How to solve error “Default Activity Not Found” occurred when starting my application from Service?

Question

I need to start my Android Application using Service and after start an Activity from that Service. First

Answer 1

Put this in your Activity in manifest

 <activity android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN"/>

            <category android:name="android.intent.category.LAUNCHER"/>
        </intent-filter>
    </activity>

Answer 2

android.intent.action.MAIN means that this activity is the entry point of the application, i.e. when you launch the application, this activity is created.

android.intent.category.LAUNCHER says that entry point should be listed in the application launcher

So you need to add that in your manifest. Just change:

<activity android:name=".MainActivity"></activity>

to

<activity android:name=".MainActivity">
    <intent-filter>
        <action android:name="android.intent.action.MAIN"/>
        <category android:name="android.intent.category.LAUNCHER"/>
    </intent-filter>
</activity>

Answer 3

Please refer below link. I hope this helps

https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=4&ved=0ahUKEwjsytHAhLLXAhWDuo8KHa4kAjoQFgg2MAM&url=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F15825081%2Ferror-default-activity-not-found&usg=AOvVaw0HThKZRxKk9ET-NdnVwEfR