The application I'm developing does not appear or open in my android device

Question

I am currently building an application in Android Studio. When I run my application and Android Studio installs it on my device through the USB, the application doesn't open and doesn't show up in the Apps list of my device. Which is strange because when I travel to Settings > Application Manager in the device, it shows my application as if installed but I can't open it. I also have tested the application in the Nexus emulator and it opens up just fine.

Answer 1

you're missing a intent-filter in your "main" activity so that it can show in the launcher. below is an example:

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

replace "MainActivity" with the name of the activity you want to show in the launcher.