Avoid mistakes, common appium related problems and Solutions

problem 1：

adb No device detected

solve ：

1. Check if the mobile phone driver is installed （win10 The system does not need ）, Go to the official website to download the mobile phone driver or the computer to download the mobile phone assistant to help install the mobile phone driver , After installation, uninstall the phone assistant （ Prevent access to the mobile phone adb Port interference ）
2. Turn on the phone settings , Enter developer options , open USB Debugging function
3. Plug and unplug the phone again USB, Choose to accept debugging , Accept fingerprint verification

problem 2：

adb Installation application prompt permission is not enough

solve ： Some Android phone developer options need to be modified USB debugging

problem 3：

Code error ： No connected Android device found

solve ： Check whether the platform version number is correctly filled in the code

problem 4：

appear class not found such java Stack errors

SWT folder ‘…\lib\location of your Java installation.’ does not exist.Please set ANDROID_SWT to point to the folder containing swt.jar for your platform.
such as ：

solve ： Is basically JDK The correct version is not installed or the configuration of environment variables is confused , The standard environment variable configuration method is as follows
First of all, these two have to have

secondly ,jdk Environment variables can be configured here .

problem 5

Some phones have been running once appium Script , The mobile phone has been installed with ui2 drive , But every time you execute, you will still be prompted whether to install UI2, Pictured
The reason for this problem is , As long as the automation driver is set to UI2 that appium Every time the test script is run, it will be re installed by default UI2 The mobile phone .
To solve this problem, you can refer to the problem 2, Set the relevant permissions , Run it again to see if it will prompt you .
If there is a prompt, you can add another configuration in the configuration item of the code , skip UI2 Installation ：
skipServerInstallation Set to True

This configuration item matches with UI2 The use of , In other words, the configuration item specifies automationName by UiAutomator2

Or use appium1.15 Version above can add this configuration .
Be careful ： If you don't have UI2 Or you want to install it again , Don't add this configuration item

common problem 6

The running code prompt cannot find ADB, Such as

An unknown server-side error occurred while processing the command. Original error: Could not find ‘adb.exe’ in PATH. Please set the ANDROID_HOME environment variable with the Android SDK root directory path.

Check ANDROID_HOME Whether the environment variables are configured correctly , Restart after configuration appium and pycharm Command line and other related tools

Can pass appium-desktop Check whether the environment variables are configured correctly , If configured correctly, you can correctly recall the environment variables you configured in the program .
If you have a blank page here , So I suggest you reconfigure , Or just fill in the corresponding path , then save and restart

problem 7

The runtime code reported an error ：

selenium.common.exceptions.WebDriverException: Message: An unknown server-side error occurred while processing the command. Original error: Could not sign with default certificate. Original error Command ‘‘C:\Program Files\Java\jdk1.8.0_131\bin\java.exe’ -jar ‘C:\Program Files\Appium\resources\app\node_modules\appium\node_modules\appium-adb\jars\sign.jar’ ‘C:\Program Files\Appium\resources\app\node_modules\appium\node_modules\appium-uiautomator2-server\apks\appium-uiautomator2-server-debug-androidTest.apk’ --override’ exited with code 1

The main problem is that the certificate signature is wrong , Guess it's the new version appium With the driver installed , And the old version of appium At this time, the two signature certificates are inconsistent, resulting in authentication errors .
The solution is to appium-desktop Replace it with a new one .
Or get into the device - Application management - Search for appium Relevant procedures , Manually unload and execute the script again
Another explanation is to run appium-server You don't have enough authority , Use the administrator to open appium-server Can solve this problem .

problem 8

Error in execution code

This question is not common , The main problem is the mobile phone operating system

The program cannot be opened automatically appiumsettings, So we can manually turn on appiumsettings service （ The program has no interface , There will be the illusion that it will flash back when it is opened , It's normal ）
Then run the script

If you find this method troublesome , Then we can only update the system or replace the mobile phone ..

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