<service#com.microsoft.appcenter.push.TokenService>.：需要为元素AMM0000显式指定导出的针对Android 12的应用程序

Question

我已经更新了目标从30到31(和to 12)面对以下问题。

java.exe error AMM0000: android:exported needs to be explicitly specified for element <service#com.microsoft.appcenter.push.TokenService>. Apps targeting Android 12

在我的应用程序im中，我使用了firebase推送通知服务，并添加了所有与通知相关的服务。在Andriodmanifest.xml中使用的下面的代码im

          android:installLocation="preferExternal"
          package="com.edmatix.parent.shemida"
          android:versionName="production.release.1.0.0.0"
          android:versionCode="20220818">
  <uses-sdk android:minSdkVersion="17" android:targetSdkVersion="31" />
  <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
  <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
  <uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />
  <uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
  <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
  <uses-permission android:name="android.permission.INTERNET" />
  <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
  <application android:label="SHEMIDA INTERNATIONAL SCHOOL" android:requestLegacyExternalStorage="true" android:preserveLegacyExternalStorage="true"  android:icon="@drawable/SHEMIDA_Launcher" android:networkSecurityConfig="@xml/network_security_config">
    <meta-data android:name="com.google.android.geo.API_KEY" android:value="AIzaSyAnvG581Y_oVWbDcwYNDy6v4CfRdtmU2CY" />
    <uses-library android:name="org.apache.http.legacy" android:required="false" />
    <receiver android:name="com.google.firebase.iid.FirebaseInstanceIdInternalReceiver" android:exported="false" />
    <receiver android:name="com.google.firebase.iid.FirebaseInstanceIdReceiver" android:exported="true" android:permission="com.google.android.c2dm.permission.SEND">
      <service android:name="com.microsoft.appcenter.push.TokenService" android:exported="true"/>
      <service android:name="crc646c47bac7b09c0b0e.MyFirebaseIIDService" android:exported="true"/>
        <service android:name="crc646c47bac7b09c0b0e.MyFirebaseMessagingService" android:exported="true"/>
          <receiver android:name="crc64a93b901f58a35d0f.PushReceiver" android:exported="true"/>
            <service android:name="crc6494e14b9856016c30.PNFirebaseIIDService" android:exported="true"/>
              <service android:name="crc6494e14b9856016c30.PNFirebaseMessagingService" android:exported="true"/>
      <intent-filter>
        <action android:name="com.google.android.c2dm.intent.RECEIVE" />
        <action android:name="com.google.android.c2dm.intent.REGISTRATION" />
        <category android:name="${applicationId}" />
      </intent-filter>
    </receiver>
  </application>
</manifest>```



Kindly help on this. im new to xamarin forms

Answer 1

造成这一问题的原因:该项目的compileSdkVersion和targetSdkVersion已经升级到31甚至更高。但是，清单文件包含intent-filter的组件(就像上面的intent-filter一样)没有明确地设置android:Exported，然后就会出现这个错误。

解决方案:将compileSdkVersion和targetSdkVersion设置为31以下。