How to enforce the custom permission on an Activity in Android?

Question

I have created a custom permission in android as:

Answer 1

Use android:permission attribute into activity tag.

Like below

<activity android:permission="com.master.me.CUSTOM_PERMISSION_TEST"
            android:name=".YourActivity"
            android:label="@string/activity_label" />

And you need to add uses-permission to your custom permission, when your other application needs to launch this activity.

<uses-permission android:name="com.master.me.CUSTOM_PERMISSION_TEST"/>

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An In-Depth Introduction to the Android Permission Model is a very good article to understand permission in Android. And How to use custom permissions in Android? is also a very good SO thread.