By Mike Wolfson@mikewolfson

Test and Debug with Android Dev Tools

San Francisco, CA March 8, 2011

Session Overview

• Emulator• DDMS• ADB• Hierarchy Viewer• Other important tools

Why are we here?

Fit and Finish

• What it is• Capabilities• Limitations• SDK and AVD Manager

Emulator - control

• What’s an Android Virtual Device?• Creating Custom AVDs–Using Skins

• Speed it up–Disable boot & other animation–Leave it up–Honeycomb – change RAM to 1GB

• Using “Snapshot” to save emulator state

Emulator - AVDs

• Hacking the emulator–Scale factor (0.1 – 3)–File system access (\.android\avd)–Accessing the Market• http://developer.htc.com/google-io-

device.html#s3

Emulator - AVDs

Emulator - control

• Key Commands: emulator –help-keys–Switch orientation: • Cntrl-F12; KEYPAD_9; Ctrl+Cmd+F11

–Home: Home; Back: Esc–Call\Dial: F3–Camera: Ctrl-KEYPAD_5–Fullscreen Toggle: Alt-Enter

• How DDMS Works• Starting DDMS–From Eclipse–From Command Line

• Devices• Tip: File>Preferences

DDMS – Dalvik Debug Monitor Service

• Logcat–Different Levels–Viewing from DDMS–Controlling from command line

• Tip– final static boolean DEBUG_MODE = false;

if (DEBUG_MODE) Log.i(LOG_TAG,"Load level: " + mLevel);

DDMS – Logs and output

• V- Verbose• D- Debug• I – Info• W – Warning• E- Error• F- Fatal• S- Silent

DDMS – Logcat settings

•Memory–View Heap Usage–Tracking memory allocation

• Threads•Garbage Collection

DDMS – Memory and File Explorer

• Simulate Events–Telephony (Status & Actions)–Location•Capture screen images• File Explorer

DDMS – Simulating Events & Extras

• What it is• Command control of device–adb devices–adb -s emulator-5556 install

helloWorld.apk–adb install c:\myapp\app.apk

ADB – Android Device Bridge

• Emulator• Device–Install USB Driver• http://developer.android.com/sdk/oem-

usb.html–On Device: Applications > Development,

then enable USB debugging.

ADB – Debugging

• Using the app• Run on emulator–Run on device

• Settings

Dev Tools App

•What it is• How to run• Layout View• Pixel Perfect View• Alternative: layoutopt tool

Hierarchy Viewer

• Control via scripts• Test\control multiple devices at once• Functional and regression testing• The API• Running it

Monkey Runner

Other Tools

• Traceview• Proguard• MonkeyRunner• Command Line

Conclusion

Performance problems are bugs. Find them quickly

and easily – and fix them!

Confused? Questions?

@mikewolfson