//

// HTMLViewController.m

// StudyiOS

//

// Created by on 11-10-27.

// Copyright (c) 2011年 ZhangYiCheng. All rights reserved.

//

#import "HTMLViewController.h"

#import "TFHpple.h"

@interface HTMLViewController()

-(NSString *)urlString:(NSString *)value;

@end

@implementation HTMLViewController

@synthesize textView;

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

{

self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

if (self) {

// Custom initialization

}

return self;

}

- (void)didReceiveMemoryWarning

{

// Releases the view if it doesn't have a superview.

[super didReceiveMemoryWarning];

// Release any cached data, images, etc that aren't in use.

}

#pragma mark - View lifecycle

/*

// Implement loadView to create a view hierarchy programmatically, without using a nib.

- (void)loadView

{

}

*/

- (void)viewDidLoad

{

// 增加Code按钮，可跳转至教学页面

UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithTitle:@"Code" style:UIBarButtonItemStyleBordered target:self action:@selector(code)];

self.navigationItem.rightBarButtonItem = item;

[super viewDidLoad];

}

- (void)viewDidUnload

{

[self setTextView:nil];

[super viewDidUnload];

// Release any retained subviews of the main view.

// e.g. self.myOutlet = nil;

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

// Return YES for supported orientations

return (interfaceOrientation == UIInterfaceOrientationPortrait);

}

- (IBAction)HTMLParse:(id)sender {

// 得到网页DATA

NSString *urlString = @"http://www.baidu.com";

NSData *htmlData = [NSData dataWithContentsOfURL:[NSURL URLWithString:urlString]];

// 创建TFHpple对象

TFHpple *xpathParser = [[TFHpple alloc] initWithHTMLData:htmlData];

// 通过xpath语法解析

NSArray *elements = [xpathParser searchWithXPathQuery:@"//title"];

TFHppleElement *element = [elements objectAtIndex:0];

NSString *myTitle = [element content];

// 更新UI

self.textView.text = myTitle;

}

//访问网站源码

- (NSString *)urlString:(NSString *)value {

NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:value]];

//解决中文乱码,可以有很多编码格式,以你要抓取的网页编码格式为准

NSStringEncoding enc = CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingGB_18030_2000);

NSString *retStr = [[NSString alloc] initWithData:data encoding:enc];

NSLog(@"获取到的值：%@",retStr);

return retStr;

}

// 跳转至教学页面

- (void)code

{

CodeViewController *controller = [[CodeViewController alloc] init];

NSString *name = [NSString stringWithUTF8String:object_getClassName(self)];

controller.className = name;

[self.navigationController pushViewController:controller animated:YES];

}

@end