Android: can't get javascript to work on WebView even with setJavaScriptEnabled(true)

Question

I'm a complete noob to Android and this is just a simple test. Based it on this tutorial.

Here goes the HelloWebApp.java

package com.company.something;

import android.app.Activity;
import android.os.Bundle;
import android.webkit.WebView;

public class HelloWebApp extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        WebView webView = (WebView)findViewById(R.id.webView);
        webView.getSettings().setJavaScriptEnabled(true);
        webView.loadUrl("file:///android_asset/www/index.html");
    }
}

And this is from res/layout/main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<WebView  
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:id="@+id/webView"
    />
</LinearLayout>

Plus this is all I changed on the Manifest:

<activity android:name=".HelloWebApp"
android:label="@string/app_name"
android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"
android:screenOrientation="landscape">

As for the javascript, I've tried everything. Complicated, simple, inside the body at the bottom, in a button, on the head. Nothing works. The html works fine.

Thanks in advance for any help.

Mina Fawzy · Accepted Answer · 2014-10-30 08:57:38Z

23

You missed the part in the tutorial where he adds

webView.setWebChromeClient(new WebChromeClient());

right after adding

webView.getSettings().setJavaScriptEnabled(true);

The JavaDoc for this method says:

Sets the chrome handler. This is an implementation of WebChromeClient for use in handling Javascript dialogs, favicons, titles, and the progress. This will replace the current handler.

edited Oct 30, 2014 at 8:57

Mina Fawzy

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answered Feb 24, 2011 at 23:07

no.good.at.coding

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3 Comments

HotFudgeSunday Over a year ago

Thanks no.good.at.coding. Although that should be my name. ;-)

HotFudgeSunday Over a year ago

One thing not mentioned in the tutorial are the imports: import android.webkit.WebChromeClient; import android.webkit.WebView; . You can hover over the code underlined in red and you'll get some options to fix it. The first one will be the imports.

BREI Over a year ago

obrigado o que faltou aqui foi isso} webView.setWebChromeClient(new WebChromeClient());

Community · Accepted Answer · 2017-05-23 11:54:02Z

2

As discussed in https://stackoverflow.com/a/7561674/1818089,

along with

mWebView = (WebView) findViewById(R.id.webview);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.setWebChromeClient(new WebChromeClient());

you need to enable DOM storage

WebSettings webSettings = webView.getSettings();
webSettings.setDomStorageEnabled(true);

edited May 23, 2017 at 11:54

CommunityBot

11 silver badge

answered Mar 21, 2017 at 1:32

computingfreak

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Comments

Ori Lentz · Accepted Answer · 2016-02-23 11:51:31Z

-2

just add

import android.webkit.WebChromeClient;
import android.webkit.WebView;

in YourApp.java

edited Feb 23, 2016 at 11:51

Ori Lentz

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answered Feb 23, 2016 at 11:48

Red Abhi

1

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