【HarmonyOS NEXT】设备显示白屏 syswarning happended in XXX

【HarmonyOS NEXT】设备显示白屏 syswarning happended in XXX

一、问题背景：

运行启动鸿蒙应用项目，设备显示白屏，IDE左下角提示syswarning happended in XXX设备名。

点击Jump to Log提示如下：

Device info:HUAWEI Mate 60 Pro
Build info:ALN-AL00 5.0.0.115(SP6C00E11)
Fingerprint:15d8cca67efbe7c67f21f8523f3a7b36c0d47b8ceee0d8f987
Module name:com.test.basedemo
Version:1.0.0
Foreground:Yes
Pid:28940
Uid:20020001
Reason:WINDOW_EXCEPTION_DETECTION
syswarning: WINDOW_EXCEPTION_DETECTION WINDOW_EXCEPTION_DETECTION at 2025020
DisplayPowerInfo:powerState:AWAKE
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
DOMAIN:WINDOWMANAGER
STRINGID:WINDOW_EXCEPTION_DETECTION
TIMESTAMP:2025/02/07
PID:28940
UID:20020001
PACKAGE_NAME:
PROCESS_NAME:
*******************************************
start time: 2025/02/07
DOMAIN = WINDOWMANAGER
EVENTNAME = WINDOW_EXCEPTION_DETECTION
TIMESTAMP = 2025/02/07
PID = 28940
UID = 20020001
TID = 28940
PACKAGE_NAME = 
PROCESS_NAME = 
eventLog_action = cmd:w
eventLog_interval = 300
MSG = SetUIContent timeout uid: 20020001, windowName: basedemo0, bundleName: com.test.basedemo

catcher cmd: hidumper -s WindowManagerService -a -a 

-------------------------------[ability]-------------------------------
----------------------------------WindowManagerService----------------------------------
-------------------------------------ScreenGroup 0-------------------------------------
WindowName           DisplayId Pid     WinId Type Mode Flag ZOrd Orientation [ x    y    w    h    ] [ OffsetX OffsetY ] [ ScaleX  ScaleY  PivotX  PivotY  ]
SCBScenePanel1       0         3143    3     2109 1    0    100  0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0.5     0.5     ]
BackgroundBlurView2  0         3143    4     2109 1    0    101  0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0.5     0.5     ]
SCBWallpaper3        0         3143    5     2000 1    0    1    0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0.5     0.5     ]
SCBDesktop4          0         3143    7     2001 1    0    2    0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0.5     0.5     ]
SCBGestureNavBar15   0         3143    18    2111 1    0    2200 0           [ 0    2577 1260 143  ] [ 0       0       ] [ 1       1       0.5     0.5     ]
SCBStatusBar16       0         3143    19    2108 1    0    2202 0           [ 0    0    1260 123  ] [ 0       0       ] [ 1       1       0.5     0.5     ]
SCBGestureBack20     0         3143    23    2111 1    0    4101 0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0.5     0.5     ]
SCBFormCenter24      0         3143    27    2135 1    0    2002 0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0.5     0.5     ]
basedemo0            0         28940   79    1    1    0    102  0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0.5     0.5     ]
---------------------------------------------------------------------------------------
SCBNegativeScreen5   0         3143    8     2126 1    0    -1   0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0       0       ]
SCBGlobalSearch6     0         3143    9     2125 1    0    -1   0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0.5     0.5     ]
GuidanceDialogScene7 0         3143    10    2109 1    0    -1   0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0       0       ]
SCBBannerNotificatio 0         3143    11    2106 1    0    -1   0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0       0       ]
BannerOrLiveManager9 0         3143    12    2109 1    0    -1   0           [ 0    0    0    0    ] [ 0       0       ] [ 1       1       0       0       ]
SCBGestureTopBar10   0         3143    13    2111 1    0    -1   0           [ 0    0    1260 123  ] [ 0       0       ] [ 1       1       0.5     0.5     ]
SCBSysDialogDefault1 0         3143    14    2104 1    0    -1   0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0.5     0.5     ]
SCBScreenLockBouncer 0         3143    15    2110 1    0    -1   0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0.5     0.5     ]
SCBScreenLock13      0         3143    16    2110 1    0    -1   0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0.5     0.5     ]
SCBSystemTopPanel14  0         3143    17    2111 1    0    -1   0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0.5     0.5     ]
SCBDropdownPanel17   0         3143    20    2109 1    0    -1   0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0       0       ]
SCBSysDialogUpper18  0         3143    21    2111 1    0    -1   0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0.5     0.5     ]
SCBVolumePanel19     0         3143    22    2111 1    0    -1   0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0       0       ]
SCBSpacedGesture21   0         3143    24    2135 1    0    -1   0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0       0       ]
SCBSideEdgeBar22     0         3143    25    2135 1    0    -1   0           [ 0    312  1260 338  ] [ 0       0       ] [ 1       1       0.5     0.5     ]
SCBPrivacyIndicator2 0         3143    26    2127 1    0    -1   0           [ 0    0    1260 2720 ] [ 0       0       ] [ 1       1       0       0       ]
softKeyboard1        0         3640    28    2105 102  0    -1   0           [ 0    1700 1260 874  ] [ 0       0       ] [ 1       1       0.5     0.5     ]
SCBKeyboardPanel     0         3143    29    2134 1    0    -1   0           [ 0    1700 1260 1020 ] [ 0       0       ] [ 1       1       0.5     0.5     ]
SCBKeyboardDialog25  0         3143    38    2106 1    0    -1   0           [ 0    0    0    0    ] [ 0       0       ] [ 1       1       0       0       ]
Focus window: 79
Total window num: 32
Catcher log total time is 90ms

二、解决方案

方案一：
该问题是因为启动页没有注册导致，需要在路由表中添加路径（resources - base - profile - main_pages ）

添加完成后，重新同步项目，启动即可正常加载。

方案二：
创建页面时，通过右键New - Page 进行创建，IDE会自动加入到路由表中。