Math Touch » Uncategorized

Back in business

admin — Wed, 03 Nov 2010 17:25:17 +0000

November 3, 2010

Apple just approved Math Touch 1.0.3, which is up on the store now. I can verify the text fields are being drawn in the correct location on iPad’s, which is the bug I took the app off the store for.

There are two known bugs in this version:

• A memory leak associated with scrolling or zooming a graph, which will cause a crash after a while. (Which happens way faster on the iPad because it uses a lot more memory than the iPhone but has less.)

• A bug in the unit database in which units which resolve to a base dimension are not visible in the list.

I have fixed both of these bugs and am uploading 1.0.4 to Apple as I type. I also incorporated support for the tab key into the unit editor.

I have discontinued sales until…

admin — Mon, 25 Oct 2010 05:38:12 +0000

I got the confirmation from Apple less than an hour ago that version 1.0.2 had been approved for sale, fixing the bugs many users have been reporting with the incorrectly displayed text. However, upon installing it on my iPad, I discovered the problems with the text fields have gotten far worse. I installed it on my iPhone and it worked fine. I was quite dismayed, so I installed my development version on the iPad – the same one I uploaded to Apple – and the text displayed correctly.

Having these errors upsets me greatly, especially considering that these bugs exist in the purchased binaries but not in the ones I send to Apple.

Thus, until I can discover why the app as downloaded from Apple does not function as it does when I send it to them, I have removed the app from the app store.

As an example, I’ve attached screenshots from the version Apple is selling (left) and the way it looks during development & testing (right). Why is the app behaving incorrectly on iPad’s only when coming from Apple? I don’t know. Fixing this is my top priority.

Bugs in version 1.0.1 for iPad

admin — Tue, 12 Oct 2010 14:21:30 +0000

I have been able to confirm from three users that there is a bug in version 1.0.1 which causes text to display vertically along the right edge of a pop-up for a variable. This is obviously not the designed functionality. Although I have been unsuccessful at reproducing this bug on my devices, the fact that three users have experienced it means fixing it is my top priority.

There is also a bug in some iPad OS’s in which Apple snuck Grand Central Dispatch in to the iPad OS in 3.2.2, however, not all of the other functionality of iOS 4 which Math Touch leverages is present. Since Math Touch finds Grand Central Dispatch, it will ask the iPad to perform some other Grand-Central-Dispatch-related, but iOS 4-only functionality which the iPad cannot do, and the result is a crash. I have a partial work-around for this bug and am testing it to ensure completeness.

It may take me several days before the bug fix is uploaded, as I am traveling to my grandfather’s funeral for the next three days.