小编jdo*_*dog的帖子

我试图找到一种方法来防止或劫持didSelectRowAtIndexPath:.当用户在tableview中选择一行时,我想首先抛出一个警告视图,说"如果你这样做,将从CD中删除数据"."如果你继续,我们将把数据同步到服务器".

用户单击是继续.我希望防止在同步完成之前选择新单元格.如果同步失败,我想弹出警告告诉用户它失败然后停止didSelectRowAtIndexPath:发射,从而阻止他们触摸的新单元被选中.

如果同步成功,那么我想要didSelectRowAtIndexPath:被调用.

最好的方法是劫持willSelectRowAtIndexPath:？

我的JS中有一个关联数组,我想提供我的Select.

这些是可用的标准时间,可以刷新我的可用时间(页面加载时);

var standardhours = {
  "09" : '9AM',
  "10" : '10AM',
  "11" : '11AM',
  "12" : 'Noon',
  "13" : '1PM',
  "14" : '2PM',
  "15" : '3PM',
  "16" : '4PM',
  "17" : '5PM',
  "18" : '6PM',
  "19" : '7PM'
};

这些是我想要为我的Select提供的可用时间.

var availablehours = {
    "09" : '9AM',
    "10" : '10AM',
    "11" : '11AM',
    "12" : 'Noon',
    "13" : '1PM',
    "14" : '2PM',
    "15" : '3PM',
    "16" : '4PM',
    "17" : '5PM',
    "18" : '6PM',
    "19" : '7PM'
};

这是我的动态变量,它根据数据库更改而变化.这些是已经有人花费的时间. …

这真让我抓狂!我一直在崩溃这个错误.以下是我的代码.我试图在我的UITabelView中添加一个额外的单元格以获得"25个以上"的功能.但是我在heightForRowAtIndexPath函数内部崩溃了.我在俯瞰什么？

TIA.

[NSMutableArray objectAtIndex:]:索引4294967295超出边界[0 .. 8]'

0 CoreFoundation
0x01338be9 __exceptionPreprocess + 185 1 libobjc.A.dylib
0x0148d5c2 objc_exception_throw + 47 2 CoreFoundation
0x0132e6e5 - [__ NSArrayM objectAtIndex:] + 261 3
mackdabMobile
0x00004f56 - [AllmackTableViewController tableView:heightForRowAtIndexPath:] +

    - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath;
    {
        NSLog(@"IndexRow int: %i", indexPath.row);
        NSLog(@"postsArray count: %i", [postsArray count]);
        if(indexPath.row < [postsArray count]){  **<----Where it crashes**
            Post *myPost = [postsArray objectAtIndex:[indexPath row] - 1];
            NSString *text = myPost.description;

            CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 88.0f);

            CGSize size = …

我似乎无法将两个lat和LNG转换为字符串.当我转换为度数并回到一个字符串时,我得到像999737这样的大数字,应该是2英里或更少的距离.

好的有效!

sudo gem install mysql — –with-mysql-config=/usr/local/mysql/bin/mysql_config
/usr/local/lib/ruby/1.9.1/optparse.rb:1262: warning: regexp match /.../n against to UTF-8 string
/usr/local/lib/ruby/1.9.1/optparse.rb:1278: warning: regexp match /.../n against to UTF-8 string
/usr/local/lib/ruby/1.9.1/optparse.rb:1262: warning: regexp match /.../n against to UTF-8 string
/usr/local/lib/ruby/1.9.1/optparse.rb:1278: warning: regexp match /.../n against to UTF-8 string
Building native extensions.  This could take a while...
ERROR:  Error installing mysql:
    ERROR: Failed to build gem native extension.

/usr/local/bin/ruby extconf.rb
checking for mysql_ssl_set()... no
checking for rb_str_set_len()... no
checking for rb_thread_start_timer()... no
checking for mysql.h... yes
creating …

我有两个版本的ruby安装1.9和1.8.7(通过macports)如何让我的应用程序运行1.8.7？

我怎么能卸载1.9？

TIA

当尝试将CGPoint传递给方法时,点会被传递,但一旦在被调用的方法内,CGPoint值显示(inf,inf)？因此,将CGPoint位置传递给createShapeAt方法会导致代码无效.也许我没有正确实现某些内容,或者我是否需要在传递时复制CGPoint？

- (void)handleTap:(UITapGestureRecognizer *)recognizer {
if ([recognizer isKindOfClass:[UITapGestureRecognizer class]])
{
    NSLog(@"User just tapped!");
    CGPoint location = [recognizer locationInView:recognizer.view];
    float scale = [(BasicCanvasUIView *)recognizer.view scale];
    location = CGPointMake(location.x / scale, location.y / scale);
    [self createShapeAt:location];
}
}

- (void)createShapeAt:(CGPoint)point {
//Create a managed object to store the shape
----------------------------------------------------------------------------
<-- WHEN I GET HERE ON BREAKPOINT THE (point) VARIABLE SHOWS "(inf,inf)"  -->
----------------------------------------------------------------------------
NSManagedObject *shape = nil;

//Randomly choose a Circle or a Polygon
int type = arc4random() % 2;
if …

我如何检查是真还是假,因为这不是

 BOOL *isLoggedIn = [[NSUserDefaults standardUserDefaults] boolForKey:kSignedInBool];
BOOL *userSignedUp = [[NSUserDefaults standardUserDefaults] boolForKey:kHasUserEverSignedUpBool];

if(userSignedUp == NO || isLoggedIn == NO) { // they don't have an account so can't sign in.

    //Show the modal opening screen path

    [self performSegueWithIdentifier:@"showOpeningScreen" sender:self];

} else { //

    // We have signed up before so findNearbyamulanes
    [self performSelector:@selector(findNearByAmbulances) withObject:nil afterDelay:4.0];
}

更新:我有电子邮件形式作为ID,仍然有相同的问题.

我有一个表单,当我提交时,应弹出并显示一个颜色框,但代码打开颜色框,但在眨眼间,页面刷新？

这是我的代码:

            <html data-wf-page="546cd4ede4d" data-wf-site="5d0115c4ca7148">
        <head>
          <meta charset="utf-8">
          <title>Request Form</title>
          <meta content="Request a now." name="description">
          <meta content="Request Thingy" property="og:title">
          <meta content="Request a thingy now." property="og:description">
          <meta content="summary" name="twitter:card">
          <meta content="width=device-width, initial-scale=1" name="viewport">
          <meta content="Webflow" name="generator">
          <link href="css/normalize.css" rel="stylesheet" type="text/css">
          <link href="css/webflow.css" rel="stylesheet" type="text/css">
          <link href="css/sdfj.css" rel="stylesheet" type="text/css">
          <script src="https://ajax.googleapis.com/ajax/libs/webfont/1.4.7/webfont.js"></script>
          <script type="text/javascript">
            WebFont.load({
              google: {
                families: ["Ubuntu:300,300italic,400,400italic,500,500italic,700,700italic","Varela Round:400","PT Sans:400,400italic,700,700italic"]
              }
            });
          </script>
          <script src="js/modernizr.js" type="text/javascript"></script>
          <link href="images/favicon2.png" rel="shortcut icon" type="image/x-icon">
          <link href="images/myfav.png" rel="apple-touch-icon">

          <script type="text/javascript">
            var _gaq = _gaq || …

为什么我得到的getElementyById不是函数？

window.getElementById('notes').addEventListener('keydown', function (e) {
    // Allow: backspace, delete, tab, escape, enter and .
    if ($.inArray(e.keyCode, [46, 8, 9, 27, 13, 110, 190]) !== -1 ||
         // Allow: Ctrl+A
        (e.keyCode == 188 && e.shiftKey === true) ||
         // Allow: Ctrl+A
        (e.keyCode == 190 && e.shiftKey === true) ||
        // Allow: Ctrl+A
        (e.keyCode == 191 && e.shiftKey === true) ||
        // Allow: Ctrl+A
        (e.keyCode == 65 && e.ctrlKey === true) ||
         // Allow: Ctrl+C
        (e.keyCode == 67 && e.ctrlKey === true) …