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I am really new to React Native. When I try to bind Picker dynamically. For an item with data from the API, the error

[Unhandled promise rejection: TypeError: undefined is not a function (near '...marka_arr.map...')]

is shown. I believe the reason is before getting data, and it tries to render Picker. Can you help me to fix the error?

Code:

I'm not very good at HTML. In my app, I defined 4 buttons. After that, I added a drop box. But adding that, made the texts of buttons cut off at the middle. Before, the buttons were fine. Here is my code, what should I add to make the buttons symmetrical again?

HTML:

I am currently creating 12 containers for testing purposes, whose dimensions are randomly determined in proportion to the screen size of the device during application opening. I show them on the screen as the bottom element of the column structure in a SingleChildScrollView that I wrapped in a container. As you can see from the image, when I click on the top search bar, the keyboard normally opens, but when the keyboard is opened, the containers are resized. When the keyboard is closed, these are resized again.

What I want it to happen is that the containers are sized one time only at application startup. I want them not to be resized later.

Here is the function I wrote to create containers:

I keep getting the error below in my code where I am trying to display a newly edited and saved text after refreshing the page. I initialized the variable, made the access variable public but nothing worked. What am I missing here?

HTML: