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POTwo activities with NFC foreground dispatch issue
 

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  1. POTwo activities with NFC foreground dispatch issue
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    <p>I have two activities A and B. A always starts before B and B uses the dialog theme (this is required and important). Both use the NFC foreground dispatch mechanism, which works pretty well. However, when the orientation changes there is an issue. I enable and disable the foreground dispatch in the onResume and onPause methods, as I should.</p> <p>What happens:</p> <ul> <li>A launches, A onResume gets called</li> <li>A onPause, B launches, B onResume gets called (everything as expected and it works)</li> <li>Orientation change</li> <li>B onPause gets called, B launches again, B onResume gets called, A launches in the background again, A onResume gets called, A onPause gets called</li> </ul> <p>--> Now B's foreground dispatch doesn't work anymore.</p> <p>B's dialog theme is causing this issue as everything works well with a normal theme. Is there a workaround?</p> <p><strong>Solution:</strong></p> <p>Thanks for the comments, but I found a workaround, which helps. In the onCreate method of activity B I do the following:</p> <pre><code> /* * This workaround is needed as this activity uses the dialog theme. When the background activity uses the foreground * dispatch as well, then it breaks this activity's foreground dispatch on an orientation change. */ mCancelButton.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() { @Override public void onGlobalLayout() { NfcForegroundDispatch.setupForegroundDispatch(NfcDetectorActivity.this); } }); </code></pre> <p>As I've said, it's a workaround not a solution.</p>
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    1. PTQuestion
    1. USvRallev
    1. USvRallev
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    1. COAny idea about read NFC tag while phone is Locked?
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      1. POTwo activities with NFC foreground dispatch issue
      1. USVenky
    2. CONFC hardware is disabled when the phone keyboard lock is enabled
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      1. POTwo activities with NFC foreground dispatch issue
      1. USThomasRS
    3. COot really an answer to your question but couldn't you just lock the applications into one orientation?
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      1. POTwo activities with NFC foreground dispatch issue
      1. USPeanut
 

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