Online Free Computer Tutorials.: iPhone

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Showing posts with label iPhone. Show all posts
Showing posts with label iPhone. Show all posts

Saturday, August 22, 2015

Reference from UITableViewCell to parent UITableView?

Store a weak reference to the tableView in the cell, which you'd set in -tableView:cellForRowAtIndexPath: of your table's dataSou...
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How to prioritize gesture recognizers and touches in a UIView

It sounds like you need: swipeUpTwoFinger.delaysTouchesBegan = YES;  I guess you came to this post by searching similar kind of issue...
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Swift : How to Rotate a UIImage 90 degrees?

In Swift and Objective-C , the easiest way (and thread safe too) is to do: //assume that the image is loaded in landscape mode from ...
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Swift : How to calculate a person's age from their birth date in NSDate format

In Swift , here is a class method extension to NSDate that calculates a person's age given their birthday in NSDate format: exten...
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How to filter NSArray in Swift?

Here is what you can do Swift version: let resultPredicate = NSPredicate(format: "name contains[c] %@", searchText) s...
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Monday, August 17, 2015

How to convert a decimal number to binary in Swift?

You can convert the decimal value to a human-readable binary representation using the String initializer that takes a radix parameter: ...
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Swift - Integer conversion to Hours/Minutes/Seconds

Define func secondsToHoursMinutesSeconds (seconds : Int) -> (Int, Int, Int) {   return (seconds / 3600, (seconds % 3600) / 60, (...
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Convert Int to String in Swift

Converting Int to String: let x : Int = 42 var myString = String(x) And the other way around - converting String to Int: let ...
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Does Swift support implicit conversion?

There is no implicitly cast in Swift. Easy way of conversion in swift is using constructor of particular type. Like if you want t...
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Swift - How to convert String to Double

You can simply bridge it like this: (swiftString as NSString).doubleValue I guess you came to this post by searching similar kin...
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Convert Float to Int in Swift

You can convert Float to Int in Swift language such like, var myIntValue:Int = Int(myFloatValue) println "My value is \(myIntV...
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What is the difference between -viewWillAppear: and -viewDidAppear:?

In general, this is what I do: 1) ViewDidLoad - Whenever I'm adding controls to a view that should appear together with the view,...
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Looking to understand the iOS UIViewController lifecycle

All these commands are called automatically at the appropriate times by iOS when you load/present/hide the view controller. It's im...
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How to set iPhone UI View z index?

UIView siblings are stacked in the order in which they are added to their superview. The UIView hierarchy methods and properties are ther...
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