adb shell dumpsys窗口窗口输出描述 [英] adb shell dumpsys window windows output describing

问题描述

我正在使用应用在我的Android设备和Java代码之间进行交互。我遇到的问题是，在按下主页按钮后，在某些设备（包括仿真器）上，appium返回的当前活动不正确（它返回的previuos活动目前必须最小化）。我发现appium使用了 dumpsys窗口窗口 ，其中包含 mFocusedApp 值以获取当前应用。我阅读了关于获取Android当前活动的另一个答案，通常建议使用：

I'm using appuim for interaction between my Android device and java code. And I faced with problem that on some kind of devices(including emulators) after pressing on Home button, appium return incorrect current activity (it returns previuos activity which is currently must be minimized). I found that appium used dumpsys window windows with grabbing mFocusedApp value for getting current app. I read another answers about getting Android current activities, and mostly it recommend to use:

adb shell "dumpsys window windows | grep -E 'mCurrentFocus|mFocusedApp'"

这是问题的根源，因为按下主页按钮 mCurrentFocus 和 mFocusedApp 链接到不同的活动。但是我找不到任何解释说明这些字段之间的区别。为什么appuim仅使用 mFocusedApp ？

That was the source of the problem, because after pressing Home button mCurrentFocus and mFocusedApp linked to different activities. But I can't find any explanation the difference between these fields. And why appuim uses only mFocusedApp for it?

推荐答案

mCurrentFocus 和 mFocusedApp 之间的差异解释正盯着您：

The explanation of the difference between mCurrentFocus and mFocusedApp stares right at you:

$ dumpsys window windows | grep -E 'mCurrentFocus|mFocusedApp'
    mCurrentFocus=Window{X uX package/.activity}
    mFocusedApp=AppWindowToken{X token=Token{X ActivityRecord{X uX package/.activity tX}}}

mCurrentFocus 是一个 Window （只是一个视图，可能没有 ActivityRecord 与之关联）

The mCurrentFocus is a Window (just a view which may or may not have an ActivityRecord associated with it)

mFocusedApp 是 AppWindowToken （一个 app 令牌，它将始终具有 ActivityRecord ）

The mFocusedApp is an AppWindowToken (an app Token which will always have an ActivityRecord)

因此，当输入焦点切换到具有活动的视图时， / code>- mCurrentFocus 和 mFocusedApp 都将显示相同的活动。但是有时焦点会切换到视图而没有活动（例如SystemUI的某些部分）-然后是 mCurrentFocus 将显示视图，但 mFocusedApp 仍将显示<$ app 中的c $ c> ActivityRecord ，它的焦点在最后一次切换之前。

So when input focus switches to a view with an activity - both mCurrentFocus and mFocusedApp would show the same activity. But sometimes focus switches to a view without an activity (like parts of SystemUI, etc) - then mCurrentFocus will be showing that view but mFocusedApp will still be showing the ActivityRecord of the app which had the focus before the last switch.

这篇关于adb shell dumpsys窗口窗口输出描述的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！