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Android development environment

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you need JDK6

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JDK7 will work but is not fully supported by Android

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download and install the Android Tools ADT Bundle

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latest Android platform

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Eclipse + ADT Plugin

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latest system image for emulator

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run and debug applications

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additional development tools

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link: http://developer.android.com/sdk/index.html; Android SDK with Eclipse and ADT Bundle; Current standard development environment for Android apps

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link: http://developer.android.com/sdk/installing/studio.html; Android Studio; Google's solution for Android development

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HelloWorld application

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click icon, see white screen that says "Hello World"

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Eclipse

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create new project

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Android Application project

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HelloAndroid

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package name: course.examples.hellowandroid

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next, next

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onCreate() is run first

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Android Virtual Device Manager

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create a GalaxyNexus

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click on machine and choose start, then the emulator

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benefits of emulator

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cheaper

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you can configure hardware characteristics

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won't damage the device

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negatives of emulator

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quite slow

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no support for blue tooth or connecting USB connections

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it's not an actual device so can't test everything

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advanced features of emulators

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network speed/latencies

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battery power

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mock location coordinates

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terminal window

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emulator

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emulators slower edge network with network speed edge

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then change back to 3G: network speed full

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lower battery: power capacity 5

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unplug the emulator: power status not-charging

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open up maps, it thinks it is near Washington DC

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then sends geo fix 0.00 40.00 now in beach in Spain

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emulate incoming SMS: sms send 3015557777 "this is a test message"

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allows two emulators to interact with each other

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dials second with first

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dials the port number 5554

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debugger

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application that has a bug

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sets breakpoint

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right click project, debug as, android application

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breakpoint line highlighted

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steps through

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help most when you have a good idea where the error is being caused

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monitoring tools in DDMS (Dalvik Debug Monitor Service)

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file explorer

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files on file system of device

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logcat view

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either system or custom

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trace view

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traces the methods that your application calls

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debugs to break point

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open DDMS viw

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click on start profiling

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resume application

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let app run

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stop profiling

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trace view shows each method calls sequne and duration

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profil and timeline views

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UI Hierarchy Viewer

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shows the runtime organization of the user interface

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runs application