CATEGORY_LAUNCHER : The activity can be the initial activity of a task and is listed in the top-level application launcher. action. … LAUNCHER are the ones that are used to specify what activity gets launched when the user presses your app icon or selects it from the running list of apps.

How does Android define activity in manifest?

To declare your activity, open your manifest file and add an <activity> element as a child of the <application> element. For example: <manifest … > The only required attribute for this element is android:name, which specifies the class name of the activity.

How do I change the default activity in Android?

Go to AndroidManifest. xml in the root folder of your project and change the Activity name which you want to execute first. If you are using Android Studio and you might have previously selected another Activity to launch. Click on Run > Edit configuration and then make sure that Launch default Activity is selected.