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Editorial Team
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Asked: 2026-06-03T23:35:01+00:00

I have many (5-10) WebViews that are shown simultaneously (e.g. as a carousel similar

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I have many (5-10) WebViews that are shown simultaneously (e.g. as a “carousel” similar to stock Gallery). Remote web sites are loaded into these WebViews (not local html files). The web sites are quite complex – they have lots of javascript, images, may have some flash…

When app starts, all WebViews start loading/layouting their content and running javascript – all this takes quite some time. On the other hand, app is very responsive when the WebViews are loading – scrolling and other UI stuff is really smooth – CPU is definitely not under pressure.

  1. So is it possible to make those views load in parallel? I think my app will benefit greatly from loading WebViews in parallel.
  2. Also, maybe there is a way to do javascript, load and layout manually by reusing WebView source code?
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1 Answer

  1. Editorial Team

    Answering my own question:

    1. Is impossible – javascript on all webviews (and consequently layouting) is done on the same shared thread.
    2. Will not work either – it uses lots of non-public API.

    Instead, I used WebChromeClient#shouldInterceptRequest to cache as much resources as possible, which improved loading times quite a bit.

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