device=MonkeyRunner.waitForConnection() //手机连接
result = device.takeSnapshot() //截图
result.writeToFile("d:\dialer.png","png") //保存在d盘 命名为dialer.png
hui=result.getSubImage((200,400,200,400)) //截取(200,400,200,400)这么大的内容
picture = MonkeyRunner.loadImageFromFile('d:\shotbegin.png','png') //与shotbegin.png这个图片对比
hui1=picture.getSubImage((200,400,200,400))
ggg=hui.sameAs(hui1,1.0) //对比
print ggg //相同返回true不同返回false