JS calls Java methods and passes arguments to each other

JS calls Java methods through PhoneGap and passes the arguments to each other.

One, Java code

Write a class that inherits from plugin and overrides the Execute method.

ImportOrg.json.JSONArray;Importandroid.app.Activity;ImportAndroid.app.AlertDialog;Importandroid.content.ActivityNotFoundException;ImportAndroid.content.DialogInterface;Importandroid.content.Intent;ImportAndroid.net.Uri;ImportAndroid.os.Bundle;Importcom.phonegap.api.PhonegapActivity;ImportCom.phonegap.api.Plugin;ImportCom.phonegap.api.PluginResult; Public classPlugintestextendsPlugin {

Public static String ACTION = "Hello";
     Publicplugintest () {}/*** Executes the request and returns Pluginresult. *     * @paramaction the action to execute. * @paramargs Jsonarray of arguments for the plugin. * @paramCallbackid The callback ID used when calling back to JavaScript. * @returna Pluginresult object with a status and message. */@Override PublicPluginresult Execute (String action, Jsonarray args, string callbackid) {Try{jsonobject jsonobj=NewJsonobject ();//JSON data that can be returned to JS            if(Action.equals ("Hello") ) {String str1= args.getstring (0);//get the first parameterString str2= args.getstring (1);//get the second argumentJsonobj.put ("str1", str1+ "1");//Put the parameters in the Jsonobject objectJsonobj.put ("str2", str2+ "2");//Put the parameters in the Jsonobject object} pluginresult R=NewPluginresult (pluginresult.status.ok,jsonobj); returnR; } Catch(Exception e) {e.printstacktrace (); }    }}        

Second, configure the plug-in in Plugins.xml

Adding configuration information to the new plug-in in the Plugins.xml file

<?XML version= "1.0" encoding= "Utf-8"?><Plugins>    <pluginname= "APP"value= "COM.PHONEGAP.APP"/>    <pluginname= "Geolocation"value= "Com.phonegap.GeoBroker"/>    <pluginname= "Device"value= "Com.phonegap.Device"/>    <pluginname= "Accelerometer"value= "Com.phonegap.AccelListener"/>    <pluginname= "Compass"value= "Com.phonegap.CompassListener"/>    <pluginname= "Media"value= "Com.phonegap.AudioHandler"/>    <pluginname= "Camera"value= "Com.phonegap.CameraLauncher"/>    <pluginname= "Contacts"value= "Com.phonegap.ContactManager"/>    <pluginname= "Crypto"value= "Com.phonegap.CryptoHandler"/>    <pluginname= "File"value= "Com.phonegap.FileUtils"/>    <pluginname= "Network Status"value= "Com.phonegap.NetworkManager"/>    <pluginname= "Notification"value= "Com.phonegap.Notification"/>    <pluginname= "Storage"value= "Com.phonegap.Storage"/>    <pluginname= "Temperature"value= "Com.phonegap.TempListener"/>    <pluginname= "Filetransfer"value= "Com.phonegap.FileTransfer"/>    <pluginname= "Capture"value= "Com.phonegap.Capture"/>    <!--new Plug-in class configuration name write your class name, value write package name. Class Name -    <pluginname= "Plugintest"value= "com.easyway.barcode.PluginTest "/>  </Plugins>

Third, the JavaScript file registration plugin

Create a new. js file and put the file in the same directory as the PhoneGap file. (Create a new simpleplugin.js file)

varSimpleplugin =function() {};
//str1 and str2 are parameters that are passed to Java SimplePlugin.prototype.hello=function(Successcallback, Failurecallback, str1, str2) {//the parameters of the exec are: Success Callback, Failure Callback, registered Plugin name: The name that corresponds to the XML file configuration ,    //' Hello ' is a parameter in the Execute method of the incoming Java file string action   //name (parameters from HTML)    returnPhonegap.exec (Successcallback, Failurecallback, ' plugintest ', ' Hello ', [STR1,STR2]);};//here is PhoneGap Plugin's registration, Plugin's name and Native Class's name is not wrong, is that we have just entered thePhonegap.addconstructor (function() {    //Register the JavaScript plugin with PhoneGapPhonegap.addplugin (' Simpleplugin ',NewSimpleplugin ());//Simpleplugin is the plug-in name, and new Simpleplugin () instantiates the class name of this JavaScript}); 

Iv. calling methods in an HTML file

Introduction of PhoneGap and plug-in JS files in HTML files, calling methods

<! DOCTYPE html><HTML>    <Head>    <MetaCharSet= "Utf-8">    <title>Java Pass-through parameters</title>    <Scriptsrc= "Phonegap.js"></Script> <!--PhoneGap Bag -    <Scriptsrc= "Js/jquery.js"></Script>    <Scriptsrc= "Simpleplugin.js"></Script><!--custom plug-in Files -    <Script>$ (document). Ready (function(e) {$ ("#btn_test"). Click (function() {Window.plugins.simplePlugin.hello (function(Result) {alert ("The first parameter returned:"+RESULT.STR1+"The second parameter returned"+result.str2); },                 function(Error) {},"first parameter",                "a second parameter"            );    });    }); </Script>    </Head><Body><Buttontype= "button"ID= "Btn_test">Click me!</Button></Body></HTML>

JS calls Java methods and passes arguments to each other