轉(zhuǎn)自：http://blog.csdn.net/linzhiji/article/details/6833884

.h文件

#import <UIKit/UIKit.h> #import "JSONKit.h"@interface MainViewController : UIViewController {UIButton *btn; } @end

.m文件

// // MainViewController.m // testapple // // Created by kiri on 12-5-8. // Copyright (c) 2012年 __MyCompanyName__. All rights reserved. //#import "MainViewController.h"@implementation MainViewController#pragma mark - View lifecycle // Implement loadView to create a view hierarchy programmatically, without using a nib. - (void)loadView {[super loadView];self.navigationController.navigationBar.hidden = NO;self.title = @"測試";btn = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 100, 40)];[btn setBackgroundImage:[UIImage imageNamed:@"btnoff.png"] forState:UIControlStateNormal];[btn setBackgroundImage:[UIImage imageNamed:@"btnon.png"] forState:UIControlStateHighlighted];[btn addTarget:self action:@selector(onbuttonclick) forControlEvents:UIControlEventTouchUpInside];[self.view addSubview:btn]; }// Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad {[super viewDidLoad]; }-(void)onbuttonclick {NSLog(@"onbuttonclick");NSString *jsonstring = @"[{\"age\":18,\"book\":{\"price\":23.2,\"title\":\"booooooook1\"},\"name\":\"samyou\"},{\"age\":22,\"book\":{\"price\":21,\"title\":\"booooooook2\"},\"name\":\"samsam\"}]";NSData *data = [jsonstring dataUsingEncoding:NSUTF8StringEncoding];NSArray *arr = (NSArray *)[data mutableObjectFromJSONData];NSLog(@"count=%d",arr.count);for(int i=0;i<arr.count;i++){NSDictionary *people = [arr objectAtIndex:i];NSString *name = [people objectForKey:@"name"];NSNumber *age = [people objectForKey:@"age"];NSLog(@"person withname=%@,age = %d",name,[age intValue]);NSDictionary *book = [people objectForKey:@"book"];NSString *bookname = [book objectForKey:@"title"];NSNumber *price = [book objectForKey:@"price"];NSLog(@"book with title=%@, price=%f",bookname,[price doubleValue]);}}-(void)dealloc {[btn release];[super dealloc]; }@end

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點擊按鈕得出的結(jié)果

2012-09-21 14:26:33.763 testapple[2922:c07] onbuttonclick

2012-09-21 14:26:33.764 testapple[2922:c07] count=2

2012-09-21 14:26:33.764 testapple[2922:c07] person withname=samyou,age = 18

2012-09-21 14:26:33.764 testapple[2922:c07] book with title=booooooook1, price=23.200000

2012-09-21 14:26:33.765 testapple[2922:c07] person withname=samsam,age = 22

2012-09-21 14:26:33.765 testapple[2922:c07] book with title=booooooook2, price=21.000000

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轉(zhuǎn)載于:https://www.cnblogs.com/lostinthenslog/archive/2012/09/21/2696851.html

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