关于NJKWebViewProgress的纯代码编写。

最新推荐文章于 2019-03-06 14:36:14 发布

DevilanXuan

最新推荐文章于 2019-03-06 14:36:14 发布

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CC 4.0 BY-SA版权

文章标签： iOS objective

本文链接：https://blog.youkuaiyun.com/DevilanXuan/article/details/50488597

本文介绍如何在iOS应用中使用NJKWebViewProgress库实现在UIWebView加载网页时显示进度条，通过设置代理方法更新进度，并在视图生命周期中添加和移除进度视图。

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代码如下：

// ViewController.m

// NJKWebViewTest

#import "ViewController.h"

#import "NJKWebViewProgress.h"

#import "NJKWebViewProgressView.h"

@interface ViewController ()<NJKWebViewProgressDelegate,UIWebViewDelegate>

@property (nonatomic , strong) UIWebView * webView;

@property (nonatomic , strong) NJKWebViewProgressView * progressView;

@property (nonatomic , strong) NJKWebViewProgress * progressPoxy;

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

//这一步很重要，必须先创建出来，否则你的进度条将不会动

_webView = [[UIWebView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height-100)];

_webView.center = self.view.center;

_progressPoxy = [[NJKWebViewProgress alloc]init];

_webView.delegate = _progressPoxy;

_progressPoxy.webViewProxyDelegate = self;

_progressPoxy.progressDelegate = self;

//示例网址

//http://58.96.180.232:80/ftl/html5/index/10.html?1451553857312

_progressView = [[NJKWebViewProgressView alloc]initWithFrame:CGRectMake(0, self.navigationController.navigationBar.frame.size.height-2, self.navigationController.navigationBar.frame.size.width, 2)];

_progressView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleTopMargin;

//初始化进度条进度

[_progressView setProgress:0 animated:YES];

[self loadWeb];

}

-(void)loadWeb{

NSURLRequest * request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://58.96.180.232:80/ftl/html5/index/10.html?1451553857312"] cachePolicy:NSURLRequestReloadIgnoringLocalAndRemoteCacheData timeoutInterval:5];

[_webView loadRequest:request];

[self.view addSubview:_webView];

}

#pragma mark - NJKWebViewProgressDelegate

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

{

[_progressView setProgress:progress animated:YES];

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

}

-(void)viewWillAppear:(BOOL)animated{

[super viewWillAppear:animated];

[self.navigationController.navigationBar addSubview:_progressView];