Say I had text that the user was inputting into a big text box. I also want my app to be testing if any of the text inputted is in an array, and if it finds them then style these differently (For example highlight them wit ha yellow background). So if the phrases I was looking for were 'cake is great', 'people are awful' and 'scooters are the best', and the user wrote 'I really love my cake, cake is great' is it possible for flutter to see this text, and add a text style purely to the last part of the sentence, or otherwise style it differently?
How would I go about doing this?
Using substrings should do the trick, if anything else is trying to do something similar look here!
https://pusher.com/tutorials/styled-text-flutter#text-styling-with-the-text-widget
Related
I am planning to create a rich text editor in Flutter for a personal application. I know there are already some options like zefyr. However, it is still in dev preview and I want to build something a bit different.
The features of the text editor will be that users can add images, bolden text, add lists, italicize text, etc. Just basic text editor things.
Where I am having issues is in the text input side of things. The flutter default text input only allows one style of text per text field. So that would pose a great challenge when it comes to inline styling. Also, a text field cannot have an image inside it, so that is another problem.
If anyone has any ideas on how to go about this, it will be great for a start.
So, I am really asking for the approach to create the editor because it is not as simple as creating one in html
I would like to make a hybrid app using Flutter. One particular kind of component I'm looking at sounds something like this:
A Chinese character like 家 (which means home) is shown
When an user clicks on the character, it can display its pronunciation (jia)
The user also has the option to click to play the pronunciation
The user can also choose to open a window where an animation of how the character is being written is played.
So for a sentence like: 蓝天是白云的家（literally translated as: The blue sky is the home of the white clouds）, each of these 7 characters can be individually clicked and users can choose to display / play pronunciation / show how they are written.
Normal static text won't be rich enough to display all these information. My current idea is to make every character a customized widget with such data embedded within.
This task can be quite huge if each Chinese character (there are approximately 5000 characters that are commonly used) has its own rich data format.
Any suggestions on how to approach this problem in an efficient manner in Flutter?
Thanks in advance!
There are a few ways to do this. Using widgets could definitely be an option, but that's probably going to cause you issues in the long run.
Let's break this into two parts:
1: Displaying the text
Instead of using widgets, I'd suggest using a RichText with many TextSpan children. You could create a custom class that accepts the string, splits it into characters, and puts each character in its own TextSpan. By using TextSpan.recognizer. You could then either use a TapGestureRecognizer with onTap to show the information when tapped if you don't need the position at which it was tapped, or onTapDown/onTapUp if you do (for example if you want to show a popup right where the click happened as opposed to something like a bottom sheet that comes up).
2: Showing the information
Because you're wanting to deal with a large amount of characters, I'd suggest not doing it all in code but instead handling the characters in some other sort of format that can easily be manipulated, for example JSON. That way you can do things like splitting the data it into blocks and loading them as needed, and/or getting them from a web server.
Your data could look something like:
{
"家": {
"pronunciation": "jia",
"audio": "path/to/sound.m4a",
"animation": "path/to/animation.gif"
},
...
}
You could theoretically even do things like start loading the pronunciation files when the character is first shown or when they click on it.
When the character is tapped, you could:
check if data in cache
load the data if needed from network/disk
open bottom sheet or popup displaying the pronunciation info + buttons for audio & drawing animation
I have a list that I want to display some text as bold and other parts not bold. First of all I have been accomplishing this when not inside of a list by just making a bunch of labels and then manually going through the text adding \n and spaces for formatting, which takes forever. If there is an easier way of doing that I would love to know. Anyway my question is how can I add formatted text to a list.
So instead of those individual text elements I want to add multiple formatted text elements in place of one.
how can I add formatted text to a list
sorry, that's unfortunately not possible with App Inventor
you can take a look at this App Inventor Classic example, which uses some HTML to do the formatting
Ok im struggling to find anything on this as im probably searching the wrong keywords.
I have a backed form thats use to display content on a page. When entering the details i want to be able to use a basic text editor to style the text, like bold, bullets, underline.
On top of that i would also like to allow them to wrap section in paragraph tabs, apply a certain style i.e style id="x".
Its more for backend so it doesnt have to be really user friendly but if there was an uncomplicated way of showing the styles in the form as i apply them, basically a WYSIWYG view. If not i will settle for applying the styles without having to see all the hmtl and css tags in the editor but when the information is passed via the INSERT query it will show pass all the relevant code like My Style and so on.
Now im quite happy to spend the time learning how to do this if you point me in the right direction but i have no idea what keywords to search. Ideally if there is a script out there i can just edit to my needs would be great too rather than starting from scratch.
Finally since im learning php and mysql still keeping it dumbed down will help and also since my values im passing is going to be full of characters the code wont like what functions should i look up to pass the code and content into the database to avoid breaking the code
I'm not entirely sure what you mean, but it seems you can achieve what you want using an editor like for example TinyMCE in combination with JQuery?
With JQuery you can show/hide items and ander your css like
$("p").mouseover(function () {
$(this).css("color","red");
});
I need a functionality like in the iphone pdf reader.
i want that user select some text content and that content should be highlighted with yellow color.
Currently i am using text view and want to know that can i achieve same functionality in it.
or i have to shift to pdf ?
Please tell that how to achieve that in either of the two.
You can try NSAttributedString-Additions-for-HTML
Take a look at EGOTextView
A drop-in replacement for UITextView that amongst other things supports attributed strings. This would allow you to achieve your aim of selecting text, and then applying a style to that selection such as a yellow highlight.