Recent questions tagged Cocoa

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cocoa touch - Frosted Glass (iOS 7 Blur) Effect

I am trying to apply a frosted glass effect in a UIImageView. I tried to implement what I've found in this ... places. How can we reproduce it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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cocoa - Mac App Store Receipt Validation Code?

Wondering if anyone has a tutorial or working code for the new Mac App Store's receipt validation? About ... other good references out there? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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cocoa - Object allocate and init in Objective C

What is the difference between the following 2 ways to allocate and init an object? AController *tempAController ... then release immediately? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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cocoa - How to convert CFStringRef to NSString?

NSString *aNSString; CFStringRef aCFString; aCFString = CFStringCreateWithCString(NULL, [aNSString UTF8String], ... from aCFString? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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cocoa - How to add these object with name to the array by this order?

I have some object with name , just like button 1 , button 2 , button 11 ,button 111 , I want to add this ... .why ? Thank you for your answer! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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501 views

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cocoa - RestKit 2.0 : Mapping - second entitiy nil when not unique

I am trying to map an array of 'Comments' to a Comment entity that has a sub-entity 'testUser', the ... (with relationship t0)-> TestUser See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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cocoa - NSMutableData datawithBytesNoCopy:length:freeWhenDone: seems to make a copy of the buffer provided to it

According to Apple documentation, the class method +datawithBytesNoCopy:length:freeWhenDone: inherited from NSData Creates ... any ownership? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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cocoa touch - Animating Frame of UILabel smoothly

I've been trying to figure out a decent way to smoothly animate a frame size change on a UILabel, without a ... ? Thanks for any help, Scott See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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cocoa touch - Hit detection when drawing lines in iOS

I would like to allow the user to draw curves in such a way that no line can cross another line or even ... on how to accomplish this task? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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570 views

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cocoa - Ideal way to single-instance apps on the Mac

On Windows, it's common practice to create a named mutex and use the presence of that to determine that an instance ... would assume 2 or 3... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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531 views

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cocoa touch - Adding a UINavigationController as a subview of UIView

I'm trying to display a UILabel on top of a UINavigationController. The problem is that when I add the UILabel ... items of the navigation bar. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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693 views

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cocoa - Getting a unique ID for a window of another application

I'm a newbie Cocoa developer and I'm developing my first application. I want to read a unique identifier from ... , I'd be eternally grateful. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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461 views

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cocoa touch - How can I detect whether the iphone has been rebooted since last time app started

I'd like to detect from within my app whether the iPhone has been rebooted since last time my app was started ... ways to get this information? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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438 views

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cocoa - Why are alloc and init called separately in Objective-C?

Note: I'm relatively new to Objective-C and am coming from Java and PHP. Could someone explain to me why I ... the Objective-C way. Thank you! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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480 views

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cocoa - How do I add a third party Framework to iPhone project?

I am trying to use the PLDatabase framework in my iPhone app. I've added the framework to my Xcode project. ... on disk to be found. Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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512 views

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cocoa - NSURL Encoding in ObjC

How to do URL encoding in NSURL ? Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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427 views

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cocoa - Can i get a notification, when a new day begins?

In Cocoa, is there a notification i can register for, that informs me, when a new day begins - at 00h:00min:01s in the morning? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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446 views

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cocoa touch - UITableViewHeaderFooterView in InterfaceBuilder

I want to create a custom header section view in a separate .xib using IB However in IB i cannot find ... to use the initWitReuseIdentifier.... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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450 views

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cocoa touch - Pop-up modal with UITableView on iPhone

I need to pop up a quick dialog for the user to select one option in a UITableView from a list of roughly ... please straighten this out for me? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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526 views

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cocoa touch - iPhone send email not using MessageUI

HI, I am looking for help, I am new to cocoa and iphone programming Is there a way to send an email, ... hearing a replay from you Thanks... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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662 views

1 answer

cocoa touch - iPhone OS: Tap status bar to scroll to top doesn't work after remove/add back

Using this method to hide the status bar: [[UIApplication sharedApplication] setStatusBarHidden:YES animated:YES]; ... the respective view? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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567 views

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cocoa - Xcode ARC (automatic reference counting), "release is unavailable"

For my first time using Xcode I was following a tutorial online. I did everything as the tutorial showed me, but I ... may I fix the ARC issue? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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444 views

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cocoa touch - iOS: helpfulness of didReceiveMemoryWarning:

I'm at the part of my development process for tracking down crashing and memory leaks. As a strategy, ... even going forward with Instruments? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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400 views

1 answer

cocoa touch - Anyone know whether there is a 5-star rating component on iPhone?

In Google groups and some other web sites, there is a 5-star rating component which is pretty neat, such as ... has clue where to start? Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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418 views

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cocoa - Using an NSArrayController in Multiple Storyboard Scenes

I have a Mac document-based Core Data application that uses storyboards. The storyboard has the following layout: Window ... it and bind to it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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722 views

1 answer

cocoa - Subclassing NSWindowController in Swift and init(windowNibName)

I am trying to start a new document based Cocoa project in Swift and want to create a subclass of ... to send to that initializer? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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482 views

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cocoa - Xcode 6.1: file was built for x86_64 which is not the architecture being linked (i386)

I've created a Swift framework project for util/extensions that compiles and copies a .framework file to a ... projects, shouldn't it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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703 views

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cocoa touch - iOS: How to copy HTML into the cut-paste buffer?

I'm interested in letting my users copy the text they've entered into the cut-and-paste buffer, but I'd like to ... ? (I have no idea.) Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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