給UIWebView增加搜索欄

在xib文件中拖入UIWebView。

使用代碼為UIWebView的滾動控件增加搜索欄：

UISearchBar* searchBar=[[[UISearchBar alloc]initWithFrame:CGRectMake(0, -44, 320, 44)]autorelease];

[self.browser.scrollView addSubview:searchBar];

self.topBar=searchBar;

[[self.browser scrollView] setContentInset:UIEdgeInsetsMake(44, 0, 0, 0)];

self.browser.scrollView.scrollIndicatorInsets=UIEdgeInsetsMake(44, 0, 0, 0);

[self.browser.scrollView setContentOffset:CGPointMake(0, -44)];//webview加載后會默認給滾動條設置滾動位置為0，0。

self.browser.scrollView.delegate=self;//給滾動條加代理來調整滾動條指示控件的位置

- (void)scrollViewDidScroll:(UIScrollView *)scrollView{

float y=scrollView.contentOffset.y;

if (y>0) {//topbar不可見

scrollView.scrollIndicatorInsets=UIEdgeInsetsMake(0, 0, 0, 0);

}else{//topbar可見

scrollView.scrollIndicatorInsets=UIEdgeInsetsMake(-y, 0, 0, 0);

}

}

//刪除UIWebView的陰影效果

UIView* lastView = [[[[self.browser subviews] objectAtIndex:0] subviews] lastObject];

for(UIView *wview in [[[self.browser subviews] objectAtIndex:0] subviews]) {?

if([wview isKindOfClass:[UIImageView class]]) {?

if (wview!=lastView) {//this is scroll indicator

wview.hidden = YES;?

}

}

}?

轉http://qiufangzhou.blog.163.com/blog/static/506421802012347019554/?

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UIWebView的Scroll事件的監測

http://three20.pypt.lt/uiwebview-tap-scroll-detection?

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