manually resizable and overlay square in the screen with flutter - android

hi I'm trying to make a widget like the one in this image"(green one) with flutter , the main function is being resizable and overlaying.
is there any idea to achieve this ?
thanks

i found a pretty good package witch satisfy my needs ,at least for one part of my question.
here is a link :https://github.com/zamaniafshar/Flutter-Resizable-Widget.git

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I need to create horizontal selector like in Uber android app (Please check screen shot). But that selector list must be dynamic means (Array[1,2,3,4...]). Please check screen shot:
I trid a lot but nothing worked with grate UI like this, I have trid also this link: check link. Its worked but bad UI because its uses paint to create things. Please help me to achieve same thing. I am trying it for payment selection option based on region. So its must be dynamic.
You can use android ui widget seekbar for this purpose and then customize it.
Also you can refer the following example
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How would I draw this shape in Android using xml?

I'm porting one of my iOS apps over to Android (which I'm pretty new to), and I was wondering how I would draw this shape in Android using XML:
I want to recreate the shape (the white object) at the bottom of a tableView. The image attached is a screenshot of the bottom of a UITableView.
Any help would be greatly appreciated if you need any more info just let me know.
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EDIT:
Sorry I wasn't totally clear, I'm actually trying to recreate the slight arch at the bottom of the table. Since it's so slight, you may not be able to see it with a quick glance.
It seams to me that you want to "lift" your table up a little bit. If so, you have to implement this attribute to your tableView:
android:elevation="2dp"
or in java:
tableview.setElevation(2);
My opinion when reading this question: Stop trying to make your android apps look like iOS apps !!!
If you still want to do it.
Just have the background color for your activity to that color and set the layout_margin to either 2 or 4.
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Creating a Sliding Scale Similar to Noom

I want to create a sliding weight scale for my app like the one in screen shot. I cannot figure out which Layout or UI components to use. Please Suggest a way or tutorial to do this.
Thanks
Link to screenshot
Did not get any reference so I tried creating it on my own. Check it out in Github.
SlidingScale - GitHub

Android : how to make View Flow with bottom shadow like iphone

Going straight forward..
1.what i achieved so far (thanks to pakerfeldt- https://github.com/pakerfeldt/android-viewflow)
2.what i need actually
so almost done..but you can see bottom shadow functionality (at viewflow) in iphone screen (and it can pull down and can see entire image). so does anyone achieved something similar in android ?
any other library for reference ?
Thanks in advance. answer will be appreciated.
Thanks.

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I know that this question was asked before but i'm using it in widget so i can't make a custom class (such as VerticalTextView).
Any idea how can i make it using xml?
Really in widget, I think there is only one way - try to use rotate. Similar example. Hope it's help.

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