Android display resolution

Forum|Forum|12 years ago
September 16, 2013
2 replies
4606 views

When building an AIR app for iOS, inside of the (app.xml) file there is a section for <iPhone>

Inside the iPhone section is a <requestedDisplayResolution>

I understand what this feature does and I am able to use it correctly... but my question is... Is there anything like this for Android?

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zeh

Inspiring

I don't see a need for this on Android. The high/normal moniker is a poor way to denote density, and the parameter is there just as a quick way to support old apps on the high density displays. Adding this would only cause confusion and a doubtful improvement. This is gonna bite Apple's in the ass in the future if they ever want to add a different pixel density since they'll just keep on adding magical keywords.

On Android you read the display pixel density by reading Capabilities.screenDPI (since displays can have any number of different pixel densities). Then based on this you can decide what to do (load higher res image, whatever).

If you want to have the same behavior on Android as the "high" parameter on iOS, you can just read the pixel density on your app's startup and resize your main app container Sprite scaleX and scaleY as desired. That way you won't have to take the current size into consideration anywhere else.

P

phonefusionryanAuthor

Inspiring

Thanks for your comments

Sadly I am porting a very large previously existing Desktop AIR application that uses many bitmaps instead of vector.

The reason I was hoping for a simple Android solution similar to the iOS one, is that my client simply does not have the budget for the time it would require me to go

redo all every section/feature to scale up, simply because this was pitched as "Now AIR can be compiled iOS and Android!"... and it does... just I didnt know it requires redoing stuff for Android only.

zeh

Inspiring

But it doesn't require you redoing anything. The same issues you'd having porting a "normal" iOS app to a "high resolution" iOS app are the issues you'd have with supporting other Android pixel densities. You'll scale the Bitmaps up.

If you want to solve this quickly, just resize your main container, or use stage scale modes like Colin suggested. This will have the same effect as running an old iOS app on a new iOS device. You may need to search for references to stageWidth or stageHeight on the app to make sure it's not trying to be clever, but you won't have to touch the content or recreate bitmaps or whatever.

That tag is not magic. It's there to make scaling the content faster. But the same can be accomplished by a couple of lines on Android or other platforms.