我喜欢将UILongPressGestureRecognizer与UIPanGestureRecognizer结合使用.
UIPanGestureRecognizer应该从长按开始.有一个简单的方法吗?还是我真的要写自己的手势识别器?
我不喜欢在主屏幕上.你按下一个图标,一段时间后图标开始摇晃.之后我没有从屏幕上松开手指,我可以开始拖动手指下的图标.
cocoa-touch objective-c uigesturerecognizer uipangesturerecognizer uilongpressgesturerecogni
我正在尝试构建自己的网格视图函数 - 扩展GridView.我唯一无法解决的是如何获得当前的滚动位置GridView.
getScrollY()总是返回0,并且onScrollListener参数只是一系列可见的子视图,而不是实际的滚动位置.
这似乎并不困难,但我在网上找不到解决方案.
这里有谁有想法?
在Objective-C,我调用该NSSetUncaughtExceptionHandler(&exceptionHandler)方法来记录异常.它如何在Swift中调用?
我正在编写一个使用CloudKit的小应用程序.出于某种原因,当有与查询匹配的新记录时,应用程序不会收到任何通知.有没有人能够使这个功能工作?
我在应用程序中创建了新记录,但也在CloudKit仪表板中创建了新记录.记录非常简单,只有一个整数字段.
创建记录:
CKRecord *record = [[CKRecord alloc] initWithRecordType:kSISCloudKitRecordTypeTest];
record[@"value"] = @1;
[self.publicDatabase saveRecord:record completionHandler:^(CKRecord *record, NSError *error)
{
// this call succeeds, no error.
}];
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注册通知:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[application registerForRemoteNotifications];
}
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创建订阅:
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"value = 1"];
CKSubscription *subscription = [[CKSubscription alloc]
initWithRecordType:kSISCloudKitRecordTypeTest
predicate:predicate
options:CKSubscriptionOptionsFiresOnRecordCreation];
CKNotificationInfo *notificationInfo = [CKNotificationInfo new];
notificationInfo.alertLocalizationKey = @"LOCAL_NOTIFICATION_KEY";
notificationInfo.soundName = @"Party.aiff";
notificationInfo.shouldBadge = YES;
subscription.notificationInfo = notificationInfo;
[self.publicDatabase saveSubscription:subscription
completionHandler:^(CKSubscription *subscription, NSError *error)
{
// this succeeds as …Run Code Online (Sandbox Code Playgroud) 我已经将UILabel添加到自定义单元格的contentView中.我遇到了一个奇怪的副作用.在右边界有一个灰色边缘.我不知道为什么.我刚刚添加了一个普通的UILabel,我什么都没做.
UILabel *label = [[UILabel alloc] initWithFrame:CGRectZero];
label.text = @"value1";
label.textAlignment = UITextAlignmentCenter;
[self.contentView addSubview:label];
- (void)layoutSubviews
{
UILabel *label = [self.contentView.subviews objectAtIndex:i];
label.frame = CGRectMake(…);
}
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我已将其添加ABPeoplePickerNavigationController到我的第一个视图控制器中.我希望当我选择一个联系人时显示要在其他视图控制器中显示的信息,但我正在尝试使用我的代码,这在我点击联系人时不会显示.这只会打开联系人到本机应用程序ABPeoplePickerNavigationController.
var people = ABPeoplePickerNavigationController()
var addressBook: ABAddressBookRef?
func extractABAddressBookRef(abRef: Unmanaged<ABAddressBookRef>!) -> ABAddressBookRef? {
if let ab = abRef {
self.view.addSubview(people.view)
return Unmanaged<NSObject>.fromOpaque(ab.toOpaque()).takeUnretainedValue()
}
return nil
}
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我试过这个功能
func peoplePickerNavigationController(peoplePicker: ABPeoplePickerNavigationController!,didSelectPerson person: ABRecordRef!) {
var unmanagedEmails = ABRecordCopyValue(people, kABPersonEmailProperty)
let emailObj: ABMultiValueRef = Unmanaged.fromOpaque(unmanagedEmails.toOpaque()).takeUnretainedValue() as NSObject as ABMultiValueRef
var index = 0 as CFIndex
var unmanagedEmail = ABMultiValueCopyValueAtIndex(emailObj, index)
var emailAddress:String = Unmanaged.fromOpaque(unmanagedEmail.toOpaque()).takeUnretainedValue() as NSObject as String
println(emailAddress)
}
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谢谢!
如何检查Swift中的网络状态?在Objective-C Reachability.h .m文件可用.现在怎么办?如何查看我是在线还是离线?
通常我需要提供3个信息,使用Apple APN:key, keyId, teamId就像这里一样.
我理解key(pem文件位置)teamId,但我在哪里可以找到keyId?这是在https://developer.apple.com的某个地方吗?这是捆绑ID吗?
我以编程方式修改了一个自动布局约束.它对某个视图生效,但与该视图的其他约束绑定的其他视图不会更改其位置.是否有" updateAllConstraints "方法?
ios ×4
swift ×3
addressbook ×1
android ×1
autolayout ×1
border ×1
cloudkit ×1
cocoa-touch ×1
css ×1
gridview ×1
html ×1
ios6 ×1
ios8 ×1
objective-c ×1
peoplepicker ×1
position ×1
scroll ×1
uilabel ×1
uitableview ×1