Question

Possible Duplicate:
Debugging iOS/AIR content on the device

I’m porting my Air app to iPad. I compiled it with:

adt -package -target ipa-ad-hoc -storetype pkcs12 -keystore store.p12 -storepass ****** -provisioning-profile profile.mobileprovision app.ipa app.xml app.swf

App was deployed on device through iTunes. When I launch app on iPad I get a black screen. Looks like some exception is thrown or something like that. How can I see that exception? Or if to be more general, how do you guys debug iOS app on Windows?

Answer 1

As far as my knowledge goes there is no remote debugging with AIR and iOS possible. So you have to revert to creating a scrolling text field somewhere and show log/debug texts there.

Edit: See Debugging iOS/AIR content on the device.

Edit2: Short tutorial video on debugging on iOS via Flash Prof CS5.5: http://www.youtube.com/watch?v=DanNBN89uhs

You can use the uncaughtErrorEvents property (found in your main documents loaderInfo property) to catch any unhandled error and show it also in the text field (see http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/display/LoaderInfo.html#uncaughtErrorEvents)

There is also the possibility to define compiler constants to enclose debug log statements within actionscript so you can easily turn them on and off.

I normally also test first the application on my windows before creating an iPad version of it.

Final tip: remember that only your main swf can contain actionscript.

Edit:

Here is a example, try to add this code before any other actionscript is executed:

import flash.events.UncaughtErrorEvent;
import flash.events.Event;
import flash.text.TextField;
import flash.text.TextFormat;
import flash.text.TextFieldType;

// ...
// textLog contains errors
var textLog: TextField;

// make sure there is a uncaughtErrorEvents property (in case of older player)
if (this.loaderInfo.hasOwnProperty('uncaughtErrorEvents'))
{
  // listen for uncaught error events
  this.loaderInfo['uncaughtErrorEvents'].addEventListener(UncaughtErrorEvent.UNCAUGHT_ERROR, handleUncaughtError);
  // make sure text field stays on top
  this.addEventListener(Event.ENTER_FRAME, handleEnterFrame);
  // create TextField at bottom using 1/5th of stage height
  textLog = new TextField();
  textLog.width = this.stage.stageWidth;
  textLog.height = Math.floor(0.20 * this.stage.stageHeight);
  textLog.y = this.stage.stageHeight - textLog.height;
  textLog.multiline = true;
  textLog.wordWrap = true;
  textLog.defaultTextFormat = new TextFormat('_sans', 10);
  textLog.type = TextFieldType.DYNAMIC;
  textLog.background = true;
  textLog.backgroundColor = 0xCCCCCC;
  this.addChild(textLog);
  textLog.appendText('Catching errors\n');
}

// show error and scroll to bottom line
function handleUncaughtError(anEvent: UncaughtErrorEvent): void
{
  textLog.appendText(anEvent.error + '\n');
  textLog.scrollV = textLog.maxScrollV;
}

// make sure textLog stays on top of all other children
function handleEnterFrame(anEvent: Event): void
{
  if (this.getChildIndex(this.textLog) != this.numChildren - 1)
  {
    this.addChild(this.textLog);
  }
}