Debugging for Android 1 CS440

Debugging for Android  You have three options:  Android Debug Bridge (ADB)  Dalvik Debug Monitor Device (DDMS)  Device or AVD (Android Virtual Device)  Additional static analyzer for Eclipse:  FindBugs CS440 2

Developing for Mobile Devices  Hardware-Imposed Design Considerations:  Low Processing Power  Limiter RAM  Limited permanent storage capacity  Small screens  High costs associated with data transfer  Slow data transfer rates, high latency  Unreliable data connections  Limited battery life CS440 3

Good Practices  Be efficient  Think about memory  Consider small screens, touch screens  Expect low speeds, high latency  Think about cost CS440 4

Developing for Android  Performance  /performance.html  Responsiveness  Application must respond to user action within 5 secs  Broadcast receiver must return from its onReceive handler within 10 secs  Seamlessness  Security CS440 5

What makes an app?  Activities: presentation layer  Services: invisible workers  Content Providers: databases  Intents: message-passing framework  Broadcast receivers: broadcast consumers  Widgets: components added to home screen  Notifications: signal users without interrupting their current activities CS440 6

References  Professional Android 2 Application Development (Wrox Programmer to Programmer) by Reto Meier CS440 7