Optimization for creating new bundle in bundle array when the existing bundle contains multiple keys

Optimize for the case: create new bundle in Bundle array, if there is an existing bundle which contains multiple keys,
no need to re-create all the keys again in new created bundle, just automatically copy all keys from the existing one. This is extremely useful when the first bundle contains lots of keys.

Author: johnlee2898

app/src/main/java/com/afwsamples/testdpc/common/keyvaluepair/KeyValueBundleArrayFragment.java

@@ -33,6 +33,7 @@
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import java.util.Set;
 
 import static com.afwsamples.testdpc.common.EditDeleteArrayAdapter.OnDeleteButtonClickListener;
 import static com.afwsamples.testdpc.common.EditDeleteArrayAdapter.OnEditButtonClickListener;
@@ -129,7 +130,14 @@ protected void saveConfig() {
 
     @Override
     protected void addNewRow() {
+
+        //Optimize for the case: create new bundle in Bundle array, if there is an existing bundle which contains multiple keys,
+        //no need to re-create all the keys again in new created bundle, just automatically copy all keys from the existing one. This is extremely useful when the first bundle contains lots of keys.
         Bundle bundle = new Bundle();
+
+        if(mBundleList != null && mBundleList.size() > 0) {
+            bundle = clearBundleValues((Bundle) mBundleList.get(0).clone());
+        }
         mAdapter.add(bundle);
         showEditDialog(bundle);
     }
@@ -188,4 +196,22 @@ protected String getDisplayName(Bundle entry) {
             return String.valueOf("Bundle #" + mBundleList.indexOf(entry));
         }
     }
+
+    private Bundle clearBundleValues(Bundle bundle) {
+
+        Set<String> keySet = bundle.keySet();
+        for(String key : keySet) {
+            Object valueObject = bundle.get(key);
+            if(valueObject instanceof String) {
+                bundle.putString(key, "");
+            } else if(valueObject instanceof Integer) {
+                bundle.putInt(key, 0);
+            } else if(valueObject instanceof Boolean) {
+                bundle.putBoolean(key, false);
+            } else if(valueObject instanceof Bundle) {
+                bundle.putBundle(key, clearBundleValues((Bundle) valueObject));
+            }
+        }
+        return bundle;
+    }
 }