[Android] mobile guard number attribution query completed
•
Android
The regular expression completes number verification,
^Starting with a, [] character set (matches any character in brackets), \ D is any number, {n} indicates how many times it occurs, and $ends
The regular ^ 1 [34568] \ d{9} $, starting with 1, the second number is 34568, and the remaining nine are numbers, ending with numbers
Call the match() method of the string object. Parameters: regular (the slash \ inside needs to be escaped)
Text input direct query
Call addtextchangedlistener() method of EditText object to add listener. Parameter: textwatcher object
The anonymous inner class implements the textwatcher interface, overrides the ontextchanged method, and passes in the charsequence object
Query the database and display the results
The content of this article comes from the network collection of netizens. It is used as a learning reference. The copyright belongs to the original author.
THE END
二维码