Capturing JavaScript events in WebView of Android Development

A few days ago, I encountered a BUG in the project:

We used WebView In the Android project to open an online banking payment url. When we click "pay", they will pop up an inquiry box using js on the webpage. The js Code is as follows:

 
 

  
  
function testConfirm() {  
  
  
    if(confirm("pay or not?")) {  
  
  
      alert("yes! i do");  
  
  
    }  
  
  
    else 
  
  
    {  
  
  
      alert("no!!!");  
  
  
    }  
  
  
} 
 
 

If I didn't process the js event in webView, the process could not be correctly executed.

After checking the api, the solution is as follows:

First, set the webView attributes:

 
 

  
  
mWebView.getSettings().setJavaScriptEnabled(true); mWebView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true); 
 
 

Second, set WebChromeClient:

 
 

  
  
MWebView. setWebChromeClient (new WebChromeClient (){
  
  
 
  
  
@ Override
  
  
Public boolean onJsAlert (WebView view, String url, String message,
  
  
Final JsResult result ){
  
  
AlertDialog. Builder builder = new AlertDialog. Builder (mContext );
  
  
Builder. setMessage (message)
  
  
. SetNeutralButton ("OK", new OnClickListener (){
  
  
@ Override
  
  
Public void onClick (DialogInterface arg0, int arg1 ){
  
  
Arg0.dismiss ();
  
  
}
  
  
}). Show ();
  
  
Result. cancel ();
  
  
Return true;
  
  
}
  
  
 
  
  
@ Override
  
  
Public boolean onJsConfirm (WebView view, String url,
  
  
String message, final JsResult result ){
  
  
// TODO Auto-generated method stub
  
  
Log. I (TAG, "onJsConfirm" + "," + "url:" + url );
  
  
 
  
  
DialogUtils. dialogBuilder (mContext, "tip", message,
  
  
New DialogCallBack (){
  
  
 
  
  
@ Override
  
  
Public void onCompate (){
  
  
Log. I (TAG, "onJsConfirm, onCompate ");
  
  
Result. confirm ();
  
  
}
  
  
 
  
  
@ Override
  
  
Public void onCancel (){
  
  
Log. I (TAG, "onJsConfirm, onCancel ");
  
  
Result. cancel ();
  
  
}
  
  
});
  
  
Return true;
  
  
}
  
  
});
 
 

In this way, the alert () and confirm () Events of javascript can be captured in webView.

Url for test: http://liucundong.sinaapp.com/testWebView.php