[TIMOB-24273] iOS: Overwriting existing event listeners only calls the last one (Regression from 6.0.1)

GitHub Issue	n/a
Type	Bug
Priority	High
Status	Closed
Resolution	Fixed
Resolution Date	2017-01-05T18:35:33.000+0000
Affected Version/s	n/a
Fix Version/s	Release 6.1.0
Components	iOS
Labels	ios, regression
Reporter	Christoph Eck
Assignee	Christopher Williams
Created	2017-01-04T11:24:51.000+0000
Updated	2017-01-05T23:24:24.000+0000

Description

*Problem* Overwrites the click event listeners if there is more than one defined. actual behavior

click in example on the label

in the log is shown 'click3'

expected behavior

click in example on the label

in the log is shown 'click1, click2 and click3'

*Test case*

var win = Ti.UI.createWindow({height: Ti.UI.SIZE, width: Ti.UI.SIZE, backgroundColor: "white"});
var label = Ti.UI.createLabel({text: "label"});
var view = Ti.UI.createView({height: Ti.UI.SIZE, width: Ti.UI.SIZE});

view.add(label);
win.add(view);
win.open();

view.addEventListener('click', function(event){
    Ti.API.info('click1');
});
view.addEventListener('click', function(event){
    Ti.API.info('click2');
});
view.addEventListener('click', function(event){
    Ti.API.info('click3');
});

*Log* actual behavior {noformat} [INFO] : click3 {noformat} expected behavior {noformat} [INFO] : click [INFO] : click2 [INFO] : click3 {noformat}

Comments

Hans Knöchel 2017-01-04

Ok, after some investigation, I found out that [this change](https://github.com/appcelerator/titanium_mobile/pull/8659) caused the regression in 6.1.0 master. It works properly in 6.0.1.GA.
Christopher Williams 2017-01-05

https://github.com/appcelerator/titanium_mobile/pull/8731

Samir Mohammed 2017-01-05

Verified fixed, When clicking on the label the log now shows:

   [INFO] :   click1
   [INFO] :   click2
   [INFO] :   click3

*Environment*

   Appcelerator Command-Line Interface, version 6.1.0
   iphone 6 plus (ios 9.3.4)
   Operating System Name: Mac OS X El Capitan
   Operating System Version: 10.11.6
   Node.js Version: 4.6.0
   npm: 4.2.8
   Titanium SDK Version: 6.1.0.v20170105103604
   Xcode: 8.2
   Appcelerator Studio: 4.8.1.201612050850

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