GRRRR: calls _UNBOUND_ broken in BB10.2 as well

I can't believe how much the BlackBerry OS 10.2 broken call framework. Several of my related calls have been broken when released 10.2.0.424, but I thought I had everything working again by the way of using InvokeQuery for InvokeManager/InvokeRequest , but I just noticed that one of my independent calls doesn't work now either.

My allows app users share a web page title and the URL with essentially the same list to invoke targets as does the BlackBerry browser (i.e. BBM, text, email, NFC, etc.). Under BB10.0 and 10.1, it worked perfectly, but now I noticed that with 10.2 sharing a picker page shows no candidate targets. This is how my app it was:

    InvokeQuery* shareQuery = InvokeQuery::create().parent( this ).invokeActionId( "bb.action.SHARE" ).uri( "http://dummy" );
    this->shareAction = InvokeActionItem::create( shareQuery ).imageSource( QUrl( "asset:///images/action-share.png" ) ).title( tr( "Share Article" ) );
    success = QObject::connect( this->shareAction, SIGNAL(triggered()), this, SLOT(shareActionTriggeredHandler()) );
    ASSERT( success );
    this->addAction( this->shareAction, ActionBarPlacement::InOverflow );

.. .and the shareActionTriggeredHandler() slot looks like this:

void MyApp::shareActionTriggeredHandler() {
    QVariantMap metadata;
    metadata["subject"] = ;
    metadata["description"] = ;
    this->shareAction->setMetadata( metadata );
}

As I said, it worked correctly until BB10.2. When triggered, it used to show a long list of share targets, including all my email accounts, Remember, BBM, NFC, text, etc., but now share watch selection page just an empty list.

Based on the reviews of a BlackBerry Development Advisor, it was determined that the culprit for the broken consolidated appeals was InvokeQuery, so I changed using the method of InvokeManager/InvokeRequest . To make things much easier to use, I have developed (and published on this forum) a Summoner class all wrapped carefully and included a Builder to allow use it even simpler. This worked very well for related calls, so I tried to change my independent invocation to use:

    ActionItem* shareAction = ActionItem::create().imageSource( QUrl( "asset:///images/action-share.png" ) ).title( tr( "Share Article" ) );
    success = QObject::connect( shareAction, SIGNAL(triggered()), this, SLOT(shareActionTriggeredHandler()) );
    ASSERT( success );
    actionSet->add( shareAction );

.. .and now the slot shareActionTriggeredHandler() looks like this:

void MyApp::shareActionTriggeredHandler() {
    QVariantMap metaData;
    metaData["subject"] = this->label->text();
    metaData["description"] = this->link;

    Invoker invoker;
    invoker.setAction( "bb.action.SHARE" );
    invoker.setMetaData( metaData );
    invoker.setUri( "http://dummy" );
    invoker.invoke();
}

With this code I get plus a list of targets hand empty. Instead, I go straight to the map "compose mail", which is also not what's supposed to happen. Looks independent invocation in BB10.2 is does not meet targets of candidate correctly with invocation.

Does anyone know another way to do an independent invocation that always works as expected under BB10.2?

UPDATE: Finally got right. With slightly modified code, it works in all versions of BB10. When I changed to the 'new' methond invocation I did that:

void MyPage::shareActionTriggeredHandler() {
    QVariantMap metaData;
    metaData["subject"] = ;
    metaData["description"] = ;

    InvokeQuery* shareQuery = InvokeQuery::create().parent( this ).invokeActionId( "bb.action.SHARE" ).uri( "http://dummy" ).metadata( metaData );
    Invocation* invocation = Invocation::create( shareQuery ).parent( this ).onArmed( this, SLOT(shareArmed()) );
}

void MyPage::shareArmed() {
    Invocation* invocation = qobject_cast( sender() );
    invocation->trigger( "bb.action.SHARE" );
    invocation->deleteLater();
}

It works very well with BB10.0 and 10.1, but the call was not past all minus 10.2. It turns out that the deleteLater() was the culprit. It seems that time must be slightly different under 10.2 and it is not safe to call deleteLater() in signal armed() Manager. Do this way works under all versions of operating system:

void MyPage::shareActionTriggeredHandler() {
    bool success;
    Q_UNUSED( success )

    QVariantMap metaData;
    metaData["subject"] = ;
    metaData["description"] = ;

    InvokeQuery* shareQuery = InvokeQuery::create().parent( this ).invokeActionId( "bb.action.SHARE" ).uri( "http://dummy" ).metadata( metaData );
    Invocation* invocation = Invocation::create( shareQuery ).parent( this ).onArmed( this, SLOT(shareArmed()) );
    success = QObject::connect( invocation, SIGNAL(finished()), invocation, SLOT(deleteLater()) );
    Q_ASSERT( success );
}

void MyPage::shareArmed() {
    Invocation* invocation = qobject_cast( sender() );
    invocation->trigger( "bb.action.SHARE" );
}

Notice that now the deleteLater() is run in response to the signal finished() of invocation. I guess that the first way under BB10.2 the invocation has been removed before the Manager of signal armed() had the chance to shoot. Because documents explicitly says that the finished() signal indicates that it is safe to call deleteLater(), it was probably just a fluke that it worked Ok under BB10.0 and 10.1.

Also note that in the second code example above, the armed() signal is attached to the shareArmed() with the clause of generator of onArmed() slot, but finished() signal is attached to with QObject::connect() deleteLater() instead. This is because it is IMPOSSIBLE to do this:

Invocation* invocation = Invocation::create().onFinished( invocation, SLOT(deleteLater()) );

That won't work because the "invocation" in the first parameter of onFinished() does not actually exist until that AFTER this line ends the execution.

Hope the other helps avoid pitfalls, in that I came.

greenmr wrote:

OK, I thought I had resolved, and I did, but only for BB10.2. Using this new method it is now BROKEN on 10.0 and 10.1. Now when I run my application

  • My old method invocation using share triggers Ok on all versions of BB10, but on 10.2, the list of candidates target is empty.
  • Using the new method is restored to the list of targets of the action, BUT...
  • Using the new method invocation fails completely on BB10.0 and 10.1.

I do not know what BlackBerry is playing to with invocations. For such a key service on an OS that insists on the "flow" between applications, invocations is a cesspool of labryinthine. There are at least three ways poorly documented to implement any type of invocation, but each new major OS update breaks the previous working methods. THIS NEEDS TO BE FIXED!

You can't all the wonderful fluid UI BlackBerry 10 If you keep changing the way the most basic element of this navigation works without informing the developers, and if you keep breaking formerly apps work whenever you bump the minor version number. This my BlackBerry, your grip on calls!

greenmr wrote:

OK, I solved it. For some reason, there are different ways to make calls, which is a good thing since when BlackBerry breaks one or more of them there are others that you can try. I rewrote my invocation to use explicit Invocation rather than through InvokeActionItem:

Tags: BlackBerry Developers

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