ios中webview的高级用法

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];
}