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Mattias Isegran Bergander
Works at Consat Telematics
Attended Chalmers University of Technology
399 followers|382,547 views


Including proguard rules in published libraries, great! Next must have in all 3rd party libraries, I hope.
#anddev #androiddev
Google Play services Split AARs now includes ProGuard rules
One of my favorite features in Google Play services 7.0 [1] as a developer is that the split AARs (i.e., play-services-gcm or play-services-wearable - see the full list [2]) now include the ProGuard exceptions needed. This means that there's no need to manually add ProGuard exceptions. This makes it that much easier to get started with Google Play services and one less thing for you to maintain going forward.

Want to do the same for your library? Use the consumerProguardFiles gradle DSL:
release {
    consumerProguardFiles 'proguard-rules.txt'
to embeds the given file(s) as 'proguard.txt' in the AAR. Those ProGuard exceptions then automatically get applied when an app sets minifyEnabled to true.

Note: this does not apply to the full play-services or play-services-all-wear AARs - only the granular AARs have this built in.

[1] -
[2] -

#AndroidDev   #googleplayservices   #gradle  
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Reminder as the Nexus 6 Android 5.1 OTA zip is out:
1. Computer: adb reboot recovery
2. Phone: Hold power, press volume up once
3. Phone: Apply update from adb in menu
4. Computer: adb sideload

#android   #nexus6  
Fredrik Duprez's profile photo
Check på den - gjorde precis samma sak.
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Material design in combination with Android 5+ APIs for shared element transitions etc (4.4 stuff was nice too) makes it way too much fun to program and experiment with app animations... Even for a non-designer. The hard part is cutting it down to mostly useful animations and balance the ones for delight. The best technical trick though? Easy and simple, increase the animation times and watch it in slow motion. You will discover stuff.

#anddev   #androiddev   #anddesign   #androiddesign
Tony Owen's profile photoMattias Isegran Bergander's profile photo
Maybe. It's easy to get stuck solving/exploring non-essential(?) things. Though there is that "delight" feel which is [no reference needed?] especially obvious/important/selling point now in the beginning.
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Todays android dev tip:

Drawables are cached and if you tint (#setColorFilter) one drawable all instances, including future and past ones, fetched or referenced by resource id in a layout will be tinted too. Use mutate() to get your own non-cached copy.

#anddev   #android   #androiddev  
Hugo Visser's profile photoMattias Isegran Bergander's profile photo
Indeed, same here +Hugo Visser  . I recon that will happen more and more as tinting dynamically with material design, and Palette stuff gets more common. 
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The mobile game Clash of Clans is rather addicting and I enjoy it, but regardless if you like it or not, this commercial was pretty ... "woha!".
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And so it begins... Prepare for your new overlords
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So a youtube clip exceeded a signed(!) 32bit value for the number of views, forcing youtube to update. :)
We never thought a video would be watched in numbers greater than a 32-bit integer (=2,147,483,647 views), but that was before we met PSY. "Gangnam Style" has been viewed so many times we have to upgrade!

Hover over the counter in PSY's video to see a little math magic and stay tuned for bigger and bigger numbers on YouTube. 
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Have him in circles
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Automatic translation of App's promo text... So much this. Just had this problem at work with Swedish myself. "... route tool..." translated to the equivalent of "...rotten tool"...
So on the topic of translating your Play Store listing: the promo text is auto translated if you don't localise it yourself, which often leads to funny app descriptions. In this case the translation of "no root requires" yields  "no carrot required" in Dutch. 

Depending on de weirdness of the auto translation it might be worthwhile to add translations to your store listing yourself.

My personal preference would be if the Play Store would either auto translate everything or nothing at all. There's a toggle for translating the main description and it would make sense to only translate the promo text if that option is selected as well.
#gde   #android   #playstore  
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More on shared transitions in android. Great stuff.
#androiddev #anddev
New blog post: Postponed Shared Element Transitions (part 3b)

 I've written about postponed shared element transitions on Google+ before, but this post goes into a bit more detail.

If you have any questions and/or suggestions, let me know in the comments. And thanks in advance to anyone who +1/reshares the post... really appreciate you all helping me get the word out! :)

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Easy security checkup for your Google stuff, with a 2GB extra drive space bonus if you do it.
Though my google logins from my Nexus 6 shows up as from a Nexus One, unless from the browser on the phone, then it correctly says Nexus 6. Had me start looking for my Nexus One...
Just do it!
Two gig storage as reward, but most important, better security.
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Time to look into Kotlin more seriously? Excellent quick overview for android (and java) developers.
#androiddev   #anddev   #programminglanguages   #programming  
Using Project Kotlin for Android

I've been watching and playing with Kotlin for about two years now. It's gotten to the point where I think it's really viable for Android app development. I decided to take a few nights and dig into a bunch of details about the language and why it's a good candidate.

This is a slightly modified copy of a document I presented internally at Square. We're not going to turn around and write everything in Kotlin. That wouldn't make sense. This was a sell on the language, features, and its implementation such that we can start experimenting.

Since I'm not interested in hearing people yell things that I already know about their favorite non-Java languages, comments are off and closed on this post. I've used Groovy and Scala a bunch, but thanks. I haven't used Xtend or Ceylon at all (hence their omission). If you're interested in discussing those, make your own post.

#AndroidDev #Kotlin #NotScala
Using Project Kotlin for AndroidUsing Project Kotlin for Android Statically-typed, highly-interoperable augmentation to the Java language. Author: Created: 2015-01-20 Updated: 2015-01-26 Table of Contents Introduction Features Interoperability Lambas Null Safety Extension Methods Data Classes Other Awesome...
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Bought and donated, it/he is just that good. A highly recommended Launcher replacement for your android phone. Supports Google Now etc and everything you like from the standard launcher and improves it, a lot.

#android   #androidapps  
Introducing Action Launcher 3

An entirely new take on Action Launcher. This release is both a complete re-write and and re-design. It takes everything people really loved about Action Launcher in the past, mixes it with Google Now Launcher, and infuses it with Material Design.

The Quickdrawer, Covers and Shutters are all better than ever. And the new Quicktheme feature, which extracts the colors from your wallpaper so you can theme items on your layout, adds a whole new category of customization.

The update is currently rolling out to the Play Store now!
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Chris Lacy's profile photo
Many thanks for the support :)
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MSc CS&E, System Architect/Developer
  • Consat Telematics
    MSc CS&E, System Architect/Developer, 2009 - present
  • Consat Engineering
    2005 - 2009
  • Pilotfish Networks
    1999 - 2005
Basic Information
Other names
Apps with Google+ Sign-in
Programmer by day & night and the family in between!
A runner and a computer and programming geek, currently mostly Java, Android, C++, C#, ... Black belt 2 Dan martial arts (Bujinkan). Trail ultra-marathon 45km finisher.

My own Android apps:
  • Timer Flow -One timer leads to the next, can repeat groups of them, for workouts etc
  • Yoga Timer -Specialized yoga version of Timer Flow
  • House alarm -Home alarm remote for certain home alarm models
Android apps in development:
  • Unannounced "secret" RTS Game
Bragging rights
2 Dan Bujinkan black belt. Committed code to Java 6. Best customer praise about delivered software: "Euphoric chock". Was in the Robocode top 3. Trail ultra-marathon 45k finisher.
  • Chalmers University of Technology
    M.Sc. Computer Science & Engineering, 1996 - 2000
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