Revert "Change Linkify leniency to VALID"

This reverts commit 9dfe86d4102b93885b947917fccee35053cfc9f2.

That change moved the lenience from POSSIBLE to VALID, which eliminated
false positive links, especially 4 digit phone numbers, but caused
significant false negatives, leading to CTS test failures
(android.text.util.cts.LinkifyTest#testAddLinks7 in particular).

The true fix requires new functionality to validate phone numbers in
a mobile context. In the meantime, the best solution is to revert.

Bug: 18708556

1 files changed, 2 insertions, 2 deletions

diff --git a/core/java/android/text/util/Linkify.java b/core/java/android/text/util/Linkify.java
index 14be269..c1341e1 100644
--- a/core/java/android/text/util/Linkify.java
+++ b/core/java/android/text/util/Linkify.java
@@ -402,7 +402,7 @@ public class Linkify {
         }
 
         boolean hasPrefix = false;
-
+        
         for (int i = 0; i < prefixes.length; i++) {
             if (url.regionMatches(true, 0, prefixes[i], 0,
                                   prefixes[i].length())) {
@@ -450,7 +450,7 @@ public class Linkify {
     private static final void gatherTelLinks(ArrayList<LinkSpec> links, Spannable s) {
         PhoneNumberUtil phoneUtil = PhoneNumberUtil.getInstance();
         Iterable<PhoneNumberMatch> matches = phoneUtil.findNumbers(s.toString(),
-                Locale.getDefault().getCountry(), Leniency.VALID, Long.MAX_VALUE);
+                Locale.getDefault().getCountry(), Leniency.POSSIBLE, Long.MAX_VALUE);
         for (PhoneNumberMatch match : matches) {
             LinkSpec spec = new LinkSpec();
             spec.url = "tel:" + PhoneNumberUtils.normalizeNumber(match.rawString());