[大家好，我用django构建了一个API，我可以在平板电脑上使用它，但是将我的智能手机与android pie一起使用时，每次对api的请求都会收到“未知错误”消息。我使用python manage.py runserver 0.0.0.0:8000命令在同一网络内的其他设备上运行django项目，因为我是在家中在网络上运行此项目。
settings.py（django项目）
ALLOWED_HOSTS = ['I got the ip with ipconfig']
CORS_ORIGIN_ALLOW_ALL=True
在Ionic上，我发送下一个标题
setHeaders: {
'Authorization': `Bearer ${token}`
}
Ionic上的config.xml
<?xml version='1.0' encoding='utf-8'?>
<widget id="io.ionic.starter" version="0.0.1" xmlns="http://www.w3.org/ns/widgets" xmlns:cdv="http://cordova.apache.org/ns/1.0">
<name>MyApp</name>
<description>An awesome Ionic/Cordova app.</description>
<author email="[email protected]" href="http://ionicframework.com/">Ionic Framework Team</author>
<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="19" />
<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="3000" />
<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:networkSecurityConfig="@xml/network_security_config" />
</edit-config>
<resource-file src="resources/android/xml/network_security_config.xml" target="app/src/main/res/xml/network_security_config.xml" />
<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" />
<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" />
</platform>
<platform name="ios">
<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/[email protected]" width="114" />
<icon height="29" src="resources/ios/icon/icon-small.png" width="29" />
<icon height="58" src="resources/ios/icon/[email protected]" width="58" />
<icon height="87" src="resources/ios/icon/[email protected]" width="87" />
<icon height="20" src="resources/ios/icon/icon-20.png" width="20" />
<icon height="40" src="resources/ios/icon/[email protected]" width="40" />
<icon height="60" src="resources/ios/icon/[email protected]" width="60" />
<icon height="48" src="resources/ios/icon/[email protected]" width="48" />
<icon height="55" src="resources/ios/icon/[email protected]" width="55" />
<icon height="29" src="resources/ios/icon/icon-29.png" width="29" />
<icon height="58" src="resources/ios/icon/[email protected]" width="58" />
<icon height="87" src="resources/ios/icon/[email protected]" width="87" />
<icon height="40" src="resources/ios/icon/icon-40.png" width="40" />
<icon height="80" src="resources/ios/icon/[email protected]" width="80" />
<icon height="120" src="resources/ios/icon/[email protected]" width="120" />
<icon height="88" src="resources/ios/icon/[email protected]" width="88" />
<icon height="50" src="resources/ios/icon/icon-50.png" width="50" />
<icon height="100" src="resources/ios/icon/[email protected]" width="100" />
<icon height="60" src="resources/ios/icon/icon-60.png" width="60" />
<icon height="120" src="resources/ios/icon/[email protected]" width="120" />
<icon height="180" src="resources/ios/icon/[email protected]" width="180" />
<icon height="72" src="resources/ios/icon/icon-72.png" width="72" />
<icon height="144" src="resources/ios/icon/[email protected]" width="144" />
<icon height="76" src="resources/ios/icon/icon-76.png" width="76" />
<icon height="152" src="resources/ios/icon/[email protected]" width="152" />
<icon height="167" src="resources/ios/icon/[email protected]" width="167" />
<icon height="172" src="resources/ios/icon/[email protected]" width="172" />
<icon height="196" src="resources/ios/icon/[email protected]" width="196" />
<icon height="1024" src="resources/ios/icon/icon-1024.png" width="1024" />
<splash height="480" src="resources/ios/splash/Default~iphone.png" width="320" />
<splash height="960" src="resources/ios/splash/Default@2x~iphone.png" width="640" />
<splash height="1024" src="resources/ios/splash/Default-Portrait~ipad.png" width="768" />
<splash height="768" src="resources/ios/splash/Default-Landscape~ipad.png" width="1024" />
<splash height="1125" src="resources/ios/splash/Default-Landscape-2436h.png" width="2436" />
<splash height="1242" src="resources/ios/splash/Default-Landscape-736h.png" width="2208" />
<splash height="2048" src="resources/ios/splash/Default-Portrait@2x~ipad.png" width="1536" />
<splash height="1536" src="resources/ios/splash/Default-Landscape@2x~ipad.png" width="2048" />
<splash height="2732" src="resources/ios/splash/Default-Portrait@~ipadpro.png" width="2048" />
<splash height="2048" src="resources/ios/splash/Default-Landscape@~ipadpro.png" width="2732" />
<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="2436" src="resources/ios/splash/Default-2436h.png" width="1125" />
<splash height="2732" src="resources/ios/splash/Default@2x~universal~anyany.png" width="2732" />
</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" />
</widget>
现在可以正常工作了，我注意到我的应用程序可以在平板电脑上运行，但是无法将我的智能手机与android pie一起使用，因此我在config.xml上替换了我的代码以允许没有https的连接
将这些行替换为config.xml
<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>
最终运行
Ionic cordova platform remove android
Ionic cordova add platform android --save
Ionic cordova build android