Android webview requests to app slow

Question

I have an android application which primarily uses the webview to render content. The webcode makes requests to the android app, which houses a sqlite database and a bunch of data that it syncs from my server.

I have done a lot of profiling, and there is a lot of time that is completely unaccounted for. Here is a timeline for one of our requests:

The first big block of stuff happening is the request itself to load some data from the application's database. The last block is our webcode receiving the response from the app and rendering everything. The middle stuff is just some background tasks happening in the webview.

There's a lot of seeming dead space here. I've profiled everything in the android app that happens when a request is made, including the query itself, and it's a minuscule amount of time, there are hundreds of milliseconds unaccounted for.

Are there known performance issues with Android in this regard?

This app is for build 21+ only.

score 0 · Answer 1 · answered Apr 17 '17 at 19:18

0

use this:

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
    webView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
} else {
    webView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
}

manifest.xml add below:

in application level :

  <application android:hardwareAccelerated="true">

in Activity level :

<activity android:hardwareAccelerated="false" />

answered Apr 17 '17 at 19:18

Santosh Bachkar

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14

or try this :if (Build.VERSION.SDK_INT >= 11){ webview.setLayerType(View.LAYER_TYPE_SOFTWARE, null); } – Santosh Bachkar Apr 17 '17 at 19:19
Did not appear to make a difference :( We are using 21+ btw – Slims Apr 17 '17 at 19:32
check here :http://stackoverflow.com/questions/5899087/android-webview-localstorage?rq=1 – Santosh Bachkar Apr 17 '17 at 19:36
That question seems to be about localstorage not working. Am I missing something? By the way, that code did seem to speed up some of my requests, just not the ones I want :) – Slims Apr 17 '17 at 19:40

Android webview requests to app slow

1 Answers1