AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.dayu.message">

    <application
        android:allowBackup="true"
        android:label="@string/app_name"
        android:supportsRtl="true">
        <activity android:name="com.dayu.message.ui.activity.TestActivity" />
        <activity android:name=".ui.activity.MessageDetailActivity"/>
    </application>

</manifest>