IOS开发（19）之UIWebView控件

quasiceo 2014-04-11

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IOS开发（19）之UIWebView控件

2013-05-06 14:38:39 我来说两句作者：Developer_Man

我要投稿

1 前言
UIWebView控件可以正确的动态加载Web页面，我们可以通过UIWebView类行驶IOS上Safari的所有权限。

2 代码实例
自定义UIWebView内容：

ZYViewController.h：

[plain]
#import <UIKit/UIKit.h>

@interface ZYViewController : UIViewController

@property(nonatomic,strong) UIWebView *myWebView;

@end

#import <UIKit/UIKit.h>

@interface ZYViewController : UIViewController

@property(nonatomic,strong) UIWebView *myWebView;

@end
ZYViewController.m:

[plain]
@synthesize myWebView;

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    self.view.backgroundColor = [UIColor whiteColor];
    myWebView = [[UIWebView alloc] initWithFrame:self.view.bounds];//初始化UIWebView
    [self.view addSubview:myWebView];
    NSString *htmlString = @"IOS 5 Programming <strong>Cookbook</strong>";//设置UIWebView的内容
    [myWebView loadHTMLString:htmlString baseURL:nil];//加载内容
}

@synthesize myWebView;

- (void)viewDidLoad
{
    [super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
    self.view.backgroundColor = [UIColor whiteColor];
    myWebView = [[UIWebView alloc] initWithFrame:self.view.bounds];//初始化UIWebView
    [self.view addSubview:myWebView];
    NSString *htmlString = @"IOS 5 Programming <strong>Cookbook</strong>";//设置UIWebView的内容
    [myWebView loadHTMLString:htmlString baseURL:nil];//加载内容
}
运行结果：

加载已有的url内容：

ZYUIWebViewController.h:

[plain]
#import <UIKit/UIKit.h>

@interface ZYUIWebViewController : UIViewController<UIWebViewDelegate>

@property(nonatomic,strong) UIWebView *myWebView;

@end

#import <UIKit/UIKit.h>

@interface ZYUIWebViewController : UIViewController<UIWebViewDelegate>

@property(nonatomic,strong) UIWebView *myWebView;

@end
ZYUIWebViewController.m:

[plain]
- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.view.backgroundColor = [UIColor whiteColor];
    self.myWebView = [[UIWebView alloc] initWithFrame:self.view.bounds];
    self.myWebView.scalesPageToFit = YES;//页面适应手机大小
    [self.view addSubview:self.myWebView];
    NSURL *url = [NSURL URLWithString:@"http://www.csdn.net"];//初始化NSURL对象
    NSURLRequest *request = [NSURLRequest requestWithURL:url];//初始化NSURLRequest对象
    self.myWebView.delegate = self;//设置代理
    [self.myWebView loadRequest:request];//加载request对象
}
//开始加载Web页面的时候
-(void)webViewDidStartLoad:(UIWebView *)webView{
    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];//设置进度条开始
    NSLog(@"Loading webViewDidStartLoad method");
}
//结束记载的时候
-(void)webViewDidFinishLoad:(UIWebView *)webView{
    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];//设置进度条结束
    NSLog(@"Loading webViewDidFinishLoad method");
}
//加载失败的时候，如：网络异常
-(void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error{
    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
    NSLog(@"Loading webView method");
}

- (void)viewDidLoad
{
    [super viewDidLoad];
// Do any additional setup after loading the view.
    self.view.backgroundColor = [UIColor whiteColor];
    self.myWebView = [[UIWebView alloc] initWithFrame:self.view.bounds];
    self.myWebView.scalesPageToFit = YES;//页面适应手机大小
    [self.view addSubview:self.myWebView];
    NSURL *url = [NSURL URLWithString:@"http://www.csdn.net"];//初始化NSURL对象
    NSURLRequest *request = [NSURLRequest requestWithURL:url];//初始化NSURLRequest对象
    self.myWebView.delegate = self;//设置代理
    [self.myWebView loadRequest:request];//加载request对象
}
//开始加载Web页面的时候
-(void)webViewDidStartLoad:(UIWebView *)webView{
    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];//设置进度条开始
    NSLog(@"Loading webViewDidStartLoad method");
}
//结束记载的时候
-(void)webViewDidFinishLoad:(UIWebView *)webView{
    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];//设置进度条结束
    NSLog(@"Loading webViewDidFinishLoad method");
}
//加载失败的时候，如：网络异常
-(void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error{
    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
    NSLog(@"Loading webView method");
}
运行结果：