How to get transparent background of webView for 4.0 version

Question

I am looking for a piece of code which is able to get a transparent background in a WebView for version 4.0 and above. My code is working fine with version 2.3 but it is getting a white background when I run it on version 4.0 and 4.2. I am providing my code which is working for version 2.3, but not in 4.0 and 4.2. Please help me. Thanks in advance...

In XML:

<WebView
    android:id="@+id/webView"
    android:layout_marginTop="6dp"
    android:layout_below="@+id/image"
    android:layout_width="match_parent"
    android:layout_height="fill_parent"
    android:hardwareAccelerated ="true"        
    />

In activity file:

webView = (WebView) findViewById(R.id.webView);
backButton = (ImageView) findViewById(R.id.backButton);
webView.setBackgroundColor(0);                      
webView.loadUrl("file:///android_asset/Info.html");
webView.setBackgroundColor(Color.TRANSPARENT);  
/* this is used to make the background white after loading the file on screen. */

I tried this once, but eventually I used the same background for WebView and the application, so there was an illusion that it was transparent. — vortexwolf, Mar 21 '13 at 15:26

score 41 · Accepted Answer · answered Mar 25 '13 at 14:11

41

Try this:

webView.setBackgroundColor(0x00000000);

and remove android:hardwareAccelerated ="true"
as that is off-topic.

answered Mar 25 '13 at 14:11

gunar

14,660
7
56
87

Thanks... Its working now. But it is usually work from the xml(I think). – Tapesh May 07 '13 at 12:03
@gunar: Yeah! I've already done it before few months. Can't upvote twice. – Mehul Joisar Apr 02 '14 at 12:37
NOTE: setting the background seems to have to follow setting the URL. – N8allan Aug 11 '14 at 22:08
this trick will **NOT** work with youtube movies. They wont play anymore because they need hardware acceleration. – Rudolfwm Aug 28 '14 at 07:26

score 11 · Answer 2 · edited Oct 28 '13 at 19:36

11

If webview is scrolable:

Add this to the Manifest:

android:hardwareAccelerated="false"

OR

Add the following to WebView in the layout:

android:background="@android:color/transparent" android:layerType="software"

Add the following to the parents scroll view:

android:layerType="software"

edited Oct 28 '13 at 19:36

rds

26,253
19
107
134

answered Oct 28 '13 at 19:15

Baton

139
1
2

1

settings android:hardwareAccelerated="false" This works for me .. on android 16 HCL device.. you can enable it on application and just disable it where you use activity that has webview .. – Maher Abuthraa Jan 12 '16 at 11:32

score 1 · Answer 3 · answered Sep 23 '13 at 13:10

1

setBackgroundColor(0x00000000); will make your webview transparent

answered Sep 23 '13 at 13:10

VishalKale

758
7
22

How to get transparent background of webView for 4.0 version

3 Answers3

Linked