安卓wms窗口类闪黑,黑屏等疑难问题你会吗?-vip学员作业

背景

在学习马哥的wms/ams深入专题课程时，在最后一节课实现简易版本的多屏互动时候，有一个学员提出一个多屏互动时候为啥原生的那种方式会有闪黑问题呢？

这个场景下的其实闪黑问题其实大部分同学都可能还没在意过，马哥这边刚好把这种闪黑问题拿出来给大家作为一个闪黑问题实战作业的案例。

这样各位学习了wms学员都可以有条件进行这个实战作业的完成，相关的答案和讨论可以到1个星期后私聊马哥或者vip群里会有相关的通知。

复现问题环境

1、打开多屏模式，并且桌面打开短信Activity2、查看确定短信Activity的task ID

先看看当前top Activity对应的task的id

test@test:~/disk2/aosp14$ adb shell am stack listRootTask id=14 bounds=[0,0][1440,2960] displayId=0 userId=0 configuration={1.0 310mcc260mnc [en_US] ldltr sw411dp w411dp h774dp 560dpi nrml long port finger qwerty/v/v dpad/v winConfig={ mBounds=Rect(0, 0 - 1440, 2960) mAppBounds=Rect(0, 0 - 1440, 2792) mMaxBounds=Rect(0, 0 - 1440, 2960) mDisplayRotation=ROTATION_0 mWindowingMode=fullscreen mDisplayWindowingMode=fullscreen mActivityType=standard mAlwaysOnTop=undefined mRotation=ROTATION_0} s.34 fontWeightAdjustment=0}  taskId=14: com.android.messaging/com.android.messaging.ui.conversationlist.ConversationListActivity bounds=[0,0][1440,2960] userId=0 visible=true topActivity=ComponentInfo{com.android.messaging/com.android.messaging.ui.conversationlist.ConversationListActivity}RootTask id=1 bounds=[0,0][1440,2960] displayId=0 userId=0 configuration={1.0 310mcc260mnc [en_US] ldltr sw411dp w411dp h774dp 560dpi nrml long port finger qwerty/v/v dpad/v winConfig={ mBounds=Rect(0, 0 - 1440, 2960) mAppBounds=Rect(0, 0 - 1440, 2792) mMaxBounds=Rect(0, 0 - 1440, 2960) mDisplayRotation=ROTATION_0 mWindowingMode=fullscreen mDisplayWindowingMode=fullscreen mActivityType=home mAlwaysOnTop=undefined mRotation=ROTATION_0} s.34 fontWeightAdjustment=0}  taskId=11: com.android.launcher3/com.android.launcher3.uioverrides.QuickstepLauncher bounds=[0,0][1440,2960] userId=0 visible=false topActivity=ComponentInfo{com.android.launcher3/com.android.launcher3.uioverrides.QuickstepLauncher}RootTask id=2 bounds=[0,0][1440,2960] displayId=0 userId=0 configuration={1.0 310mcc260mnc [en_US] ldltr sw411dp w411dp h774dp 560dpi nrml long port finger qwerty/v/v dpad/v winConfig={ mBounds=Rect(0, 0 - 1440, 2960) mAppBounds=Rect(0, 0 - 1440, 2792) mMaxBounds=Rect(0, 0 - 1440, 2960) mDisplayRotation=ROTATION_0 mWindowingMode=fullscreen mDisplayWindowingMode=fullscreen mActivityType=undefined mAlwaysOnTop=undefined mRotation=ROTATION_0} s.34 fontWeightAdjustment=0}  taskId=3: unknown bounds=[0,0][1440,2960] userId=0 visible=false  taskId=4: unknown bounds=[0,2960][1440,4440] userId=0 visible=falseRootTask id=12 bounds=[0,0][1440,2960] displayId=2 userId=0 configuration={1.0 310mcc260mnc [en_US] ldltr sw1082dp w1082dp h2167dp 213dpi xlrg long port finger qwerty/v/v dpad/v winConfig={ mBounds=Rect(0, 0 - 1440, 2960) mAppBounds=Rect(0, 0 - 1440, 2885) mMaxBounds=Rect(0, 0 - 1440, 2960) mDisplayRotation=ROTATION_0 mWindowingMode=fullscreen mDisplayWindowingMode=fullscreen mActivityType=home mAlwaysOnTop=undefined mRotation=ROTATION_0} s.34 fontWeightAdjustment=0}  taskId=13: com.android.launcher3/com.android.launcher3.secondarydisplay.SecondaryDisplayLauncher bounds=[0,0][1440,2960] userId=0 visible=true topActivity=ComponentInfo{com.android.launcher3/com.android.launcher3.secondarydisplay.SecondaryDisplayLauncher}