Error starting NFC Tagwriter intent

[bluedude]

What am I doing wrong here?

Sub writeTag (URL As String)

Dim i As Intent
i.Initialize(i.ACTION_SEND,URL)
i.SetComponent ("com.nxp.nfc.tagwriter")
StartActivity(i)

End Sub

 

[Erel]

Which error do you get?
SetComponent expects the package name followed by the activity name.

You can use PackageManager to get the required intent from the package name.

 

[bluedude]

Default intent

As far as I know that will only give me the default intent from that package and not sure if that is the writing mode. I want to make sure that startactivity always starts the NFC writing intent from Tagwriter.

I haven't been able to create a piece of code to get me all intents/activities from a package.

Cheers,

 

[Erel]

I want to make sure that startactivity always starts the NFC writing intent from Tagwriter.

In that case you should consult with NFC and see which Intent they expect for write mode.

 

[bluedude]

Found the activity

Hi,

I found a way to list all activities and it is called WriterActivity.

When listing the acitivities it gives me :

com.nxp.nfc.tagwriter.activities.WriterActivity

However when I run this with below code it gives me an AcvitityNotFoundException while the same piece of code works with YouTube videos (of course with another activity name). I also tried tagwriter.activities/.WriterActivity but no luck.

Is below call correct parameter wise?

Sub writeTag (URL As String)

Dim i As Intent
i.Initialize(i.ACTION_VIEW,URL)
i.SetComponent ("com.nxp.nfc.tagwriter/.WriterActivity")
i.PutExtra ("",URL)
StartActivity(i)

End Sub

 

[Erel]

The component should be:
"com.nxp.nfc.tagwriter/.activities.WriterActivity"

 

[bluedude]

Inconsistent

Do you know why all this stuff is so inconsistent? The youtube component works different

 

[bluedude]

Starts but then quits

That works and it starts the activity but then it quits (not a force close) and goes back to my app.

Arghhh..

 

[Erel]

Do you know why all this stuff is so inconsistent?

Because you are trying to access another app in a non-standard way. Unless they documentation this intent as part of their API then it is likely to be problematic. It can also change when they update their application.

 

[bluedude]

Non standard?

So if this is non-standard why does it work when I use the i.WrapAsIntentChooser?

Below works with Tagwriter and puts it in writing mode.

Sub shareContent (shareText As String,shareType As String )

Dim i As Intent
i.Initialize(i.ACTION_SEND, "")
i.SetType("text/plain")
i.PutExtra("android.intent.extra.TEXT", shareText)
'translate
i.WrapAsIntentChooser("Share with")
StartActivity(i)

End Sub

 

[bluedude]

Is there a way to filter just on an app with i.WrapAsIntentChooser("Share with") ?

That would solve my problem too. Because there is no NFC writer library I need to use external apps.

 

[Erel]

The question is whether there is a known action string for NFC writers. I do not know. Try to search for it.

If there is such an action then you can use it instead of setting the component item (which is problematic).

 

[bluedude]

Nope, also because I need to write an URL that I initiate from a listview.

So why does the WrapAsIntentChooser works fine?

 

[Erel]

WrapAsIntentChooser makes the intent ignore the default target and show all apps that can (according to their manifest file) handle the intent.

 

[bluedude]

Bugger, that means I cannot solve the problem. Wondering if it is possible to catch what IntentChooser uses as an activity/intent.

Need to put my NFC product on hold if this cannot be solved, it is all about the user experience.

 

[Hodi]

write NFC Tag directly

Hi Erel, Hi bluedude,


Has everybody found a solution for this problem? I want to start the write function of the Tagwriter directly from my app but I works only by using the Choose variante.

BR
Hodi

 

[joneden]

Hi Guys,

Any progress with this one? Would be nice to be able to integrate into my app...

Regards,

Jon