title: The method "device.press" or "device.touch" of MonkeyRunner doesn't take effect
body: <p>I want to use monkeyrunner to test my MainActivity,and I have edit a python file like below:</p>
  
  <pre><code>    from com.android.monkeyrunner import MonkeyRunner, MonkeyDevice
      device = MonkeyRunner.waitForConnection(10)
      device.press('KEYCODE_DPAD_DOWN')
      device.press('KEYCODE_DPAD_CENTER')
      device.touch(10,100, 'DOWN_AND_UP')
      device.touch(200,200, 'DOWN_AND_UP')
      result = device.takeSnapshot()
      result.writeToFile('shot2.png','png')
  </code></pre>
  
  <p>And then I open up my app and use the command of "monkeyrunner monkeyrunnerprogram2.py",but the monkey runner can do nothing except takesnapshot().It doesnot do anything above. <br>
  So is there anyway to solve the problem?</p>