Android中擷取網頁表單中的資料實現思路及代碼

最後更新：2018-12-08 來源：互聯網

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MainActivity如下: 複製代碼代碼如下:package cn.testjavascript;
import java.util.StringTokenizer;
import android.os.Bundle;
import android.webkit.WebView;
import android.app.Activity;
/**
* Demo描述:
* 在Android中擷取網頁裡表單中的資料
*/
public class MainActivity extends Activity {
private WebView mWebView;
private String date =null;
private String email = null;
private String username = null;
private String sex = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
init();
}
private void init(){
mWebView=(WebView) findViewById(R.id.webView);
initWebViewSettings();
mWebView.loadUrl("file:///android_asset/form.html");
//注意addJavascriptInterface方法中第二參數
//它表示我們的java對象javaClass的別名.
//這樣Javascript就可以通過該別名來調用Android中的方法
//即Javascript代碼中的:window.testform.send(date+"|"+email+"|"+name+"|"+sex);
//send是方法名
//testform是別名
mWebView.addJavascriptInterface(new Object() {
public void send(String userInfo) {
StringTokenizer userInfoStringTokenizer = new StringTokenizer(userInfo, "|");
date = userInfoStringTokenizer.nextToken();
email = userInfoStringTokenizer.nextToken();
username = userInfoStringTokenizer.nextToken();
sex = userInfoStringTokenizer.nextToken();
System.out.println("userInfoStringTokenizer="+userInfoStringTokenizer.toString());
System.out.println("date=" + date);
System.out.println("email=" + email);
System.out.println("username=" + username);
System.out.println("sex=" + sex);
};
}, "testform");

}
private void initWebViewSettings(){
mWebView.setVerticalScrollBarEnabled(false);
mWebView.setHorizontalScrollBarEnabled(false);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.getSettings().setSupportZoom(true);
mWebView.getSettings().setDomStorageEnabled(true);
mWebView.getSettings().setPluginsEnabled(true);
mWebView.requestFocus();
mWebView.getSettings().setUseWideViewPort(true);
mWebView.getSettings().setLoadWithOverviewMode(true);
mWebView.getSettings().setSupportZoom(true);
mWebView.getSettings().setBuiltInZoomControls(true);
}

}

main.xml如下：複製代碼代碼如下:<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<WebView
android:id="@+id/webView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_centerInParent="true"
/>
</RelativeLayout>

form.html如下: 複製代碼代碼如下:<body>
<form action="" method="post">
時間：<br>
<select id="shijian" name="date">
<option value="2011">2011</option>
<option value="2012">2012</option>
<option value="2013">2013</option>
<option value="2014">2014</option>
<option value="2015">2015</option>
</select><br>
郵箱：
<input id="email" type="text" name="emailID" />
<br>
暱稱：
<input id="name" type="text" name="username" />
<br>
性別：<br>
<input id="men" type="radio" name="sex" value="men"/>男
<input id="women" type="radio" name="sex" value="women"/>女
<br>
<input type="submit" value="註冊" onclick="f()"/>
<input type="button" value="取消" />
</form>
</body>
<script type="text/JavaScript" language="javascript">
function f(){
var email = document.getElementById('email').value;
var name = document.getElementById('name').value;
var date = document.getElementById('shijian').value;
if(document.getElementById('men').checked && !document.getElementById('women').checked){
var sex = document.getElementById('men').value;
}else if(!document.getElementById('men').checked && document.getElementById('women').checked){
var sex = document.getElementById('women').value;
}
window.testform.send(date+"|"+email+"|"+name+"|"+sex);
}
</script>

本文章原先以中文撰寫並發佈於 aliyun.com，亦設英文版本，僅作資訊用途。本網站不對文章的準確性，完整性或可靠性或其任何翻譯作出任何明示或暗示的陳述或保證。如對該文章有任何疑慮或投訴，請傳送電郵至 info-contact@alibabacloud.com 並提供相關疑慮或投訴的詳細說明。職員會於 5 個工作天內與您聯絡，一經驗證之後，即會刪除該侵權內容。

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