Xamarin.forms、Android 部署问题。 应用程序无法在模拟器和物理设备上部署

Question

UNHANDLED EXCEPTION: [MonoDroid] Java.Lang.RuntimeException: Unable to get provider androidx.core.content.FileProvider: java.lang.ClassNotFoundException: Didn't find class "androidx.core.content.FileProvider" on path: DexPathList[[zip file "/data/app/~~pZAuPuPF-r125lb9dLdbVw==/com.cfj.TrialwatchApp-RevQziFDZKEkLVVkaCkhEg==/base.apk"],nativeLibraryDirectories=[/data/app/~~pZAuPuPF-r125lb9dLdbVw

Answer 1

have you added below code under AndroidManifest.xml under Android Properties?

Please Add Below Code under Application Tag.

<provider android:name="androidx.core.content.FileProvider" android:authorities="yourpackagename.fileprovider" android:grantUriPermissions="true" android:exported="false">
        <meta-data android:name="android.support.FILE_PROVIDER_PATHS" android:resource="@xml/filepaths" />
</provider>

Answer 2

Please try to update your xamarin forms and Xamarin.Essentials nuget to the latest ones and try again.

If the problem persist, you can recheck if you have added the following code under Application tag as Krunal Bagadia said.

<provider android:name="androidx.core.content.FileProvider" android:authorities="${applicationId}.provider" android:exported="false" android:grantUriPermissions="true">
        <meta-data android:name="android.support.FILE_PROVIDER_PATHS" android:resource="@xml/provider_paths" />
</provider>