home screen widgets
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TRANSCRIPT
Recommendation of a Strategy
Intro to Android Home Screen Widgets
So Cal Code CampJan 29 2011
Josh Dobbs
What's a widget?
Music Widgets
Info Widgets
More Widgets
Why build a widget?
Give users information at a glance
Control apps that run in the background
Toggle settings(wifi, ringer, bluetooth, etc)
Give users quick access to core functionality
Need another reason?
Keep your apps in front of your users and they are less likely to forget about them
Design Guidelines
https://docs.google.com/document/d/1xjkCt2V84gQZCDRie1rA0cDKSsYMHinB7TytOuk_dFY/edit?hl=en#
Design Guidelines
3 recommended sizes
Widget frames
Graphic tips
Design Guidelines
Android 1.6 (Donut)White Theme
Android 2.2 (Froyo)Dark theme
Simple WebCam Viewer Widget
Android 1.6 (Donut)White Theme
Android 2.2 (Froyo)Dark theme
four things needed to add a widget to your app
AppWidgetProvider(xml)
WidgetLayout(xml)
AppWidgetProvider Implementation(java)
Update the manifest
Tells the Android OS that your app has a widget
dip?
!=
What's a dip
Dip = density independent pixel
one dip is 1 pixel on a 160 dpi screen(ex screen size 240 x 320 1.5 x 2 inches is approx 1 dip = 1 pixel
AppWidgetProvider
Widgets are remote views(not applications)
How do widgets get updated?
The app that supplies the UI for the widget is a broadcast receiver
What does a widget receive?
intents(pending intents) that are sent by sendBroadcast
Four main intents
ACTION_APPWIDGET_UPDATE
ACTION_APPWIDGET_DELETED
ACTION_APPWIDGET_ENABLED
ACTION_APPWIDGET_DISABLED
Thank You
Josh Dobbshttp://[email protected]