Trying Monkeyrunner

Testing is something we have to do but no one really want to do it. Fortunately, Android provides tool for doing automatic testing called "Monkeyrunner"

I just tried it and it works very well. First, we need to prepare all below files stored in the same folder...
 1. your application .apk file (ex: yourapplication.apk)
 2. your test python script (ex: testing.py)
 3. screen captured folder(ex: screenshot/)

In your test python script file, write down testing script ... Some kind like this one below.

# Imports the monkeyrunner modules used by this program
from com.android.monkeyrunner import MonkeyRunner, MonkeyDevice

# Connects to the current device, returning a MonkeyDevice object
device = MonkeyRunner.waitForConnection()

# Installs the Android package. Notice that this method returns a boolean, so you can test
# to see if the installation worked.
device.installPackage('yourapplication.apk')

# sets a variable with the package's internal name
package = 'your.application.package'

# sets a variable with the name of an Activity in the package
activity = 'your.application.package.MainActivity'

# sets the name of the component to start
runComponent = package + '/' + activity

# Runs the component
device.startActivity(component=runComponent)

#wait 2 sec
MonkeyRunner.sleep(2)

#touch some button
device.touch(65, 215, 'DOWN_AND_UP')

#wait 2 sec
MonkeyRunner.sleep(2)

# Takes a screenshot
result = device.takeSnapshot()

# Writes the screenshot to a file
result.writeToFile('screenshot/shot1.png','png')

Connect your device with your pc and execute testing.py with below shell command ...

     $/usr/local/android-sdk-linux_XXXXX/tools/monkeyrunner testing.py

If everything alright then your will have shot1.png file stored in screenshot folder.