Ionic ios 应用程序在 android 上真的很慢但很快
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【中文标题】Ionic ios 应用程序在 android 上真的很慢但很快【英文标题】：Ionic ios app is really slow but fast on android 【发布时间】：2020-12-21 15:54:24 【问题描述】：我用 ionic 创建了一个应用程序，它几乎完成了（它是一个购物车商店应用程序）。现在我想构建应用程序，我正在使用以下命令：
ionic cordova build --release --prod --verbose XXXXX
在为 android 构建应用程序时（在签名等之后），应用程序在启动屏幕上需要 3 或 4 秒，这是可以接受的时间，但是当我使用相同的命令为 ios 构建时，问题就出现了，我试图在 XCode 中测试该应用程序并且它可以工作，唯一的问题是该应用程序需要 30 秒，这使该应用程序无法使用，我可以弄清楚原因。
编辑：我也认为问题出在模拟器上，但我也尝试在设备上运行应用程序，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
JSON 包
"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="test@test.com" 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 src="resources/ios/icon/icon.png" />
<icon src="resources/ios/icon/icon@2x.png" />
<icon src="resources/ios/icon/icon-40.png" />
<icon src="resources/ios/icon/icon-40@2x.png" />
<icon src="resources/ios/icon/icon-40@3x.png" />
<icon src="resources/ios/icon/icon-50.png" />
<icon src="resources/ios/icon/icon-50@2x.png" />
<icon src="resources/ios/icon/icon-60.png" />
<icon src="resources/ios/icon/icon-60@2x.png" />
<icon src="resources/ios/icon/icon-60@3x.png" />
<icon src="resources/ios/icon/icon-72.png" />
<icon src="resources/ios/icon/icon-72@2x.png" />
<icon src="resources/ios/icon/icon-76.png" />
<icon src="resources/ios/icon/icon-76@2x.png" />
<icon src="resources/ios/icon/icon-83.5@2x.png" />
<icon src="resources/ios/icon/icon-small.png" />
<icon src="resources/ios/icon/icon-small@2x.png" />
<icon src="resources/ios/icon/icon-small@3x.png" />
<icon src="resources/ios/icon/icon-1024.png" />
<splash src="resources/ios/splash/Default-568h@2x~iphone.png" />
<splash src="resources/ios/splash/Default-667h.png" />
<splash src="resources/ios/splash/Default-736h.png" />
<splash src="resources/ios/splash/Default-Landscape-736h.png" />
<splash src="resources/ios/splash/Default-Landscape@2x~ipad.png" />
<splash src="resources/ios/splash/Default-Landscape@~ipadpro.png" />
<splash src="resources/ios/splash/Default-Landscape~ipad.png" />
<splash src="resources/ios/splash/Default-Portrait@2x~ipad.png" />
<splash src="resources/ios/splash/Default-Portrait@~ipadpro.png" />
<splash src="resources/ios/splash/Default-Portrait~ipad.png" />
<splash src="resources/ios/splash/Default@2x~iphone.png" />
<splash src="resources/ios/splash/Default~iphone.png" />
<splash src="resources/ios/splash/Default@2x~universal~anyany.png" />
<icon src="resources/ios/icon/icon-20.png" />
<icon src="resources/ios/icon/icon-20@2x.png" />
<icon src="resources/ios/icon/icon-20@3x.png" />
<icon src="resources/ios/icon/icon-29.png" />
<icon src="resources/ios/icon/icon-29@2x.png" />
<icon src="resources/ios/icon/icon-29@3x.png" />
<icon src="resources/ios/icon/icon-24@2x.png" />
<icon src="resources/ios/icon/icon-27.5@2x.png" />
<icon src="resources/ios/icon/icon-44@2x.png" />
<icon src="resources/ios/icon/icon-86@2x.png" />
<icon src="resources/ios/icon/icon-98@2x.png" />
<icon src="resources/ios/icon/icon-108@2x.png" />
<splash src="resources/ios/splash/Default-2688h~iphone.png" />
<splash src="resources/ios/splash/Default-1792h~iphone.png" />
<splash src="resources/ios/splash/Default-2436h.png" />
</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>
应用路由模块
@NgModule(
imports: [
RouterModule.forRoot(routes,
preloadingStrategy: PreloadAllModules,
),
],
exports: [RouterModule],
)
export class AppRoutingModule
其中路线是我的所有路线，我有 38 个视图。
在我的 App 模块中，我也加载了所有服务，但我认为这并不重要，因为 angular 也应该很慢。
感谢您阅读本文。
【问题讨论】：
【参考方案1】：基本上我发现了问题，之前的app开发者在config.xml留下了以下几行：
<preference name="SplashScreenDelay" value="30000" />
<preference name="ShowSplashScreenSpinner" value="false" />
<preference name="AutoHideSplashScreen" value="false" />
因此在iOS 上隐藏启动画面的功能不起作用，因此删除这些行并添加：
<preference name="AutoHideSplashScreen" value="false" />
让它工作，对我来说唯一奇怪的是Android 上没有这种行为，但现在一切都按预期工作。
【讨论】：
【参考方案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种差异；性能应该差不多。
我认为您需要在隐藏启动画面之前检查您的代码并查看发生了什么。然后通过删除/添加功能来缩小范围，看看问题出在哪里。
如果您使用 ios 特定插件，这可能是一个原因。此外，某些插件可能需要不同的配置，具体取决于平台。
如果不调试您的代码，就很难说问题出在哪里。我鼓励创建一个空项目并继续添加您的功能以查看瓶颈在哪里。如果我们能确定具体问题，我们可能会帮助解决它，但不知道瓶颈，很难说什么......
无论如何，与您怀疑的实际设备相比，模拟器总是会慢
【讨论】：
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