获得手机当前的所有内容处理者(Contenthandler)的信息

步骤:

     1. 获得Registry类的一个实例

     2.获得所有已注册的内容处理者的ID

     3.通来ID获取内容处理者的实例,并显示其信息

开发环境:JBuilder + WTK2.5.1

代码如下:

package com.scholar.luo; import javax.microedition.midlet.*; import javax.microedition.lcdui.*; import javax.microedition.content.Registry; public class MainMIDlet extends MIDlet { static MainMIDlet iMIDlet; MessageForm iForm = null; public MainMIDlet() { iMIDlet = this; //获得Registry档案室的实例 //Registry.getRegistry(this.getClass().getName()) iForm = new MessageForm(Registry.getRegistry(this.getClass().getName())); } public void startApp() { Display.getDisplay(this).setCurrent(iForm); } public void pauseApp() { } public void destroyApp(boolean unconditional) { } public static void quitApp() { iMIDlet.destroyApp(true); iMIDlet.notifyDestroyed(); iMIDlet = null; } }

 

package com.scholar.luo; import javax.microedition.lcdui.*; import javax.microedition.content.Registry; import javax.microedition.content.ContentHandler; import javax.microedition.content.ActionNameMap; public class MessageForm extends Form implements CommandListener { Registry iRegistry = null; public MessageForm(Registry aRegistry) { super("内容处理者的信息"); iRegistry = aRegistry; try { jbInit(); } catch(Exception e) { e.printStackTrace(); } } private void jbInit() throws Exception { //获得档案室的内容处理者的ID String[] sHandlerIDs = iRegistry.getIDs(); //循环通来ID获得内容处理者的实例并显示相应的信息 for (int i=0; i<sHandlerIDs.length; i++) { ContentHandler sHandler = iRegistry.forID(sHandlerIDs[i], true); this.append( "[" + i + "] 应用程序名:" + sHandler.getAppName() + "/n"); //处理内容的类型 for (int j=0; j<sHandler.getTypeCount(); j++) { this.append(" 处理类型[" + j + "]:" + sHandler.getType(j) + "/n"); } //处理内容内的后缀 for (int k=0; k<sHandler.getSuffixCount(); k++) { this.append(" 处理后缀[" + k + "]:" + sHandler.getSuffix(k) + "/n"); } //处理的动作与动名 ActionNameMap sNameMap = sHandler.getActionNameMap(); if (sNameMap != null) { for (int n=0; n<sNameMap.size(); n++) { this.append(" 动作[" + n + "]:" + sNameMap.getAction(n) + "动作名[" + n + "]:" + sNameMap.getActionName(n) + "/n"); } } } // Set up this Displayable to listen to command events setCommandListener(this); // add the Exit command addCommand(new Command("退出", Command.EXIT, 1)); } public void commandAction(Command command, Displayable displayable) { /** @todo Add command handling code */ if (command.getCommandType() == Command.EXIT) { // stop the MIDlet MainMIDlet.quitApp(); } } }

 

运作效果如下(运行过wtk的CHAPIDEO)：