例外情况是清楚的。您需要设置机器人：出口=真正的在AndroidManifest.xml文件中，您声明此活动

The exception is clear. You need to set android:exported="true" in your AndroidManifest.xml file where you declare this Activity.

修改

<activity
    android:name="com.example.lib.MainActivity"
    android:label="LibMain" 
    android:exported="true">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" >
        </action>
    </intent-filter>
</activity>