Check and clear invalid cached link click ids (#1315)

* Check and clear invalid cached link click ids

* Update ServerRequestInitSession.java

* Update ServerRequestInitSession.java

* Update ServerRequestInitSession.java

* Update ServerRequestInitSession.java

Author: gdeluna-branch

Branch-SDK/src/main/java/io/branch/referral/PrefHelper.java

@@ -680,6 +680,7 @@ public String getExternalIntentExtra() {
      *                   link.
      */
     public void setLinkClickIdentifier(String identifier) {
+        BranchLogger.v("setLinkClickIdentifier: " + identifier);
         setString(KEY_LINK_CLICK_IDENTIFIER, identifier);
     }
 
@@ -1336,6 +1337,7 @@ public void setBool(String key, Boolean value) {
      * Should be called before setting a new Branch-Key. </p>
      */
     private void clearPrefOnBranchKeyChange() {
+        BranchLogger.v("clearPrefOnBranchKeyChange");
         // If stored key isn't the same as the current key, we need to clean up
         // Note: Link Click Identifier is not cleared because of the potential for that to mess up a deep link
         String linkClickID = getLinkClickID();

Branch-SDK/src/main/java/io/branch/referral/ServerRequestInitSession.java

@@ -106,6 +106,16 @@ void onInitSessionCompleted(ServerResponse response, Branch branch) {
      */
     void updateLinkReferrerParams() {
         // Add link identifier if present
+        BranchLogger.v("updateLinkReferrerParams retrieved " + prefHelper_.getLinkClickIdentifier());
+
+        // If there is corrupted link click id info locally stored we need to reset it
+        // to allow for a successful response
+        if(prefHelper_.getLinkClickIdentifier() == null || TextUtils.isEmpty(prefHelper_.getLinkClickIdentifier().trim())){
+            BranchLogger.v("linkIdentifier is null or empty, resetting to bnc_no_value");
+            prefHelper_.setLinkClickIdentifier(NO_STRING_VALUE);
+            prefHelper_.setLinkClickID(NO_STRING_VALUE);
+        }
+
         String linkIdentifier = prefHelper_.getLinkClickIdentifier();
         if (!linkIdentifier.equals(NO_STRING_VALUE)) {
             try {