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Tackling Android Fragmentation Dev:Mobile Inmeta consulting 16 klocs – not rocket science.

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Presentation on theme: "Tackling Android Fragmentation Dev:Mobile Inmeta consulting 16 klocs – not rocket science."— Presentation transcript:

1 Tackling Android Fragmentation Dev:Mobile Inmeta consulting 16 klocs – not rocket science

2 Source: Twitter /

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7 HTC 3G SLIDE On sale May 2010 Got Gingerbread May 2011 X

8 Android ICS 7.3% (All versions) Honeycomb 2.7% Gingerbread (2.3) 65% Froyo (2.2) still at 19.1 % As of February 2012 Phones with no ICS upgrade plan still sold This will continue iOS 61% on iOS 5 or above in 15. days! Source:

9 WHO CARES?

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12 «Prove that it is feasable, and not overly difficult to, write single APK, native android apps that works well across android versions and form factors»

13 ICS/ Honeycomb tabs ActionBar & Home Navigation Action Items ViewPager https://play.google.com/store/apps/details?id=com.glennbech.nutrinfo

14 Contextual Actionbar https://play.google.com/store/apps/details?id=com.glennbech.nutrinfo Tab Navigation … with ListView multiselect

15 https://play.google.com/store/apps/details?id=com.glennbech.nutrinfo

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17 Android ICS 7.3% (All versions) Honeycomb 2.7% Gingerbread (2.3) 65% Froyo (2.2) still at 19.1 % As of February 2012 Phones with no ICS upgrade plan still sold This will continue iOS 61% on iOS 5 or above in 15. days! Source:

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19 public class TargetSDKVersionExample extends Activity { public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); public boolean onCreateOptionsMenu(Menu menu) { MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.menu, menu); return true; }

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21 ICS Gingrerbread

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23 ICS Gingrerbread

24 Official Android 3 & 4 features backported Very simple to use; download using SDK manager and include JAR file in project Includes Fragment API & DialogFragment Loader API ViewPager, Pager Adapter & FragmentPagerAdapter SearchView Simple Actionbar implementation provided in samples source:

25 No action bar Code «infection» Cannot extend MapActivity since you have to extends custom Activity class

26 Written by Jake Whorton Easy to use (git clone) Includes & based on support libraries Elaborate. Support for wide range of Honeycomb and ICS features Actionbar Navigation Modes, Tabs and spinners in the action bar. Contextual Action Bar / ActionMode The ICS feature "split action bar“ Plugin for MapActvity (!) Apache License Version 2.0

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30 We have used the support libraries, through ActionBarSherlock to get ICS looking apps on pre-ICS phones (back to 1.6 supported) The price Must use a custom theme Must extends SherlockActivity classes Must use overloaded methods, and use getSuppportMenuInflater() etc.

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32 WHAT Introduced in Android 3.0 Reusable UI components Have their own lifecycle Can add their own items to actionbar etc. WHY Code Reuse Fragments are integrated into the ICS SDK

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34 Actionbar uses TabListeners for tab navigation onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) Source:

35 Declared in layout Added/removed from code using FragmentManager

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38 HTC Sensation Button (100dpx 100dp)

39 Samsung Galaxy Tab 10.1

40 Huawei IDEOS

41 xlarge screens are at least 960dp x 720dp. large screens are at least 640dp x 480dp. normal screens are at least 470dp x 320dp. small screens are at least 426dp x 320dp

42 Excellent support for providing resources based on device configuration Versions mcc310- mnc004 (US/Verizon) Car/desk (docking) Night mode ETC Source:

43 Provide differnet layout for different screens and orientations - backed by the same activity Provide a different Activity class for a different device/layout. Example one for phone and one for tablet

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45 Dispatch Activity (condition) Phone Activity Tablet Activity Intent New Intent

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47 The Android OS and devices are both forward- and backwards compatible in regard to OS versions Android has excellent support for layout on devices with different screen sizes and densities By using the ActionbarSherlock/Fragment activities you can write code that use fragments and deploy on tablets and phones By using ActionbarSherlock you can get the «ICS look» on your Android 1.X + devices today. Including the kindle fire.

48 “I am an old man and have known a great many troubles, but most of them never happened” – Mark Twain


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