[TIMOB-15475] Android: TiApp events are received out of order in a WebView

GitHub Issue	n/a
Type	Bug
Priority	Low
Status	Open
Resolution	Unresolved
Affected Version/s	Release 3.1.2, Release 3.1.3, Release 3.2.0, Release 3.2.1
Fix Version/s	n/a
Components	Android
Labels	android, event, supportTeam
Reporter	Meenakshi Pathak
Assignee	Unknown
Created	2013-10-14T11:58:45.000+0000
Updated	2018-02-28T20:04:14.000+0000

Description

In Android, TiApp events received are out of order. In the given test case, there is a window that includes a WebView and a ScrollViews set on top of different regions of it. The ScrollViews receive touch events. The ScrollViews listen for the scroll event and pass those along to the WebView via Ti.App.fireEvent calls which include the current offset of the ScrollView. Please find attached sample project to demonstrate the issue. Here are the logs of Android :

[DEBUG][TiAPI   (12917)]  Event scroll: 47
[DEBUG][TiAPI   (12917)]  Event scroll: 224
[DEBUG][TiAPI   (12917)]  Event scroll: 234
[DEBUG][TiAPI   (12917)] Section scroll offset: 234
[DEBUG][TiAPI   (12917)]  Event scroll: 462
[DEBUG][TiAPI   (12917)]  Event scroll: 631
[DEBUG][TiAPI   (12917)]  Event scroll: 771
[DEBUG][TiAPI   (12917)] Section scroll offset: 771
[DEBUG][TiAPI   (12917)]  Event scroll: 808
[DEBUG][TiAPI   (12917)]  Event scroll: 799
[DEBUG][TiAPI   (12917)]  Event scroll: 796
[DEBUG][TiAPI   (12917)] Section scroll offset: 796
[DEBUG][TiAPI   (12917)] Section scroll offset: 799
[DEBUG][TiAPI   (12917)] Section scroll offset: 808
[DEBUG][TiAPI   (12917)] Section scroll offset: 631
[DEBUG][TiAPI   (12917)] Section scroll offset: 462
[DEBUG][TiAPI   (12917)] Section scroll offset: 224
[DEBUG][TiAPI   (12917)] Section scroll offset: 47

Whereas logs of iOS :

[INFO] :   Native ScrollView offset: 136.5
[INFO] :   WebView scroll offset: 136.5
[INFO] :   Native ScrollView offset: 136
[INFO] :   WebView scroll offset: 134.5
[INFO] :   Native ScrollView offset: 134.5
[INFO] :   WebView scroll offset: 134.5
[INFO] :   Native ScrollView offset: 134.5
[INFO] :   WebView scroll offset: 134.5
[INFO] :   Native ScrollView offset: 134
[INFO] :   WebView scroll offset: 134
[INFO] :   Native ScrollView offset: 134
[INFO] :   WebView scroll offset: 134
[INFO] :   Native ScrollView offset: 133.5
[INFO] :   WebView scroll offset: 133.5
[INFO] :   Native ScrollView offset: 133
[INFO] :   WebView scroll offset: 133
[INFO] :   Native ScrollView offset: 132.5
[INFO] :   WebView scroll offset: 132.5

Note : This works as expected on iOS. However, on Android, the events received by the web view are out of order

Attachments

File	Date	Size
AndroidScrollViewWebEvents.zip	2013-10-14T11:58:45.000+0000	7783288

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