Tracing on Android touch devices is not as straightforward as on iPads because there is no browser inbuilt console.

There are a few tools to remote debug Webkit browsers. Here we are only going to cover the Android Debug Bridge – adb – which lets you output trace statements to a dos command prompt. To use adb you require:

• The platform tools included in the Android SDK package: http://developer.android.com/sdk/index.html.  Note: the entire package is quite big, it should be enough to just get the platform tools.
• A USB connection to a PC or laptop. Check that your device has USB Debugging enabled: Settings – Applications – Development – USB debugging

To start using adb:

1. Connect the device to the computer and open a DOS prompt and change directory to the platform tools.
2. Type this command and press Enter:
   
   
   
   
3. Type this command and press Enter:
   
   
   
   
4. Type this command and press Enter:
   
   
   
   
5. To start tracing, first clear the log:
   
   
   
   
6. Next, you can issue this command which will filter the browser messages:
   
   

From here on any trace messages will come out on the DOS window:

For more information about the adb interface see http://developer.android.com/guide/developing/tools/adb.html.