本文主要是介绍UIautomator2提示需强制重启的解决方案，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
UIautomator2提示需强制重启的解决方案
UIautomator2测试的时候，一旦和device端断连，就需要手动重启UIautomator2才能继续测试。本文提供在这种情况下的解决方案。
UIautomator是google原生的自动化测试工具，由于只支持java，所以后面推出了支持python语言的UIautomator2。
UIautomator2测试环境，需要在device端安装一个atx应用，用于和PC端通讯。
在某些情况，比如手机重启，或者usb插拔，UIautomator2的测试没法进行了，提示如下错误：
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Traceback (most recent call last):File "/home/ldeng/code/PythonProjects/DLTest/venv/lib/python3.10/site-packages/uiautomator2/__init__.py", line 486, in _jsonrpc_retry_callreturn self._jsonrpc_call(*args, **kwargs)File "/home/ldeng/code/PythonProjects/DLTest/venv/lib/python3.10/site-packages/uiautomator2/__init__.py", line 556, in _jsonrpc_callraise err
uiautomator2.exceptions.UiAutomationNotConnectedError: ({'code': -32001, 'message': 'java.lang.IllegalStateException', 'data': 'java.lang.IllegalStateException: UiAutomation not connected, UiAutomation@7e49b9d[id=-1, flags=0]\n\tat android.app.UiAutomation.throwIfNotConnectedLocked(UiAutomation.java:1239)\n\tat android.app.UiAutomation.waitForIdle(UiAutomation.java:800)\n\tat androidx.test.uiautomator.QueryController.waitForIdle(QueryController.java:532)\n\tat androidx.test.uiautomator.QueryController.waitForIdle(QueryController.java:523)\n\tat androidx.test.uiautomator.UiDevice.waitForIdle(UiDevice.java:621)\n\tat androidx.test.uiautomator.UiDevice.pressRecentApps(UiDevice.java:488)\n\tat com.github.uiautomator.stub.AutomatorServiceImpl.pressKey(AutomatorServiceImpl.java:558)\n\tat java.lang.reflect.Method.invoke(Native Method)\n\tat com.googlecode.jsonrpc4j.JsonRpcBasicServer.invoke(JsonRpcBasicServer.java:467)\n\tat com.googlecode.jsonrpc4j.JsonRpcBasicServer.handleObject(JsonRpcBasicServer.java:352)\n\tat com.googlecode.jsonrpc4j.JsonRpcBasicServer.handleJsonNodeRequest(JsonRpcBasicServer.java:283)\n\tat com.googlecode.jsonrpc4j.JsonRpcBasicServer.handleRequest(JsonRpcBasicServer.java:251)\n\tat com.github.uiautomator.stub.AutomatorHttpServer.serve(AutomatorHttpServer.java:100)\n\tat fi.iki.elonen.NanoHTTPD.serve(NanoHTTPD.java:2244)\n\tat fi.iki.elonen.NanoHTTPD$HTTPSession.execute(NanoHTTPD.java:945)\n\tat fi.iki.elonen.NanoHTTPD$ClientHandler.run(NanoHTTPD.java:192)\n\tat java.lang.Thread.run(Thread.java:923)\n'}, 'pressKey')During handling of the above exception, another exception occurred:Traceback (most recent call last):File "/home/ldeng/code/PythonProjects/DLTest/OtaTest.py", line 27, in setUpdevice_utils.clear_all_tasks(self.device)File "/home/ldeng/code/PythonProjects/DLTest/utils/device_utils.py", line 78, in clear_all_tasksdevice.press("recent")File "/home/ldeng/code/PythonProjects/DLTest/venv/lib/python3.10/site-packages/uiautomator2/__init__.py", line 1164, in pressreturn self.jsonrpc.pressKey(key)File "/home/ldeng/code/PythonProjects/DLTest/venv/lib/python3.10/site-packages/uiautomator2/__init__.py", line 479, in __call__return self.server._jsonrpc_retry_call(self.method, params,File "/home/ldeng/code/PythonProjects/DLTest/venv/lib/python3.10/site-packages/uiautomator2/__init__.py", line 488, in _jsonrpc_retry_callself.reset_uiautomator(str(e)) # uiautomator可能出问题了，强制重启一下File "/home/ldeng/code/PythonProjects/DLTest/venv/lib/python3.10/site-packages/uiautomator2/__init__.py", line 640, in reset_uiautomatorok = self._force_reset_uiautomator_v2(File "/home/ldeng/code/PythonProjects/DLTest/venv/lib/python3.10/site-packages/uiautomator2/__init__.py", line 667, in _force_reset_uiautomator_v2if self._is_apk_required():File "/home/ldeng/code/PythonProjects/DLTest/venv/lib/python3.10/site-packages/uiautomator2/__init__.py", line 711, in _is_apk_requiredif self._package_version("com.github.uiautomator.test") is None:File "/home/ldeng/code/PythonProjects/DLTest/venv/lib/python3.10/site-packages/uiautomator2/__init__.py", line 735, in _package_versionreturn packaging.version.parse(m.group('name') if m else "")File "/home/ldeng/code/PythonProjects/DLTest/venv/lib/python3.10/site-packages/packaging/version.py", line 54, in parsereturn Version(version)File "/home/ldeng/code/PythonProjects/DLTest/venv/lib/python3.10/site-packages/packaging/version.py", line 200, in __init__raise InvalidVersion(f"Invalid version: '{version}'")
packaging.version.InvalidVersion: Invalid version: ''----------------------------------------------------------------------
手动解决方案：
点开ATX应用，点击“启动UIAUTOMATOR”，重新测试即可。
自动化解决方案：
UIautomator2用于自动化测试，设备重启就需要手动操作，是不是有点不自动？
其实思路很简单，用adb来跑这段手动逻辑， python代码如下：
DL_ATX_APK="com.github.uiautomator"
DL_ATX_MAIN="com.github.uiautomator.MainActivity"
START_ATX_SERVER="./atx/start_atx.sh"def restartUiautomotor(self):time.sleep(5)# unlock screenutils.shell_cmd("adb shell input keyevent 224")time.sleep(2)utils.shell_cmd("adb shell input keyevent 82")time.sleep(2)# start atx service on deviceutils.shell_cmd(START_ATX_SERVER)time.sleep(5)# start atx app on deviceself.device.app_start(DL_ATX_APK, DL_ATX_MAIN)time.sleep(2)# click “启动UIAUTOMATOR” on deviceutils.shell_cmd("adb shell input tap 185 450")time.sleep(2)# back to homeself.device.press("back")print("restart Uiautomotor success!")pass
脚本start_atx.sh
adb push atx-agent /data/local/tmp
adb shell chmod 755 /data/local/tmp/atx-agent
# launch atx-agent in daemon mode
adb shell /data/local/tmp/atx-agent server -d
# stop already running atx-agent and start daemon
adb shell /data/local/tmp/atx-agent server -d --stop
完美解决问题~!
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