Software back button android

Question

I need a back button with same functionality as default back button of device but inside of app.

Answer 1

Android activities are stored in the activity stack. You can go back by just finishing the current activity:

add an onClick listener to your button in the activity xml like this:

 <Button
     android:layout_height="wrap_content"
     android:layout_width="wrap_content"
     android:text="@string/self_destruct"
     android:onClick="selfDestruct" />

then create a method in your activity with the same name you specified in the xml

 public void selfDestruct(View view) {
     finish()
 }

You can read more in the docs.