Android native embedded browser modify

webview.py

import kivy                                                                                     
from kivy.app import App                                                                        
from kivy.lang import Builder                                                                   
from kivy.utils import platform                                                                 
from kivy.uix.widget import Widget                                                              
from kivy.clock import Clock                                                                    
from jnius import autoclass                                                                     
from android.runnable import Runnable                                                   
                                                                                                
WebView = autoclass('android.webkit.WebView')                                                   
WebViewClient = autoclass('android.webkit.WebViewClient')                                       
activity = autoclass('org.renpy.android.PythonActivity').mActivity    

def run_ui_thread(f, *args, **kwargs):
    # args/kwargs to runnable was a bug, fixed in master
    Runnable(f)(args, kwargs)
                                                                                                
class Wv(Widget):                                                                               
    def __init__(self, **kwargs):                                                               
        super(Wv, self).__init__(**kwargs)                                                      
        Clock.schedule_once(self.create_webview, 0)                                             
                                                                                                                                                                        
    def create_webview(self, *args):  
        def _create_webview(*args):                                                        
            webview = WebView(activity)                                                             
            webview.getSettings().setJavaScriptEnabled(True)                                        
            wvc = WebViewClient();                                                                  
            webview.setWebViewClient(wvc);                                                          
            activity.setContentView(webview)                                                        
            webview.loadUrl('http://www.ip138.com')
            
        run_ui_thread(_create_webview, *args)
        
                                                                                                
class ServiceApp(App):                                                                          
    def build(self):                                                                            
        return Wv()                                                                             
                                                                                                
if __name__ == '__main__':                                                                      
    ServiceApp().run()