My AndroidManifest.xml: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionName="1.0" android:versionCode="1"> <application android:allowBackup="true" android:icon="@mipmap/appicon" android:supportsRtl="true" android:label="上课系统"></application> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.CAMERA" /> <uses-permission android:name="android.permission.RECORD_AUDIO" /> <uses-permission android:name="android.permission.RECORD_VIDEO" /> <uses-sdk android:minSdkVersion="29" android:targetSdkVersion="29" /> </manifest> Debug is can use, Release no use. Camera.Maui is 1.2.1 version. .net core 7.0.