monkeyrunner只执行截图，未执行按键的问题

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在网上查找monkeyrunner的用法，抄了一段代码如下：

 1 # Imports the monkeyrunner modules used by this program 2   3  from com.android.monkeyrunner import MonkeyRunner, MonkeyDevice, MonkeyImage 4  5 # Connects to the current device, returning a MonkeyDevice object 6  7 device = MonkeyRunner.waitForConnection() 8  9 # Takes a screenshot10 11 result = device.takeSnapshot()12 13 # Writes the screenshot to a file14 15 result.writeToFile('./shotbegin.png','png')16 17 # Presses the Down button18 19 device.press('KEYCODE_DPAD_DOWN','DOWN_AND_UP')20 21 device.press('KEYCODE_DPAD_DOWN','DOWN_AND_UP')22 23 device.press('KEYCODE_DPAD_DOWN','DOWN_AND_UP')24 25 device.press('KEYCODE_DPAD_DOWN','DOWN_AND_UP')26 27 device.press('KEYCODE_DPAD_DOWN','DOWN_AND_UP')28 29 # Takes a screenshot30 31 result = device.takeSnapshot()32 33 # Writes the screenshot to a file34 35 result.writeToFile('./shotend.png','png')

原地址：http://www.cnblogs.com/yyangblog/archive/2011/03/10/1980086.html

运行时未报错，开头和结尾的截图执行成功，但中间的按键未执行。请教了同事，原来是因为时间太短，第一次截图未完立即发送按键指令。加入等待后运行正常。完整代码如下：

#encoding utf-8

from com.android.monkeyrunner import MonkeyRunner, MonkeyDevice, MonkeyImage
import time

device=MonkeyRunner.waitForConnection()
device.installPackage("../samples/android-14/ApiDemos/bin/ApiDemos.apk")
device.startActivity(component='com.example.android.apis/.ApiDemos')
result=device.takeSnapshot()
result.writeToFile('./snapshotbegin.png','png')

time.sleep(5)

device.press('KEYCODE_DPAD_DOWN','DOWN_AND_UP')
time.sleep(1)
device.press('KEYCODE_DPAD_DOWN','DOWN_AND_UP')
time.sleep(1)
device.press('KEYCODE_DPAD_DOWN','DOWN_AND_UP')
time.sleep(1)
device.press('KEYCODE_DPAD_DOWN','DOWN_AND_UP')
time.sleep(1)
device.press('KEYCODE_DPAD_DOWN','DOWN_AND_UP')
time.sleep(1)

result=device.takeSnapshot()
result.writeToFile('./snapshotend.png','png')

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刚刚知道monkeyrunner自带sleep函数，所以上面程序不需要import time了，time.sleep()可以换成MonkeyRunner.sleep()

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