Another activity comes up and covers half the screen size

Question

I have a button which on clicking opens another activity which comes up from below and covers half the screen. I searched about it but did not get any useful approach except the overridePendingTransition function which is useful in getting the animation on activity transition, but this didn't solve my problem. I know this is done in google hangout as shown in the images but can't find any useful solution.

When we press the button this activity comes up and covers half the screen size

when we scroll up the activity becomes our main activity

Any idea how this can be done?

Thanks

No not yet, but i wonder how can a drawer be used as an activity. I'm pretty new to android development. — Pardyot Shahi, Oct 06 '15 at 18:32
i think you need drawer, not an activity. Check some navigation drawer examples — Heshan Sandeepa, Oct 06 '15 at 18:37
The drawer would be having a fix size which it overlays from below. I've implemented it using two parallel views one of which has visibility="gone" and on clicking the button the view is set to VISIBLE with some animation. — Pardyot Shahi, Oct 07 '15 at 19:19
@MrsEd: im still searching how can achieve it.if possible plz provide some example — ρяσѕρєя K, Nov 21 '15 at 08:21
@MrsEd: yes right. you can also see gmail official app with material design also for reference. — ρяσѕρєя K, Nov 21 '15 at 09:47
@ρяσѕρєя K , i have answered this question please have a look and tell me in case of any doubts. — Pardyot Shahi, Nov 22 '15 at 06:17

Pardyot Shahi · Accepted Answer · 2015-11-28T11:00:14.863

After some searching i got exactly what i wanted with all the codes, but still the profile picture animation is remaining, rest the SlidingPanelLayout code can be seen here . It contains some detailed information with all the classes implemented which you can use directly. I think this will surely help you. :D

Edit: As said by @MrsEd i would like to add some code that helped me. This is the custom built DraggableLayout which you can use directly, the code can be found here. Then the activity must implement the onStopVerticalDragDown() of the DraggableLayoutCallbackListener inteface and set the content view as this xml file. Hope this clears all the doubt and makes it easier for anyone to implement their own custom built DraggableLayout without using any third party library. :D