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URBAlertView

Overview

URBAlertView is a block-based alternative to the default UIAlertView available in UIKit that offers easier customization and a wider range of presentation and dismissal animations (fade, zoom, slide, flip, tumble).

Basic two-button layout example Basic two-button layout example with text field

Installation

To use URBAlertView in your own project, just import URBAlertView.h and URBAlertView.m files into your project, and then include "URBAlertView.h" where needed, or in your precompiled header.

The project uses ARC and targets iOS 5.0+.

Since this project has been updated to use some new API methods only available in iOS 7+, to avoid compiler warnings when building it's recommended to use in Xcode 5 and higher.

Usage Examples

The process of displaying an alert is very similar to that of UIKit's UIAlertView, except that you can use block for handling button events instead of the cumbersome delegate method. Just create an instance of URBAlertView, add some buttons and show (or show with a specific presentation style):

URBAlertView *alertView = [URBAlertView alloc] initWithTitle:@"Test Dialog" subtitle:@"This is just a test dialog"];
[alertView addButtonWithTitle:@"Close"];
[alertView addButtonWithTitle:@"OK"];
[alertView setHandlerBlock:^(NSInteger buttonIndex, URBAlertView *alertView) {
	[self.alertView hideWithCompletionBlock:^{
		NSLog(@"Alert view closed.");
	}];
}];
[self.alertView showWithAnimation:URBAlertAnimationFlipHorizontal];

By default, the dismissal animation will be in the same style as the presentation animation, unless you specifically use a different animation style when hiding:

[alertView hideWithAnimation:URBAlertAnimationTumble];

Customization

Many customization options are available for styles, such as colors, fonts radii and line widths, using the public properties on each instance. Alternatively, you can also use the available UIAppearance methods for applying these settings globally within your project. For customizating the buttons within URBAlertView, some styles can only be set using their respective UIAppearance methods, but I'm hoping to improve this in future updates.

Since the view is drawn completely in code, you can also have complete control over the look of your URBAlertView instances by modifying the code within drawRect: for both URBAlertView and URBAlertViewButton, both of which are found within the URBAlertView.m implementation.

TODO

  • Update to better resemble the init methods found in UIAlertView. (added 07/02/2013)
  • Support for defining event handling blocks for each button instead of a single block for all buttons.
  • UIAppearance conformance to allow for easier skinning and styling. (added 07/02/2013)
  • More customization properties for buttons.

License

This code is distributed under the terms and conditions of the MIT license.