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https://issues.apache.org/jira/browse/CB-9615?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15090916#comment-15090916
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Chris Murdaugh commented on CB-9615:
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The problem is two-fold:
1. As Android 4.3 and below are the old webview (not Chrome-based webview), CSS
Tranforms are slow. This kills our app and many others which use CSS tranforms
for some important HTML animations. LOTS of people are complaining about this
and it has been a longstanding issue for Android performance for
Cordova/Phonegap:
For evidence of the large number of developers this issue impacts, google:
"cordova css transforms slow"
But to save you time, just read this one (has a long chain of many developers
discussing the issue):
https://forum.ionicframework.com/t/slow-page-transitions-on-android-with-hardware-acceleration-on/799/18
2. Google is limiting APK size to 50MB (for cellular download), which for most
developers on Cordova/Phonegap that means most of the market and the Cordova
APK expansion plugins aren't really there yet...
3. Crosswalk consumes around 25mb extra file size to include the library with
Cordova to address the CSS Tranforms issue.. This kills it for most developers
(see point 2). Androids 4.0 - 4.3 are still 27.4% of Android device
distribution - as per:
http://developer.android.com/about/dashboards/index.html
4. The decision to pull support for the old getsettings API in this light is
unwise and I can promise you will turn potential developers away from
Cordova/Phonegap (considering that Android is over 80% of the mobile market and
until 4.3 and below are well and truly extinct this will plague Cordova
uptake)...
Please consider adding a shim or some sort of call to allow
.getSettings().setRenderPriority to work..
> getsettings API removed from Android CordovaWebView which disables
> renderpriority and WebView tweaks for devices below Android 5
> --------------------------------------------------------------------------------------------------------------------------------
>
> Key: CB-9615
> URL: https://issues.apache.org/jira/browse/CB-9615
> Project: Apache Cordova
> Issue Type: Bug
> Components: Android
> Affects Versions: 4.1.0, 4.3.0, 4.0.1, 4.1.1
> Environment: Windows 8.1 and Android SDK with Eclipse or Android
> Studio
> Reporter: Chris Murdaugh
> Priority: Minor
>
> getsettings API removed from CordovaWebView ex:
> appView.getSettings().setRenderPriority in the java MainActivity no longer
> works in Cordova Android 3.7.2 and above (to test you will need to set
> hardwareacceleration to false in AndroidManifest and use the above java in
> the mainactivity) - an undefined method is thrown in the compiler. This is a
> deal-breaker as we cannot use Crosswalk because it adds 18mb to APK size (we
> really need to stay below the 50MB cellular APK size limit for market reach).
> We need our CSS3 transforms to be above 1-10fps for stability and the above
> tweak has allowed us to maintain compatibility and performance for Android
> 4.x and above (this issue affects all supported Android versions since CSS3
> transforms are slow without Crosswalk). Having the getsettings API removed
> from Cordova 3.72 and above (and no replacement API exists) means that we
> cannot upgrade our Cordova until this issue is resolved and will have to go
> without patch for CVE-2015-1835.
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