Professional Android 4 Application Development

CONTENTS
Creating and Using Overlays 546
Creating New Overlays 546
Introducing Projections 547
Drawing on the Overlay Canvas 547
Handling Map Tap Events 548
Adding and Removing Overlays 549
Annotating Where Am I 549
Introducing My Location Overlay 553
Introducing Itemized Overlays and Overlay Items 554
Pinning Views to the Map and Map Positions 556
Mapping Earthquakes Example 558
CHAPTER 14: INVADING THE HOME SCREEN 565
Introducing Home Screen Widgets 566
Creating App Widgets 567
Creating the Widget XML Layout Resource 567
Widget Design Guidelines 567
Supported Widget Views and Layouts 568
Defi ning Your Widget Settings 569
Creating Your Widget Intent Receiver and Adding It to the
Application Manifest 570
Introducing the App Widget Manager and Remote Views 572
Creating and Manipulating Remote Views 572
Applying Remote Views to Running App Widgets 574
Using Remote Views to Add Widget Interactivity 575
Refreshing Your Widgets 577
Using the Minimum Update Rate 577
Using Intents 578
Using Alarms 579
Creating and Using a Widget Confi guration Activity 580
Creating an Earthquake Widget 582
Introducing Collection View Widgets 587
Creating Collection View Widget Layouts 589
Creating the Remote Views Service 591
Creating a Remote Views Factory 591
Populating Collection View Widgets Using a Remote Views Service 594
Adding Interactivity to the Items Within a Collection View Widget 595
Binding Collection View Widgets to Content Providers 596
Refreshing Your Collection View Widgets 598
Creating an Earthquake Collection View Widget 598
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