09-05 12:57:24.310748 1823 31386 W System.err: java.io.FileNotFoundException: /com.android.mms-31192-2025-09-05-12-57-24.txt: open failed: EROFS (Read-only file system)
09-05 12:57:24.310799 1823 2628 D ActivityTaskManager: NFW_setLastResumedActivityUncheckLocked:true r:ActivityRecord{624995 u0 com.android.launcher/.Launcher t288} currentFocus:Window{1702b32 u0 com.android.mms/com.android.mms.ui.ConversationList}
09-05 12:57:24.310839 1823 1981 D UserAwareMgr: top app changed, current: {pkgName='com.android.launcher', processName='com.android.launcher', pid=6398, uid=10201, flags='tp|launcher', renderTid=6528, hwuiTids=[14980, 14981], glTids=null, threadInfos={launcher.anim={threadName='launcher.anim', tid=6441, extendTids=null}, oplus_lifecycle_helper={threadName='oplus_lifecycle_helper', tid=15615, extendTids=null}, onlineUXThread={threadName='onlineUXThread', tid=6442, extendTids=null}, UiThreadHelper={threadName='UiThreadHelper', tid=6419, extendTids=null}, UrgentTransactionHelper={threadName='UrgentTransactionHelper', tid=6431, extendTids=null}, RecentTasksList={threadName='RecentTasksList', tid=6439, extendTids=null}, launcher-loader={threadName='launcher-loader', tid=6421, extendTids=null}, TaskThumbnailCache={threadName='TaskThumbnailCache', tid=6448, extendTids=null}, WallpaperTransactionHelper={threadName='WallpaperTransactionHelper', tid=6432, extendTids=null}, TaskViewTransactionHelper={threadName='TaskViewTransactionHelper', tid=6436, extendTids=null}, TaskIconCache={threadName='TaskIconCache', tid=6447, extendTids=null}}}, prev: {pkgName='com.android.mms', processName='com.android.mms', pid=31192, uid=10244, flags='fg1', renderTid=31236, hwuiTids=[31300, 31299], glTids=null, threadInfos=null}
09-05 12:57:24.310871 1823 2628 D WindowManager: Looking for focus:Window{15210ef u0 (1-1)-Window{fbf6c31 alpha=1.0 fl=}} flags:-2121989864 canReceive:false reason:fromTouch= false isVisibleRequestedOrAdding=false mViewVisibility=8 mRemoveOnExit=false flags=-2121989864 appWindowsAreFocusable=true canReceiveTouchInput=true displayIsOnTop=true displayIsTrusted=true transitShouldKeepFocus=false
09-05 12:57:24.310889 1823 31386 W System.err: at libcore.io.IoBridge.open(IoBridge.java:574)
09-05 12:57:24.310904 1823 2628 D WindowManager: Looking for focus:Window{655c6f4 u0 com.android.launcher/com.android.launcher.Launcher} flags:-2121203456 canReceive:true reason:fromTouch= false isVisibleRequestedOrAdding=true mViewVisibility=0 mRemoveOnExit=false flags=-2121203456 appWindowsAreFocusable=true canReceiveTouchInput=true displayIsOnTop=true displayIsTrusted=true transitShouldKeepFocus=false
09-05 12:57:24.310912 1823 31386 W System.err: at java.io.FileOutputStream.<init>(FileOutputStream.java:259)
09-05 12:57:24.310927 1823 31386 W System.err: at java.io.FileOutputStream.<init>(FileOutputStream.java:208)
09-05 12:57:24.310934 1823 2628 D QuickBackInputPolicy: hasMultiChildrenInTask: false
09-05 12:57:24.310945 1823 31386 W System.err: at com.oplus.debug.ASSERT.copyAssert(ASSERT.java:204)
09-05 12:57:24.310989 1823 2628 D WindowManager: NFW_findFocusedWindowIfNeeded:Window{655c6f4 u0 com.android.launcher/com.android.launcher.Launcher} mCurrentFocus:Window{1702b32 u0 com.android.mms/com.android.mms.ui.ConversationList}
09-05 12:57:24.310999 1823 31386 W System.err: at com.oplus.debug.ASSERT.epitaph(ASSERT.java:153)
09-05 12:57:24.311011 1823 2628 D Osense-ComplexSceneManager: handleComplexScene sceneType=3, win=Window{655c6f4 u0 com.android.launcher/com.android.launcher.Launcher},isSurfaceShown=false,type=1,mode=1
09-05 12:57:24.311034 1823 31386 W System.err: at com.android.server.DropBoxManagerServiceExtImpl.addDropBoxFile(DropBoxManagerServiceExtImpl.java:345)
09-05 12:57:24.311051 1823 31386 W System.err: at com.android.server.DropBoxManagerService.addEntry(DropBoxManagerService.java:641)
09-05 12:57:24.311064 1823 31386 W System.err: at com.android.server.DropBoxManagerService.addEntry(DropBoxManagerService.java:554)
09-05 12:57:24.311077 1823 31386 W System.err: at com.android.server.DropBoxManagerService.addData(DropBoxManagerService.java:521)
09-05 12:57:24.311090 1823 31386 W System.err: at com.android.server.DropBoxManagerService$2.addData(DropBoxManagerService.java:250)
09-05 12:57:24.311103 1823 31386 W System.err: at android.os.DropBoxManager.addData(DropBoxManager.java:336)
09-05 12:57:24.311126 1823 2349 D Osense-FocusChangedComplexScene: collectWindowInfo pkgName=com.android.launcher,type=1,mode=1
09-05 12:57:24.311171 1823 31386 W System.err: at android.os.DropBoxManager.addText(DropBoxManager.java:323)
09-05 12:57:24.311202 1823 31386 W System.err: at com.android.server.am.ActivityManagerService$15.run(ActivityManagerService.java:10992)
09-05 12:57:24.311212 1823 2349 I Osense-ComplexSceneUtil: getPid activityRecord is null! pid=2452,pkgName=com.android.systemui
09-05 12:57:24.311237 1823 2349 I Osense-ComplexSceneUtil: getRenderThreadTid activityRecord is null! pkgName=com.android.systemui
09-05 12:57:24.311251 1823 2349 I Osense-ComplexSceneUtil: getHwuiTaskThreads activityRecord is null! pkgName=com.android.systemui
09-05 12:57:24.311299 1823 31386 W System.err: Caused by: android.system.ErrnoException: open failed: EROFS (Read-only file system)
09-05 12:57:24.311311 1823 2349 I Osense-ComplexSceneUtil: getPid activityRecord is null! pid=2452,pkgName=com.android.systemui
09-05 12:57:24.311327 1823 31386 W System.err: at libcore.io.Linux.open(Native Method)
09-05 12:57:24.311339 1823 2349 I Osense-ComplexSceneUtil: getRenderThreadTid activityRecord is null! pkgName=com.android.systemui
09-05 12:57:24.311347 1823 31386 W System.err: at libcore.io.ForwardingOs.open(ForwardingOs.java:568)
09-05 12:57:24.311355 1823 2349 I Osense-ComplexSceneUtil: getHwuiTaskThreads activityRecord is null! pkgName=com.android.systemui
09-05 12:57:24.311367 1823 31386 W System.err: at libcore.io.BlockGuardOs.open(BlockGuardOs.java:274)
09-05 12:57:24.311375 1823 2628 D WindowManager: Looking for focus:Window{15210ef u0 (1-1)-Window{fbf6c31 alpha=1.0 fl=}} flags:-2121989864 canReceive:false reason:fromTouch= false isVisibleRequestedOrAdding=false mViewVisibility=8 mRemoveOnExit=false flags=-2121989864 appWindowsAreFocusable=true canReceiveTouchInput=true displayIsOnTop=true displayIsTrusted=true transitShouldKeepFocus=false
09-05 12:57:24.311384 1823 31386 W System.err: at libcore.io.IoBridge.open(IoBridge.java:560)
09-05 12:57:24.311400 1823 2628 D WindowManager: Looking for focus:Window{655c6f4 u0 com.android.launcher/com.android.launcher.Launcher} flags:-2121203456 canReceive:true reason:fromTouch= false isVisibleRequestedOrAdding=true mViewVisibility=0 mRemoveOnExit=false flags=-2121203456 appWindowsAreFocusable=true canReceiveTouchInput=true displayIsOnTop=true displayIsTrusted=true transitShouldKeepFocus=false
09-05 12:57:24.311437 1823 2628 D QuickBackInputPolicy: hasMultiChildrenInTask: false
09-05 12:57:24.311445 1823 2349 D Osense-FocusChangedComplexScene: getAllVisibleWindow result=[WindowInfo{activityName=com.android.launcher/.Launcher, displayId=0, mode=1, pkgName=com.android.launcher, taskId=288, type=1, uid=10201, pid=6398, renderThreadTid=6528, hwuiTaskThreads=[14980, 14981], activityRecordState=2, mIsVisible=true, mIsFocused=false}, WindowInfo{activityName=com.android.mms/.ui.ConversationList, displayId=0, mode=1, pkgName=com.android.mms, taskId=387, type=1, uid=10244, pid=31192, renderThreadTid=31236, hwuiTaskThreads=[31300, 31299], activityRecordState=3, mIsVisible=true, mIsFocused=false}]
09-05 12:57:24.311495 1823 2628 V WindowManager: Changing focus from Window{1702b32 u0 com.android.mms/com.android.mms.ui.ConversationList} to Window{655c6f4 u0 com.android.launcher/com.android.launcher.Launcher},diplayid=0
09-05 12:57:24.311525 1823 31386 W System.err: ... 12 more这些日志表示什么以上
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本文记录了一个PopupWindow在特定情况下导致程序挂死的问题及解决方案。问题出现在尝试使用showAsDropDown方法显示PopupWindow时，传入了不当参数。解决办法是调整PopupWindow的实现方式，避免传入不合适对象。
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