Question

I use the following link for how to get back to android activity page from webview

the solution works perfect to dispaly the Toast message only..

but here im facing issue is when try to start the new activity after the toast message im getting VM aborting error message.

public class JavaScriptInterface{
    Context mContext;

    /** Instantiate the interface and set the context */
    JavaScriptInterface(Context c) {
        mContext = c;
    }

    /** Show a toast from the web page */
    @JavascriptInterface
    public void showToast(String toast) {
        Toast.makeText(mContext, toast, Toast.LENGTH_SHORT).show();
        menuScreenActivity  menu=new menuScreenActivity ();
        menu.logout();//here i try to call the logut method
    }
}

in the menuScreenActivity Activity i created method called logout

Method in the menuScreenActivity

public void logout(){
      Intent myIntent= new Intent(menuScreenActivity.this,LoginActivity.class);
      startActivity(myIntent);
    }

My Log cat says

 JNI WARNING: jarray 0x405a2478 points to non-array object (Ljava/lang/String;)
 "WebViewCoreThread" prio=5 tid=9 NATIVE
  | group="main" sCount=0 dsCount=0 obj=0x4058d718 self=0x1fecb0
  | sysTid=746 nice=0 sched=0/0 cgrp=default handle=5148120
   | schedstat=( 23519331303 11309830622 1216 )
at android.webkit.WebViewCore.nativeTouchUp(Native Method)
at android.webkit.WebViewCore.nativeTouchUp(Native Method)
at android.webkit.WebViewCore.access$3300(WebViewCore.java:53)
at android.webkit.WebViewCore$EventHub$1.handleMessage(WebViewCore.java:1158)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.webkit.WebViewCore$WebCoreThread.run(WebViewCore.java:629)
at java.lang.Thread.run(Thread.java:1019)
VM aborting

Please let me know how to solve this issue?

Answer 1

menuScreenActivity menu=new menuScreenActivity (); is almost certainly wrong. You should never create and Activity with new. It looks like you were doing that just to get a Context to pass to Intent. You already have a Context you save a reference to, so you can use that to launch the intent, assuming you passed an Activity context.

/** Show a toast from the web page */
    @JavascriptInterface
    public void showToast(String toast) {
        Toast.makeText(mContext, toast, Toast.LENGTH_SHORT).show();
        Intent myIntent= new Intent(mContext,LoginActivity.class);
        mContext.startActivity(myIntent);
    }