ios - How to set a boolean type property in objective C class - Stack Overflow


ios boolean property

Dec 31,  · Of BOOL and YES It may not be immediately clear that the Objective C BOOL "type" is not actually a boolean type at all. This is a legacy from the original C language, which does not have an intrinsic boolean type (the iPhone GCC C compiler supports the . GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Jun 04,  · CoreSpotlightContinuation (Boolean - iOS) To declare that your app supports Spotlight query continuation, add this key to your app’s file with a value of YES. When continuing a query from Spotlight, the system calls the following two app delegate methods in sequence.

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The iOS frameworks provide the infrastructure you need for creating iOS apps, ios boolean property. You use the keys associated with this framework to configure the appearance of your app at launch time and the behavior of your app once it is running.

UIKit keys use the prefix UI to distinguish them from other keys. Other frameworks also use appropriate prefixes. Several Info. Table 1 contains an alphabetical listing of iOS keys, the corresponding name for that key in the Xcode property list editor, a high-level description of each key, and the platforms on which you use it.

Detailed information about each key is available in later sections. Specifies whether the app supports Spotlight query continuation. See CoreSpotlightContinuation for details. Specifies alternative names by which ios boolean property can refer to the app in Siri. Specifies the types of directions the app can deliver. Specifies a list of app-specific fonts. See UIAppFonts for details. Specifies whether the app terminates instead of run in the background. Specifies the static Home screen quick actions for the app, ios boolean property.

Specifies the bundle ID of the widget to be ios boolean property as a Home screen quick action, for apps that have more than one widget. Specifies that the app needs to continue running in the background.

See UIBackgroundModes for details, ios boolean property. Inserted automatically by Xcode to define the target device of the app. See UIDeviceFamily for details. See UIInterfaceOrientation for details. Specifies the launch images to use for the app. See UILaunchImages for details. Specifies the storyboard from which to generate a launch image to use for the app. Specifies information about multiple storyboards from which to generate launch images for an app.

See UILaunchStoryboards for details. Specifies whether the app presents its content in Newsstand. See UINewsstandApp for details. See UIPrerenderedIcon ios boolean property details. Specifies ios boolean property device-related features required for the app to run. Specifies whether this app requires a Wi-Fi connection. Specifies whether the status bar is initially hidden when the app launches.

Specifies the style of the status bar as the app launches. Specifies the communications protocols supported for communication with attached hardware accessories. Specifies the interface orientations that the app supports. Specifies that the app is a document-based app. Specifies the preferred user interface appearance—light or dark—for a tvOS app. Specifies whether the view controller determines the status bar style. Specifies whether Core Animation ios boolean property use antialiasing when drawing does not align to pixel boundaries.

Specifies whether Core Animation layers inherit the opacity of their superlayer. When continuing a query from Spotlight, the system calls the following two app delegate methods in sequence:. Next, the system calls the application:continueUserActivity:restorationHandler: method, ios boolean property an NSUserActivity object to the userActivity parameter. The userInfo dictionary of the NSUserActivity object has a key-value pair in which the key is a CSSearchQueryString constant and the value is the string the ios boolean property should use when performing its query.

Use this key to specify common synonyms by which users refer to your app. The value of this key is an array of no more than three dictionaries, each of which contains contains the following keys:, ios boolean property.

Required Specifies the alternative name by which users may refer to the app in Siri. The value of this key can be localized. Siri recognizes alternative app names only for apps that include an Intents app extension with support for one or more intents. Apps must not use this key to divert Siri requests from other apps on the system. It is a programmer error to include more than three entries per localized version of your Info. The array contains one or more strings, each of which indicates a supported mode.

Apps may include the following strings in this array:. For more information about specifying this file, see Location and Maps Programming Guide. The system loads the specified fonts and makes them available for use by the app when that app is run. When the value of this key is YESthe app is terminated and purged from memory instead of moved to the background.

If this key is not present, or is set to NOthe app moves to the background as usual. This key contains an array of dictionaries. Each dictionary contains detailed information ios boolean property a single quick action and how it is used. You can specify static quick actions for your app as an array of dictionaries.

The number of quick actions shown for your app on the Home screen, when the user presses your Home screen icon on a device that supports 3D Touch, is determined by the system. The static quick actions you define in your Info. The system populates the set of Home screen quick actions first with your static quick actions, and only if there are additional slots available does it also show your defined dynamic quick actions.

For more information on dynamic quick actions, see Adopting 3D Touch on iPhone. The following screenshot shows an example definition of two static quick actions in the Xcode property list editor:. The following code listing shows the example definition as they appear ios boolean property the corresponding property list file:. When a user chooses one of your Home screen quick actions, the system launches or resumes your app and UIKit calls the application:performActionForShortcutItem:completionHandler: method in your app delegate.

Be sure to read the description of that method in UIApplicationDelegate Protocol Reference for information on how to ensure the method is called only when it should be.

The attributes of the received quick action are available in the object properties. Table 2 lists the keys that can be included in each dictionary of the array. A required string delivered to your app when the user invokes the corresponding ios boolean property action. Your app can use this string to classify quick actions into types, and then to disambiguate among action types it receives. If the title fits on one line, the system displays it as a single line quick action item.

If the title is too long for one line and you have not specified a UIApplicationShortcutItemSubtitle string, the system displays the title on two lines. For guidance on how to do this, read Localizing Property List Values, ios boolean property.

An optional string that is displayed to the user on the Home screen, immediately below the corresponding title string. If you specify a subtitle ios boolean property a quick action, the system displays the quick action title on a single line perhaps just a portion of the title, followed by ellipsis characterno matter how long the title is. The icon is displayed in the set of quick actions for your app, along with the quick action's title, on the Home screen, ios boolean property.

The icon is displayed before quick action title on the Home screen. Icons should be square, single color, ios boolean property, and 35x35 points, as shown in these template files and as described in iOS Human Interface Guidelines. An optional, app-defined dictionary, ios boolean property. Home screen quick actions, in iOS If you provide more than ios boolean property widget with your app, employ this key to identify which widget should be available on the Home screen.

Apps should only opt out when absolutely necessary. These keys should be used sparingly and only by apps providing the indicated services. Where alternatives for running in the background exist, those alternatives should be used instead. For ios boolean property, apps can use the signifiant location change interface to receive location events instead of registering as a background location app.

Table 3 lists the possible string values that you can put into the array associated with this key. You ios boolean property include any or all of these strings but your app must provide the indicated services.

For watchOS 3, including this key allows a workout app, with an active HKWorkoutSession ios boolean property, to provide audio playback while the app runs in the background.

In watchOS 4 and later, you no longer need the key to play audio in the background. Instead, your app can play audio as long as it has an active workout or location session, ios boolean property. Additionally, all watchOS 4 apps can record audio in the background. You must start recording in the foreground, but recording continues when the app transitions to the background.

The app provides location-based information to the user and requires the use of the standard location services as opposed to the significant change location service to implement this feature, ios boolean property. Ios boolean property app provides Voice-over-IP services. Apps with this key are automatically launched after system boot so that the app can reestablish VoIP services.

Apps with this key are also allowed to play background audio. The app requires new ios boolean property from the network on a regular basis. When it is convenient to do so, ios boolean property, the system launches or resumes the app in the background and gives it a small amount of time to download any new content.




ios boolean property


Jun 04,  · CoreSpotlightContinuation (Boolean - iOS) To declare that your app supports Spotlight query continuation, add this key to your app’s file with a value of YES. When continuing a query from Spotlight, the system calls the following two app delegate methods in sequence. bool is a proper boolean type that is logically 1 bit wide. In C, any number of integer type that is not 0 is meant to evaluate to true. However casting any non zero integer whose lower 8 bits happen to be zero to BOOL will result in a BOOL variable that is false. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.