uiautomatorviewer和appium无法捕获App页面

报错

uiautomatorviewer报错

Error obtaining ui hierarchy Reason:error taking device screenshot:EOF

appium报错

App Source Could not obtain source: [object Object]

appium server日志报错

Error: Cannot get screenshot data because of 'The size of the taken screenshot equals to zero.'. Make sure the 'LayoutParams.FLAG_SECURE' is not set for the current view

原因

App页面已经被禁止截屏，禁用用户截屏的代码如下：

getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);setContentView(R.layout.activity_main);

解决

执行代码，进入该页面，通过String source = driver.getPageSource();获取该页面的dom，通过dom找到需要定位的元素。