Support removal of arrays

Match patterns such as "string-array" that would previously only return "array", and subsequently fail in `remove_resource_value`

android_clean_app.py

@@ -23,6 +23,7 @@ class Issue:
     Stores a single issue reported by Android Lint
     """
     pattern = re.compile('The resource `?([^`]+)`? appears to be unused')
+    pattern_array = re.compile('<`?([^`]+)`? name="`?([^`]+)`?">')
 
     def __init__(self, filepath, remove_file):
         self.filepath = filepath
@@ -40,7 +41,13 @@ def add_element(self, message):
         if res_all:
             res = res_all[0]
             bits = res.split('.')[-2:]
-            self.elements.append((bits[0], bits[1]))
+            if bits[0] != 'array':
+               type = bits[0]
+            else:
+                # array is a generic type, which may take form string-array, integer-array, etc. 
+                # The only way to get type is to parse from errorLine1 which is less reliable than message.
+               type = re.findall(Issue.pattern_array, errorLine1)[0][0]
+            self.elements.append((type, bits[1]))
         else:
             print("The pattern '%s' seems to find nothing in the error message '%s'. We can't find the resource and can't remove it. The pattern might have changed, please check and report this in github issues." % (
                 Issue.pattern, message))

test/android_app/res/values/strings.xml

@@ -2,4 +2,8 @@
 <resources>
     <string name="app_name">android_app</string>
     <string name="missing">missing</string>
+    <string-array name="missing_array">
+        <item>Test1</item>
+        <item>Test2</item>
+    </string-array>
 </resources>