XML 数据请求与JSON 数据请求
来源：互联网 发布：php冒泡排序是什么意思 编辑：程序博客网 时间：2024/05/30 04:18
（1）XML 数据请求
使用 AFNetworking 中的 AFHTTPRequestOperation 和 AFXMLParserResponseSerializer，另外结合第三方框架 XMLDictionary 进行数据转换
使用 XMLDictionary 的好处：有效避免自行实现 NSXMLParserDelegate 委托代理协议方法来进行繁琐的数据拼凑解析
（2）JSON 数据请求
使用 AFNetworking 中的 AFHTTPRequestOperation 或 AFHTTPRequestOperationManager，另外在图片缓存方面可选的方案有：
使用 AFNetworking 中 的 UIImageView+AFNetworking
使用第三方框架 SDWebImage 的 UIImageView+WebCache
效果如下：
XML 数据格式：
请求网址：http://www.webxml.com.cn/WebServices/WeatherWebService.asmx/getWeatherbyCityName?theCityName=59287
View Code
JSON 数据格式：
请求网址：https://alpha-api.app.net/stream/0/posts/stream/global
View Code
ViewController.h
1 #import <UIKit/UIKit.h>2 3 @interface ViewController : UITableViewController4 @property (copy, nonatomic) NSArray *arrSampleName;5 6 - (instancetype)initWithSampleNameArray:(NSArray *)arrSampleName;7 8 @end
ViewController.m
1 #import "ViewController.h" 2 #import "XMLRequestViewController.h" 3 #import "JSONRequestViewController.h" 4 5 @interface ViewController () 6 - (void)layoutUI; 7 @end 8 9 @implementation ViewController10 - (void)viewDidLoad {11 [super viewDidLoad];12 13 [self layoutUI];14 }15 16 - (void)didReceiveMemoryWarning {17 [super didReceiveMemoryWarning];18 // Dispose of any resources that can be recreated.19 }20 21 - (instancetype)initWithSampleNameArray:(NSArray *)arrSampleName {22 if (self = [super initWithStyle:UITableViewStyleGrouped]) {23 self.navigationItem.title = @"使用 AFNetworking 进行数据请求";24 self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"返回" style:UIBarButtonItemStylePlain target:nil action:nil];25 26 _arrSampleName = arrSampleName;27 }28 return self;29 }30 31 - (void)layoutUI {32 33 }34 35 #pragma mark - UITableViewController相关方法重写36 - (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {37 return 0.1;38 }39 40 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {41 return 1;42 }43 44 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {45 return [_arrSampleName count];46 }47 48 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {49 static NSString *cellIdentifier = @"cell";50 UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];51 if (!cell) {52 cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];53 }54 cell.textLabel.text = _arrSampleName[indexPath.row];55 return cell;56 }57 58 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {59 switch (indexPath.row) {60 case 0: {61 XMLRequestViewController *XMLRequestVC = [XMLRequestViewController new];62 [self.navigationController pushViewController:XMLRequestVC animated:YES];63 break;64 }65 case 1: {66 JSONRequestViewController *JSONRequestVC = [JSONRequestViewController new];67 [self.navigationController pushViewController:JSONRequestVC animated:YES];68 break;69 70 /*71 类似堆栈的先进后出的原理：72 返回到（上一级）、（任意级）、（根级）导航73 [self.navigationController popViewControllerAnimated:YES];74 [self.navigationController popToViewController:thirdSampleVC animated:YES];75 [self.navigationController popToRootViewControllerAnimated:YES];76 */77 }78 default:79 break;80 }81 }82 83 @end
PrefixHeader.pch
1 #define kXMLRequestURLStr @"http://www.webxml.com.cn/WebServices/WeatherWebService.asmx/getWeatherbyCityName?theCityName=59287" 2 #define kJSONRequestURLStr @"https://alpha-api.app.net/stream/0/posts/stream/global" 3 4 #define kTitleOfXMLRequest @"XML 数据请求" 5 #define kTitleOfJSONRequest @"JSON 数据请求" 6 7 #define kAvatarImageStr @"avatarImageStr" 8 #define kName @"name" 9 #define kText @"text"10 #define kLink @"link"11 #define kCreatedAt @"createdAt"12 13 #define kApplication [UIApplication sharedApplication]
UIButton+BeautifulButton.h
1 #import <UIKit/UIKit.h> 2 3 @interface UIButton (BeautifulButton) 4 /** 5 * 根据按钮文字颜色，返回对应文字颜色的圆角按钮 6 * 7 * @param tintColor 按钮文字颜色；nil 的话就为深灰色 8 */ 9 - (void)beautifulButton:(UIColor *)tintColor;10 11 @end
UIButton+BeautifulButton.m
1 #import "UIButton+BeautifulButton.h" 2 3 @implementation UIButton (BeautifulButton) 4 5 - (void)beautifulButton:(UIColor *)tintColor { 6 self.tintColor = tintColor ?: [UIColor darkGrayColor]; 7 self.layer.masksToBounds = YES; 8 self.layer.cornerRadius = 10.0; 9 self.layer.borderColor = [UIColor grayColor].CGColor;10 self.layer.borderWidth = 1.0;11 }12 13 @end
NSString+OpenURL.h
1 #import <UIKit/UIKit.h> 2 3 @interface NSString (OpenURL) 4 /** 5 * 打开浏览器 6 */ 7 - (void)openByBrowser; 8 9 /**10 * 打开邮件11 */12 - (void)openByEmail;13 14 /**15 * 拨打电话16 */17 - (void)openByTelephone;18 19 /**20 * 打开短信（Short Messaging Service）21 */22 - (void)openBySMS;23 24 @end
NSString+OpenURL.m
1 #import "NSString+OpenURL.h" 2 3 @implementation NSString (OpenURL) 4 5 + (void)open:(NSString *)openURLStr { 6 [[UIApplication sharedApplication] openURL:[NSURL URLWithString:openURLStr]]; 7 } 8 9 - (void)openByBrowser {10 [NSString open:self];11 }12 13 - (void)openByEmail {14 [NSString open:[NSString stringWithFormat:@"mailto://%@", self]];15 }16 17 - (void)openByTelephone {18 [NSString open:[NSString stringWithFormat:@"tel://%@", self]];19 }20 21 - (void)openBySMS {22 [NSString open:[NSString stringWithFormat:@"sms://%@", self]];23 }24 25 @end
KMTableViewCell.h
1 #import <UIKit/UIKit.h> 2 3 @interface KMTableViewCell : UITableViewCell 4 @property (strong, nonatomic) IBOutlet UIImageView *imgVAvatarImage; 5 @property (strong, nonatomic) IBOutlet UILabel *lblName; 6 @property (strong, nonatomic) IBOutlet UILabel *lblCreatedAt; 7 @property (strong, nonatomic) IBOutlet UIImageView *imgVLink; 8 9 @property (strong, nonatomic) UILabel *lblText;10 @property (copy, nonatomic) NSString *avatarImageStr;11 @property (copy, nonatomic) NSString *name;12 @property (copy, nonatomic) NSString *text;13 @property (copy, nonatomic) NSString *createdAt;14 @property (assign, nonatomic, getter=isHaveLink) BOOL haveLink;15 16 @end
KMTableViewCell.m
1 #import "KMTableViewCell.h" 2 //#import "UIImageView+AFNetworking.h" 3 #import "UIImageView+WebCache.h" 4 5 static UIImage *placeholderImage; 6 static CGFloat widthOfLabel; 7 @implementation KMTableViewCell 8 9 - (void)awakeFromNib {10 // Initialization code11 static dispatch_once_t onceToken;12 dispatch_once(&onceToken, ^{13 placeholderImage = [UIImage imageNamed:@"JSON"];14 widthOfLabel = [[UIScreen mainScreen] bounds].size.width - 100.0;15 });16 17 _imgVAvatarImage.layer.masksToBounds = YES;18 _imgVAvatarImage.layer.cornerRadius = 10.0;19 20 //由于 xib 中对标签自适应宽度找不到合适的方式来控制，所以这里用代码编写；这里屏幕复用的 Cell 有几个，就会执行几次 awakeFromNib 方法21 _lblText = [[UILabel alloc] initWithFrame:CGRectMake(90.0, 23.0, widthOfLabel, 42.0)];22 _lblText.numberOfLines = 2;23 _lblText.font = [UIFont systemFontOfSize:12.0];24 [self addSubview:_lblText];25 }26 27 - (void)setSelected:(BOOL)selected animated:(BOOL)animated {28 [super setSelected:selected animated:animated];29 30 // Configure the view for the selected state31 }32 33 - (void)setAvatarImageStr:(NSString *)avatarImageStr {34 if (![_avatarImageStr isEqualToString:avatarImageStr]) {35 _avatarImageStr = [avatarImageStr copy];36 NSURL *avatarImageURL = [NSURL URLWithString:_avatarImageStr];37 //NSData *avatarImageData = [NSData dataWithContentsOfURL:avatarImageURL];38 //_imgVAvatarImage.image = [UIImage imageWithData:avatarImageData];39 40 //图片缓存；性能优化的第一步41 //方法一：AFNetworking 框架：UIImageView+AFNetworking42 // [_imgVAvatarImage setImageWithURL:avatarImageURL43 // placeholderImage:placeholderImage];44 45 //方法二：SDWebImage 框架：UIImageView+WebCache46 [_imgVAvatarImage sd_setImageWithURL:avatarImageURL47 placeholderImage:placeholderImage];48 }49 }50 51 - (void)setName:(NSString *)name {52 _name = [name copy];53 _lblName.text = _name;54 }55 56 - (void)setText:(NSString *)text {57 _text = [text copy];58 _lblText.text = _text;59 }60 61 - (void)setCreatedAt:(NSString *)createdAt {62 _createdAt = [createdAt copy];63 _lblCreatedAt.text = _createdAt;64 }65 66 - (void)setHaveLink:(BOOL)haveLink {67 _haveLink = haveLink;68 _imgVLink.hidden = !_haveLink;69 }70 71 @end
KMTableViewCell.xib
View Code
XMLRequestViewController.h
1 #import <UIKit/UIKit.h>2 3 @interface XMLRequestViewController : UIViewController <NSXMLParserDelegate>4 @property (strong, nonatomic) UITextView *txtVResult;5 6 @property (strong, nonatomic) IBOutlet UIButton *btnSendRequest;7 8 @end
XMLRequestViewController.m
1 #import "XMLRequestViewController.h" 2 #import "AFNetworking.h" 3 #import "AFNetworkActivityIndicatorManager.h" 4 #import "UIButton+BeautifulButton.h" 5 #import "XMLDictionary.h" 6 7 @interface XMLRequestViewController () 8 - (void)layoutUI; 9 - (void)convertXMLParserToDictionary:(NSXMLParser *)parser; 10 @end 11 12 @implementation XMLRequestViewController 13 14 - (void)viewDidLoad { 15 [super viewDidLoad]; 16 17 [self layoutUI]; 18 } 19 20 - (void)didReceiveMemoryWarning { 21 [super didReceiveMemoryWarning]; 22 // Dispose of any resources that can be recreated. 23 } 24 25 - (void)layoutUI { 26 self.navigationItem.title = kTitleOfXMLRequest; 27 28 [_btnSendRequest beautifulButton:nil]; 29 30 _txtVResult = [UITextView new]; 31 _txtVResult.editable = NO; 32 CGRect rect = [[UIScreen mainScreen] bounds]; 33 _txtVResult.frame = CGRectMake(5.0, 64.0, rect.size.width - 10.0, rect.size.height - 164.0); 34 _txtVResult.font = [UIFont systemFontOfSize:15.0]; 35 _txtVResult.text = @"点击「发送请求」按钮获取天气信息"; 36 [self.view addSubview:_txtVResult]; 37 38 //启动网络活动指示器；会根据网络交互情况，实时显示或隐藏网络活动指示器；他通过「通知与消息机制」来实现 [UIApplication sharedApplication].networkActivityIndicatorVisible 的控制 39 [AFNetworkActivityIndicatorManager sharedManager].enabled = YES; 40 } 41 42 - (void)convertXMLParserToDictionary:(NSXMLParser *)parser { 43 //dictionaryWithXMLParser: 是第三方框架 XMLDictionary 的方法 44 NSDictionary *dic = [NSDictionary dictionaryWithXMLParser:parser]; 45 NSMutableString *mStrWeatherInfo = [[NSMutableString alloc] initWithString:@"广州近三天天气情况：\n"]; 46 NSArray *arrWeatherInfo = [dic objectForKey:@"string"]; 47 if (arrWeatherInfo != nil && arrWeatherInfo.count > 22) { 48 NSMutableArray *mArrRange = [[NSMutableArray alloc] init]; 49 50 NSUInteger loc = mStrWeatherInfo.length; 51 [mStrWeatherInfo appendFormat:@"\n %@", arrWeatherInfo[6]]; 52 NSUInteger len = mStrWeatherInfo.length - loc; 53 NSValue *valObj = [NSValue valueWithRange:NSMakeRange(loc, len)]; 54 [mArrRange addObject:valObj]; 55 [mStrWeatherInfo appendFormat:@"\n %@", arrWeatherInfo[5]]; 56 [mStrWeatherInfo appendFormat:@"\n %@", arrWeatherInfo[7]]; 57 [mStrWeatherInfo appendFormat:@"\n %@", arrWeatherInfo[10]]; 58 59 loc = mStrWeatherInfo.length; 60 [mStrWeatherInfo appendFormat:@"\n\n %@", arrWeatherInfo[13]]; 61 len = mStrWeatherInfo.length - loc; 62 valObj = [NSValue valueWithRange:NSMakeRange(loc, len)]; 63 [mArrRange addObject:valObj]; 64 [mStrWeatherInfo appendFormat:@"\n %@", arrWeatherInfo[12]]; 65 [mStrWeatherInfo appendFormat:@"\n %@", arrWeatherInfo[14]]; 66 67 loc = mStrWeatherInfo.length; 68 [mStrWeatherInfo appendFormat:@"\n\n %@", arrWeatherInfo[18]]; 69 len = mStrWeatherInfo.length - loc; 70 valObj = [NSValue valueWithRange:NSMakeRange(loc, len)]; 71 [mArrRange addObject:valObj]; 72 [mStrWeatherInfo appendFormat:@"\n %@", arrWeatherInfo[17]]; 73 [mStrWeatherInfo appendFormat:@"\n %@", arrWeatherInfo[19]]; 74 75 [mStrWeatherInfo appendFormat:@"\n\n %@", arrWeatherInfo[22]]; 76 77 //数据的前10个字符以16.0像素加粗显示；这里使用 UITextView 的 attributedText，而他的 text 无法实现这种需求 78 NSMutableAttributedString *mAttrStr = [[NSMutableAttributedString alloc] initWithString:mStrWeatherInfo]; 79 [mAttrStr addAttribute:NSFontAttributeName 80 value:[UIFont boldSystemFontOfSize:16.0] 81 range:NSMakeRange(0, 10)]; 82 83 //数据的日期部分以紫色显示 84 for (NSValue *valObj in mArrRange) { 85 NSRange currentRange; 86 [valObj getValue:¤tRange]; 87 [mAttrStr addAttribute:NSForegroundColorAttributeName 88 value:[UIColor purpleColor] 89 range:currentRange]; 90 } 91 92 //数据的前10个字符之后的内容全部以15.0像素显示 93 [mAttrStr addAttribute:NSFontAttributeName 94 value:[UIFont systemFontOfSize:15.0] 95 range:NSMakeRange(10, mStrWeatherInfo.length - 10)]; 96 97 _txtVResult.attributedText = mAttrStr; 98 } else { 99 _txtVResult.text = @"请求数据无效";100 }101 102 }103 104 - (IBAction)sendRequest:(id)sender {105 NSURL *requestURL = [NSURL URLWithString:kXMLRequestURLStr];106 NSURLRequest *request = [NSURLRequest requestWithURL:requestURL];107 AFHTTPRequestOperation *op = [[AFHTTPRequestOperation alloc] initWithRequest:request];108 op.responseSerializer = [AFXMLParserResponseSerializer serializer];109 [op setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {110 NSLog(@"JSON: %@", responseObject);111 NSXMLParser *parser = (NSXMLParser *)responseObject;112 //这里使用了第三方框架 XMLDictionary，他本身继承并实现 NSXMLParserDelegate 委托代理协议，对数据进行遍历处理113 [self convertXMLParserToDictionary:parser];114 115 //parser.delegate = self;116 //parser.shouldProcessNamespaces = YES;117 //[parser parse];118 } failure:^(AFHTTPRequestOperation *operation, NSError *error) {119 NSLog(@"Error: %@", error);120 }];121 //start 是 AFNetworking 的自定义方法，他在自定义的线程中去执行操作；不是 NSOperation 对象实例的 start 方法，所以可以不用使用把操作添加到操作主队列的方法：[[NSOperationQueue mainQueue] addOperation:op]122 [op start];123 }124 125 126 #pragma mark -127 #pragma mark NSXMLParserDelegate128 /* 开始解析 XML 文件，在开始解析 XML 节点前，通过该方法可以做一些初始化工作 */129 - (void)parserDidStartDocument:(NSXMLParser *)parser {130 NSLog(@"开始解析 XML 文件");131 }132 133 /* 当解析器对象遇到 XML 的开始标记时，调用这个方法开始解析该节点 */134 - (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName135 attributes:(NSDictionary *)attributeDict {136 NSLog(@"发现节点：%@", elementName);137 }138 139 /* 当解析器找到开始标记和结束标记之间的字符时，调用这个方法解析当前节点的所有字符 */140 - (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {141 NSLog(@"正在解析节点内容：%@", string);142 }143 144 /* 当解析器对象遇到 XML 的结束标记时，调用这个方法完成解析该节点 */145 - (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName {146 NSLog(@"解析节点结束：%@", elementName);147 }148 149 /* 解析 XML 出错的处理方法 */150 - (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError {151 NSLog(@"解析 XML 出错：%@", parseError);152 }153 154 /* 解析 XML 文件结束 */155 - (void)parserDidEndDocument:(NSXMLParser *)parser {156 NSLog(@"解析 XML 文件结束");157 }158 159 @end
XMLRequestViewController.xib
View Code
JSONRequestViewController.h
1 #import <UIKit/UIKit.h> 2 3 @interface JSONRequestViewController : UIViewController <UITableViewDataSource, UITableViewDelegate, UIWebViewDelegate> 4 @property (strong, nonatomic) NSMutableArray *mArrCell; 5 @property (strong, nonatomic) UITableView *tableView; 6 @property (strong, nonatomic) UILabel *lblEmptyDataMsg; 7 @property (strong, nonatomic) UIWebView *webView; 8 9 @property (strong, nonatomic) IBOutlet UIButton *btnSendRequest;10 11 @end
JSONRequestViewController.m
1 #import "JSONRequestViewController.h" 2 #import "AFNetworking.h" 3 #import "AFNetworkActivityIndicatorManager.h" 4 #import "UIButton+BeautifulButton.h" 5 #import "KMTableViewCell.h" 6 #import "NSString+OpenURL.h" 7 8 static NSString *cellIdentifier = @"cellIdentifier"; 9 @interface JSONRequestViewController () 10 - (void)layoutUI; 11 - (NSString *)displayTimeFromCreatedAt:(NSString *)createdAt; 12 - (void)loadData:(NSArray *)arrData; 13 @end 14 15 @implementation JSONRequestViewController 16 17 - (void)viewDidLoad { 18 [super viewDidLoad]; 19 20 [self layoutUI]; 21 } 22 23 - (void)didReceiveMemoryWarning { 24 [super didReceiveMemoryWarning]; 25 // Dispose of any resources that can be recreated. 26 } 27 28 - (void)layoutUI { 29 self.navigationItem.title = kTitleOfJSONRequest; 30 31 [_btnSendRequest beautifulButton:nil]; 32 33 _mArrCell = [[NSMutableArray alloc] initWithCapacity:0]; 34 35 CGRect rect = [[UIScreen mainScreen] bounds]; 36 CGRect frame = CGRectMake(5.0, 64.0, rect.size.width - 10.0, rect.size.height - 164.0); 37 _tableView =[[UITableView alloc] initWithFrame:frame style:UITableViewStylePlain]; 38 _tableView.dataSource = self; 39 _tableView.delegate = self; 40 //设置边距，解决单元格分割线默认偏移像素过多的问题 41 if ([_tableView respondsToSelector:@selector(setSeparatorInset:)]) { 42 [_tableView setSeparatorInset:UIEdgeInsetsZero]; //设置单元格（上左下右）内边距 43 } 44 if ([_tableView respondsToSelector:@selector(setLayoutMargins:)]) { 45 [_tableView setLayoutMargins:UIEdgeInsetsZero]; //设置单元格（上左下右）外边距 46 } 47 [self.view addSubview:_tableView]; 48 49 //注册可复用的单元格 50 UINib *nib = [UINib nibWithNibName:@"KMTableViewCell" bundle:nil]; 51 [_tableView registerNib:nib forCellReuseIdentifier:cellIdentifier]; 52 53 //空数据时，显示的提示内容 54 _lblEmptyDataMsg = [[UILabel alloc] initWithFrame:CGRectMake(0.0, 0.0, 300.0, 50.0)]; 55 CGPoint newPoint = _tableView.center; 56 newPoint.y -= 45.0; 57 _lblEmptyDataMsg.center = newPoint; 58 _lblEmptyDataMsg.text = @"点击「发送请求」按钮获取全球新闻信息"; 59 _lblEmptyDataMsg.textColor = [UIColor grayColor]; 60 _lblEmptyDataMsg.textAlignment = NSTextAlignmentCenter; 61 _lblEmptyDataMsg.font = [UIFont systemFontOfSize:16.0]; 62 [_tableView addSubview:_lblEmptyDataMsg]; 63 64 //点击单元格时，显示的新闻信息详细内容 65 frame = CGRectMake(10.0, CGRectGetMidY(rect) - 200.0, rect.size.width - 20.0, 400.0); 66 _webView = [[UIWebView alloc] initWithFrame:frame]; 67 _webView.layer.borderColor = [UIColor lightGrayColor].CGColor; 68 _webView.layer.borderWidth = 1.0; 69 _webView.delegate = self; 70 _webView.hidden = YES; 71 [self.view addSubview:_webView]; 72 73 [AFNetworkActivityIndicatorManager sharedManager].enabled = YES; 74 } 75 76 - (NSString *)displayTimeFromCreatedAt:(NSString *)createdAt { 77 NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init]; 78 [dateFormat setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss'Z'"]; //「2015-09-15T13:23:28Z」 79 NSDate *date = [dateFormat dateFromString:createdAt]; 80 81 NSTimeZone *zone = [NSTimeZone systemTimeZone]; 82 NSInteger interval = [zone secondsFromGMTForDate:date]; //跟 GMT 时间相差8小时 83 date = [date dateByAddingTimeInterval:interval]; 84 [dateFormat setDateFormat:@"yyyy-MM-dd HH:mm:ss"]; //转化为「2015-09-15 21:23:28」 85 NSString *displayTime = [dateFormat stringFromDate:date]; 86 return displayTime; 87 } 88 89 - (void)loadData:(NSArray *)arrData { 90 _mArrCell = [NSMutableArray new]; 91 [arrData enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) { 92 NSMutableDictionary *mDicCell = [NSMutableDictionary new]; 93 NSDictionary *dicRoot = (NSDictionary *)obj; 94 NSArray *arrLink = [dicRoot valueForKeyPath:@"entities.links"]; 95 [mDicCell setValue:[NSString stringWithFormat:@"%@?w=80&h=80", 96 [dicRoot valueForKeyPath:@"user.avatar_image.url"]] 97 forKey:kAvatarImageStr]; 98 [mDicCell setValue:[dicRoot valueForKeyPath:@"user.name"] forKey:kName]; 99 [mDicCell setValue:[dicRoot valueForKey:@"text"] forKey:kText];100 [mDicCell setValue:(arrLink.count > 0 ? [arrLink[0] valueForKey:@"url"] : @"")101 forKey:kLink];102 [mDicCell setValue:[self displayTimeFromCreatedAt:[dicRoot valueForKey:@"created_at"]]103 forKey:kCreatedAt];104 [_mArrCell addObject:mDicCell];105 }];106 [self.tableView reloadData];107 }108 109 - (IBAction)sendRequest:(id)sender {110 _lblEmptyDataMsg.text = @"加载中...";111 _webView.hidden = YES;112 113 //方法一：AFHTTPRequestOperation114 // NSURL *requestURL = [NSURL URLWithString:kJSONRequestURLStr];115 // NSURLRequest *request = [NSURLRequest requestWithURL:requestURL];116 // AFHTTPRequestOperation *op = [[AFHTTPRequestOperation alloc] initWithRequest:request];117 // op.responseSerializer = [AFJSONResponseSerializer serializer];118 // [op setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {119 // NSDictionary *dic = (NSDictionary *)responseObject;120 // [self loadData:(NSArray *)dic[@"data"]];121 // } failure:^(AFHTTPRequestOperation *operation, NSError *error) {122 // NSLog(@"Error: %@", error);123 // }];124 // //start 是 AFNetworking 的自定义方法，他在自定义的线程中去执行操作；不是 NSOperation 对象实例的 start 方法，所以可以不用使用把操作添加到操作主队列的方法：[[NSOperationQueue mainQueue] addOperation:op]125 // [op start];126 127 //方法二：AFHTTPRequestOperationManager128 AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];129 [manager GET:kJSONRequestURLStr parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {130 NSDictionary *dic = (NSDictionary *)responseObject;131 [self loadData:(NSArray *)dic[@"data"]];132 } failure:^(AFHTTPRequestOperation *operation, NSError *error) {133 NSLog(@"Error: %@", error);134 }];135 }136 137 - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {138 _webView.hidden = YES;139 }140 141 #pragma mark - TableView142 - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {143 return @"全球新闻信息列表";144 }145 146 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {147 return 1;148 }149 150 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {151 NSUInteger count = _mArrCell.count;152 _lblEmptyDataMsg.hidden = count > 0;153 154 return count;155 }156 157 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {158 KMTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];159 if (!cell) {160 cell = [[KMTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault161 reuseIdentifier:cellIdentifier];162 }163 164 NSMutableDictionary *mDicCell = _mArrCell[indexPath.row];165 cell.avatarImageStr = mDicCell[kAvatarImageStr];166 cell.name = mDicCell[kName];167 cell.text = mDicCell[kText];168 cell.createdAt = mDicCell[kCreatedAt];169 cell.haveLink = [mDicCell[kLink] length] > 0; //可以通过 isHaveLink 或 haveLink 获取值170 return cell;171 }172 173 - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {174 return 90.0;175 }176 177 - (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {178 /*179 viewDidLoad 中对应的操作180 if ([_tableView respondsToSelector:@selector(setSeparatorInset:)]) {181 [_tableView setSeparatorInset:UIEdgeInsetsZero]; //设置单元格（上左下右）内边距182 }183 if ([_tableView respondsToSelector:@selector(setLayoutMargins:)]) {184 [_tableView setLayoutMargins:UIEdgeInsetsZero]; //设置单元格（上左下右）外边距185 }186 */187 188 if ([cell respondsToSelector:@selector(setSeparatorInset:)]) {189 [cell setSeparatorInset:UIEdgeInsetsZero];190 }191 if ([cell respondsToSelector:@selector(setLayoutMargins:)]) {192 [cell setLayoutMargins:UIEdgeInsetsZero];193 }194 }195 196 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {197 NSMutableDictionary *mDicCell = _mArrCell[indexPath.row];198 NSString *link = mDicCell[kLink];199 if (link.length > 0) {200 //使用浏览器打开网址201 //[link openByBrowser];202 203 //使用 WebView 打开网址；由于这里很多网址是外国的，存在有的访问不了、有的访问慢导致加载超时的情况204 NSURLRequest *request = [[NSURLRequest alloc] initWithURL:[NSURL URLWithString:link]];205 [_webView loadRequest:request];206 _webView.hidden = NO;207 }208 }209 210 #pragma mark - WebView211 - (void)webViewDidStartLoad:(UIWebView *)webView {212 kApplication.networkActivityIndicatorVisible = YES;213 }214 215 - (void)webViewDidFinishLoad:(UIWebView *)webView {216 kApplication.networkActivityIndicatorVisible = NO;217 }218 219 - (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error {220 NSLog(@"Error: %@", error);221 webView.hidden = YES;222 kApplication.networkActivityIndicatorVisible = NO;223 UIAlertView *alertVCustom = [[UIAlertView alloc] initWithTitle:@"提示信息"224 message:@"网络连接错误"225 delegate:nil226 cancelButtonTitle:@"确定"227 otherButtonTitles:nil, nil];228 [alertVCustom show];229 }230 231 @end
JSONRequestViewController.xib
View Code
AppDelegate.h
1 #import <UIKit/UIKit.h>2 3 @interface AppDelegate : UIResponder <UIApplicationDelegate>4 5 @property (strong, nonatomic) UIWindow *window;6 @property (strong, nonatomic) UINavigationController *navigationController;7 8 @end
AppDelegate.m
1 #import "AppDelegate.h" 2 #import "ViewController.h" 3 4 @interface AppDelegate () 5 6 @end 7 8 @implementation AppDelegate 9 10 11 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {12 _window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];13 ViewController *viewController = [[ViewController alloc]14 initWithSampleNameArray:@[ kTitleOfXMLRequest,15 kTitleOfJSONRequest ]];16 _navigationController = [[UINavigationController alloc] initWithRootViewController:viewController];17 _window.rootViewController = _navigationController;18 //[_window addSubview:_navigationController.view]; //当_window.rootViewController关联时，这一句可有可无19 [_window makeKeyAndVisible];20 return YES;21 }22 23 - (void)applicationWillResignActive:(UIApplication *)application {24 }25 26 - (void)applicationDidEnterBackground:(UIApplication *)application {27 }28 29 - (void)applicationWillEnterForeground:(UIApplication *)application {30 }31 32 - (void)applicationDidBecomeActive:(UIApplication *)application {33 }34 35 - (void)applicationWillTerminate:(UIApplication *)application {36 }37 38 @end
0 0
- XML 数据请求与JSON 数据请求
- IOS 请求数据解析 XML 和 JSON
- XMLhttpRequest 请求 XML,JSON ,POJO 数据
- JQuery请求JSON数据
- JSON请求天气预报数据
- 请求网络数据JSON
- volley JSON请求数据
- volley JSON请求数据
- structs2 请求json数据
- echarts-JSON请求数据
- AFNnetworking请求json数据
- HttpClient请求json数据
- HttpURLConnection请求json数据
- ajax请求json数据
- OkHttp请求json数据
- ajax请求json数据
- okhttp请求json数据
- Jquery Json数据请求与处理
- 在链表中插入节点时候的一个trick
- cocos3.8屏幕截图
- ObjectAnimator详解（测试用，承接Android动画操作中的测试）
- 一个实时获取股票数据的安卓应用程序
- Object-C 空@selector
- XML 数据请求与JSON 数据请求
- MapReduce案例学习(7) 列出名字以J开头的员工姓名及其所属部门名称
- java 值传递跟引用传递在内存中怎么分配的
- Linux中的sleep函数
- 段式存储管理 Vs 页式存储管理 Vs 段页式存储管理
- visual studio 2010 的openGL环境的搭建
- GCC参数含义
- Web开发常见的几个漏洞解决方法
- python代码覆盖率工具——coverage
