webview使用

public class CacheWebView {private Context context;private WebView web;private WebSettings settings;private boolean cache = true;// 是否使用cacheprivate boolean useCache = true;// 使用cache总开关private boolean firstAnotherIsUseCache = true;private String titles;private onRefreshTitleListener Listener;private boolean Backing = false;private interfaceMyWebView inteMyWebView=null;private int statu = 100;private SwipeRefreshLayout swipeRefreshLayout = null;@SuppressLint("SetJavaScriptEnabled")public CacheWebView(WebView web, Context context) {this.context = context;this.web = web;settings = web.getSettings();settings.setJavaScriptEnabled(true);//设置支持JS代码settings.setAllowFileAccess(true);settings.setLoadsImagesAutomatically(true);//图片自动加载settings.setGeolocationEnabled(true);//支持LBS定位settings.setGeolocationDatabasePath(context.getFilesDir().getPath());web.requestFocusFromTouch();web.setWebViewClient(new myWebViewClient());web.setWebChromeClient(new myWebChromeClient());}private void testGeolocationOK() {LocationManager manager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);boolean gpsProviderOK = manager.isProviderEnabled(LocationManager.GPS_PROVIDER);boolean networkProviderOK = manager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);boolean geolocationOK = gpsProviderOK && networkProviderOK;Log.i("loc", "gpsProviderOK = " + gpsProviderOK+ "; networkProviderOK = " + networkProviderOK+ "; geoLocationOK=" + geolocationOK);}public void goBack() {Backing = true;web.goBack();}public void loadUrl(String url, boolean useCache) {setIsUseCache(useCache).loadUrl(url);}// 打开网页是否使用缓存public void loadUrl(String url) {web.stopLoading();cache = true;if (useCache) {settings.setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);} else {settings.setCacheMode(WebSettings.LOAD_DEFAULT);}web.loadUrl(url);testGeolocationOK();}// 是否使用缓存public CacheWebView setIsUseCache(boolean useCache) {this.useCache = useCache;this.firstAnotherIsUseCache = useCache;return this;}public CacheWebView OverrideUrlLoading(interfaceMyWebView inteMyWebView) {this.inteMyWebView = inteMyWebView;return this;}// 第一次加载是否使用缓存，之后是否使用缓存public void loadUrl(String url, boolean useCache, boolean firstIsUseCache) {if (firstIsUseCache) {web.stopLoading();web.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);web.loadUrl(url);useCache = false;} else {loadUrl(url, false);}firstAnotherIsUseCache = useCache;}private class myWebViewClient extends WebViewClient {//每次加载网页都会调用@Overridepublic void onLoadResource(WebView view, String url) {super.onLoadResource(view, url);view.loadUrl(Config.js.closeHFder);if (inteMyWebView != null) {inteMyWebView.onPageStart(view, url, settings);}}//加载网页会有时会自动跳转，此方法可以控制url@Overridepublic boolean shouldOverrideUrlLoading(WebView view, String url) {if (firstAnotherIsUseCache) {useCache = firstAnotherIsUseCache;cache = true;view.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);//默认使用缓存}view.loadUrl(url);return true;}//网页加载完成调用此方法@Overridepublic void onPageFinished(WebView view, String url) {super.onPageFinished(view, url);view.loadUrl(Config.js.closeHFder);if (Backing) {Backing = false;return;}if (useCache) {if (cache) {view.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT);//网络加载view.loadUrl(view.getUrl());cache = false;}}if (Tools.isNetworkAvailable(context)) {} else {view.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);Toast.makeText(context, "网络无连接...", 2).show();}}}private class myWebChromeClient extends WebChromeClient {public void onGeolocationPermissionsHidePrompt() {super.onGeolocationPermissionsHidePrompt();}//监听网页加载进度@Overridepublic void onProgressChanged(WebView view, int newProgress) {super.onProgressChanged(view, newProgress);statu = newProgress;if (newProgress < 100) {if (swipeRefreshLayout != null)swipeRefreshLayout.setRefreshing(true);} else {if (inteMyWebView!=null) {inteMyWebView.OverrideUrlLoading(view, view.getUrl(), settings);}view.loadUrl(Config.js.closeHFder);if (Listener != null) {titles = view.getTitle();//获取该url的title}if (swipeRefreshLayout != null)swipeRefreshLayout.setRefreshing(false);}}@Overridepublic void onGeolocationPermissionsShowPrompt(final String origin,final Callback callback) {callback.invoke(origin, true, true);super.onGeolocationPermissionsShowPrompt(origin, callback);Log.i("loc", "onGeolocationPermissionsShowPrompt");}}public interface interfaceMyWebView {public String OverrideUrlLoading(WebView view, String url,WebSettings settings);public void onPageStart(WebView view, String url, WebSettings settings);}public interface onRefreshTitleListener {public void onRefreshTitle(String title);}public void setonRefreshTitleListener(onRefreshTitleListener listener) {this.Listener = listener;}public WebView getWeb() {return web;}public void setWeb(WebView web) {this.web = web;}public SwipeRefreshLayout getSwipeRefreshLayout() {return swipeRefreshLayout;}public void setSwipeRefreshLayout(SwipeRefreshLayout swipeRefreshLayout) {this.swipeRefreshLayout = swipeRefreshLayout;}}