"我设置了 android:exported 但我仍然收到错误：android:exported 需要明确指定<receiver>"

Question

I am moving from SDK version 30 to 31 and I add android:exported in intent-filter but still I am getting this error:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.mycompany.webviewapp">

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

    <application
        android:name=".App"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <!-- Sample AdMob App ID: ca-app-pub-3940256099942544~3347511713 -->
        <meta-data
            android:name="com.google.android.gms.ads.APPLICATION_ID"
            android:value="ca-app-pub-3940256099942544~3347511713"/>

        <activity android:name="com.mycompany.webviewapp.SplashActivity"
            android:exported="true"
            android:screenOrientation="portrait">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name="com.mycompany.webviewapp.MainActivity"
            android:exported="true"
            android:screenOrientation="portrait">
            <intent-filter>
                <category android:name="android.intent.category.LAUNCHER"/>
                <action android:name="android.intent.action.VIEW"></action>
            </intent-filter>

        </activity>

        <service android:name="com.mycompany.webviewapp.FCM.MyFirebaseMessagingService">

        </service>

        <meta-data android:name="applovin.sdk.key"
            android:value="sdk api here"/>

    </application>

</manifest>

Answer 1

The reason is because some of the dependency libraries that you're using have elements which do not have "android:exported" attribute.

Answer 2

I resolve my issue. I just check the merged manifest and look for reciver. In onesignal, I found out reciver with intent filter defined without android:exported. I just add android:exported="false".

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