[MAdMan] Possibly fix "Cannot find breadcrumb interpolators for -1"

2015-05-29 11:05:01 -07:00 · 2015-05-29 11:05:01 -07:00 · 228dc5f936
parent 36c33b4a60
commit 228dc5f936
1 changed files with 8 additions and 5 deletions
--- a/Libraries/CustomComponents/Navigator/Navigator.js
+++ b/Libraries/CustomComponents/Navigator/Navigator.js
@ -549,11 +549,14 @@ var Navigator = React.createClass({
        this.spring.getCurrentValue()
      );
    } else if (this.state.activeGesture != null) {
-      this._transitionBetween(
-        this.state.presentedIndex,
-        this.state.presentedIndex + this._deltaForGestureAction(this.state.activeGesture),
-        this.spring.getCurrentValue()
-      );
+      var presentedToIndex = this.state.presentedIndex + this._deltaForGestureAction(this.state.activeGesture);
+      if (presentedToIndex > -1) {
+        this._transitionBetween(
+          this.state.presentedIndex,
+          presentedToIndex,
+          this.spring.getCurrentValue()
+        );
+      }
    }
  },