Android SGS3 blockWebkitDraw

[Бежнар]

Hello!
There is a problem with the control ScrollView on phones Samsung Galaxy 3. Scroll through the pages or does not work or is triggered after the second or third time.
In the debugger when an attempt is turning the message:

11-28 18:27:18.125 V/WebViewInputDispatcher(21253): blockWebkitDraw
11-28 18:27:18.125 V/WebViewInputDispatcher(21253): blockWebkitDraw lockedfalse
11-28 18:27:21.615 V/WebViewInputDispatcher(21253): blockWebkitDraw
11-28 18:27:21.615 V/WebViewInputDispatcher(21253): blockWebkitDraw lockedfalse
11-28 18:27:23.235 V/WebViewInputDispatcher(21253): blockWebkitDraw
11-28 18:27:23.235 V/WebViewInputDispatcher(21253): blockWebkitDraw lockedfalse
11-28 18:27:24.390 V/WebViewInputDispatcher(21253): blockWebkitDraw
11-28 18:27:24.390 V/WebViewInputDispatcher(21253): blockWebkitDraw lockedfalse
11-28 18:27:25.010 V/WebViewInputDispatcher(21253): blockWebkitDraw
11-28 18:27:25.010 V/WebViewInputDispatcher(21253): blockWebkitDraw lockedfalse

Help solve this problem.
Thanks in advance.

[Petyo]

Hello Бежнар,

I tested the scrollview on the device (Android 4.1.2, Chrome browser), and it seems to work as expected. Perhaps there are certain specific in your environment? 

Regards,
Petyo
Telerik

 

 

[Бежнар]

I'm writing a hybrid application that displays pages of local content (the directory Assets) in WebView. Tested on Android 4.0.3 (HTC Sensation XE) and Android 4.3 (Samsung Galaxy 3).
Scrolling works not the first time, the animation runs with a strong slowdown, especially seen in the Galaxy 3

[Kiril Nikolov]

Hello Бежнар,

I have tested the Kendo UI ScrollView in a mobile application on both 4.0.3 and 4.3 native Android emulators, and the ScrollView component works correctly. The performance is lower than the latest iOS and Android 4.4.2+ versions, however there is not optimization property or solution that we can provide at the current moment.

Regards,
Kiril Nikolov
Telerik

 

 

[Kiril Nikolov]

Hello Бежнар,

You can also try turning on the hardware accelaration, that might help in some scenarios like yours. Here is more information that can be useful:

http://docs.telerik.com/platform/appbuilder/configuring-your-project/project-properties-for-android-devices

http://www.telerik.com/forums/android-lag

Regards,
Kiril Nikolov
Telerik

 

 

[Бежнар]

Thanks for the links. My problem is very similar to that on the following link: http://www.telerik.com/forums/android-lag

Hardware acceleration is turned off immediately, as WebView no draws nothing but the background. In this case, when you press your finger movement and sometimes slips image control and immediately disappears.
In this case, such a situation at all Android devices tested.

[Kiril Nikolov]

Hello Бежнар,

I am afraid that I was not able to understand your exact problem. Can you elaborate more on the last response?

Regards,
Kiril Nikolov
Telerik

 

 

[Бежнар]

The problem is that it does not always work clicks on buttons and scrolling on the control ScrollView inside WebView. At a time when the operation does not occur in the debugger displays a message specified in the first post of this topic

[Kiril Nikolov]

Hello Бежнар,

We are not aware of this error, we searched the internet and we only found this forum topic regarding the error. Please check it out and it might be helpful:

http://stackoverflow.com/questions/18032616/what-does-blockwebkitdraw-mean-and-how-to-fix-it

Regards,
Kiril Nikolov
Telerik