Whats New Dialog with Follow on Twitter Button

WhatsNewDialog.java

    //Credits:
    //http://www.helloandroid.com/tutorials/how-display-custom-dialog-your-android-application
    //https://gist.github.com/3087486
    private void whatsNewDialog() {
        //requestWindowFeature(Window.FEATURE_NO_TITLE);
        //Dialog dialog = new Dialog(main.this);
        final Dialog dialog = new Dialog(this, R.style.NoTitleDialog);
        dialog.setContentView(R.layout.whatsnew);
        //dialog.setTitle(getString(R.string.app_name) + " v" + currentAppVersion);
        dialog.setCancelable(false);
        //set up Title
        TextView textWhatsNewTitle = (TextView) dialog.findViewById(R.id.whatsNewTitle);
        textWhatsNewTitle.setText(getString(R.string.mainTitle) + " v" + currentAppVersion);
        //set up text content
        TextView textWhatsNewContent = (TextView) dialog.findViewById(R.id.tvWhatsNew);
        textWhatsNewContent.setText(R.string.whatsNew);
        //set up image view
        ImageView img = (ImageView) dialog.findViewById(R.id.whatsNewRootIcon);
        img.setImageResource(R.drawable.icon);
        //set up Okay button
        Button btnOkay = (Button) dialog.findViewById(R.id.whatsNewBtnOkay);
        btnOkay.setOnClickListener(new OnClickListener() {
        @Override
            public void onClick(View v) {
                editor.putLong(PREF_WHATS_NEW_LAST_VERSION, currentAppVersionCode);
                editor.commit();
                dialog.dismiss();
            }
        });
        //check for Twitter application
        boolean twitterInstalled = false;;
        try {
            PackageManager packman = getPackageManager();
            packman.getPackageInfo("com.twitter.android", 0);
            twitterInstalled = true;
        } catch (Exception ex) {
            //ex.printStackTrace();
            twitterInstalled = false;
        }
        //set up Twitter button
        Button btnFollow = (Button) dialog.findViewById(R.id.followOnTwitter);
        btnFollow.setOnClickListener(new OnClickListener() {
        @Override
            public void onClick(View v) {
                // this is the intent you actually want.
                // grabbed this by hooking a debugger up to twitter and debugging into android framework source.
                // this let me inspect the contents of the intent.
                Intent i = new Intent();
                i.setClassName("com.twitter.android", "com.twitter.android.ProfileActivity");
                i.putExtra("screen_name", "joeykrim");
                try {
                    startActivity(i);
                }
                catch (Exception ex) {
                    // uh something failed
                    ex.printStackTrace();
                }
            }
        });
        //Log.d(LOG_TAG, "twiterinstalled: " + twitterInstalled);
        if (twitterInstalled) btnFollow.setVisibility(VISIBILITY_VISIBLE);
        //now that the dialog is set up, it's time to show it
        dialog.show();
    }