首先要在manifest.main文件中创建一个webview,然后再activity中定义这个webview然后
进行一下相关操作。

1、添加权限:AndroidManifest.xml中必须使用许可”android.permission.INTERNET”,否则会出
Web page not available错误。

2、在要Activity中生成一个WebView组件:WebView webView = new WebView(this);

3、设置WebView基本信息:

如果访问的页面中有Javascript,则webview必须设置支持Javascript。

webview.getSettings().setJavaScriptEnabled(true);

触摸焦点起作用

requestFocus();

取消滚动条

this.setScrollBarStyle(SCROLLBARS_OUTSIDE_OVERLAY);

4如果希望点击链接由自己处理,而不是新开Android的系统browser中响应该链接。给
WebView添加一个事件监听对象(WebViewClient)并重写其中的一些方法
shouldOverrideUrlLoading:对网页中超链接按钮的响应。 当按下某个连接时WebViewClient
会调用这个方法,并传递参数:按下的url

onLoadResource

onPageStart

onPageFinish

onReceiveError

onReceivedHttpAuthRequest

5、如果访问的页面中有Javascript,则webview必须设置支持Javascript ,否则显示空白页面。

Java代码

webview.getSettings().setJavaScriptEnabled(true);
6、如果页面中链接,如果希望点击链接继续在当前browser中响应,而不是新开Android的系统browser
中响应该链接,必须覆盖webview的WebViewClient对象:

Java代码

1. mWebView.setWebViewClient(new WebViewClient(){
2. public boolean shouldOverrideUrlLoading(WebView view, String url) {
3. view.loadUrl(url);
4. return true;
5. }
6. });

上述方法告诉系统由我这个WebViewClient处理这个Intent,我来加载URL。点击一个链接的Intent是向上
冒泡的,shouldOverrideUrlLoading方法return true表示我加载后这个Intent就消费了,不再向上冒泡了。
7、如果不做任何处理,在显示你的Brower UI时,点击系统“Back”键,整个Browser会作为一个整体“Back”

到其他Activity中,而不是希望的在Browser的历史页面中 Back。如果希望实现在历史页面中Back,需
要在当前Activity中处理并消费掉该Back事件:

Java代码

1. public boolean onKeyDown(int keyCode, KeyEvent event) {
2. if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebView.canGoBack()) {
3. mWebView.goBack();
4. return true;
5. }
6. return super.onKeyDown(keyCode, event);
7. }

对于Android 2.0开始又多出了一种新的方法,对于Activity 可以单独获取Back键的按下事件,直接重
写 onBackPressed 方法即可,代码如下

Java代码

@Override
1、public void onBackPressed() {
2、 // 这里处理逻辑代码,该方法仅适用于2.0或更高版本的sdk
3、 return ;
4、}

 

这里还有几个知识点:

 

1)为了让WebView从apk文件中加载 assets,Android SDK提供了一个schema,前缀为
“file:///android_asset/”。WebView遇到这样的schema,就去当前包中的 assets目录中找内
容。如上面的”file:///android_asset/demo.html”

 

2)addJavascriptInterface方法中要绑定的 Java对象及方法要运行另外的线程中,不能运行在
构造他的线程中,这也是使用Handler的目的。

 

Webview的两种显示网页的方法:

(1):webview.loadUrl(“www.baidu.com”);

public class WebviewTest extends Activity {

/** Called when the activity is first created. */

 

private WebView mWebView;

private Button bt1;

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

mWebView = (WebView)findViewById(R.id.webview);

WebSettings webSettings = mWebView.getSettings();

webSettings.setJavaScriptEnabled(true);

 

bt1 = (Button)findViewById(R.id.Button01);

 

bt1.setOnClickListener(new View.OnClickListener() {

 

 

public void onClick(View arg0) {

// TODO Auto-generated method stub

webview.loadUrl(“www.baidu.com”);

}

});

}

}

 

(2):自定义网页:Webview.data();

 

public class WebviewTest extends Activity {

/** Called when the activity is first created. */

 

private WebView mWebView;

private Button bt1;

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

mWebView = (WebView)findViewById(R.id.webview);

WebSettings webSettings = mWebView.getSettings();

webSettings.setJavaScriptEnabled(true);

 

bt1 = (Button)findViewById(R.id.Button01);

 

bt1.setOnClickListener(new View.OnClickListener() {

 

 

public void onClick(View arg0) {

// TODO Auto-generated method stub

String str = “asdas”;

mWebView.loadData(

“<html><body>”+str+”</body></html>”,

“text/html”, “utf-8″);

}

});

}

}

 

Webview的常用方法实例:

 

Manifest.xml中的代码:

加入权限:

<uses-permission android:name=”android.permission.INTERNET” />

布局文件中的代码:

<?xml version=”1.0″ encoding=”utf-8″?>

<LinearLayout xmlns:android=”http://schemas.android.com/apk/res/android”

android:orientation=”vertical” android:layout_width=”fill_parent”

android:layout_height=”fill_parent”>

<WebView android:id=”@+id/WebView01″ android:layout_width=”fill_parent”

android:layout_height=”fill_parent”></WebView>

</LinearLayout>

 

TestWebviewDemo中的代码:

public class TestWebviewDemo extends Activity {

/** Called when the activity is first created. */

private static final String TAG = “TestWebviewDemo”;

private WebView mWebView;

private Handler mHandler = new Handler();

private int mDensity;

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

 

mWebView = (WebView) findViewById(R.id.WebView01);

mWebView.getSettings().setAllowFileAccess(true);// 设置允许访问文件数据

mWebView.getSettings().setBuiltInZoomControls(true);// 设置支持缩放

mWebView.getSettings().setSavePassword(false); // 设置是否保存密码

// 设置支持JavaScript脚本

mWebView.getSettings().setJavaScriptEnabled(true);

// 设置支持各种不同的设备

mWebView

.getSettings()

.setUserAgentString(

“Mozilla/5.0 (iPad; U; CPU OS 3_2 like Mac OS X; en-us)
AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B334b Safari/531.21.10”);

// 通过这个设置来执行加载webview网页时所要执行的一些方法

mWebView.setWebViewClient(new WebViewClient() {

// 新开页面时用自己定义的webview来显示,不用系统自带的浏览器来显示

public boolean shouldOverrideUrlLoading(WebView view, String url) {

// TODO Auto-generated method stub

// 当有新连接时使用当前的webview进行显示

view.loadUrl(url);

return super.shouldOverrideUrlLoading(view, url);

}

// 开始加载网页时要做的工作

public void onPageStarted(WebView view, String url, Bitmap favicon) {

 

super.onPageStarted(view, url, favicon);

}

//加载完成时要做的工作

public void onPageFinished(WebView view, String url) {

 

super.onPageFinished(view, url);

}

// 加载错误时要做的工作

public void onReceivedError(WebView view, int errorCode,

String description, String failingUrl) {

Log.d(TAG, “error=” + description);

Toast.makeText(TestWebviewDemo.this,

errorCode + “/” + description, Toast.LENGTH_LONG)

.show();

}

});

// 处理网页中的一些对话框信息(提示对话框,带选择的对话框,带输入的对话
框)

mWebView.setWebChromeClient(new WebChromeClient() {

// 对话框

public boolean onJsAlert(WebView view, String url, String message,

final JsResult result) {

// 构建一个Builder来显示网页中的alert对话框

Builder builder = new Builder(TestWebviewDemo.this);

builder.setTitle(“提示对话框”);

builder.setMessage(message);

builder.setPositiveButton(android.R.string.ok,

new AlertDialog.OnClickListener() {

@Override

public void onClick(DialogInterface dialog,

int which) {

// TODO Auto-generated method stub

result.confirm();

}

});

builder.setCancelable(false);

builder.create();

builder.show();

return true;

}

// 带按钮的对话框

public boolean onJsConfirm(WebView view, String url,

String message, final JsResult result) {

Builder builder = new Builder(TestWebviewDemo.this);

builder.setTitle(“带选择的对话框”);

builder.setMessage(message);

builder.setPositiveButton(android.R.string.ok,

new AlertDialog.OnClickListener() {

 

@Override

public void onClick(DialogInterface dialog,

int which) {

// TODO Auto-generated method stub

result.confirm();

}

 

});

builder.setNeutralButton(android.R.string.cancel,

new AlertDialog.OnClickListener() {

 

@Override

public void onClick(DialogInterface dialog,

int which) {

// TODO Auto-generated method stub

result.cancel();

}

 

});

builder.setCancelable(false);

builder.create();

builder.show();

return true;

}

// 带输入框的对话框

public boolean onJsPrompt(WebView view, String url, String message,

String defaultValue, final JsPromptResult result) {

LayoutInflater inflater = LayoutInflater

.from(TestWebviewDemo.this);

final View v = inflater.inflate(R.layout.prom_dialog, null);

// 设置 TextView对应网页中的提示信息

((TextView) v.findViewById(R.id.TextView_PROM))

.setText(message);

// 设置EditText对应网页中的输入框

((EditText) v.findViewById(R.id.EditText_PROM))

.setText(defaultValue);

Builder builder = new Builder(TestWebviewDemo.this);

builder.setTitle(“带输入的对话框”);

builder.setView(v);

builder.setPositiveButton(android.R.string.ok,

new AlertDialog.OnClickListener() {

 

@Override

public void onClick(DialogInterface dialog,

int which) {

// TODO Auto-generated method stub

String value = ((EditText) v

.findViewById(R.id.EditText_PROM))

.getText().toString();

result.confirm(value);

}

});

builder.setNegativeButton(android.R.string.cancel,

new AlertDialog.OnClickListener() {

 

@Override

public void onClick(DialogInterface dialog,

int which) {

// TODO Auto-generated method stub

result.cancel();

}

});

builder

.setOnCancelListener(new DialogInterface.OnCancelListener() {

 

@Override

public void onCancel(DialogInterface dialog) {

// TODO Auto-generated method stub

result.cancel();

}

 

});

builder.create();

builder.show();

return true;

 

}

 

// 设置网页加载的进度条

public void onProgressChanged(WebView view, int newProgress) {

TestWebviewDemo.this.getWindow().setFeatureInt(

Window.FEATURE_PROGRESS, newProgress * 100);

super.onProgressChanged(view, newProgress);

}

 

// 设置应用程序的标题

public void onReceivedTitle(WebView view, String title) {

TestWebviewDemo.this.setTitle(title);

super.onReceivedTitle(view, title);

}

 

});

// 与网页进行交互的addJavascriptInterface()的方法

mWebView.addJavascriptInterface(new Object() {

public void clickOnAndroid(final String str) {

mHandler.post(new Runnable() {

@Override

public void run() {

// 逻辑代码

});

}

}, “demo”);

 

if (mDensity == 240) { // 可以让不同的density的情况下,可以让页面进行适配

mWebView.getSettings().setDefaultZoom(ZoomDensity.FAR);

} else if (mDensity == 160) {

mWebView.getSettings().setDefaultZoom(ZoomDensity.MEDIUM);

} else {

mWebView.getSettings().setDefaultZoom(ZoomDensity.CLOSE);

}

String strUrl = “http://10.0.2.2:8080/WebTest3″;

mWebView.loadUrl(strUrl);

}

//处理返回的事件,(后退进入前一个界面而不是全部退出)

@Override

public boolean onKeyDown(int keyCode, KeyEvent event) {

if (keyCode == KeyEvent.KEYCODE_BACK && mWebView.canGoBack()) {

mWebView.goBack();// 返回前一个页面

return true;

}

return super.onKeyDown(keyCode, event);

}

 

 

 

 

Webview中java与网页进行数据交互:

先看我们的html文档:

<html>

<script language=”javascript”>

/* This function is invoked by the activity */

function wave() {

alert(“1”);

document.getElementById(“droid”).src=”android_waving.png”;

alert(“2″);

}

</script>

<body>

<!– Calls into the javascript interface for the activity –>

//js调用Java方法

<a onClick=”window.demo.clickOnAndroid()”><div style=”width:80px;

margin:0px auto;

padding:10px;

text-align:center;

border:2px solid #202020;” >

<img id=”droid” src=”android_normal.png”/><br>

Click me!

</div></a>

</body>

</html>

 

Manifest.Xml中:

加入权限:

<uses-permission android:name=”android.permission.INTERNET” />

 

再看我们的java 代码。

Java代码

public class WebViewDemo extends Activity {

 

private static final String LOG_TAG = “WebViewDemo”;

 

private WebView mWebView;

 

private Handler mHandler = new Handler();

 

@Override

public void onCreate(Bundle icicle) {

super.onCreate(icicle);

setContentView(R.layout.main);

mWebView = (WebView) findViewById(R.id.webview);

 

WebSettings webSettings = mWebView.getSettings();

webSettings.setSavePassword(false);

webSettings.setSaveFormData(false);

webSettings.setJavaScriptEnabled(true);

webSettings.setSupportZoom(false);

 

mWebView.setWebChromeClient(new MyWebChromeClient());

//自定义的Demo,供js网页调用

mWebView.addJavascriptInterface(new DemoJavaScriptInterface(), “demo”);

 

mWebView.loadUrl(“file:///android_asset/demo.html”);

}

final class DemoJavaScriptInterface {

 

DemoJavaScriptInterface() {

}

 

/**

* This is not called on the UI thread. Post a runnable to invoke

* loadUrl on the UI thread.

*/

public void clickOnAndroid() {

//用handler来更新UI

mHandler.post(new Runnable() {

public void run() {

//Java调用js方法

mWebView.loadUrl(“javascript:wave()”);

}

});

}

}

/**

* Provides a hook for calling “alert” from javascript. Useful for

* debugging your javascript.

*/

final class MyWebChromeClient extends WebChromeClient {

@Override

public boolean onJsAlert(WebView view, String url, String message, JsResult result) {

Log.d(LOG_TAG, message);

result.confirm();

return true;

}

 

}

}

 

 

再看个例子:

Html中的代码:

<script type=”text/JavaScript”>

function s(){

alert(“Good Morning!”);

}

function d(){

confirm(“Are you ok?”)

}

function f(){

prompt(“What’s your name?”)

}

</script>

</head>

 

<body>

<body>

下面我们演示三种对话框

<br/><br/>

<input type=”button” value=”警告,提醒对话框” οnclick=”s()”>

<br/><br/>

<input type=”button” value=”带选择的对话框” οnclick=”d()”>

<br/><br/>

<input type=”button” value=”要求用户输入的对话框” οnclick=”f()”>

</body>

 

Manifest.Xml中:

加入权限:

<uses-permission android:name=”android.permission.INTERNET” />

 

Java中的代码:

public class Test extends Activity {

/** Called when the activity is first created. */

private EditText et = null;

private Button btn = null;

private WebView wv = null;

private WebSettings ws = null;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

et = (EditText) this.findViewById(R.id.EditText01);

btn = (Button) this.findViewById(R.id.Button01);

wv = (WebView) this.findViewById(R.id.WebView);

ws = wv.getSettings();

ws.setAllowFileAccess(true);//设置允许访问文件数据

ws.setJavaScriptEnabled(true);//设置支持javascript脚本

ws.setBuiltInZoomControls(true);//设置支持缩放

wv.requestFocus();

wv.setWebViewClient(new WebViewClient(){

public boolean shouldOverrideUrlLoading(WebView view,String url){

//当有新连接时,使用当前的 WebView

view.loadUrl(url);

return true;

}

});

wv.setWebChromeClient(new WebChromeClient(){

public boolean onJsAlert(WebView view,String url,String message,final JsResult
result){

//构建一个Builder来显示网页中的alert对话框

Builder builder = new Builder(Test.this);

builder.setTitle(“提示对话框”);

builder.setMessage(message);

builder.setPositiveButton(android.R.string.ok, new
AlertDialog.OnClickListener(){

 

 

@Override

public void onClick(DialogInterface dialog, int which) {

// TODO Auto-generated method stub

result.confirm();

}

 

});

builder.setCancelable(false);

builder.create();

builder.show();

return true;

}

public boolean onJsConfirm(WebView view,String url,String message,final
JsResult result){

Builder builder = new Builder(Test.this);

builder.setTitle(“带选择的对话框”);

builder.setMessage(message);

builder.setPositiveButton(android.R.string.ok, new
AlertDialog.OnClickListener(){

 

@Override

public void onClick(DialogInterface dialog, int which) {

// TODO Auto-generated method stub

result.confirm();

}

 

});

builder.setNeutralButton(android.R.string.cancel, new
AlertDialog.OnClickListener(){

 

@Override

public void onClick(DialogInterface dialog, int which) {

// TODO Auto-generated method stub

result.cancel();

}

 

});

builder.setCancelable(false);

builder.create();

builder.show();

return true;

}

public boolean onJsPrompt(WebView view,String url,String message,String
defaultValue,final JsPromptResult result){

LayoutInflater inflater = LayoutInflater.from(Test.this);

final View v = inflater.inflate(R.layout.prom_dialog, null);

//设置 TextView对应网页中的提示信息

((TextView)v.findViewById(R.id.TextView_PROM)).setText(message);

//设置EditText对应网页中的输入框

((EditText)v.findViewById(R.id.EditText_PROM)).setText(defaultValue);

Builder builder = new Builder(Test.this);

builder.setTitle(“带输入的对话框 “);

builder.setView(v);

builder.setPositiveButton(android.R.string.ok, new

AlertDialog.OnClickListener(){

 

@Override

public void onClick(DialogInterface dialog, int which) {

// TODO Auto-generated method stub

String value =
((EditText)v.findViewById(R.id.EditText_PROM)).getText().toString();

result.confirm(value);

}

 

});

builder.setNegativeButton(android.R.string.cancel, new
AlertDialog.OnClickListener(){

 

@Override

public void onClick(DialogInterface dialog, int which) {

// TODO Auto-generated method stub

result.cancel();

}

 

});

builder.setOnCancelListener(new DialogInterface.OnCancelListener(){

 

@Override

public void onCancel(DialogInterface dialog) {

// TODO Auto-generated method stub

result.cancel();

}

 

});

builder.create();

builder.show();

return true;

}

//设置网页加载的进度条

public void onProgressChanged(WebView view,int newProgress){

Test.this.getWindow().setFeatureInt(Window.FEATURE_PROGRESS,
newProgress*100);

super.onProgressChanged(view, newProgress);

}

//设置应用程序的标题

public void onReceivedTitle(WebView view,String title){

Test.this.setTitle(title);

super.onReceivedTitle(view, title);

}

});

btn.setOnClickListener(new Button.OnClickListener(){

 

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

String url =et.getText().toString();

// String url = “http://10.0.2.2:8080/WebTest3”;

//判断输入的内容是不是网址

if(URLUtil.isNetworkUrl(url)){

Log.d(“++++++++++++”, “sadas”);

wv.loadUrl(url);

Toast.makeText(Test.this, url, Toast.LENGTH_SHORT).show();

}else{

et.setHint(“输入的网址不合法,请重新输入”);

// et.setText(“输入的网址不合法,请重新输入”);

}

}

 

});

}

@Override

public boolean onKeyDown(int keyCode, KeyEvent event) {

if(keyCode==KeyEvent.KEYCODE_BACK && wv.canGoBack()){

wv.goBack();//返回前一个页面

return true;

}

return super.onKeyDown(keyCode, event);

}

 

}

 

 

 

需要注意的地方,很多数据类型js中不认识,*好是在android那边封装好,提供必要的方
法接口。比如传到js中的list,在js中是没办法去得到里面的元素的。

 

Manifest.Xml中:

加入权限:

<uses-permission android:name=”android.permission.INTERNET” />

 

html的带码

<script language=”javascript”>

window.οnlοad= function(){

var i=window.javatojs.getSize();

for(var n=0;n<i;n++){

var jsdata= window.javatojs.getObject(n);//拿到activity里面的属性javadata

var datalistdiv = document.getElementById(“datalist”); //得到页面的div

pnode = document.createElement(“p”);//创建一个p标签,再建个textnode

tnode = document.createTextNode(jsdata);

pnode.appendChild(tnode);//p中加入数据

datalistdiv.appendChild(pnode);//div中键入新的p

}

}

</script>

<body>

<div id = “datalist”>

 

this is a demo

</body>

 

Java的代码:

public class JavaToWebview extends Activity {

 

private WebView web;

public List list;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

initData();

setContentView(R.layout.webview);

web = (WebView)this.findViewById(R.id.webview);

web.getSettings().setJavaScriptEnabled(true);//开启javascript设置

web.addJavascriptInterface(this, “javatojs”);//把RIAExample的一个实例添加到js的全
局对象window中, //这样就可以使用window.javatojs来调用它的方法

web.loadUrl(“file:///android_asset/demo5.html”);//加载网页

 

}

void initData(){

list=new ArrayList<String>();

for(int i=0;i<5;i++){

list.add(“我是从数据库中读取的哈哈”);

}

}

/**

* 该方法将在js脚本中,通过window.javatojs…..()进行调用

* @return

*/

public Object getObject(int index){

return list.get(index);

}

public int getSize(){

return list.size();

}

}

 

再看一个查地图的例子:

Manifest.Xml中:

加入权限:

<uses-permission android:name=”android.permission.INTERNET” />

布局文件中的代码:

<?xml version=”1.0″ encoding=”utf-8″?>

<LinearLayout xmlns:android=”http://schemas.android.com/apk/res/android”

android:orientation=”vertical”

android:layout_width=”fill_parent”

android:layout_height=”fill_parent”

>

<TextView

android:layout_width=”fill_parent”

android:layout_height=”wrap_content”

android:text=”Welcome to Mr Wei’s Blog.”

/>

<WebView

android:id=”@+id/webview”

android:layout_width=”fill_parent”

android:layout_height=”wrap_content”

/>

<Button

android:id=”@+id/button”

android:layout_width=”fill_parent”

android:layout_height=”wrap_content”

android:text=”Change the webview content”

/>

</LinearLayout>

在assets目录下新建一个demo.html文件,代码如下:

<html>

<script language=”javascript”><!–

 

function fillContent(){

document.getElementById(“content”).innerHTML =

“This Content is showed by Android invoke Javascript function.”;

}

 

// –></script>

<body>

<p><a onClick=”window.demo.startMap()” href=””>Start GoogleMap</a></p>

<p id=”content”></p>

<p>A Demo —-Android and Javascript invoke each other.</p>

<p>Author:Frankiewei</p>

</body>

</html>

 

activity代码:

public class WebViewDemo extends Activity {

private WebView mWebView;

private Button mButton;

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

setupViews();

}

//初始化

private void setupViews() {

mWebView = (WebView) findViewById(R.id.webview);

WebSettings mWebSettings = mWebView.getSettings();

//加上这句话才能使用javascript方法

mWebSettings.setJavaScriptEnabled(true);

//增加接口方法,让html页面调用

mWebView.addJavascriptInterface(new Object() {

//这里我定义了一个打开地图应用的方法

public void startMap() {

Intent mIntent = new Intent();

ComponentName component = new ComponentName(

“com.google.android.apps.maps”,

“com.google.android.maps.MapsActivity”);

mIntent.setComponent(component);

startActivity(mIntent);

}

}, “demo”);

//加载页面

mWebView.loadUrl(“file:///android_asset/demo.html”);

mButton = (Button) findViewById(R.id.button);

//给button添加事件响应,执行JavaScript的fillContent()方法

mButton.setOnClickListener(new Button.OnClickListener() {

public void onClick(View v) {

mWebView.loadUrl(“javascript:fillContent()”);

}

});

}

}

 

 

其他例子如下:(activity中获取js界面输入框的值)

Jsp中的代码:

<body>

<form action=”” method=”post”>

宝宝预产期:<br>

<select id=”shijian” name=”date”>

<option value=”2006″>2006</option>

<option value=”2007″>2007</option>

<option value=”2008″>2008</option>

<option value=”2009″>2009</option>

<option value=”2010″>2010</option>

</select><br>

常用邮箱号:

<input id=”email” type=”text” name=”emailID” />

<br>

宝宝昵称:

<input id=”name” type=”text” name=”username” />

<br>

宝宝性别:<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=”注册”

οnclick=”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.demo.clickOnAndroid(date+”|”+email+”|”+name+”|”+sex);

}

</script>

Manifest.xml中的代码:

<?xml version=”1.0″ encoding=”utf-8″?>

<manifest xmlns:android=”http://schemas.android.com/apk/res/android”

package=”com.ruixin.login” android:versionCode=”1″ android:versionName=”1.0″>

<application android:icon=”@drawable/icon” android:label=”@string/app_name”>

<activity android:name=”.TestWebviewDemo” android:label=”@string/app_name”>

<intent-filter>

<action android:name=”android.intent.action.MAIN” />

<category android:name=”android.intent.category.LAUNCHER” />

</intent-filter>

<intent-filter>

<data android:mimeType=”vnd.android.cursor.dir/vnd.ruixin.login” />

</intent-filter>

<intent-filter>

<data android:mimeType=”vnd.android.cursor.item/vnd.ruixin.login” />

</intent-filter>

 

</activity>

<provider android:name=”MyProvider” android:authorities=”com.ruixin.login” />

</application>

<uses-sdk android:minSdkVersion=”8″ />

<uses-permission android:name=”android.permission.INTERNET” />

<uses-permission
android:name=”android.permission.READ_CONTACTS”></uses-permission>

</manifest>

 

 

布局文件中的代码:

<?xml version=”1.0″ encoding=”utf-8″?>

<LinearLayout xmlns:android=”http://schemas.android.com/apk/res/android”

android:orientation=”vertical” android:layout_width=”fill_parent”

android:layout_height=”fill_parent”>

<WebView android:id=”@+id/WebView01″ android:layout_width=”fill_parent”

android:layout_height=”fill_parent”></WebView>

</LinearLayout>

 

TestWebviewDemo中的代码:

public class TestWebviewDemo extends Activity {

/** Called when the activity is first created. */

private static final String TAG = “TestWebviewDemo”;

private WebView mWebView;

private Handler mHandler = new Handler();

private int mDensity;

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

 

mWebView = (WebView) findViewById(R.id.WebView01);

mWebView.getSettings().setAllowFileAccess(true);// 设置允许访问文件数据

mWebView.getSettings().setBuiltInZoomControls(true);// 设置支持缩放

mWebView.getSettings().setSavePassword(false); // 设置是否保存密码

// 设置支持JavaScript脚本

mWebView.getSettings().setJavaScriptEnabled(true);

// 设置支持各种不同的设备

mWebView

.getSettings()

.setUserAgentString(

“Mozilla/5.0 (iPad; U; CPU OS 3_2 like Mac OS X; en-us)
AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B334b Safari/531.21.10”);

// 通过这个设置来执行加载webview网页时所要执行的一些方法

mWebView.setWebViewClient(new WebViewClient() {

// 新开页面时用自己定义的webview来显示,不用系统自带的浏览器来显示

public boolean shouldOverrideUrlLoading(WebView view, String url) {

// TODO Auto-generated method stub

// 当有新连接时使用当前的webview进行显示

view.loadUrl(url);

return super.shouldOverrideUrlLoading(view, url);

}

// 开始加载网页时要做的工作

public void onPageStarted(WebView view, String url, Bitmap favicon) {

 

super.onPageStarted(view, url, favicon);

}

//加载完成时要做的工作

public void onPageFinished(WebView view, String url) {

 

super.onPageFinished(view, url);

}

// 加载错误时要做的工作

public void onReceivedError(WebView view, int errorCode,

String description, String failingUrl) {

Log.d(TAG, “error=” + description);

Toast.makeText(TestWebviewDemo.this,

errorCode + “/” + description, Toast.LENGTH_LONG)

.show();

}

});

// 处理网页中的一些对话框信息(提示对话框,带选择的对话框,带输入的对话
框)

mWebView.setWebChromeClient(new WebChromeClient() {

// 对话框

public boolean onJsAlert(WebView view, String url, String message,

final JsResult result) {

// 构建一个Builder来显示网页中的alert对话框

Builder builder = new Builder(TestWebviewDemo.this);

builder.setTitle(“提示对话框”);

builder.setMessage(message);

builder.setPositiveButton(android.R.string.ok,

new AlertDialog.OnClickListener() {

 

@Override

public void onClick(DialogInterface dialog,

int which) {

// TODO Auto-generated method stub

result.confirm();

}

});

builder.setCancelable(false);

builder.create();

builder.show();

return true;

}

// 带按钮的对话框

public boolean onJsConfirm(WebView view, String url,

String message, final JsResult result) {

Builder builder = new Builder(TestWebviewDemo.this);

builder.setTitle(“带选择的对话框”);

builder.setMessage(message);

builder.setPositiveButton(android.R.string.ok,

new AlertDialog.OnClickListener() {

 

@Override

public void onClick(DialogInterface dialog,

int which) {

// TODO Auto-generated method stub

result.confirm();

}

 

});

builder.setNeutralButton(android.R.string.cancel,

new AlertDialog.OnClickListener() {

 

@Override

public void onClick(DialogInterface dialog,

int which) {

// TODO Auto-generated method stub

result.cancel();

}

 

});

builder.setCancelable(false);

builder.create();

builder.show();

return true;

}

// 带输入框的对话框

public boolean onJsPrompt(WebView view, String url, String message,

String defaultValue, final JsPromptResult result) {

LayoutInflater inflater = LayoutInflater

.from(TestWebviewDemo.this);

final View v = inflater.inflate(R.layout.prom_dialog, null);

// 设置 TextView对应网页中的提示信息

((TextView) v.findViewById(R.id.TextView_PROM))

.setText(message);

// 设置EditText对应网页中的输入框

((EditText) v.findViewById(R.id.EditText_PROM))

.setText(defaultValue);

Builder builder = new Builder(TestWebviewDemo.this);

builder.setTitle(“带输入的对话框”);

builder.setView(v);

builder.setPositiveButton(android.R.string.ok,

new AlertDialog.OnClickListener() {

 

@Override

public void onClick(DialogInterface dialog,

int which) {

// TODO Auto-generated method stub

String value = ((EditText) v

.findViewById(R.id.EditText_PROM))

.getText().toString();

result.confirm(value);

}

});

builder.setNegativeButton(android.R.string.cancel,

new AlertDialog.OnClickListener() {

 

@Override

public void onClick(DialogInterface dialog,

int which) {

// TODO Auto-generated method stub

result.cancel();

}

});

builder

.setOnCancelListener(new DialogInterface.OnCancelListener() {

 

@Override

public void onCancel(DialogInterface dialog) {

// TODO Auto-generated method stub

result.cancel();

}

 

});

builder.create();

builder.show();

return true;

 

}

 

// 设置网页加载的进度条

public void onProgressChanged(WebView view, int newProgress) {

TestWebviewDemo.this.getWindow().setFeatureInt(

Window.FEATURE_PROGRESS, newProgress * 100);

super.onProgressChanged(view, newProgress);

}

 

// 设置应用程序的标题

public void onReceivedTitle(WebView view, String title) {

TestWebviewDemo.this.setTitle(title);

super.onReceivedTitle(view, title);

}

 

});

// 与网页进行交互的addJavascriptInterface()的方法

mWebView.addJavascriptInterface(new Object() {

public void clickOnAndroid(final String str) {

mHandler.post(new Runnable() {

@Override

public void run() {

StringTokenizer stringTokenizer = new StringTokenizer(

str, “|”);

date = stringTokenizer.nextToken();

email = stringTokenizer.nextToken();

username = stringTokenizer.nextToken();

sex = stringTokenizer.nextToken();

//将数据出入数据库

dBlite1.add(email,username,date,sex);

// 用contentResolver访问存入到contentprovider中的数据

contentResolver = TestWebviewDemo.this

.getContentResolver();

Log.d(“++++”, RuiXin.CONTENT_URI.toString());

 

Cursor cursor = contentResolver.query(

RuiXin.CONTENT_URI, new String[] {

RuiXin.EMAIL, RuiXin.USERNAME,

RuiXin.DATE,RuiXin.SEX }, null, null, null);

Log.d(“@@@—-“, cursor.toString());

// startManagingCursor(cursor);

while (cursor.moveToNext()) {

Toast.makeText(

TestWebviewDemo.this,

cursor.getString(cursor.getColumnIndex(RuiXin.EMAIL))

+ ” ”

+ cursor.getString(cursor

.getColumnIndex(RuiXin.USERNAME))

+ ” ”

+ cursor.getString(cursor

.getColumnIndex(RuiXin.DATE))

+ ” ”

+ cursor.getString(cursor

.getColumnIndex(RuiXin.SEX)),

Toast.LENGTH_SHORT).show();

}

startManagingCursor(cursor); //关闭游标

}

});

}

}, “demo”);

 

if (mDensity == 240) { // 可以让不同的density的情况下,可以让页面进行适配

mWebView.getSettings().setDefaultZoom(ZoomDensity.FAR);

} else if (mDensity == 160) {

mWebView.getSettings().setDefaultZoom(ZoomDensity.MEDIUM);

} else {

mWebView.getSettings().setDefaultZoom(ZoomDensity.CLOSE);

}

String strUrl = “http://10.0.2.2:8080/WebTest3”;

mWebView.loadUrl(strUrl);

}

//处理返回的事件,(后退进入前一个界面而不是全部退出)

@Override

public boolean onKeyDown(int keyCode, KeyEvent event) {

if (keyCode == KeyEvent.KEYCODE_BACK && mWebView.canGoBack()) {

mWebView.goBack();// 返回前一个页面

return true;

}

return super.onKeyDown(keyCode, event);

}