最近公司在开发web型的app，涉及许多交互，刚好，我遇到js中 的Alter/Confirm/Prompt三个弹框提示函数的坑，今天记录解决的办法下来，供大家使用。

1、在开发过程中，前端使用了他们自己的弹框框架，结果在iOS和Android端展示这样子，多了http。

77F9F95B-E8C0-4A10-A931-964055A4E9BD.png

2、为了解决这样的问题，百度了许多，最终借助百度上的资料和官方文档，试验成功了。
3、其实不难解决这个问题，新建个UIWebView类别，在m文件写上如下代码，即可。

• (void)webView:(UIWebView *)sender runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(CGRect *)frame {

UIAlertView* customAlert = [[UIAlertView alloc] initWithTitle:@"温馨提示" message:message delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil];

[customAlert show];

}
static BOOL diagStat = NO;

static NSInteger bIdx = -1;

• (BOOL)webView:(UIWebView *)sender runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(id)frame{

  diagStat = NO;

  bIdx = -1;

  UIAlertView *confirmDiag = [[UIAlertView alloc] initWithTitle:@"温馨提示"
  message:message
  delegate:self
  cancelButtonTitle:@"取消"
  otherButtonTitles:@"确定", nil];

  [confirmDiag show];

  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;
  }

• (NSString *) webView:(UIWebView *)view runJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(NSString *)text initiatedByFrame:(id)frame{

  diagStat = NO;

  bIdx = -1;
  UIAlertView *confirmDiag = [[UIAlertView alloc] initWithTitle:@"温馨提示" message:prompt
  delegate:self
  cancelButtonTitle:@"取消"
  otherButtonTitles:@"确定", nil];

[confirmDiag setAlertViewStyle:UIAlertViewStylePlainTextInput];

UITextField *textField = [confirmDiag textFieldAtIndex:0];
textField.placeholder = @"请输入信息";
textField.keyboardType = UIKeyboardTypeDefault;


[confirmDiag show];

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 textField.text;

效果如下：

7616FF80-91D4-498B-B439-DB7660AE8DED.png

}