From d63762194d7c9ba8ebf6774ef25948cb87a3e694 Mon Sep 17 00:00:00 2001
From: Eaden <_@eaden.net>
Date: Tue, 15 Mar 2016 12:16:52 -0700
Subject: [PATCH] Fix bug #5604 - Unrecognised signal for touchable no longer
 on the screen

Summary:Fixes bug https://github.com/facebook/react-native/issues/5604 ("Redscreen error when TouchRelease triggered on a component no longer in the tree")

( maybe not ideally )

This issue is triggered by the following:

A Touch event on a component ( Keep Pressing )
A state/props update removes the component from the tree and render is performed
A Touch Release event. ( When you release the press on the component no longer there )

This fix adds an early return to the signal handling code if a RESPONDER_RELEASE signal happens when the responder has disappeared
Closes https://github.com/facebook/react-native/pull/5637

Differential Revision: D3053729

Pulled By: sahrens

fb-gh-sync-id: 21a2a303d8921654607eaab824ef28fc16df9500
shipit-source-id: 21a2a303d8921654607eaab824ef28fc16df9500
---
 Libraries/Components/Touchable/Touchable.js | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Libraries/Components/Touchable/Touchable.js b/Libraries/Components/Touchable/Touchable.js
index 4f5000c5c..55be8e0dc 100644
--- a/Libraries/Components/Touchable/Touchable.js
+++ b/Libraries/Components/Touchable/Touchable.js
@@ -599,18 +599,22 @@ var TouchableMixin = {
    * @sideeffects
    */
   _receiveSignal: function(signal, e) {
+    var responderID = this.state.touchable.responderID;
     var curState = this.state.touchable.touchState;
     var nextState = Transitions[curState] && Transitions[curState][signal];
+    if (!responderID && signal === Signals.RESPONDER_RELEASE) {
+      return;
+    }
     if (!nextState) {
       throw new Error(
         'Unrecognized signal `' + signal + '` or state `' + curState +
-        '` for Touchable responder `' + this.state.touchable.responderID + '`'
+        '` for Touchable responder `' + responderID + '`'
       );
     }
     if (nextState === States.ERROR) {
       throw new Error(
         'Touchable cannot transition from `' + curState + '` to `' + signal +
-        '` for responder `' + this.state.touchable.responderID + '`'
+        '` for responder `' + responderID + '`'
       );
     }
     if (curState !== nextState) {