optimization of searching apps in Chinese

Signed-off-by: zhaoguomanong <zhaoguomanong@gmail.com>
Change-Id: Id322eb8b5249d6163da8a5d3476a6cf9500ad6bb

src/com/android/launcher3/allapps/search/DefaultAppSearchAlgorithm.java

@@ -81,6 +81,10 @@ public class DefaultAppSearchAlgorithm implements SearchAlgorithm {
             return false;
         }
 
+        if (requestSimpleFuzzySearch(query)) {
+            return title.toLowerCase().contains(query);
+        }
+
         int lastType;
         int thisType = Character.UNASSIGNED;
         int nextType = Character.getType(title.codePointAt(0));
@@ -181,4 +185,17 @@ public class DefaultAppSearchAlgorithm implements SearchAlgorithm {
             return new StringMatcher();
         }
     }
+
+    private static boolean requestSimpleFuzzySearch(String s) {
+        for (int i = 0; i < s.length(); ) {
+            int codepoint = s.codePointAt(i);
+            i += Character.charCount(codepoint);
+            switch (Character.UnicodeScript.of(codepoint)) {
+                case HAN:
+                    //Character.UnicodeScript.HAN: use String.contains to match
+                    return true;
+            }
+        }
+        return false;
+    }
 }