使用正则表达式分割字符串

Question

I have been trying to split a string using regular expression in android without any success.

The string is formatted like this id;value| For example :

String valueString = "20;somevalue|4;anothervalue|10;athirdvalue|5;enoughwithvaluesalready";

I use this method to try o split the string.

public void splitString(String valueString){
    Pattern p = Pattern.compile("([\\d]+);([^\\|]+)");
    Matcher m = p.matcher(valueString);  
    boolean matches = m.matches();
}

When I run it in the Rubular-regex-editor it looks fine, in Android no matches are found. Any ideas?

Answer 1

the method matches() tries to match the regex against the the complete string. And this does clearly not match.

find() will find the next matching substring.

Answer 2

Why don't you use String.split instead of writing your own solution?

Like:

final String[] entries = valueString.split("\\|");
for (String entry : entries) {
  final String[] fields = entry.split(";", 2);
}

Answer 3

I have tried your example, It will work only add .* at end of your Regx

    Log.i("MainActivity ", "Matches " + valueString.matches("([\\d]+);([^\\|]+).*"));

Above line return true

http://developer.android.com/reference/java/lang/String.html#matches(java.lang.String )

Describe in above function