<WebView
      ref={( webView ) => this.webView = webView}
      // source={{uri: 'http://192.168.0.80/TUTUSchooldvlp/jsxc/index.php?username='+this.state.loginusername+'&password='+this.state.loginpassword+'&bid='+bid}}
      source={{uri: chatUrl+'?username='+this.state.loginusername+'&password='+this.state.loginpassword+'&bid='+bid}}
      onMessage={this.onMessage}
      javaScriptEnabled = {true}
      injectedJavaScript={this.state.cookie}
      allowsInlineMediaPlayback={true}

      mediaPlaybackRequiresUserAction={true}
      startInLoadingState={true}
      // onMessage={this._alertForPhotosPermission}
      style={{marginTop: 0}}

       />