轉(zhuǎn)：http://blog.csdn.net/lvziru/article/details/7868454

http://justcoding.iteye.com/blog/1455674

UIWebView可以讓你創(chuàng)建一個(gè)網(wǎng)頁(yè)瀏覽器，類(lèi)似safari，而不是在程序中啟動(dòng)safsri哦。是不是覺(jué)得很棒呢？廢話(huà)少說(shuō)，切入正題。

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一、創(chuàng)建UIWebView

C代碼??

CGRect?bouds?=?[[UIScreen?mainScreen]applicationFrame];????

UIWebView*?webView?=?[[UIWebView?alloc]initWithFrame:bounds];????

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二、設(shè)置屬性

C代碼??

webView.scalespageToFit?=?YES;//自動(dòng)對(duì)頁(yè)面進(jìn)行縮放以適應(yīng)屏幕????

webView.detectsPhoneNumbers?=?YES;//自動(dòng)檢測(cè)網(wǎng)頁(yè)上的電話(huà)號(hào)碼，單擊可以撥打??

webView.autoresizesSubviews?=?NO;?//自動(dòng)調(diào)整大小??

webView.autoresizingMask=(UIViewAutoresizingFlexibleHeight?|?UIViewAutoresizingFlexibleWidth);??

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三、顯示網(wǎng)頁(yè)視圖UIWebView

C代碼??

[self.view?addSubview:webView];??

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四、加載內(nèi)容

C代碼??

NSURL*?url?=?[NSURL?URLWithString:@"http://www.youku.com"];//創(chuàng)建URL????

NSURLRequest*?request?=?[NSURLRequest?requestWithURL:url];//創(chuàng)建NSURLRequest????

[webView?loadRequest:request];//加載????

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?也可以加載一個(gè)本地資源:

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C代碼??

NSURL*?url?=?[NSURL???fileURLWithPath:filePath];//創(chuàng)建URL????

NSURLRequest*?request?=?[NSURLRequest?requestWithURL:url];//創(chuàng)建NSURLRequest????

[webView?loadRequest:request];//加載????

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UIWebView 還支持將一個(gè)NSString對(duì)象作為源來(lái)加載。你可以為其提供一個(gè)基礎(chǔ)URL，來(lái)指導(dǎo)UIWebView對(duì)象如何跟隨鏈接和加載遠(yuǎn)程資源：

C代碼??

[webView?loadHTMLString:myHTML?baseURL:[NSURL?URLWithString:@"http://baidu.com"]];???

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五、導(dǎo)航

UIWebView類(lèi)內(nèi)部會(huì)管理瀏覽器的導(dǎo)航動(dòng)作，通過(guò)goForward和goBack方法你可以控制前進(jìn)與后退動(dòng)作：

C代碼??

[webView?goBack];????

[webView?goForward];????

[webView?reload];//重載????

[webView?stopLoading];//取消載入內(nèi)容????

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六、UIWebViewDelegate委托代理

UIWebView支持一組委托方法，這些方法將在特定時(shí)間得到通知。要使用這些方法，必須先設(shè)定webView的委托：

C代碼??

webView.delegate?=?self;????

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七、三個(gè)方法

C代碼??

-?(void)loadRequest:(NSURLRequest?*)request;??

-?(void)loadHTMLString:(NSString?*)string?baseURL:(NSURL?*)baseURL;??

-?(void)loadData:(NSData?*)data?MIMEType:(NSString?*)MIMEType?textEncodingName:(NSString?*)textEncodingName?baseURL:(NSURL?*)baseURL;??

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其中baseURL 是指基準(zhǔn)的url 是一個(gè)絕對(duì)的地址，程序要用到的其他資源就可以根據(jù)這個(gè)基準(zhǔn)地址進(jìn)行查找而不用再次定位到絕對(duì)地址；

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下面每個(gè)委托方法的第一個(gè)參數(shù)都是指向一個(gè)UIwebview的指針，因此你可以將一個(gè)委托用于多個(gè)網(wǎng)頁(yè)視圖。

C代碼??

-(BOOL)webView:(UIWebView*)webView?shouldStartLoadWithRequest:(NSURLRequest*)?reuqest?navigationType:(UIWebViewNavigationType)navigationType;//當(dāng)網(wǎng)頁(yè)視圖被指示載入內(nèi)容而得到通知。應(yīng)當(dāng)返回YES，這樣會(huì)進(jìn)行加載。通過(guò)導(dǎo)航類(lèi)型參數(shù)可以得到請(qǐng)求發(fā)起的原因，可以是以下任意值：????

UIWebViewNavigationTypeLinkClicked????

UIWebViewNavigationTypeFormSubmitted????

UIWebViewNavigationTypeBackForward????

UIWebViewNavigationTypeReload????

UIWebViewNavigationTypeFormResubmitted????

UIWebViewNavigationTypeOther???

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C代碼??

-(void)webViewDidStartLoad:(UIWebView*)webView?;//當(dāng)網(wǎng)頁(yè)視圖已經(jīng)開(kāi)始加載一個(gè)請(qǐng)求后，得到通知。??

?? C代碼??

-(void)webViewDidFinishLoad:(UIWebView*)webView?;//當(dāng)網(wǎng)頁(yè)視圖結(jié)束加載一個(gè)請(qǐng)求之后，得到通知。??

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C代碼??

-(void)webView:(UIWebView*)webView??DidFailLoadWithError:(NSError*)error;//當(dāng)在請(qǐng)求加載中發(fā)生錯(cuò)誤時(shí)，得到通知。會(huì)提供一個(gè)NSSError對(duì)象，以標(biāo)識(shí)所發(fā)生錯(cuò)誤類(lèi)型。??

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來(lái)源：?http://blog.csdn.net/iukey/article/details/7299763

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實(shí)例：

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顯示圖片

C代碼??

CGRect?myImage?=?CGRectMake(10,?10,?140,?100);??????//定義坐標(biāo)和大小??

UIImageView?*myimageView?=?[[UIImageView?alloc]?initWithFrame:myImage];??//初始化UIImageView??

??

[myimageView?setImage:[UIImage?imageNamed:@"iphonewebsnsxiao.png"]];???//設(shè)置圖片??

myimageView.opaque?=?YES;???//不透明類(lèi)型??

??

[window?addSubview:myimageView];??//添加到window里??

[self.window?makeKeyAndVisible];??

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Web view

C代碼??

CGRect?webFrame?=?CGRectMake(0.0f,?0.0f,?320.0f,?460.0f);?????//定義坐標(biāo)和大小??

UIWebView?*webView?=?[[UIWebView?alloc]?initWithFrame:webFrame];//初始化UIWebView??

??

NSString?*urlAddress?=?@"http://www.baidu.com";???????//定義一個(gè)網(wǎng)址字符串??

NSURL?*url?=?[NSURL?URLWithString:urlAddress];?????//定義NSURL的值??

NSURLRequest?*requestObj?=?[NSURLRequest?requestWithURL:url];??//創(chuàng)建一個(gè)返回值??

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[webView?loadRequest:requestObj];?????//鏈接到URL??

[window?addSubview:webView];?????????//添加到window里??

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或者 （Empty Application?）

C代碼??

-?(BOOL)application:(UIApplication?*)application?didFinishLaunchingWithOptions:(NSDictionary?*)launchOptions??

{??

????self.window?=?[[UIWindow?alloc]?initWithFrame:[[UIScreen?mainScreen]?bounds]];??

????//?Override?point?for?customization?after?application?launch.??

??????

??????

????NSLog(@"loading");??

??????

????UIView?*contentView?=?[[UIView?alloc]?initWithFrame:[[UIScreen?mainScreen]?applicationFrame]];??

????contentView.backgroundColor?=?[UIColor?blueColor];??

??????

????NSLog(@"self?view");??

??????

????//?view?orientation?rotation??

????contentView.autoresizingMask?=?(UIViewAutoresizingFlexibleWidth?|?UIViewAutoresizingFlexibleHeight);??

??????

????//設(shè)置屬性??

??????

????//自動(dòng)調(diào)整視圖大小??

????contentView.autoresizesSubviews?=?NO;??

????[self.window?addSubview:contentView];??

??????

??????

????//創(chuàng)建一個(gè)層用來(lái)放webview????

????UIWebView?*aWebView?=?[[UIWebView?alloc]?initWithFrame:[[UIScreen?mainScreen]?applicationFrame]];??

??????

????//縮放??

????aWebView.scalesPageToFit?=?NO;??

??????

????//自動(dòng)調(diào)整大小??

????aWebView.autoresizesSubviews?=?NO;??

??????

????aWebView.autoresizingMask=(UIViewAutoresizingFlexibleHeight?|?UIViewAutoresizingFlexibleWidth);??

????//[aWebView?setDelegate:self];??

??????

????NSURL?*aURL?=?[NSURL?URLWithString:@"http://www.youtube.com"];??

????NSURLRequest?*aRequest?=?[NSURLRequest?requestWithURL:aURL];??

??????

????//發(fā)送請(qǐng)求??

????[aWebView?loadRequest:aRequest];??

??????

????//把webview添加到內(nèi)容視圖??

??????

????[contentView?addSubview:aWebView];??

??????

????[self.window?makeKeyAndVisible];??

??????

????aWebView?=?nil;??

????contentView?=?nil;??

????return?YES;????

}??

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UIWebView 加載網(wǎng)頁(yè)時(shí)使用程序中的背景(?解決加載頁(yè)面時(shí)一片空白問(wèn)題?)

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UIWebView加載網(wǎng)頁(yè)時(shí)默認(rèn)使用了網(wǎng)頁(yè)中的背景，而不能那使用程序中的主題背景，這讓人很不爽。下面給出我的解決辦法。

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首先我在網(wǎng)頁(yè)的css中加上了：

Html代碼??

body{??

background-color:transparent;??

}??

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然后直接看代碼：

C代碼??

UIWebView?*wv?=?[[UIWebView?alloc]initWithFrame:CGRectMake(0.0,0.0,320.0,460.0)];??

wv.backgroundColor?=?[UIColor?clearColor];//清除背景色??

wb.opaque?=?NO;//背景不透明設(shè)置為NO??

[self.view?addSubview:wv];??

self.view.backgroundColor?=?[UIColor??orangeColor];//其實(shí)這里我是為了設(shè)置為圖片背景，偷懶了，不寫(xiě)了。??

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或者

Java代碼??

-?(void)viewDidLoad??

{??

????[super?viewDidLoad];??

????//?Do?any?additional?setup?after?loading?the?view,?typically?from?a?nib.??

??????

????NSURL?*url?=?[NSURL?URLWithString:@"http://www.lebunnybleu.com/seoul/storelocation"];??

????NSURLRequest?*request?=?[NSURLRequest?requestWithURL:url];??

??????

????self.webview.backgroundColor?=?[UIColor?clearColor];??

????self.webview.opaque?=?NO;??

??????

????[self.webviewsetBackgroundColor:[UIColor?redColor]];??

//?[self.webView?setBackgroundColor:[UIColor?colorWithPatternImage:[UIImage?imageNamed:@"webmap320x640.png"]]];??

????[self.webviewloadRequest:request];??

}??

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UIWebView 加載本地html文件（demo.html）

Java代碼??

CGRect?bouds?=?CGRectMake(0,?halfHight,?viewBouds.size.width,?halfHight);??

UIWebView?*webview?=?[[UIWebView?alloc]?initWithFrame:bouds];??

??

webview.scalesPageToFit?=?YES;??

webview.autoresizesSubviews?=?YES;??

webview.autoresizingMask?=?(UIViewAutoresizingFlexibleHeight?|?UIViewAutoresizingFlexibleWidth);??

??

[webview?loadRequest:[NSURLRequest?requestWithURL:[NSURL?fileURLWithPath:[[NSBundle?mainBundle]?pathForResource:@"demo"?ofType:@"html"]?isDirectory:NO]]];??

??

[self.view?addSubview:webview];??

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載入html的方法

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1.

C代碼??

NSString?*resourcePath?=?[[NSBundle?mainBundle]?resourcePath];??

NSString?*filePath?=?[resourcePath?stringByAppendingPathComponent:@"webpage.html"];??

NSString?*htmlstring=[[NSString?alloc]?initWithContentsOfFile:filePath??encoding:NSUTF8StringEncoding?error:nil];??

[uiwebview?loadHTMLString:htmlstring?baseURL:[NSURL?fileURLWithPath:[[NSBundle?mainBundle]?bundlePath]]];??

或者

Java代碼??

NSString?*str?=?[NSString?stringWithFormat:@"<html><head><style>body{margin:0;padding:0}</style></head><body><iframe?marginwidth=0?marginheight=0?frameborder=0?scrolling='no'?src='http://tv.ibtimes.com'></iframe></body></html>"];??

[webview?loadHTMLString:str?baseURL:[NSURL?URLWithString:@"http://www.ibtimes.com"]];???

2.?

C代碼??

NSString?*webpage?=?[NSBundle?pathForResource:@"webpage"?ofType:@"html"?inDirectory:[[NSBundle?mainBundle]?bundlePath]];??

[uiwebview?loadRequest:[NSURLRequest?requestWithURL:[NSURL?fileURLWithPath:webpage]]];??

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3.

C代碼??

[uiwebview?loadRequest:[NSURLRequest?requestWithURL:[NSURL?URLWithString:@"http://qq.com"]]];??

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NSBundle的用法 ?

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NSBundle的對(duì)象可以獲取應(yīng)用程序安裝目錄的附件。附件包括了，當(dāng)前應(yīng)用程序下，所有的文件。（圖片、屬性列表等）

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獲取XML文件

C代碼??

NSString?*filePath?=?[[NSBundle?mainBundle]?pathForResouse:@"re"?ofType:@"xml"];??

NSData?*data?=?[[NSData?alloc]?initWithContentsOfFile:filePath];??

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獲取TXT文件

C代碼??

NSString?*filePath?=?[[NSBundle?mainBundle]?pathForResouse:@"myFile"?ofType:@"txt"];??

NSData?*data?=?[NSData?dataWithContentsOfFile:filePath];??

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獲取屬性列表

C代碼??

NSDictionary?*dict?=?[NSDictionary?dictionaryWithContentsOfFile:[[NSBundle?mainBundle]?pathForResource:@"ViewControllers"?ofType:@"plist"]];??

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默認(rèn)safari打開(kāi)鏈接地址

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.h

C代碼??

#import?<UIKit/UIKit.h>??

??

@interface?adFullScreen?:?UIViewController?<UIWebViewDelegate>??

{??

????IBOutlet?UIWebView?*webview;??

}??

??

@end??

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.m

Java代碼??

-?(void)?viewDidLoad??

{??

????NSString?*adHTML?=?@"<html><head><style>body{margin:0;padding:0}</style></head><body><iframe?width=1024?height=768?marginwidth=0?marginheight=0?frameborder=0?scrolling='no'?src='http://oascentral.ibtimes.com/RealMedia/ads/adstream_sx.ads/ipad.ibtimes/home@Position2'></iframe></body></html>";??

??

????[webview?loadHTMLString:adHTML?baseURL:[NSURL?URLWithString:@"http://justcoding.iteye.com"]];??

????webview.delegate?=?self;??

??

????adHTML?=?nil;??

}??

??

-(BOOL)?webView:(UIWebView?*)inWeb?shouldStartLoadWithRequest:(NSURLRequest?*)inRequest?navigationType:(UIWebViewNavigationType)inType?{??

????if?(?inType?==?UIWebViewNavigationTypeLinkClicked?)?{??

????????[[UIApplication?sharedApplication]?openURL:[inRequest?URL]];??

????????return?NO;??

????}??

????return?YES;??

}??

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如果不想設(shè)置點(diǎn)擊,而是打開(kāi)后直接跳轉(zhuǎn)一個(gè)網(wǎng)址，只要用以下代碼來(lái)代替

Java代碼??

-?(BOOL)webView:(UIWebView?*)webView??

????shouldStartLoadWithRequest:(NSURLRequest?*)request??

????navigationType:(UIWebViewNavigationType)navigationType??

{??

????if?([[[request?URL]?absoluteString]?isEqual:@"http://justcoding.iteye.com"])??

????????return?YES;??

??????

????[[UIApplication?sharedApplication]?openURL:[request?URL]];??

??????

????return?NO;??

}??

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他的其他方法和屬性是：

C代碼??

typedef?enum?{??

????UIWebViewNavigationTypeLinkClicked,??

????UIWebViewNavigationTypeFormSubmitted,??

????UIWebViewNavigationTypeBackForward,??

????UIWebViewNavigationTypeReload,??

????UIWebViewNavigationTypeFormResubmitted,??

????UIWebViewNavigationTypeOther??

}?UIWebViewNavigationType;??

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C代碼??

@protocol?UIWebViewDelegate?<NSObject>??

??

@optional??

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

-?(void)webViewDidStartLoad:(UIWebView?*)webView;??

-?(void)webViewDidFinishLoad:(UIWebView?*)webView;??

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

??

@end??

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其中黃色高亮的為清除UIWebView背景色的關(guān)鍵方法

轉(zhuǎn)載于:https://www.cnblogs.com/jackljf/archive/2012/09/21/3589016.html

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