CODEWITHSUNDEEP
androidandroid-webviewonbackpressed
user7700921
user7700921

Reputation:

Webview Video doesn't stop on Backpress in my android app

In my android application I want to open a webpage in a WebView. A webpage which i want to open also contains video. To achieve this functionality,I used WebChromeClient in my application. The problem is that, onBackPressed() of this activity, some videos don't get stopped and they keep playing in background, though my WebView activity is finished. I don't know why this happens. I tried various codes, but couldn't solve this problem. Some videos stop automatically, but some keeps on playing in background. How to solve this issue ?

here is my code 

    @Override
public void onBackPressed() {

    if (myWebView.canGoBack()) {
        myWebView.goBack();
    } else {
        super.onBackPressed();
    }
}

Upvotes: 3

Views: 766

Answers (3)

Karan Kalsi
Karan Kalsi

Reputation: 819

You can pause the webview by using this:-

 public void pauseVideo()

{

try {
        Class.forName("android.webkit.WebView")
                .getMethod("onPause", (Class[]) null)
                            .invoke(myWebView, (Object[]) null);

    } catch(ClassNotFoundException cnfe) {
        ...
    } catch(NoSuchMethodException nsme) {
        ...
    } catch(InvocationTargetException ite) {
        ...
    } catch (IllegalAccessException iae) {
        ...
    }
}

Then in onBackpressed you can invoke this method like this:-

   @Override
    public void onBackPressed() {

    if (myWebView.canGoBack()) {
        pauseVideo();
        myWebView.goBack();

    } else {
        super.onBackPressed();
    }
}

Upvotes: 0

Hareshkumar Chhelana
Hareshkumar Chhelana

Reputation: 24848

Ref - https://stackoverflow.com/a/17690221/3032209:

You should call through to the WebView's onPause() and onResume() from your Activity's onPause() and onResume(), respectively.

Pauses any extra processing associated with this WebView and its associated DOM, plugins, JavaScript etc. For example, if this WebView is taken offscreen, this could be called to reduce unnecessary CPU or network traffic. When this WebView is again "active", call onResume(). There's also pauseTimers(), which affects all of the WebViews within your application:

Pauses all layout, parsing, and JavaScript timers for all WebViews. This is a global requests, not restricted to just this WebView. This can be useful if the application has been paused.

Upvotes: 0

Abhishek
Abhishek

Reputation: 66

use to on Back pressed this code

 @Override
public void onBackPressed() {
    mWebView.stopLoading();
    mWebView.removeAllViews();
    mWebView.destroy();
    mWebView = null;
    finish();
    super.onBackPressed();
}

Upvotes: 3

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