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.

Answer 1

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());

Answer 2

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"));