

I install pdf reader and my pdf opend successfully with first post example code