自己封装的web请求

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// WebViewVC.h

// 封装url

// Created by CJW on 16/7/14.

第三方用到的是 NJKWebViewProgress 和 PureLayout

#import <UIKit/UIKit.h>

#import "NJKWebViewProgress.h"

#import "PureLayout.h"

@interface WebViewVC : UIViewController

@property (nonatomic,strong) NSString * url;//网址string

@property (nonatomic,strong) NSString * navTitle;//标题

@property (nonatomic,strong) NJKWebViewProgress * progressProxy;//进度条

@property (nonatomic,strong) UIWebView * webView;//网页展示

@property (nonatomic,strong) UIProgressView * progressBar;//进度条

@end

// WebViewVC.m

// 封装url

// Created by CJW on 16/7/14.

#import "WebViewVC.h"

@interface WebViewVC ()<UIWebViewDelegate,NJKWebViewProgressDelegate>

@end

@implementation WebViewVC

- (void)viewDidLoad {

[super viewDidLoad];

[self configUI];

[self goToWebView];

}

#pragma mark - 懒加载控件 -

//webView

-(UIWebView *)webView

{

if (!_webView)

{

_webView = [[UIWebView alloc]init];

}

return _webView;

}

//进度条

-(UIProgressView *)progressBar

{

if (!_progressBar)

{

_progressBar = [[UIProgressView alloc]init];

}

return _progressBar;

}

#pragma mark - 初始化UI -

-(void)configUI

{

UIBarButtonItem * backItem = [[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"back_Nav"] style:UIBarButtonItemStylePlain target:self action:@selector(goBack)];

UIBarButtonItem * closeWebItem = [[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"close"] style:UIBarButtonItemStylePlain target:self action:@selector(closeWebView)];

self.navigationItem.leftBarButtonItems = @[backItem,closeWebItem];

self.view.backgroundColor = [UIColor whiteColor];

_webView = [[UIWebView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];

_progressBar = [[UIProgressView alloc]init];

[self.view addSubview:self.webView];

[self.view addSubview:self.progressBar];

//布局

[_webView autoPinEdgesToSuperviewEdges];

[self.progressBar autoPinEdgesToSuperviewEdgesWithInsets:UIEdgeInsetsMake(0, 0, 0, 0) excludingEdge:ALEdgeBottom];

}

#pragma mark - 加载网页 -

-(void)goToWebView

{

_progressProxy = [[NJKWebViewProgress alloc]init];

_webView.delegate = self;

_webView.scalesPageToFit = YES;

_webView.allowsInlineMediaPlayback = YES;

_progressProxy.webViewProxyDelegate = self;

_progressProxy.progressDelegate = self;

NSURL * urlstr = [NSURL URLWithString:self.url];

NSLog(@"string -->%@",_url);

[_webView loadRequest:[NSURLRequest requestWithURL:urlstr]];

}

#pragma mark - 返回首页 -

-(void)closeWebView

{

[self.navigationController popViewControllerAnimated:YES];

}

#pragma mark - 放回上一页 -

-(void)goBack

{

if (_webView.canGoBack == YES)

{

[_webView goBack];

}

else{

[self.navigationController popViewControllerAnimated:YES];

}

#pragma mark - NJKWebViewProgressDelegate -

- (void)webViewProgress:(NJKWebViewProgress *)webViewProgress updateProgress:(float)progress

{

if (progress == 0.0)

{

[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;

self.progressBar.progress = 0;

[UIView animateWithDuration:0.27 animations:^{

self.progressBar.alpha = 1.0;

}];

}

if (progress == 1.0)

{

[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;

[UIView animateWithDuration:0.27 delay:(NSTimeInterval)(progress - _progressBar.progress) options:UIViewAnimationOptionLayoutSubviews animations:^{

self.progressBar.alpha = 0;

} completion:^(BOOL finished) {

}];

}

[self.progressBar setProgress:progress];

}

#pragma mark - UIWebViewDelegate -

-(BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType

{

NSLog(@"request--->%@",request);

return YES;

}

-(void)webViewDidStartLoad:(UIWebView *)webView

{

NSLog(@"%@",webView.request.URL.relativeString);

}

-(void)webViewDidFinishLoad:(UIWebView *)webView

{

if (_navTitle != nil && _navTitle.length >0)

{

self.title = _navTitle;

}

else

{

self.title = [webView stringByEvaluatingJavaScriptFromString:@"document.title"];

}

-(void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error

{

NSLog(@"error ---> %@",error);

}

- (void)didReceiveMemoryWarning {

[super didReceiveMemoryWarning];

}

@end

// CJWWebTool.h

// 封装url

// Created by CJW on 16/7/14.

#import <Foundation/Foundation.h>

#import <UIKit/UIKit.h>

@interface CJWWebTool : NSObject

+(void)goToWebViewWithVC:(UIViewController *)target withURL:(NSString *)url andTitle:(NSString *)title;

@end

// CJWWebTool.m

// 封装url

// Created by CJW on 16/7/14.

#import "CJWWebTool.h"

#import "WebViewVC.h"

@implementation CJWWebTool

+(void)goToWebViewWithVC:(UIViewController *)target withURL:(NSString *)url andTitle:(NSString *)title

{

NSLog(@"string -->%@",url);

WebViewVC * web = [[WebViewVC alloc]init];

web.url = url;

if (title != nil)

{

web.title = title;

}else

{

}

[target.navigationController pushViewController:web animated:YES];

}

@end

调用的时候只需要一句话

[CJWWebTool goToWebViewWithVC:self withURL:@"http://www.baidu.com" andTitle:@"百度一下"];