Unity webview

@SuppressLint("SetJavaScriptEnabled")
public class MainActivity extends UnityPlayerActivity{
    private Activity _activity;
    private Context context;
    LinearLayout _webViewLayout;
    WebView _webView;

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        context = getApplicationContext();
        _activity = UnityPlayer.currentActivity;
    }

    private Boolean checkConnection()
    {
        ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        if( cm.getActiveNetworkInfo() != null)
        {
            return true;
        }
        return false;
    }

    /** PLACES A WEBVİEW OVER MAIN UI WITH MARGINS , CALL THIS FROM UNITY*/
    public void placeWebViewLayout(final String url, final int _marginLeft,
            final int _marginTop, final int _marginRight,
            final int _marginBottom)
    {
        if(checkConnection())
        {
            runOnUiThread(new Runnable() {

                @Override
                public void run() {
                    setWebView(url, _marginLeft, _marginTop, _marginRight,
                            _marginBottom);
                }
            });
        }
    }

    /** HELPER FOR PLACEWEBVIEWLAYOUT*/
    @SuppressWarnings("unused")
    private ProgressDialog dialog;
    private void setWebView(String _url, int _marginLeft, int _marginTop,
            int _marginRight, int _marginBottom) {
        try {
            Log.d("WEBVIEW");
            _webViewLayout = new LinearLayout(_activity);
            LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
                    ViewGroup.LayoutParams.MATCH_PARENT,
                    LayoutParams.MATCH_PARENT);
            layoutParams.setMargins(_marginLeft, _marginTop, _marginRight,
                    _marginBottom);

            _webViewLayout.setLayoutParams(layoutParams);
            _webViewLayout.requestLayout();
            _activity.addContentView(_webViewLayout, layoutParams);
            _webView = new WebView(_activity);

            _webView.setLayoutParams(layoutParams);
            _webViewLayout.addView(_webView);

            // _webView.setLayoutParams(layoutParams);
            WebSettings webSettings = _webView.getSettings();
            webSettings.setUseWideViewPort(true);
            webSettings.setLoadWithOverviewMode(true);
            webSettings.setJavaScriptEnabled(true);
            _webView.setMinimumHeight(300);
            /** Web settings, diolog might be null */
            _webView.setWebViewClient(new MyWebViewClient());

            _webView.loadUrl(_url);
        } catch (Exception e) {
            Log.e(e.toString());
        }

    }
}