您的位置：首页 > 移动开发

ios中webview的高级用法

2016-05-30 19:39 429 查看 
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];
}









#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




                                            

                                        

                        
                        内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理 点击这里给我发消息 
                    

                    

                    

                        

                         标签： 
                                                

                        

                    


                

            


            

                
相关文章推荐

                

                
            

        

        

            

            
            

                

                    
新的分享

                    

                        
                    

                

            


            

                

                    
章节导航