Support for HTML5 Sqllite Androidapp

Brief introduction:

Want to build an Android App that supports HTML5;

This HTML5 program requires the use of local storage, especially sqllite;

Created an app with Eclipse, which defaults to creating two XML files that describe the interface in Res/layout, one calling another, and the following code is based on the situation;

 PackageCom.example.helloweb;Importandroid.app.Activity;ImportAndroid.app.ActionBar;Importandroid.app.Fragment;ImportAndroid.content.Context;ImportAndroid.os.Bundle;ImportAndroid.view.LayoutInflater;ImportAndroid.view.Menu;ImportAndroid.view.MenuItem;ImportAndroid.view.View;ImportAndroid.view.ViewGroup;ImportAndroid.os.Build;Importandroid.webkit.WebChromeClient;ImportAndroid.webkit.WebView;Importandroid.webkit.WebSettings;ImportAndroid.webkit.WebStorage.QuotaUpdater; Public classMainactivityextendsActivity {@Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);        Setcontentview (R.layout.activity_main); //to support HTML5 local storage using the database (SQLite)String DatabasePath = Getapplicationcontext (). Getdir ("Database", Context.mode_private). GetPath (); if(Savedinstancestate = =NULL) {placeholderfragment fragment=Newplaceholderfragment ();                        Fragment.setdatabasepath (DatabasePath);        Getfragmentmanager (). BeginTransaction (). Add (R.id.container, Fragment). commit (); }} @Override Public BooleanOncreateoptionsmenu (Menu menu) {//inflate the menu; This adds items to the action bar if it is present.getmenuinflater (). Inflate (R.menu.main, menu); return true; } @Override Public Booleanonoptionsitemselected (MenuItem item) {//Handle Action Bar item clicks here. The Action Bar would//automatically handle clicks on the Home/up button, so long//As you specify a the parent activity in Androidmanifest.xml.        intID =Item.getitemid (); if(id = =r.id.action_settings) {            return true; }        return Super. onoptionsitemselected (item); }    /*** A placeholder fragment containing a simple view. * Instantiated as a sub-UI class*/     Public Static classPlaceholderfragmentextendsFragment {String databasepath;  Publicplaceholderfragment () {}//get the database path generated by mainactivity         Public voidSetDatabasePath (String databasepath) { This. DatabasePath =DatabasePath; } @Override PublicView Oncreateview (layoutinflater inflater, ViewGroup container, Bundle savedinstancestate) { View Rootview= Inflater.inflate (R.layout.fragment_main, container,false); //Drag a webview through the IDE into the child UI, so here's a look from the Rootview.WebView WebView =(WebView) Rootview.findviewbyid (R.ID.WEBVIEW1); Webview.setwebchromeclient ( This. Makewebchromeclient ()); WebSettings websettings=webview.getsettings (); Websettings.setjavascriptenabled (true); Websettings.setdatabaseenabled (true); Websettings.setdatabasepath ( This. DatabasePath); //can load local and network resources, load network resources need to configure permissions//Webview.loadurl ("http://www.csdn.net/");Webview.loadurl ("file:///android_asset/demo.html"); returnRootview; }                Privatewebchromeclient makewebchromeclient () {return Newwebchromeclient () {@Override Public voidonexceededdatabasequota (string url, String databaseidentifier, LongCurrentquota,LongEstimatedSize,LongTotalusedquota, Quotaupdater quotaupdater) {Quotaupdater.updatequota (5 * 1024 * 1024);        }            }; }       }}

Configure permissions for the app to access the network (configured in the Androidmanifest.xml file)

<?XML version= "1.0" encoding= "Utf-8"?><Manifest>    <uses-permissionAndroid:name= "Android.permission.INTERNET" />     

<USES-SDK/>    <Application></Application></Manifest>

Support for HTML5 Sqllite Androidapp