The camera page blank after the first use

Hi all

I'm having a problem with getting a QR scanner works properly. The weird part is that, after that I scan once, the viewfinder of the camera no longer appears on the screen.

Here is the flow of the page that I currently have:

When the user opens the app first...

1 splash screen

2 splash screen opens automatically the screen of landing page when the user is presented with buttons.

3. the user selects that they would use the QR scanner

4 QR scanner page opens, the camera turns on and appears on the screen of BB.

5 QR code is scanned, decoded, and a results page. (QR page is popped immediately pushes forward the results page)

6. the user presses return and returns to the landing page

7. the user selects the QR button again

8. the user will see a blank screen, but the camera lights.

I'll have to clean up the code before I post. I use the BarcodeScanDemo example in the JDK BB

I think I've figured this out.

I expect that the QRPage would have pushed first when I ran this code:

UiApplication.getUiApplication () .pushScreen (new QRPage());

But really what was going on, it was that inside the QRPage I also called pushScreen method. These screens have been rushed first and when finally returned to new QRPage() call, it was pushed on top of all the other screens.

Tags: BlackBerry Developers

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