SVProgressHUD

SVProgressHUD is a clean and easy-to-use HUD meant to display the progress of an ongoing task.

Installation

From CocoaPods

CocoaPods is a dependency manager for Objective-C, which automates and simplifies the process of using 3rd-party libraries like SVProgressHUD in your projects. Simply add the following line to your Podfile:

pod 'SVProgressHUD'

If you want to use the latest features of SVProgressHUD add :head:

pod 'SVProgressHUD', :head

This pulls from the master branch directly. We are usually careful about what we push there and this is the version we use ourselves in all of our projects.

Carthage

You can install SVProgressHUD with Carthage.

Manually

Drag the SVProgressHUD/SVProgressHUD folder into your project.
Take care that SVProgressHUD.bundle is added to Targets->Build Phases->Copy Bundle Resources.
Add the QuartzCore framework to your project.

Usage

(see sample Xcode project in /Demo)

SVProgressHUD is created as a singleton (i.e. it doesn't need to be explicitly allocated and instantiated; you directly call [SVProgressHUD method]).

Use SVProgressHUD wisely! Only use it if you absolutely need to perform a task before taking the user forward. Bad use case examples: pull to refresh, infinite scrolling, sending message.

Using SVProgressHUD in your app will usually look as simple as this (using Grand Central Dispatch):

[SVProgressHUD show];
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
    // time-consuming task
    dispatch_async(dispatch_get_main_queue(), ^{
        [SVProgressHUD dismiss];
    });
});

Showing the HUD

You can show the status of indeterminate tasks using one of the following:

+ (void)show;
+ (void)showWithStatus:(NSString*)string;

If you'd like the HUD to reflect the progress of a task, use one of these:

+ (void)showProgress:(CGFloat)progress;
+ (void)showProgress:(CGFloat)progress status:(NSString*)status;

Dismissing the HUD

The HUD can be dismissed using:

+ (void)dismiss;
+ (void)dismissWithDelay:(NSTimeInterval)delay;

If you'd like to stack HUDs, you can balance out every show call using:

+ (void)popActivity;

The HUD will get dismissed once the popActivity calls will match the number of show calls.

Or show a confirmation glyph before before getting dismissed a little bit later. The display time depends on the length of the given string (between 0.5 and 5 seconds).

+ (void)showInfoWithStatus:(NSString *)string;
+ (void)showSuccessWithStatus:(NSString*)string;
+ (void)showErrorWithStatus:(NSString *)string;
+ (void)showImage:(UIImage*)image status:(NSString*)string;

Customization

SVProgressHUD can be customized via the following methods:

+ (void)setDefaultStyle:(SVProgressHUDStyle)style;                  // default is SVProgressHUDStyleLight
+ (void)setDefaultMaskType:(SVProgressHUDMaskType)maskType;         // default is SVProgressHUDMaskTypeNone
+ (void)setDefaultAnimationType:(SVProgressHUDAnimationType)type;   // default is SVProgressHUDAnimationTypeFlat
+ (void)setRingThickness:(CGFloat)width;                            // default is 2 pt
+ (void)setCornerRadius:(CGFloat)cornerRadius;                      // default is 14 pt
+ (void)setFont:(UIFont*)font;                                      // default is [UIFont preferredFontForTextStyle:UIFontTextStyleSubheadline]
+ (void)setForegroundColor:(UIColor*)color;                         // default is [UIColor blackColor], only used for SVProgressHUDStyleCustom
+ (void)setBackgroundColor:(UIColor*)color;                         // default is [UIColor whiteColor], only used for SVProgressHUDStyleCustom
+ (void)setInfoImage:(UIImage*)image;                               // default is the bundled info image provided by Freepik
+ (void)setSuccessImage:(UIImage*)image;                            // default is bundled success image from Freepik
+ (void)setErrorImage:(UIImage*)image;                              // default is bundled error image from Freepik
+ (void)setViewForExtension:(UIView*)view;                          // default is nil, only used if #define SV_APP_EXTENSIONS is set

Additionally SVProgressHUD supports the UIAppearance protocol.

Hint

As standard SVProgressHUD offers two preconfigured styles:

SVProgressHUDStyleLight: White background with black spinner and text
SVProgressHUDStyleDark: Black background with white spinner and text

If you want to use custom colors with setForegroundColor and setBackgroundColor: don't forget to set SVProgressHUDStyleCustom via setDefaultStyle:.

Notifications

SVProgressHUD posts four notifications via NSNotificationCenter in response to being shown/dismissed:

SVProgressHUDWillAppearNotification when the show animation starts
SVProgressHUDDidAppearNotification when the show animation completes
SVProgressHUDWillDisappearNotification when the dismiss animation starts
SVProgressHUDDidDisappearNotification when the dismiss animation completes

Each notification passes a userInfo dictionary holding the HUD's status string (if any), retrievable via SVProgressHUDStatusUserInfoKey.

SVProgressHUD also posts SVProgressHUDDidReceiveTouchEventNotification when users touch on the overall screen or SVProgressHUDDidTouchDownInsideNotification when a user touches on the HUD directly. For this notifications userInfo is not passed but the object parameter contains the UIEvent that related to the touch.

App Extensions

When using SVProgressHUD in an App Extension, #define SV_APP_EXTENSIONS to avoid using unavailable APIs. Additionally call setViewForExtension: from your extensions view controller with self.view.

Contributing to this project

If you have feature requests or bug reports, feel free to help out by sending pull requests or by creating new issues. Please take a moment to review the guidelines written by Nicolas Gallagher:

Credits

SVProgressHUD is brought to you by Sam Vermette and contributors to the project. If you're using SVProgressHUD in your project, attribution would be very appreciated. The success, error and info icons are made by Freepik from Flaticon and are licensed under Creative Commons BY 3.0.

davidolesch/SVProgressHUD