appium+python自动化34-获取元素属性

前言

在做断言的时候，我们往往需要先获取目标元素的某些属性值，拿来判断，比如登录后，如何判断登录成功了呢？可以通过登录后获取账号的名称（元素的text属性）来判断。

一、获取text

```
# coding:utf-8
from appium import webdriver
from time import sleep

desired_caps = {
                'platformName': 'Android',
                'deviceName': '127.0.0.1:62001',
                'platformVersion': '4.4.2',
                'appPackage': 'com.baidu.yuedu',
                'appActivity': 'com.baidu.yuedu.splash.SplashActivity',
                'noReset': 'true',
                'resetKeyboard': 'true',
                'unicodeKeyboard': 'true'
                }
driver = webdriver.Remote('http://127.0.0.1:4723/wd/hub', desired_caps)

# 等主页面activity出现
driver.wait_activity(".base.ui.MainActivity", 10)

# 点取消升级
driver.find_element_by_id("com.baidu.yuedu:id/negativeUpgrade").click()

# 获取text
t1 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").text
print(t1)
```

二、tag_name

1.tag_name实质上是获取class属性
```
# 获取tag_name
t2 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").tag_name
print(t2)

```

2.打印结果：android.widget.TextView

三、get_attribute

1.获取content-desc属性，这里注意了，如果content-desc属性为空，那么获取的就是text属性，不为空获取的才是content-desc属性

2.content-desc属性为空,打印结果：书架
```
# content-desc为空，获取的是text
t3 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").get_attribute("name")
print(t3)
```

3.content-desc属性不为空，打印结果：百度阅读
```
# content-desc
t4 = driver.find_element_by_id("com.baidu.yuedu:id/fragment_banner").get_attribute("name")
print t4

```

4.id,calss,text属性获取
```
# id
t5 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").get_attribute("resourceId")
print(t5)

# class
t6 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").get_attribute("className")
print(t6)

# text
t7 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").get_attribute("text")
print(t7)
```

5.其它属性获取，注意这里并不是所有的都可以获取，一些标准的属性是可以获取到的
```
# checkable
t8 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").get_attribute("checkable")
print t8

# clickable
t9 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").get_attribute("clickable")
print t9

```

四、size和location
1.获取size，返回的是字典，如：{'width': 84, 'height': 84}

2.获取location，返回的是字典，如：{'y': 38, 'x': 192}
```
# size
t10 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").size
print t10

# location
t11 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").location
print t11

```

五、参考代码
```
# coding:utf-8
from appium import webdriver

desired_caps = {
                'platformName': 'Android',
                'deviceName': '127.0.0.1:62001',
                'platformVersion': '4.4.2',
                'appPackage': 'com.baidu.yuedu',
                'appActivity': 'com.baidu.yuedu.splash.SplashActivity',
                'noReset': 'true',
                'resetKeyboard': 'true',
                'unicodeKeyboard': 'true'
                }
driver = webdriver.Remote('http://127.0.0.1:4723/wd/hub', desired_caps)

# 等主页面activity出现
driver.wait_activity(".base.ui.MainActivity", 10)

# 点取消升级（版本不要升级了）
driver.find_element_by_id("com.baidu.yuedu:id/negativeUpgrade").click()

# 获取text
t1 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").text
print(t1)

# 获取tag_name
t2 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").tag_name
print(t2)

# content-desc为空，获取的是text
t3 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").get_attribute("name")
print(t3)

# content-desc
t4 = driver.find_element_by_id("com.baidu.yuedu:id/fragment_banner").get_attribute("name")
print t4

# id
t5 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").get_attribute("resourceId")
print(t5)

# class
t6 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").get_attribute("className")
print(t6)

# text
t7 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").get_attribute("text")
print(t7)

# checkable
t8 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").get_attribute("checkable")
print t8

# clickable
t9 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").get_attribute("clickable")
print t9

# size
t10 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").size
print t10

# location
t11 = driver.find_element_by_id("com.baidu.yuedu:id/lefttitle").location
print t11
```