配置WebView

一、基本配置

1、wb.setWebChromeClient(new WebChromeClient());//用于加载javascript

//setWebChromeClient()源码/**     * Sets the chrome handler. This is an implementation of WebChromeClient for     * use in handling JavaScript dialogs, favicons, titles, and the progress.     * This will replace the current handler.     *     * @param client an implementation of WebChromeClient     */    public void setWebChromeClient(WebChromeClient client) {}

2、wb.setWebViewClient(new WebViewClient()//用于接收通知和请求的，可重写方法实现功能

//比如：wb.setWebViewClient(new WebViewClient() {            @Override            public boolean shouldOverrideUrlLoading(WebView view, String url) {                if (TextUtils.isEmpty(url)) {                    view.loadUrl(url);//在同一webview跳转网页                }                return true;            }        });`

//setWebClient()源码/**     * Sets the WebViewClient that will receive various notifications and     * requests. This will replace the current handler.     *     * @param client an implementation of WebViewClient     */    public void setWebViewClient(WebViewClient client) {}

3、WebSettings ws = wb.getSettings();
ws.setJavaScriptEnabled(true);//webview允许执行js

4、ws.setBuiltInZoomControls(false);// 隐藏缩放按钮

5、ws.setSaveFormData(false);// 保存表单数据

6、ws.setGeolocationEnabled(true);// 启用地理定位

7、ws.setAppCacheEnabled(false);//是否允许缓存

8、 ws.setAppCacheMaxSize(1024 * 10);//设置缓存大小

9、ws.setUseWideViewPort(true);// 可任意比例缩放

10、ws.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NARROW_COLUMNS);//可能的话使所有列的宽度不超过屏幕宽度
//为实现网页适配各类手机，pad,除了网页前端处理好，android这边也要处理。 第9个方法必须为true的情况下，所设置的适配方法才能有效。

1、LayoutAlgorithm.NARROW_COLUMNS ：适应内容大小
2、LayoutAlgorithm.SINGLE_COLUMN:适应屏幕，内容将自动缩放

二、上传参数

1、loadUrl(String url, Map<String, String> additionalHttpHeaders);//可传header2、postUrl(String url, byte[] postData)//可传参数

但是这两个方法不能同时使用。

//postUrl源码/**     * Loads the URL with postData using "POST" method into this WebView. If url     * is not a network URL, it will be loaded with {@link #loadUrl(String)}     * instead, ignoring the postData param.     *     * @param url the URL of the resource to load     * @param postData the data will be passed to "POST" request, which must be     *     be "application/x-www-form-urlencoded" encoded.     */    public void postUrl(String url, byte[] postData) {        checkThread();        if (URLUtil.isNetworkUrl(url)) {            mProvider.postUrl(url, postData);        } else {            mProvider.loadUrl(url);        }    }

//loadUrl源码/**     * Loads the given URL with the specified additional HTTP headers.     *     * @param url the URL of the resource to load     * @param additionalHttpHeaders the additional headers to be used in the     *            HTTP request for this URL, specified as a map from name to     *            value. Note that if this map contains any of the headers     *            that are set by default by this WebView, such as those     *            controlling caching, accept types or the User-Agent, their     *            values may be overriden by this WebView's defaults.     */    public void loadUrl(String url, Map<String, String> additionalHttpHeaders) {        checkThread();        mProvider.loadUrl(url, additionalHttpHeaders);    }

3、既传header又传参数

需重写webClient

public class CustomWebClient extends WebViewClient {    String header = "";    public CustomWebClient(Activity activity) {        header = Utility.getUserAgent(activity);    }    @TargetApi(Build.VERSION_CODES.LOLLIPOP)    @Override    public WebResourceResponse shouldInterceptRequest(WebView view, WebResourceRequest request) {        String actionId = "";        String path = request.getUrl().toString();        if (path.contains(Constants.mPrefix_clocks)) {            actionId = getValueByName(path, "action");//Uri.parse(path).getQueryParameter("action");            String mParams = "";            try {                URL mUrl = new URL(path);                HttpURLConnection connection = (HttpURLConnection) mUrl.openConnection();                connection.setRequestMethod("POST");                connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");//application/Json; charset=UTF-8                connection.setRequestProperty("User-Agent", Constants.USER_AGENT_PREFIX + header);//                connection.setRequestProperty("actionid",  URLEncoder.encode(actionId);//参数一//                connection.setRequestProperty("secretString", URLEncoder.encode(secretString));//参数二                mParams = "actionid=" + URLEncoder.encode(actionId) + "&secretString=" + URLEncoder.encode(RequestParams.encryptStr1(actionId));                connection.setDoInput(true);                connection.setDoOutput(true);                connection.setUseCaches(false);                //建立输入流，向指向的URL传入参数                DataOutputStream os = new DataOutputStream(connection.getOutputStream());//getoutputstream自动连接                os.writeBytes(mParams);                os.flush();                os.close();                return new WebResourceResponse("text/html", connection.getContentEncoding(), connection.getInputStream());            } catch (Exception e) {                e.printStackTrace();            }        }        return null;    }    public String getValueByName(String url, String name) {        String result = "";        int index = url.indexOf("?");        String temp = url.substring(index + 1);        String[] keyValue = temp.split("&");        for (String str : keyValue) {            if (str.contains(name)) {                result = str.replace(name + "=", "");                break;            }        }        return result;    }    }

//然后：
webview.loadUrl(url);

三、关于webview缓存

@Overrideprotected void onDestroy() {    super.onDestroy();    //清空所有Cookie    CookieSyncManager.createInstance(QzmobileApp.getContext());  //Create a singleton CookieSyncManager within a context    CookieManager cookieManager = CookieManager.getInstance(); // the singleton CookieManager instance    cookieManager.removeAllCookie();// Removes all cookies.    CookieSyncManager.getInstance().sync(); // forces sync manager to sync now    webView.setWebChromeClient(null);    webView.setWebViewClient(null);    webView.getSettings().setJavaScriptEnabled(false);    webView.clearCache(true);}

四、关于Content-Type 未完待续。。。

参考：
http://blog.csdn.net/liwei123liwei123/article/details/52624826
http://blog.csdn.net/u014473112/article/details/52176412
http://blog.csdn.net/mygoon/article/details/48546781
http://blog.csdn.net/u014473112/article/details/52176412