Add main activity into android manifest

Author: bloderxd

app/src/main/AndroidManifest.xml

@@ -1,5 +1,6 @@
 <?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.example.bloder.deck">
 
     <application
@@ -8,6 +9,18 @@
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/AppTheme"></application>
+        android:theme="@style/AppTheme">
+
+        <activity android:name=".MainActivity"
+            android:launchMode="singleTop"
+            android:screenOrientation="portrait">
+            <intent-filter tools:ignore="AppLinkUrlError">
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+            </intent-filter>
+        </activity>
+
+    </application>
 
 </manifest>