CODEWITHSUNDEEP
androidperformanceandroid-viewpager
Slickelito
Slickelito

Reputation: 1786

Increase Android ViewPager performance

I'm creating a android application with target on 2.2. I still want to use the ViewPager provided in the android.support-v4.jar.

I'm using a FragmentPagerAdapter in combination with Fragment to display content. Each fragment contains a WebView, displaying some html data.

Scrolling a WebView up and down works great but the swiping between pages in the ViewPager behaves very jerky and not at all as smooth as scrolling the WebView.

Is there any way you can increase the scroll performance of the ViewPager, maybe something like ConvertView from BaseAdapter?

I'm guessing I could load the url in a background thread but from what I've heard that's not best practice.

Any suggestions would be great, thanks.

Upvotes: 1

Views: 5383

Answers (2)

Andrew Grosner
Andrew Grosner

Reputation: 2387

You should consider reusing the Fragments by providing some method to reuse existing fragments in the ViewPager and populate or refresh it's UI with the new data.

Upvotes: 1

Slickelito
Slickelito

Reputation: 1786

I realized you could use the 

viewPager.setOffscreenPageLimit(items.size());

to keep all items preloaded in memory and avoid the "freeze/laggy" performance while scrolling,.

Upvotes: 14

Related Questions