Getting a specific data from the string received

[Sangamithra Senthil]

Greeting.

I'm new to flutter. I need to create an App in which one of the operation is to receive SMS and need to display the data in the app.

For example, if I receive 

" POWER BACK

3PHASE SUPPLY

AUTOMODE ON

RY: 425 

YB: 425 

BR: 430 

SIGNAL: 033 "

Here, only numbers  will be differs from each SMS i receive. I need to get only the numbers to be displayed in my app. Like : to display - 1.425  2.425  3.430 4. 033

My question is how to get only numbers from this received SMS?

[harivamshi diddiga]

https://rrtutors.com/tutorials/Read-Inbox-Messages-Flutter-SMS-Retriever

this might help. after retrieving the messages do some regex matching to retrieving all numbers.

FROM...
D. Harivamshi

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[dickinso...@gmail.com]

Have a look at this Medium post that shows several options to address your problem. https://medium.com/flutter-community/exploring-string-methods-in-dart-324f747b8d15

Personally I would look at using the toSet() method to 'subtract' the characters in the sms that are always the same and then split the 4 sets of digits, that remain, into separate variables. 

[dickinso...@gmail.com]

Or allMatches 

[Sangamithra Senthil]

Thanks for the reply sir,  I'm new to flutter so I don't know how to use toSet() method can you  
give me some example codes on how to subtract the code...!