新建一个Singal View Application 的工程，并在.xib文件中拖入如下控件
。
为每个控件都关联一个outlet，
@property (retain, nonatomic) IBOutlet UILabel *_todayInfo;@property (retain, nonatomic) IBOutlet UILabel *_todayTemp;@property (retain, nonatomic) IBOutlet UIImageView *_imageviewtoday;@property (retain, nonatomic) IBOutlet UILabel *_nextInfo;@property (retain, nonatomic) IBOutlet UILabel *_nextTemp;@property (retain, nonatomic) IBOutlet UIImageView *_imageviewtomorrow;
解析XML首先要导入两个库。
导入 SDWebImage开源库<1>
v 1 .首先 添加 SDWebImage project 进我们的工程
v
v 2. 添加依赖
v 在 “Build Phases” ->“Link Binary With Libraries” 添加 “ ImageIO.framework ”
v
v 3. 添加 Linker Flag
v 打开 “Build Settings” - > “Linking” ->“Other Linker Flags” 添加 " - ObjC ”
v
v 4. 在使用的地方添加头文件
v # import < SDWebImage / UIImageView+WebCache.h >
<2>
v 再添加 GDataXML 库
v 1 . 选中项目，选中“ Build Setting” 标签页，将顶部的“ basic” 标签页切换到“ all”
v 2. 找到“ search Paths” 的“ header search path” 项，并添加“ /user/include/libxml2" 到列表中。
v “ /Applications/ Xcode.app /Contents/Developer/Platforms/ iPhoneOS.platform /Developer/SDKs/iPhoneOS6.1.sdk/ usr /include/libxml2 ”
v 3. 找到” Linking\other linker Flags“ 项，并添加” -lxml2“ 到列表中。
添加依赖
v4.在“Build Phases” ->“Link Binary With Libraries” 添加
frameworks：libxml2.2.dylb
接着在ViewController.m文件中引入两个库的头文件
#import最后在- ( void)viewDidLoad{ }函数中加入如下代码：#import "GDataXMLNode.h"
- (void)viewDidLoad{ [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. NSString *url = [@"http://webservice.webxml.com.cn/webservices/weatherwebservice.asmx/getWeatherbyCityName?thecityname=广州" stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; NSString *xml=[NSString stringWithContentsOfURL:[NSURL URLWithString:url] encoding:NSUTF8StringEncoding error:nil]; GDataXMLDocument *doc = [[[GDataXMLDocument alloc]initWithXMLString:xml options:0 error:nil]autorelease]; NSArray *nodes=[doc.rootElement children]; for(GDataXMLNode *node in nodes){ NSLog(@"node=%@",[node stringValue]); } GDataXMLNode *n1 = [nodes objectAtIndex:6]; _todayInfo.text=[n1 stringValue]; GDataXMLNode *n2 = [nodes objectAtIndex:5]; _todayTemp.text=[n2 stringValue]; GDataXMLNode *n3 = [nodes objectAtIndex:13]; _nextInfo.text=[n3 stringValue]; GDataXMLNode *n4 = [nodes objectAtIndex:12]; _nextTemp.text=[n4 stringValue]; GDataXMLNode *n5 = [nodes objectAtIndex:9]; GDataXMLNode *n6 = [nodes objectAtIndex:16]; NSString *strImage=[NSString stringWithFormat:@"http://www.webxml.com.cn/images/weather/b_%@",[n5 stringValue]]; [_imageviewtoday setImageWithURL:[NSURL URLWithString:strImage] placeholderImage:[UIImage imageNamed:@"b_nothing.gif"]]; strImage=[NSString stringWithFormat:@"http://www.webxml.com.cn/images/weather/b_%@",[n6 stringValue]]; [_imageviewtomorrow setImageWithURL:[NSURL URLWithString:strImage] placeholderImage:[UIImage imageNamed:@"b_nothing.gif"]];} 运行结果如下，已经正确的从网上读取到xml文件并解析成功。
以上链接的XML文件如下，可以对照着XML文件和代码，看看是如何解析xml的。
This XML file does not appear to have any style information associated with it. The document tree is shown below.