Extract youtube channel id from channel url - android

Question

Example URL : https://www.youtube.com/channel/UCAoMPWcQKA_9Af5YhWdrZgw

I need only UCAoMPWcQKA_9Af5YhWdrZgw (Channel ID)

remove `https://www.youtube.com/channel/` (obviously). What is a problem? — Vladyslav Matviienko, Jul 04 '18 at 06:13
The url is from user input, so need to check the url as well. — Android Guy, Jul 04 '18 at 06:21
then there are 2 separate tasks: 1) check the URL (whether it has `https://www.youtube.com/channel/`); 2) remove `https://www.youtube.com/channel/` — Vladyslav Matviienko, Jul 04 '18 at 06:36

user2993505 · Answer 1 · 2019-01-31T21:17:29.267

Subhendu Mondal decision crashes on links like this.

// args after id

https://www.youtube.com/channel/UCAoMPWcQKA_9Af5YhWdrZgw?view_as=subscriber 

//minus sign in id

https://www.youtube.com/channel/UCQ18THOcZ8nIP-A3ZCqqZwA

so here is improved decision, also protocol group was removed from match result

^(?:http|https):\/\/[a-zA-Z-]*\.{0,1}[a-zA-Z-]{3,}\.[a-z]{2,}\/channel\/([a-zA-Z0-9_\-]{3,24})

var str = "https://www.youtube.com/channel/UCAoMPWcQKA_9Af5YhWdrZgw";
var pattern = /^(?:(http|https):\/\/[a-zA-Z-]*\.{0,1}[a-zA-Z-]{3,}\.[a-z]{2,})\/channel\/([a-zA-Z0-9_]{3,})$/;
var match = str.match(pattern);
console.log(match[1]);

UPDATE:

Here is the shortest way:

youtube.com\/channel\/([^#\&\?]*).*

score 2 · Answer 2 · answered Jul 04 '18 at 06:04

2

Parse the string into a URI:

    Uri uri = Uri.parse("https://www.youtube.com/channel/UCAoMPWcQKA_9Af5YhWdrZgw")
    String id = uri.lastPathSegment() //UCAoMPWcQKA_9Af5YhWdrZgw

answered Jul 04 '18 at 06:04

Udit

1,037
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score 1 · Accepted Answer · answered Jul 04 '18 at 07:07

This is the pattern you can use to capture the channel id and this will validate the url also

 ^(?:(http|https):\/\/[a-zA-Z-]*\.{0,1}[a-zA-Z-]{3,}\.[a-z]{2,})\/channel\/([a-zA-Z0-9_]{3,})$

I have no idea how to execute regex in android but sharing the regex url, you can check from here https://regex101.com/r/9sjMPp/1

Or a javascript code to perform

var str = "https://www.youtube.com/channel/UCAoMPWcQKA_9Af5YhWdrZgw";
var pattern = /^(?:(http|https):\/\/[a-zA-Z-]*\.{0,1}[a-zA-Z-]{3,}\.[a-z]{2,})\/channel\/([a-zA-Z0-9_]{3,})$/;
var matchs = str.match(pattern);
console.log(matchs[2]);
// output is UCAoMPWcQKA_9Af5YhWdrZgw

Hope you get the idea.

score 0 · Answer 4 · answered Jul 04 '18 at 07:46

You can use this regex for retrieving video ids from different types of youtube url.

String pattern = "(?<=watch\\?v=|/videos/|embed\\/|youtu.be\\/|\\/v\\/|\\/e\\/|watch\\?v%3D|watch\\?feature=player_embedded&v=|%2Fvideos%2F|embed%\u200C\u200B2F|youtu.be%2F|%2Fv%2F)[^#\\&\\?\\n]*";

Then generate a Pattern instance using the above regex, from which you can get a Matcher instance by using Pattern.matcher(videoLink).
Now the Matcher.find() will give you a boolean on whether the above regex occurs in the given video link or not.
Depending on that you can use Matcher.group(), which will give you back the video id.

Refer Here

Extract youtube channel id from channel url - android

4 Answers4