如何在WebView中单击按钮类型提交时返回活动

Question

我在填写表单后返回上一个活动时遇到问题，并在“我的WebView应用程序”中单击“提交”按钮类型。

代码[Web]：

<form action="mysite.com/sell.php" method="post" enctype="multipart/form-data">
    <input type = "hidden" name = "sell">
    <input type = "text" name = "name">
    <input type = "number" name = "phone">
    <button type = "submit">Save</button>
</form>

代码[PHP] sell.php

<?php 
 if($_SERVER['REQUEST_METHOD']=='POST'){

 //Getting values
 $name = $_POST['name'];
 $phone = $_POST['phone'];


 //Creating an sql query
 $sql = "INSERT INTO sell (name,phone) VALUES ('$name','$phone')";

 //Importing our db connection script
 require_once('dbConnect.php');

 //Executing query to database
 if(mysqli_query($con,$sql)){
 echo 'success';
 }else{
 echo 'failure';
 }

 //Closing the database 
 mysqli_close($con);
 }

XML [WebView]

<?xml version="1.0" encoding="utf-8"?>
<WebView  xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/webview"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
/>

WebView活动

public class MyWebView extends AppCompatActivity{
WebView view;
    protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);

            setContentView(R.layout.view_web_my);

            String url = "mysite.com/";

            view = (WebView) this.findViewById(R.id.webview);
            view.getSettings().setJavaScriptEnabled(true);
            view.setWebViewClient(new WebViewClient());
            view.loadUrl(url);
    }
}

如何在点击“保存”按钮后返回上一个活动？