Ionic ios应用程序在android上确实很慢但很快

Question

我用ionic创建了一个应用程序，它几乎完成了(它是一个购物车应用程序(。现在我想构建应用程序，我使用以下命令：

ionic cordova build --release --prod --verbose XXXXX

其中CCD_ 1是CCD_ 2或CCD_。

当为android构建应用程序时(在签名等之后(，该应用程序在启动屏幕上大约需要3或4秒，这是一个可以接受的时间，但当我使用相同的命令为ios构建时，问题就来了，我试图在XCode中测试该应用程序，它可以工作，唯一的问题是该应用程序需要30秒，这使得该应用程序无法使用，我可以理解为什么。

edit：我也认为问题出在模拟器上，但我也尝试在设备上运行该应用程序，结果相同。

下面我会留下信息：

离子信息

Ionic:
Ionic CLI                     : 6.11.7 (/usr/local/lib/node_modules/@ionic/cli)
Ionic Framework               : @ionic/angular 4.11.10
@angular-devkit/build-angular : 0.803.29
@angular-devkit/schematics    : 8.3.29
@angular/cli                  : 8.3.29
@ionic/angular-toolkit        : 2.3.2
Cordova:
Cordova CLI       : 10.0.0
Cordova Platforms : android 9.0.0
Cordova Plugins   : cordova-plugin-ionic-keyboard 2.2.0, cordova-plugin-ionic-webview 4.2.1, (and 14 other plugins)
Utility:
cordova-res : 0.15.1
native-run  : 1.0.0
System:
ios-deploy : 1.11.1
ios-sim    : 8.0.2
NodeJS     : v12.16.1 (/usr/local/bin/node)
npm        : 6.14.8
OS         : macOS Catalina
Xcode      : Xcode 11.7 Build version 11E801a

包JSON

{
"name": "store-app",
"version": "0.0.1",
"author": "Ionic Framework",
"homepage": "https://ionicframework.com/",
"scripts": {
"ng": "ng",
"start": "ng serve",
"build": "ng build",
"test": "ng test",
"lint": "ng lint --typeCheck",
"e2e": "ng e2e",
"clean-project": "rm -rf www && rm -rf platforms && rm -rf node_modules && rm -rf plugins"
},
"private": true,
"dependencies": {
"@agm/core": "~1.0.0",
"@angular/common": "^8.2.14",
"@angular/core": "^8.2.14",
"@angular/forms": "^8.2.14",
"@angular/platform-browser": "^8.2.14",
"@angular/platform-browser-dynamic": "^8.2.14",
"@angular/router": "^8.2.14",
"@ionic-native/android-permissions": "^5.27.0",
"@ionic-native/background-mode": "^5.26.0",
"@ionic-native/core": "^5.0.0",
"@ionic-native/firebase-analytics": "^5.28.0",
"@ionic-native/geolocation": "^5.10.0",
"@ionic-native/header-color": "^5.26.0",
"@ionic-native/keyboard": "^5.14.0",
"@ionic-native/location-accuracy": "^5.27.0",
"@ionic-native/onesignal": "^5.13.0",
"@ionic-native/splash-screen": "^5.0.0",
"@ionic-native/status-bar": "^5.0.0",
"@ionic-native/unique-device-id": "^5.9.0",
"@ionic/angular": "^4.1.0",
"@ionic/lab": "^3.1.7",
"@ngx-translate/core": "^10.0.0",
"@ngx-translate/http-loader": "^3.0.0",
"animate.css": "^4.1.0",
"com.testfairy.cordova-plugin": "^2.25.0",
"cordova-browser": "6.0.0",
"cordova-plugin-background-mode": "^0.7.3",
"cordova-plugin-device": "^2.0.3",
"cordova-plugin-geolocation": "^4.0.2",
"cordova-plugin-headercolor": "^1.0.0",
"cordova-plugin-ionic-keyboard": "^2.2.0",
"cordova-plugin-ionic-webview": "^4.1.3",
"cordova-plugin-splashscreen": "^6.0.0",
"cordova-plugin-statusbar": "^2.4.3",
"cordova-plugin-uniquedeviceid": "^1.3.2",
"cordova-plugin-whitelist": "^1.3.4",
"core-js": "^2.5.4",
"onesignal-cordova-plugin": "^2.5.2",
"rxjs": "~6.6.2",
"zone.js": "~0.9.1"
},
"devDependencies": {
"@angular-devkit/architect": "~0.800.0",
"@angular-devkit/build-angular": "~0.803.29",
"@angular-devkit/core": "~8.3.29",
"@angular-devkit/schematics": "~8.3.29",
"@angular/cli": "~8.3.29",
"@angular/compiler": "~8.2.14",
"@angular/compiler-cli": "~8.2.14",
"@angular/language-service": "~8.2.14",
"@ionic/angular-toolkit": "~2.3.2",
"@types/jasmine": "~2.8.8",
"@types/jasminewd2": "~2.0.3",
"@types/node": "~10.14.2",
"codelyzer": "~5.2.1",
"cordova-android": "9.0.0",
"cordova-ios": "^6.1.0",
"cordova-plugin-advanced-geolocation": "git+https://github.com/esri/cordova-plugin-advanced-geolocation.git",
"cordova-plugin-android-permissions": "^1.0.2",
"cordova-plugin-androidx-adapter": "^1.1.1",
"cordova-plugin-firebase-analytics": "^4.3.1",
"cordova-plugin-request-location-accuracy": "^2.3.0",
"cordova-support-android-plugin": "^1.0.2",
"cordova-support-google-services": "^1.4.1",
"husky": "~4.2.5",
"jasmine-core": "~2.99.1",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~3.1.4",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "~2.0.1",
"karma-jasmine": "~1.1.2",
"karma-jasmine-html-reporter": "^0.2.2",
"lint-staged": "^10.2.2",
"node-sass": "^4.13.1",
"prettier": "^2.0.5",
"protractor": "~5.4.0",
"ts-node": "~8.10.2",
"tslint": "~5.18.0",
"tslint-config-prettier": "~1.18.0",
"tslint-etc": "^1.10.1",
"typescript": "~3.5.3"
},
"description": "An Ionic project",
"cordova": {
"plugins": {
"cordova-plugin-whitelist": {},
"cordova-plugin-statusbar": {},
"cordova-plugin-device": {},
"cordova-plugin-splashscreen": {},
"cordova-plugin-ionic-webview": {
"ANDROID_SUPPORT_ANNOTATIONS_VERSION": "27.+"
},
"cordova-plugin-ionic-keyboard": {},
"cordova-plugin-uniquedeviceid": {},
"cordova-plugin-geolocation": {},
"onesignal-cordova-plugin": {},
"cordova-plugin-background-mode": {},
"com.testfairy.cordova-plugin": {},
"cordova-plugin-advanced-geolocation": {},
"cordova-plugin-headercolor": {},
"cordova-plugin-android-permissions": {},
"cordova-plugin-request-location-accuracy": {
"PLAY_SERVICES_LOCATION_VERSION": "16.+"
},
"cordova-plugin-firebase-analytics": {
"FIREBASE_ANALYTICS_COLLECTION_ENABLED": "true"
},
"cordova-plugin-androidx-adapter": {}
},
"platforms": [
"android",
"browser",
"ios"
]
}
}

Config.xml

<?xml version='1.0' encoding='utf-8'?>
<widget android-versionCode="1" id="com.btd.buggy" version="0.0.1" xmlns="http://www.w3.org/ns/widgets" xmlns:android="http://schemas.android.com/apk/res/android" xmlns:cdv="http://cordova.apache.org/ns/1.0">
<name>Buggy</name>
<description>Store App</description>
<author email="[e-mail]" href="https://test-app.com/">Buggy</author>
<content src="index.html" />
<access origin="*" />
<access origin="about:*" />
<allow-intent href="http://*/*" />
<allow-intent href="https://*/*" />
<allow-intent href="tel:*" />
<allow-intent href="sms:*" />
<allow-intent href="mailto:*" />
<allow-intent href="geo:*" />
<allow-navigation href="*" />
<allow-navigation href="about:*" />
<preference name="ScrollEnabled" value="false" />
<preference name="android-minSdkVersion" value="22" />
<preference name="BackupWebStorage" value="none" />
<preference name="SplashMaintainAspectRatio" value="true" />
<preference name="FadeSplashScreenDuration" value="300" />
<preference name="SplashShowOnlyFirstTime" value="false" />
<preference name="SplashScreen" value="screen" />
<preference name="SplashScreenDelay" value="30000" />
<preference name="ShowSplashScreenSpinner" value="false" />
<preference name="AutoHideSplashScreen" value="false" />
<preference name="Orientation" value="portrait" />
<preference name="AndroidXEnabled" value="true" />
<preference name="GradlePluginGoogleServicesEnabled" value="true" />
<preference name="GradlePluginGoogleServicesVersion" value="4.2.0" />
<engine name="android" spec="9.0.0" />
<platform name="android">
<edit-config file="app/src/main/AndroidManifest.xml" mode="merge" target="/manifest/application" xmlns:android="http://schemas.android.com/apk/res/android">
<application android:usesCleartextTraffic="true" />
</edit-config>
<resource-file src="google-services.json" target="app/google-services.json" />
<allow-intent href="market:*" />
<preference name="android-targetSdkVersion" value="28" />
<icon density="ldpi" src="resources/android/icon/drawable-ldpi-icon.png" />
<icon density="mdpi" src="resources/android/icon/drawable-mdpi-icon.png" />
<icon density="hdpi" src="resources/android/icon/drawable-hdpi-icon.png" />
<icon density="xhdpi" src="resources/android/icon/drawable-xhdpi-icon.png" />
<icon density="xxhdpi" src="resources/android/icon/drawable-xxhdpi-icon.png" />
<icon density="xxxhdpi" src="resources/android/icon/drawable-xxxhdpi-icon.png" />
<splash density="land-ldpi" src="resources/android/splash/drawable-land-ldpi-screen.png" />
<splash density="land-mdpi" src="resources/android/splash/drawable-land-mdpi-screen.png" />
<splash density="land-hdpi" src="resources/android/splash/drawable-land-hdpi-screen.png" />
<splash density="land-xhdpi" src="resources/android/splash/drawable-land-xhdpi-screen.png" />
<splash density="land-xxhdpi" src="resources/android/splash/drawable-land-xxhdpi-screen.png" />
<splash density="land-xxxhdpi" src="resources/android/splash/drawable-land-xxxhdpi-screen.png" />
<splash density="port-ldpi" src="resources/android/splash/drawable-port-ldpi-screen.png" />
<splash density="port-mdpi" src="resources/android/splash/drawable-port-mdpi-screen.png" />
<splash density="port-hdpi" src="resources/android/splash/drawable-port-hdpi-screen.png" />
<splash density="port-xhdpi" src="resources/android/splash/drawable-port-xhdpi-screen.png" />
<splash density="port-xxhdpi" src="resources/android/splash/drawable-port-xxhdpi-screen.png" />
<splash density="port-xxxhdpi" src="resources/android/splash/drawable-port-xxxhdpi-screen.png" />
<resource-file src="resources/android/notification/drawable-mdpi/ic_stat_onesignal_default.png" target="app/src/main/res/drawable-mdpi/ic_stat_onesignal_default.png" />
<resource-file src="resources/android/notification/drawable-hdpi/ic_stat_onesignal_default.png" target="app/src/main/res/drawable-hdpi/ic_stat_onesignal_default.png" />
<resource-file src="resources/android/notification/drawable-xhdpi/ic_stat_onesignal_default.png" target="app/src/main/res/drawable-xhdpi/ic_stat_onesignal_default.png" />
<resource-file src="resources/android/notification/drawable-xxhdpi/ic_stat_onesignal_default.png" target="app/src/main/res/drawable-xxhdpi/ic_stat_onesignal_default.png" />
<resource-file src="resources/android/notification/drawable-xxxhdpi/ic_stat_onesignal_default.png" target="app/src/main/res/drawable-xxxhdpi/ic_stat_onesignal_default.png" />
</platform>
<platform name="ios">
<resource-file src="GoogleService-Info.plist" target="app/GoogleService-Info.plist" />
<allow-intent href="itms:*" />
<allow-intent href="itms-apps:*" />
<icon height="57" src="resources/ios/icon/icon.png" width="57" />
<icon height="114" src="resources/ios/icon/[e-mail]" width="114" />
<icon height="40" src="resources/ios/icon/icon-40.png" width="40" />
<icon height="80" src="resources/ios/icon/[e-mail]" width="80" />
<icon height="120" src="resources/ios/icon/[e-mail]" width="120" />
<icon height="50" src="resources/ios/icon/icon-50.png" width="50" />
<icon height="100" src="resources/ios/icon/[e-mail]" width="100" />
<icon height="60" src="resources/ios/icon/icon-60.png" width="60" />
<icon height="120" src="resources/ios/icon/[e-mail]" width="120" />
<icon height="180" src="resources/ios/icon/[e-mail]" width="180" />
<icon height="72" src="resources/ios/icon/icon-72.png" width="72" />
<icon height="144" src="resources/ios/icon/[e-mail]" width="144" />
<icon height="76" src="resources/ios/icon/icon-76.png" width="76" />
<icon height="152" src="resources/ios/icon/[e-mail]" width="152" />
<icon height="167" src="resources/ios/icon/[e-mail]" width="167" />
<icon height="29" src="resources/ios/icon/icon-small.png" width="29" />
<icon height="58" src="resources/ios/icon/[e-mail]" width="58" />
<icon height="87" src="resources/ios/icon/[e-mail]" width="87" />
<icon height="1024" src="resources/ios/icon/icon-1024.png" width="1024" />
<splash height="1136" src="resources/ios/splash/Default-568h@2x~iphone.png" width="640" />
<splash height="1334" src="resources/ios/splash/Default-667h.png" width="750" />
<splash height="2208" src="resources/ios/splash/Default-736h.png" width="1242" />
<splash height="1242" src="resources/ios/splash/Default-Landscape-736h.png" width="2208" />
<splash height="1536" src="resources/ios/splash/Default-Landscape@2x~ipad.png" width="2048" />
<splash height="2048" src="resources/ios/splash/Default-Landscape@~ipadpro.png" width="2732" />
<splash height="768" src="resources/ios/splash/Default-Landscape~ipad.png" width="1024" />
<splash height="2048" src="resources/ios/splash/Default-Portrait@2x~ipad.png" width="1536" />
<splash height="2732" src="resources/ios/splash/Default-Portrait@~ipadpro.png" width="2048" />
<splash height="1024" src="resources/ios/splash/Default-Portrait~ipad.png" width="768" />
<splash height="960" src="resources/ios/splash/Default@2x~iphone.png" width="640" />
<splash height="480" src="resources/ios/splash/Default~iphone.png" width="320" />
<splash height="2732" src="resources/ios/splash/Default@2x~universal~anyany.png" width="2732" />
<icon height="20" src="resources/ios/icon/icon-20.png" width="20" />
<icon height="40" src="resources/ios/icon/[e-mail]" width="40" />
<icon height="60" src="resources/ios/icon/[e-mail]" width="60" />
<icon height="29" src="resources/ios/icon/icon-29.png" width="29" />
<icon height="58" src="resources/ios/icon/[e-mail]" width="58" />
<icon height="87" src="resources/ios/icon/[e-mail]" width="87" />
<icon height="48" src="resources/ios/icon/[e-mail]" width="48" />
<icon height="55" src="resources/ios/icon/[e-mail]" width="55" />
<icon height="88" src="resources/ios/icon/[e-mail]" width="88" />
<icon height="172" src="resources/ios/icon/[e-mail]" width="172" />
<icon height="196" src="resources/ios/icon/[e-mail]" width="196" />
<icon height="216" src="resources/ios/icon/[e-mail]" width="216" />
<splash height="2688" src="resources/ios/splash/Default-2688h~iphone.png" width="1242" />
<splash height="1792" src="resources/ios/splash/Default-1792h~iphone.png" width="828" />
<splash height="2436" src="resources/ios/splash/Default-2436h.png" width="1125" />
</platform>
<platform name="ios">
<config-file parent="NSLocationAlwaysUsageDescription" platform="ios" target="*-Info.plist">
<string>Buggy necesita acceder a tu ubicación para poder brindarte un mejor servicio.</string>
</config-file>
<config-file parent="NSLocationWhenInUseUsageDescription" platform="ios" target="*-Info.plist">
<string>Buggy necesita acceder a tu ubicación para poder brindarte un mejor servicio.</string>
</config-file>
</platform>
<plugin name="cordova-plugin-whitelist" spec="1.3.3" />
<plugin name="cordova-plugin-statusbar" spec="2.4.2" />
<plugin name="cordova-plugin-device" spec="2.0.2" />
<plugin name="cordova-plugin-splashscreen" spec="5.0.2" />
<plugin name="cordova-plugin-ionic-webview" spec="^4.0.0" />
<plugin name="cordova-plugin-ionic-keyboard" spec="^2.0.5" />
<plugin name="cordova-plugin-advanced-geolocation" spec="https://github.com/esri/cordova-plugin-advanced-geolocation.git" />
<plugin name="cordova-plugin-uniquedeviceid" spec="1.3.2" />
<plugin name="onesignal-cordova-plugin" spec="2.5.2" />
</widget>

应用程序路由模块

@NgModule({
imports: [
RouterModule.forRoot(routes, {
preloadingStrategy: PreloadAllModules,
}),
],
exports: [RouterModule],
})
export class AppRoutingModule {}

路线是我所有的路线，我有38个视图。

在我的应用程序模块中，我加载了所有的服务，但我认为这并不重要，因为angular也应该很慢。

谢谢你读到这篇文章。

Answer 1

基本上我发现了问题，之前的应用程序开发人员在config.xml上留下了以下行：

<preference name="SplashScreenDelay" value="30000" />
<preference name="ShowSplashScreenSpinner" value="false" />
<preference name="AutoHideSplashScreen" value="false" />

因此，在iOS上，它无法隐藏启动屏幕，因此删除了这些行并添加了：

<preference name="AutoHideSplashScreen" value="false" />

让它发挥作用，对我来说唯一奇怪的是，在Android上，这种行为并不存在，但现在一切都如预期一样。

Answer 2

我在两个平台上都有几个应用程序，我可以确认平台之间没有这样的差异；性能应该相似。

我认为在隐藏启动屏幕之前，您需要检查您的代码，看看发生了什么。然后通过删除/添加功能来缩小范围，看看问题在哪里

如果你使用特定于ios的插件，这可能是一个原因。此外，根据平台的不同，一些插件可能需要不同的配置。

如果不调试您的代码，很难说出问题可能在哪里。我鼓励创建一个空项目，并不断添加您的功能，以查看瓶颈在哪里。如果我们能够确定具体问题，我们可能会帮助解决它，但在不知道瓶颈的情况下，很难说什么。。。

不管怎样，与您怀疑的实际设备相比，模拟器总是会更慢