[Ionicv4] Stuck at white page after splash screen

Bug Report

Ionic Info

Ionic:
   ionic (Ionic CLI)          : 4.1.1 (/Users/fred/.npm-global/lib/node_modules/ionic)
   Ionic Framework            : @ionic/angular 4.0.0-beta.3
   @angular-devkit/core       : 0.7.4
   @angular-devkit/schematics : 0.7.4
   @angular/cli               : 6.1.4
   @ionic/ng-toolkit          : 1.0.7
   @ionic/schematics-angular  : 1.0.5

Cordova:
   cordova (Cordova CLI) : 8.0.0
   Cordova Platforms     : android 7.0.0
   Cordova Plugins       : cordova-plugin-ionic-keyboard 2.1.2, cordova-plugin-ionic-webview 2.0.3, (and 3 other plugins)

System:
   Android SDK Tools : 26.1.1 (/Users/fred/Library/Android/sdk)
   NodeJS            : v8.11.4 (/usr/local/bin/node)
   npm               : 6.4.0
   OS                : macOS High Sierra
   Xcode             : Xcode 9.4.1 Build version 9F2000

Describe the Bug

Hi, I just updated my Ionic2 project to Ionic4 by using CLI tool to start a new project and moving code from old to new.

After Immigration I ran ionic cordova run android —prod and the building process worked successfully. After the splash screen only what I could see was a white page. But before updating this won’t happen in my old Ionic 2 project.

I tried to debug but no error reported in command line or browser. BTW in browser the project worked perfectly.

I used chrome://inspect to debug and found that the <app-root> tag was empty 0px * 0px but I don’t know where the problem is. Please help. Thank you!

Building Report

Date: 2018-08-22T11:07:05.524Z
Hash: d035536a53251418bdc9
Time: 19367ms
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> cordova run android
Android Studio project detected
ANDROID_HOME=/Users/fred/Library/Android/sdk
JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_171.jdk/Contents/Home
studio
Subproject Path: CordovaLib
Subproject Path: app
publishNonDefault is deprecated and has no effect anymore. All variants are now published.
The Task.leftShift(Closure) method has been deprecated and is scheduled to be removed in Gradle 5.0. Please use Task.doLast(Action) instead.
	at build_86ls9u5c7dnf6hjrkte4qaewu.run(/Users/fred/code/lovebox/client/platforms/android/app/build.gradle:143)
:CordovaLib:preBuild UP-TO-DATE
:CordovaLib:preDebugBuild UP-TO-DATE
:CordovaLib:compileDebugAidl UP-TO-DATE
:CordovaLib:compileDebugRenderscript UP-TO-DATE
:CordovaLib:checkDebugManifest UP-TO-DATE
:CordovaLib:generateDebugBuildConfig UP-TO-DATE
:CordovaLib:prepareLintJar UP-TO-DATE
:CordovaLib:generateDebugResValues UP-TO-DATE
:CordovaLib:generateDebugResources UP-TO-DATE
:CordovaLib:packageDebugResources UP-TO-DATE
:CordovaLib:platformAttrExtractor UP-TO-DATE
:CordovaLib:processDebugManifest UP-TO-DATE
:CordovaLib:processDebugResources UP-TO-DATE
:CordovaLib:generateDebugSources UP-TO-DATE
:CordovaLib:javaPreCompileDebug UP-TO-DATE
:CordovaLib:compileDebugJavaWithJavac UP-TO-DATE
:CordovaLib:processDebugJavaRes NO-SOURCE
:CordovaLib:transformClassesAndResourcesWithPrepareIntermediateJarsForDebug UP-TO-DATE
:app:preBuild UP-TO-DATE
:app:preDebugBuild UP-TO-DATE
:app:compileDebugAidl UP-TO-DATE
:CordovaLib:packageDebugRenderscript NO-SOURCE
:app:compileDebugRenderscript UP-TO-DATE
:app:checkDebugManifest UP-TO-DATE
:app:generateDebugBuildConfig UP-TO-DATE
:app:prepareLintJar UP-TO-DATE
:app:generateDebugResValues UP-TO-DATE
:app:generateDebugResources UP-TO-DATE
:app:mergeDebugResources UP-TO-DATE
:app:createDebugCompatibleScreenManifests UP-TO-DATE
:app:processDebugManifest UP-TO-DATE
:app:splitsDiscoveryTaskDebug UP-TO-DATE
:app:processDebugResources UP-TO-DATE
:app:generateDebugSources UP-TO-DATE
:app:javaPreCompileDebug UP-TO-DATE
:app:compileDebugJavaWithJavac UP-TO-DATE
:app:compileDebugNdk NO-SOURCE
:app:compileDebugSources UP-TO-DATE
:CordovaLib:mergeDebugShaders UP-TO-DATE
:CordovaLib:compileDebugShaders UP-TO-DATE
:CordovaLib:generateDebugAssets UP-TO-DATE
:CordovaLib:mergeDebugAssets UP-TO-DATE
:app:mergeDebugShaders UP-TO-DATE
:app:compileDebugShaders UP-TO-DATE
:app:generateDebugAssets UP-TO-DATE
:app:mergeDebugAssets UP-TO-DATE
:app:transformClassesWithStackFramesFixerForDebug UP-TO-DATE
:app:transformClassesWithDesugarForDebug UP-TO-DATE
:app:transformClassesWithDexBuilderForDebug UP-TO-DATE
:app:transformDexArchiveWithExternalLibsDexMergerForDebug UP-TO-DATE
:app:transformDexArchiveWithDexMergerForDebug UP-TO-DATE
:CordovaLib:compileDebugNdk NO-SOURCE
:CordovaLib:mergeDebugJniLibFolders UP-TO-DATE
:CordovaLib:transformNativeLibsWithMergeJniLibsForDebug UP-TO-DATE
:CordovaLib:transformNativeLibsWithIntermediateJniLibsForDebug UP-TO-DATE
:app:mergeDebugJniLibFolders UP-TO-DATE
:app:transformNativeLibsWithMergeJniLibsForDebug UP-TO-DATE
:app:processDebugJavaRes NO-SOURCE
:app:transformResourcesWithMergeJavaResForDebug UP-TO-DATE
:app:validateSigningDebug
:app:packageDebug UP-TO-DATE
:app:assembleDebug UP-TO-DATE
:app:cdvBuildDebug UP-TO-DATE

BUILD SUCCESSFUL in 1s
46 actionable tasks: 1 executed, 45 up-to-date
Built the following apk(s):
	/Users/fred/code/lovebox/client/platforms/android/app/build/outputs/apk/debug/app-debug.apk
ANDROID_HOME=/Users/fred/Library/Android/sdk
JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_171.jdk/Contents/Home
No target specified, deploying to device '3e063f54'.
none
Skipping build...
Built the following apk(s):
	/Users/fred/code/lovebox/client/platforms/android/app/build/outputs/apk/debug/app-debug.apk
Using apk: /Users/fred/code/lovebox/client/platforms/android/app/build/outputs/apk/debug/app-debug.apk
Package name: io.ionic.starter
LAUNCH SUCCESS

[axuu]

@mhartington Update: I changed to another Android 7.0.0 phone and this problem didn’t show. But it still not OK with my two Android 5.0+ phone, One Plus 1 and One Plus 2.

[axuu]

@chrisbinnefeld Hi, it’s 43.0.2357.121 and like this