Android Studio -Launcher Activity not starting

Question

In my android app , my Launcher Activity is not starting. My Activity ( LoginActivity ) is not starting , instead my MainActivity is starting??

My Manifest :

 <application

>             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"
>             android:name=".App"
>             >
>             <activity android:name=".LoginActivity">
>                 <intent-filter>
>                     <action android:name="android.intent.action.MAIN" />
>     
>                     <category android:name="android.intent.category.LAUNCHER" />
>                 </intent-filter>
>             </activity>
>             <activity android:name=".HowActivity" />
>             <activity android:name=".RulesActivity" />
>             <activity android:name=".MainActivity" />
>             <activity android:name=".PayActivity" />
>         </application>
>     
>     </manifest>

And my Settings :

enter image description here

When I start my app from compiler , it goes to LoginActivity , but when i start from my phone it goes to Main Activity

Answer 1

If you previously installed your app with:

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

linked to your MainActivity then your Launcher remembered that MainActivity is your default activity. You can use activity-alias or simply uninstall your app and install again