Phonegap for IOS Plugin插件开发

1.新建Phonegap工程MyPlugin
环境
xcode4.5.1
phonegap2.1.0
2.在Plugin文件夹下创建实现Plugin子类
[plain] 
// 
//  MyPlugin.h 
//  MyPGPlugin 
// 
//  Created by kllmctrl on 12-10-29. 
// 
// 
 
#import <Cordova/CDV.h> 
 
@interface MyPlugin : CDVPlugin 
 
- (void) add:(CDVInvokedUrlCommand*)command; 
 
@end 

[plain]
#import "MyPlugin.h" 
#import <Cordova/CDV.h> 
 
@implementation MyPlugin 
 
- (void) add:(CDVInvokedUrlCommand*)command{ 
    CDVPluginResult* pluginResult = nil; 
    NSString* javaScript = nil; 
     
    @try { 
         
        NSString* echo = [command.arguments objectAtIndex:0]; 
        NSString* echo2 = [command.arguments objectAtIndex:1]; 
         
        if (echo != nil 
            && [echo length] > 0 
            && echo2 != nil 
            && [echo2 length] > 0) { 
             
            /** 
             *相加字符串 
             */ 
            NSString *addResult = [NSString stringWithFormat:@"%@%@", echo, echo2]; 
            pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK messageAsString:addResult]; 
            javaScript = [pluginResult toSuccessCallbackString:command.callbackId]; 
             
             
        } else { 
            pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_ERROR]; 
            javaScript = [pluginResult toErrorCallbackString:command.callbackId]; 
        }