How do create this gmail app effect on Honeycomb - android-fragments

Attached is the screenshot of the UI that I would like to have in my app. When I click on the listitems on the fragment on the left side I see a arrow pointing(question mark in red) on the list item which was clicked, I would like to know how can we achieve this in UI layout. Any special settings to be set?

I was looking at the same feature.
To implement similar, I'd suggest showing an image on the selected item in the list, this would require code rather than Layout XML, It would be controlled by the list fragment when an item is selected. That way you get the visual effect that the two fragments are related via the arrow image.
Did you end up giving it a go for yourself?

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How to display a button inside a b-tabs in boostrap vue?

this is the situation:
We have a series of tabs, which have card-like elements inside. The designer choose to push a "change display" feature which hides part of the content of the cards (image, description) to increase the displayed number per time.
The problem:
The designer choose to put this change display button, in the tabs section. Like (Tab - Tab - Button).
After a couple hours of research, I couldn't find a way to place a button inside the <b-tabs> component (which has X number of <b-tab>). I had to use float, position absolute and use coordinates to place the button, but obviously this is not a desirable solution.
Is there a better approach to this problem? Or it's possible to place the button inside the component itself?
Thanks.
Edit:
#Anatoly gave the answer !
Thanks.
Try to use tabs without a content, described here

How can I give CSS styles to each instance of the same dynamic component angular8

Im new with Angular and I am creating a chat application with the same facebook behavior. I need each chat box to appear at the bottom of the screen (right now they appear in the middle of the screen) and as a user is selected the box that comes out You should leave next to the one that is already there.
I also need that when those chat boxes occupy the entire space, something similar to the image attached is shown, a button where the first boxes that you select come out so that you can select and resume that conversation. In the following link I have my application working. Could someone help me? The application code and the demo can see it here.
The image of the behavior that I want is the following:

Sencha Touch 2 adding buttons to toolbar/titlebars

Can anyone tell me how I might add buttons, or other components, to a title/tool bar without using the items array? For months I've been struggling to find a way to make the bar on all my views contain the same user buttons and icons.
It's a struggle mostly on List item detail views where only a back button shows. I want the back button but also own buttons on the same bar. This is so my app has a uniform look and accessible functionality across the entire build.
Toolbar and TitleBar extend Ext.Container.
In Sencha Touch containers always store their components inside the items array.
If you want to have a toolbar that always look the same just create your own by extending Ext.Toolbar. Use the initialize method of such extended Toolbar to add the buttons/icons.
To use it with a list you can create a wrapping container, which contains the extended toolbar and the list.

Designing Custom Drop Down with mulitple rows and columns

I have a requirement like for the drop down as shown. Could any one help me in achieving this.
Briefing:
On click of the button a pane should be opened which contains rows and columns containing text, on click of it appropriate action need to take place. The source can be dynamic too....
There are many techniques for acheiving this design. You could do it purely with html and css by having an image that looks like a dropdown popup an absolutely positioned div underneath. Or you could use the asp.net ajax control toolkit control called "PopupControl" that essentially abstracts all the html/css away allowing you to just specify a target panel. There are also various jquery plugins, here is one from abeatifulsite.

Link jQuery-UI/Kendo-UI to make live changes to elements in page designer

I apologize if the title was not clear enough. I am working on a project where a user can design a page (something like Wix). I am continuing on a project left in-complete by some developer. The sequence of action is.
The user clicks on a link which adds an element on the page (e.g. textElement, picture, slider...)
There is an edit button for each element. Clicking which opens a dialog box.
On the dialog box there are sliders and color picker drawn using Kendo-UI. Using them the user can change the style settings for the element (e.g Font-Color, BG-Color, Font Size...)
What I want now is to apply/show the changes live on that element. I have the id available for each element. I can bind each of the style selectors and apply the changes live to the text element. But that does not seem the right choice as in future we might add another style selector in the dialog box, and that would mean adding the code for binding this new selector.
What I wanted to know was that is there an alternate or preferably easy way to do this?
Regards
Share some code with the basic idea that you follow, cause it's not getting clear what you did. It sounds like you can use the MVVM framework feature to help you for that.

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