UIWebview的高级用法

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1.隐藏上下滚动时出边界的后面的黑色的阴影- (void) hideGradientBackground:(UIView*)theView{  for (UIView * subview in theView.subviews)  {    if ([subview isKindOfClass:[UIImageView class]])      subview.hidden = YES;    [self hideGradientBackground:subview];  }}2. 禁用拖拽时的反弹效果[(UIScrollView *)[[webView subviews] objectAtIndex:0] setBounces:NO];  3. 判断用户点击类型- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{    switch (navigationType)     {        //点击连接        case UIWebViewNavigationTypeLinkClicked:        {            NSLog(@"clicked");        }            break;        //提交表单        case UIWebViewNavigationTypeFormSubmitted:        {            NSLog(@"submitted");        }        default:            break;    }    return YES;}

#import "BaseViewController.h"@interface BaseViewController (){    UIWebView *webview;}@end@implementation BaseViewController#pragma  mark -life cicry- (void)viewDidLoad{    [super viewDidLoad];    webview=[[UIWebView alloc] initWithFrame:self.view.bounds];    webview.delegate=self;//因为这个代理设置的self    [self.view addSubview:webview];    [webview loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:self.requestUrl]]];        [webview release];    UIScrollView *scollview=(UIScrollView *)[[webview subviews]objectAtIndex:0];    scollview.bounces=NO;        // Do any additional setup after loading the view.}- (void)didReceiveMemoryWarning{    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}-(void)viewDidUnload{    [super viewDidUnload];    self.requestUrl=nil;}- (void)dealloc{    [_requestUrl release];    [super dealloc];}

框架：

webview与js的通信框架

#import "MJViewController.h"#import "MBProgressHUD+Add.h"@interface MJViewController ()@end@implementation MJViewController- (void)viewDidLoad{    [super viewDidLoad];        [self loadRemoteHTML];}#pragma mark 加载远程的HTML页面- (void)loadRemoteHTML {    NSURL *url = [NSURL URLWithString:@"http://192.168.1.106:8080/MJServer/"];        self.webView.delegate = self;    [self.webView loadRequest:[NSURLRequest requestWithURL:url]];}#pragma mark 加载其他文件- (void)loadRemoteTxt {    NSURL *url = [NSURL URLWithString:@"http://192.168.1.106:8080/MJServer/abc.txt"];        self.webView.delegate = self;    [self.webView loadRequest:[NSURLRequest requestWithURL:url]];}#pragma mark 加载PDF文件- (void)loadLocalPDF {    //[self.webView loadData:<#(NSData *)#> MIMEType:<#(NSString *)#> textEncodingName:<#(NSString *)#> baseURL:<#(NSURL *)#>];        NSURL *url = [NSURL fileURLWithPath:@"/Users/apple/Desktop/第10章-网络.pdf"];        self.webView.delegate = self;    [self.webView loadRequest:[NSURLRequest requestWithURL:url]];}#pragma mark 加载HTML字符串- (void)loadHTMLString {    NSURL *url = [NSURL fileURLWithPath:@"/Users/apple/Pictures"];    [self.webView loadHTMLString:@"<html><body><img src='lufy.png'></body></html>" baseURL:url];}#pragma mark - webview代理方法- (void)webViewDidStartLoad:(UIWebView *)webView {    NSLog(@"开始加载页面");    [MBProgressHUD showMessag:@"哥正在帮你加载..." toView:self.view];}- (void)webViewDidFinishLoad:(UIWebView *)webView {    NSLog(@"页面加载完毕");    [MBProgressHUD hideHUDForView:self.view animated:YES];        self.backItem.enabled = self.webView.canGoBack;    self.forawrdItem.enabled = self.webView.canGoForward;        self.titleItem.title = [self.webView stringByEvaluatingJavaScriptFromString:@"document.title"];        //[self.webView stringByEvaluatingJavaScriptFromString:@"fn();"];}#pragma mark webview每次加载之前都会调用这个方法// 如果返回NO，代表不允许加载这个请求- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {    // 说明协议头是ios    if ([@"ios" isEqualToString:request.URL.scheme]) {        NSString *url = request.URL.absoluteString;        NSRange range = [url rangeOfString:@":"];        NSString *method = [request.URL.absoluteString substringFromIndex:range.location + 1];                SEL selector = NSSelectorFromString(method);                if ([self respondsToSelector:selector]) {            [self performSelector:selector];        }                return NO;    }        return YES;}#pragma mark - 提供一个接口方法给JS调用- (void)openCamera {    NSLog(@"打开了照相机");}- (void)call {    NSLog(@"打电话");}#pragma mark - 按钮方法#pragma mark 前进- (void)forawrd {    [self.webView goForward];}#pragma mark 后退- (void)back {    [self.webView goBack];}@end

服务端的用法

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