I found the way to delete text that has been entered inside Edittext. Here is the code ...
# Max text length
fieldLength = 100
# Select all the chars on the right
dev.press('KEYCODE_SHIFT_RIGHT', MonkeyDevice.DOWN)
for i in range(fieldLength):
dev.press('KEYCODE_DPAD_RIGHT', MonkeyDevice.DOWN_AND_UP)
#MonkeyRunner.sleep(1)
dev.press('KEYCODE_SHIFT_RIGHT', MonkeyDevice.UP)
# Delete them
dev.press('KEYCODE_DEL', MonkeyDevice.DOWN_AND_UP)
# Select all the chars on the left
dev.press('KEYCODE_SHIFT_LEFT', MonkeyDevice.DOWN)
for i in range(fieldLength):
dev.press('KEYCODE_DPAD_LEFT', MonkeyDevice.DOWN_AND_UP)
#MonkeyRunner.sleep(1)
dev.press('KEYCODE_SHIFT_LEFT', MonkeyDevice.UP)
# Delete them
dev.press('KEYCODE_DEL', MonkeyDevice.DOWN_AND_UP)
By running above script, it will select text and drag to the right then delete it. Afterthat it will select text and drag to the left and delete to make sure all text is clear.
Hope it helps...