贴代码:
@interface UIWebView (JavaScriptAlert)
-(void) webView:(UIWebView *)sender runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(id)frame;
- (BOOL)webView:(UIWebView *)sender runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(id)frame;
@end @implementation UIWebView (JavaScriptAlert) - (void)webView:(UIWebView *)sender runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(id)frame {
UIAlertView* customAlert = [[UIAlertView alloc] initWithTitle:@"助手提示" message:message delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil];
[customAlert show];
}
static BOOL diagStat = NO;
static NSInteger bIdx = -;
- (BOOL)webView:(UIWebView *)sender runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(id)frame {
UIAlertView *confirmDiag = [[UIAlertView alloc] initWithTitle:@"助手提示"
message:message
delegate:self
cancelButtonTitle:@"取消"
otherButtonTitles:@"确定", nil nil]; [confirmDiag show];
bIdx = -; while (bIdx==-) {
//[NSThread sleepForTimeInterval:0.2];
[[NSRunLoop mainRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:0.1f]];
}
if (bIdx == ){//取消;
diagStat = NO;
}
else if (bIdx == ) {//确定;
diagStat = YES;
}
return diagStat;
} - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
bIdx = buttonIndex;
} @end
关于WKWebView:
之前用WebView装载一个网页时,弹出Alert时会显示网址,由于不想把网址暴露给用户这样显示就不是很友好了。UIWebView文档内没有找到可以捕获这类信息的API。GOOGLE了下发现了WKWebView组件,WKWebView是IOS8新推出的组件,目的是给出一个新的高性能的 Web View 解决方案,摆脱过去 UIWebView 的老旧笨重特别是内存占用量巨大的问题。以下为示例代码:
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// // ViewController.swift // KenWKWebView // // Created by KenNgai on 10/10/15. // Copyright © 2015 IT. All rights reserved. // import UIKit
import WebKit //导入WebKit WKWebView应该是用Webkit内核
class ViewController : UIViewController , WKNavigationDelegate , WKUIDelegate {
var wkBrowser : WKWebView !
override func viewDidLoad () {
super . viewDidLoad ()
self . wkBrowser = WKWebView ( frame : self . view . frame )
//self.wkBrowser.loadRequest(NSURLRequest(URL: NSURL(string: "http://www.baidu.com")!))
let html = "<html><title>Dialog</title><style type='text/css'>body{font-size:60px}</style><script type='text/javascript'>function myconfirm(){if(confirm('Star it?')){alert('Done')}}</script><body><a href=\"javascript:alert('Just Alert')\" >Alert</a><br /><a href=\"javascript:myconfirm()\">Logout</a></body></html>"
self . wkBrowser . loadHTMLString ( html , baseURL : nil )
self . wkBrowser . navigationDelegate = self
self . wkBrowser . UIDelegate = self
self . view . addSubview ( wkBrowser )
}
override func didReceiveMemoryWarning () {
super . didReceiveMemoryWarning ()
// Dispose of any resources that can be recreated.
}
} //捕捉异常信息 private typealias wkNavigationDelegate = ViewController
extension wkNavigationDelegate {
func webView ( webView : WKWebView , didFailNavigation navigation : WKNavigation !, withError error : NSError ) {
NSLog ( error . debugDescription )
}
func webView ( webView : WKWebView , didFailProvisionalNavigation navigation : WKNavigation !, withError error : NSError ) {
NSLog ( error . debugDescription )
}
} private typealias wkUIDelegate = ViewController
extension wkUIDelegate {
//HTML页面Alert出内容
func webView ( webView : WKWebView , runJavaScriptAlertPanelWithMessage message : String , initiatedByFrame frame : WKFrameInfo , completionHandler : () - > Void ) {
let ac = UIAlertController ( title : webView . title , message : message , preferredStyle : UIAlertControllerStyle . Alert )
ac . addAction ( UIAlertAction ( title : "Ok" , style : UIAlertActionStyle . Cancel , handler : { ( a ) - > Void in
completionHandler ()
}))
self . presentViewController ( ac , animated : true , completion : nil )
}
//HTML页面弹出Confirm时调用此方法
func webView ( webView : WKWebView , runJavaScriptConfirmPanelWithMessage message : String , initiatedByFrame frame : WKFrameInfo , completionHandler : ( Bool ) - > Void ) {
let ac = UIAlertController ( title : webView . title , message : message , preferredStyle : UIAlertControllerStyle . Alert )
ac . addAction ( UIAlertAction ( title : "Ok" , style : UIAlertActionStyle . Default , handler :
{ ( ac ) - > Void in
completionHandler ( true ) //按确定的时候传true
}))
ac . addAction ( UIAlertAction ( title : "Cancel" , style : UIAlertActionStyle . Cancel , handler :
{ ( ac ) - > Void in
completionHandler ( false ) //取消传false
}))
self . presentViewController ( ac , animated : true , completion : nil )
}
} |
如果你访问的页面的协议是https那么要在info.list同添加以下Key:
<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
</dict>
具体可参考:https://lvwenhan.com/ios/460.html
链接: