4、MonkeyImage類
MonkeyImage類在測試過程中用來保存各種格式的測試截圖，并可以進(jìn)行圖像對比
convertToBytes(string format)            轉(zhuǎn)換圖像格式
getRawPixel(integer x, integer y)        獲取當(dāng)前坐標(biāo)像素元組
getRawPixelInt(integer x, integer y)     獲取當(dāng)前坐標(biāo)像素值
getSubImage(tuple rect)                  截取子圖像
sameAs(MonkeyImage other, float percent) 圖像對比
writeToFile(string path, string format)  保存圖像文件

常用方法：
takeSnapshot()                           進(jìn)行屏幕截圖
writeToFile(string path, string format)  保存圖像文件


綜合舉例：
連接設(shè)備，自動(dòng)安裝并啟動(dòng)考研幫app，
輸入賬戶(zxw123/zxw123)登錄，然后截圖保存


from com.android.monkeyrunner import MonkeyRunner as mr
from com.android.monkeyrunner import MonkeyDevice as md
from com.android.monkeyrunner import MonkeyImage as mi

print("connect device")
device = mr.waitForConnection(1,'127.0.0.1:62001')

print("install app")
device.installPackage(r"C:\Users\chawey\Desktop\kaoyanbang.opdown.com.apk")
mr.sleep(5)

print("launch app")
packageName = 'com.tal.kaoyan'
activity = 'com.tal.kaoyan.ui.activity.SplashActivity'
component = packageName+'/'+activity

device.startActivity(component=component)
mr.sleep(5)


print("touch cancel update button")
device.touch(618,895,'DOWN_AND_UP')
mr.sleep(2)

print("touch skip button")
device.touch(804,67,'DOWN_AND_UP')
mr.sleep(2)

print("input username and password")
device.touch(57,373,'DOWN_AND_UP')
mr.sleep(2)
device.type("zxw123")

device.touch(152,480,'DOWN_AND_UP')
mr.sleep(2)
device.type("zxw123")


print("take screenshot")
screenshot = device.takeSnapshot()
screenshot.writeToFile(r"D:\monkeyrunner\kyb.png","png")