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QUESTION
I am developing a pretty basic app in Dart that gives you a random sentence when you click a button. But sometimes this sentence is too big or too small and the button changes its position according to the size of the text above it. How can I make the button stay in a fixed position no matter where the text is?
...ANSWER
Answered 2021-Mar-03 at 01:51Here's a potential solution (although there are many).
The central Padding
widget, surrounding your changing text, resizes itself according to its child (a Text
Widget in this case).
When the text is less, Padding
takes up less space. When text is larger, Padding
will take up more space, in order to fit the Text
widget.
Column
children take only the amount of space they need, so when one of the children changes size, it will affect other child widgets in the Column
.
By wrapping the Padding
/Text
widgets in a SizedBox
with a fixed height value, that central child in the Column
no longer changes size when text length changes. This way, your last child in Column
, the Button
containing widget, will remain in the same position relative to the other children & on screen.
I've wrapped the center and bottom Column
children in Containers and added colors to help visualize how much space each widget is taking and how it is aligned.
Note that when Container
alignment is center, it will expand to fill as much space as it can.
QUESTION
How can I remove the \n
line break tag from a string using regular expressions?
I tried using stringr::str_replace(), but failed.
For example, I have the string:
...ANSWER
Answered 2020-Apr-27 at 23:32We can use str_remove_all
which would make it compact instead of using the replacement argument in str_replace_all
with ""
QUESTION
I'm trying to populating a ListView at run-time with DynamicAppearance. The text parts work well, but the image is always the same as the last one. This code adds to all items the same image. I want to add a image to just one item.
...ANSWER
Answered 2020-Mar-03 at 20:50First of all, thank so much for helping me, Remy Lebeau. As he said in the comments, the problem was in pointing all items to the same bitmap and not synchronizing the segment when changing something in the user interface. (Not sync generates some access violation errors) The code:
QUESTION
Following exactly the example below, can someone help me to work the position: sticky
Today, the next date is positioning itself above the current date.
In this way, the opacity and shadow of the date is getting 100%, generating a grotesque vision if there are many dates.
I want the previous date, scroll up and give way to the next date.
All in CSS
...ANSWER
Answered 2019-Mar-07 at 22:16If you want to avoid such overlap you need to consider more container where you wrap each date add its messages in the same container. Doing this, the previous day will scroll before the next one become sticky
QUESTION
i have a activity with SlidingTab and when I click the back button of the cell phone the app just crash and show this error:
- I am using firebase, I don't know if this matters.
This is the Logcat error:
...ANSWER
Answered 2018-Oct-17 at 18:46Can't convert object of type java.lang.String to type br.com.tecmafandroid.projeto.tecmaf.model.Contato
It's probably not the same type which you're setting to ArrayList
:
QUESTION
I am having a problem with the expandablelistview. All the tutorials I've seen regarding the parent item have only one item. In my case I'm doing with multiple fields (name and comment) in both parent and child. How should I proceed?
my json data
...ANSWER
Answered 2018-May-03 at 22:00I've added code that will parse the JSON response and populate the data for the adapter. It is a complete example. But it needs an XML file with an ExpandableListView named "list".
I borrowed a basic adapter from another stackoverflow post. It only displays basic text, not the entire conversation. But it is probably enough code to get you unblocked. But you'll need to replace the simple views like: android.R.layout.simple_list_item_1 with your own views.
In the real app, it is probably best to parse the JSON data in an ASyncTask.
QUESTION
it's common to have json keys without spaces. I can access a value of a json simply calling it's key. But if my json looks like
...ANSWER
Answered 2017-Sep-30 at 07:37You just do:
QUESTION
in my layout file at navbar i have item called message . i want to show number of message above it actually i can build a hidden element and acho my variabe inside it and get it again and append it to empety element in item with Jquery ... but i want know the simpler and shorter way if there is any
i get message count in beforeAction like this
...ANSWER
Answered 2017-Sep-05 at 13:15Do the fact you already 'encodeLabels' => false,
in Nav::widget
you could concat the value in the label content
QUESTION
Problem: I have a bunch of txt files written in Portuguese on a Windows machine using NotePad. Some of them seem to have been encoded as ANSI. When I open these files using gedit
on Ubuntu, some of them contain boxes containing 008D
(see screenshot). This is after converting them to UTF-8.
When I print the file contents to the terminal using cat
, head
or more
, this is the output of the same file. Note that everything from última vez up to and including the strange character isn't printed to the terminal.
ANSWER
Answered 2017-Mar-29 at 12:49Found the magical keywords ('remove unicode string using sed'). This does the trick: https://stackoverflow.com/a/8562661/1331521:
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