Android Java: Extract substring from uri string after particular characters

Question

I would like to extract a substring starting from particular substring.

I'm getting an array of URIs of multiple images from Photo Library via this solution. But the URIs are something like this

content://com.android.providers.media.documents/document/image%3A38

I would like to remove content:// and get only

com.android.providers.media.documents/document/image%3A38

I've searched through the Internet but found no best solution. Perhaps to avoid regex because it's kinda heavy.

At the moment I choose not to get the substring by checking after second '/' because it feels kinda "hardcoded".

Not sure if I've missed a good solution but please help.

Joseph Potter · Accepted Answer · 2019-02-19 15:41:08Z

3

If you need to get whatever string comes after a certain substring, in this case "content://", you could use the split method.

String string = "content://com.android.providers.media.documents/document/image%3A38";
String uri = string.split("content://")[1];

Or you could use the substring and indexOf methods like in the other answer, but add on the length of the substring.

String string = "content://com.android.providers.media.documents/document/image%3A38";
String sub = "content://";
String uri = string.substring(string.indexOf(sub) + sub.length());

answered Feb 19, 2019 at 15:41

Joseph Potter

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Comments

Guy Luz · Accepted Answer · 2019-02-19 15:14:17Z

1

You can just use the substring method in order to create new strings without content://, something like this :

String string = "content://com.android.providers.media.documents/document/image%3A38"
String secondString = string.substring(string.indexOf("com.android"));

edited Feb 19, 2019 at 15:14

Guy Luz

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answered Feb 19, 2019 at 15:03

Tamir Abutbul

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