What are intent-filters in Android?

Question

In my android app, I wanted to start an activity \'B\' from initial activity \'A\'. I have created classes for both of these. However when using following code to start B, I

Answer 1

There can be no two Lancher AFAIK. Logcat is a usefull tool to debug and check application/machine status in the behind. it will be automatic while switching from one activity to another activity.