java - Getting values of textarea of html in Android -

i have html page loaded on webview. there 4 textareas present in html page fill after page loaded on webview , when filled them, want values of textareas on click of next button in android (next button in android not in html page) but, cant values of textareas in android. please me. in advance.

here html page loaded on webview.

in html page, linked "ok" button:

function ok() {     var t1 = document.getelementbyid("textarea1").value;     var t2 = document.getelementbyid("textarea2").value;     var t3 = document.getelementbyid("textarea3").value;     var t4 = document.getelementbyid("textarea4").value;      var result = json.parse(bridge.doit(t1,t2,t3,t4));     } } 

in application's webview:

  class mybridge {         public mybridge(context context) {             // ...         }         @javascriptinterface         public string doit(string t1,                 string t2,                 string t3,                 string t4) {         // whatever want here values         }     } 

and in webview's constructor:

    this.addjavascriptinterface(new mybridge(pcontext), "bridge"); 

this should work (using myself). if don't want use ok button, you'll have change code bit fit needs, maybe call function on "onkeypress" of text fields.