iOS UIWebview 分类 实现修改 javascript 两种提示框

#import <UIKit/UIKit.h>

@interface UIWebView (JavaScriptAlert)

- (void)webView:(UIWebView *)sender runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(CGRect *)frame;
-(BOOL)webView:(UIWebView *)sender runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(CGRect *)frame;
@end

#import "UIWebView.h"

@implementation UIWebView (JavaScriptAlert)

- (void)webView:(UIWebView *)sender runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(CGRect *)frame {
    
    
    UIAlertView* customAlert = [[UIAlertView alloc] initWithTitle:@"提示信息" message:message delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil];
    
    [customAlert show];
    
    //[customAlert autorelease];
}
static BOOL diagStat = NO;
static NSInteger bIdx = -1;
- (BOOL)webView:(UIWebView *)sender runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(CGRect *)frame {
    UIAlertView *confirmDiag = [[UIAlertView alloc] initWithTitle:@"提示"
                                                          message:message
                                                         delegate:self
                                                cancelButtonTitle:@"取消"
                                                otherButtonTitles:@"确定",nil];
    
    [confirmDiag show];
    bIdx = -1;
    while (bIdx==-1) {
        //[NSThread sleepForTimeInterval:0.2];
        [[NSRunLoop mainRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:0.1f]];
    }
    if (bIdx == 0){//取消;
        diagStat = NO;
    }
    else if (bIdx == 1) {//确定;
        diagStat = YES;
    }
    return diagStat;
}

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
    bIdx = buttonIndex;
}
@end