Webview crash after fragment tab change - android-fragments

Question

I have a activity with 3 actionbar tabs. Each tab contains a webview which loads a URL at Fragment oncreate(). Everything is working fine but if i switch tabs quickly the onpagefinished appears after the tab change so when the calling fragment is gone, resulting in an NullPointerException. Is there a way to prevent this?
I tried in my fragment:
public void onDestroy() {
super.onDestroy();
try {
myWebView.stopLoading();
} catch (Exception e) {
}
try {
myWebView.clearView();
} catch (Exception e) {
}
and in my tab listener:
onTabSelected(Tab tab, FragmentTransaction ft) {
// StartActivity.mViewPager.setCurrentItem(tab.getPosition());
if (FinishedLoading == true){
ft.replace(R.id.fragment_container, fragment);
}
}
Both options don't prevent the APP to crash.
The error i recieve:
java.lang.NullPointerException
at com.***.Fragment1$MyWebViewClient.onPageFinished(Fragment1.java:233)
at android.webkit.CallbackProxy.handleMessage(CallbackProxy.java:389)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4898)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
at dalvik.system.NativeStart.main(Native Method)

Answer 1

I was facing this issue as well. If you haven't solved it, maybe you would like to try implementing onPause in your fragment like this:
#Override
public void onPause() {
if (webview.isShown() == false) {
webview.stopLoading();
}
super.onPause();
}
#Override
public void onResume() {
super.onResume();
}
Where webview is your webview