大约有 2,193 项符合查询结果（耗时：0.0102秒） [XML]
UILongPressGestureRecognizer gets called twice when pressing down
...
UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc]
initWithTarget:self
action:@selector(handleLongPress:)];
longPress.minimumPressDuration = 1.0;
[myView addGestureRecognizer:lon...
What exception classes are in the standard C++ library
...;exception> interface (debatable if you should catch this)
std::bad_alloc <new> failure to allocate storage
std::bad_array_new_length <new> invalid array length
std::bad_cast <typeinfo> execution of an invalid dynamic-cast
std::bad_exception <exception>...
Always pass weak reference of self into block in ARC?
... be the cause of these blocks retaining self and keeping it from being dealloced ? The question is, should I always use a weak reference of self in a block ?
...
Total number of items defined in an enum
...h the Enum.GetValues and Enum.GetNames as listed above seem like they risk allocating a whole new array just to get a fixed length, which seems... well, horrible. Does anyone know if this approach does indeed incur dynamic allocation? If so, for certain use cases it seems far and away the most perfo...
How to make completely transparent navigation bar in iOS 7
...or];
[self.navigationController.navigationBar setBackgroundImage:[[UIImage alloc] init] forBarMetrics:UIBarMetricsDefault];
self.navigationController.navigationBar.shadowImage = [[UIImage alloc] init];
self.navigationController.navigationBar.backgroundColor = [UIColor clearColor];
...
How to Get True Size of MySQL Database?
...ld the table from scratch. When databases store information on disks, they allocate it in blocks; deleting a record often frees a block between used blocks, and it's very expensive to shift all of the other blocks around to use that space up so it is marked as "free". The space may be used later by ...
iOS app error - Can't add self as subview
...^(MyUser *user) {
ProfileViewController *pvc = [[ProfileViewController alloc] initWithUser:user];
[_dataViewController.navigationController pushViewController:pvc animated:YES navigationLock:lock];
}];
Basically, the rule is: before any non user related delays grab a lock from the relevant...
receiver type *** for instance message is a forward declaration
...of other stuff wrong with your code.
You're -init'ing an object without +alloc'ing it. That won't work
You're declaring an object as a non-pointer type, that won't work either
You're not calling [super init] in -init.
You've declared the class using @class in the header, but never imported the cla...
Text inset for UITextField?
...t a left margin, you can try this:
UItextField *textField = [[UITextField alloc] initWithFrame:...];
UIView *leftView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 10, textField.frame.size.height)];
leftView.backgroundColor = textField.backgroundColor;
textField.leftView = leftView;
textField.le...
iOS - Calling App Delegate method from ViewController
... AppDelegate didFinishLaunchingWithOptions...
self.m_window = [[[UIWindow alloc]initWithFrame:[[UIScreen mainScreen]bounds] autorelease];
self.m_navigationController = [[[UINavigationController alloc]initWithRootViewController:homeViewController]autorelease];
[m_window addSubview:self.m_navigationC...