启动画面后，白屏显示约20秒钟，然后显示主页。 然后，我尝试使用以下方法构建我的应用程序：
ionic cordova build android --prod --release
该应用程序加载速度非常快，但大多数插件均无法正常运行（本机存储和admob）。我的配置：
<?xml version='1.0' encoding='utf-8'?>
<content src="index.html" />
<access origin="*" />
<allow-intent href="http://*/*" />
<allow-intent href="https://*/*" />
<allow-intent href="tel:*" />
<allow-intent href="sms:*" />
<allow-intent href="mailto:*" />
<allow-intent href="geo:*" />
<preference name="ScrollEnabled" value="false" />
<preference name="android-minSdkVersion" value="15" />
<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="AutohideSplashScreen" value="false" />
<preference name="SplashScreenDelay" value="6000" />
<platform name="android">
<preference name="loadUrlTimeoutValue" value="700000" />
<allow-intent href="market:*" />
<icon density="ldpi" src="resources/android/icon/drawable-ldpi-icon.png" />
<icon density="mdpi" src="resources/android/icon/drawable-mdpi-icon.png" />
</platform>
<plugin name="cordova-android-support-gradle-release" spec="^2.0.1">
<variable name="ANDROID_SUPPORT_VERSION" value="27.+" />
</plugin>
<plugin name="cordova-plugin-admob-free" spec="^0.13.0" />
<plugin name="cordova-plugin-camera" spec="^3.0.0" />
<plugin name="cordova-plugin-file" spec="^5.0.0" />
<plugin name="cordova-plugin-file-transfer" spec="^1.7.0" />
<plugin name="cordova-plugin-filepath" spec="^1.1.0" />
<plugin name="cordova-plugin-ionic-webview" spec="^1.1.16" />
<plugin name="cordova-plugin-nativeaudio" spec="^3.0.9" />
<plugin name="cordova-plugin-nativestorage" spec="^2.3.2" />
<plugin name="cordova-plugin-splashscreen" spec="^4.0.3" />
<plugin name="cordova-plugin-whitelist" spec="^1.3.1" />
<plugin name="ionic-plugin-keyboard" spec="^2.2.1" />
</widget>