Merge "Handle null ItemInfo.title for widget list" into ub-launcher3-master

src/com/android/launcher3/compat/AlphabeticIndexCompat.java

@@ -12,6 +12,8 @@ import com.android.launcher3.Utilities;
 import java.lang.reflect.Method;
 import java.util.Locale;
 
+import androidx.annotation.NonNull;
+
 public class AlphabeticIndexCompat {
     private static final String TAG = "AlphabeticIndexCompat";
 
@@ -53,7 +55,7 @@ public class AlphabeticIndexCompat {
     /**
      * Computes the section name for an given string {@param s}.
      */
-    public String computeSectionName(CharSequence cs) {
+    public String computeSectionName(@NonNull CharSequence cs) {
         String s = Utilities.trim(cs);
         String sectionName = mBaseIndex.getBucketLabel(mBaseIndex.getBucketIndex(s));
         if (Utilities.trim(sectionName).isEmpty() && s.length() > 0) {
@@ -89,7 +91,7 @@ public class AlphabeticIndexCompat {
         /**
          * Returns the index of the bucket in which the given string should appear.
          */
-        protected int getBucketIndex(String s) {
+        protected int getBucketIndex(@NonNull String s) {
             if (s.isEmpty()) {
                 return UNKNOWN_BUCKET_INDEX;
             }

src_shortcuts_overrides/com/android/launcher3/model/WidgetsModel.java

@@ -69,7 +69,8 @@ public class WidgetsModel {
         WidgetItemComparator widgetComparator = new WidgetItemComparator();
         for (Map.Entry<PackageItemInfo, ArrayList<WidgetItem>> entry : mWidgetsList.entrySet()) {
             WidgetListRowEntry row = new WidgetListRowEntry(entry.getKey(), entry.getValue());
-            row.titleSectionName = indexer.computeSectionName(row.pkgItem.title);
+            row.titleSectionName = (row.pkgItem.title == null) ? "" :
+                    indexer.computeSectionName(row.pkgItem.title);
             Collections.sort(row.widgets, widgetComparator);
             result.add(row);
         }