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EMCCountryPickerController v. 1.1.0
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@emcrisostomo emcrisostomo released this 25 May 11:57
· 56 commits to master since this release
1.1.0
cb300bb

What's New in 1.1.0

EMCCountryPickerController v. 1.1.0 adds the following features:

  • A border is drawn around the flag.
  • The flag border can be optionally disabled.
  • Both the color and the width of the flag border can be customised.

EMCCountryPickerController

EMCCountryPickerController is a view controller that allow users to choose
a country from a searchable list. The available countries are taken from the
ISO 3166-1 standard, whose ISO 3166-1 alpha-2 two-letter
country codes are used internally by the controller implementation.

Features

The anatomy of the view presented by EMCCountryPickerController is the
following:

  • A search bar is anchored to the bottom of the top layout guide.
  • A table view is anchored to the bottom of the search bar and to the top of
    the bottom layout guide.
  • The view is a full screen view designed to be presented modally.

The table view presents the list of countries, sorted by name, in the current
language of the user, if available, or in English. A public domain image of
a country's flag is shown at the left of the country name.

Main view with flags

Prerequisites

This library has been built with XCode 5.1.1 using iOS 7.1 as a build target.
The library is expected to work down to iOS 6 but it has not been tested with
any target older than iOS 7.0.

This library requires ARC (Automatic Reference Counting) and
compilation will fail if ARC support is not available.

Usage

The EMCCountryPickerController must be presented modally by the presenting
view controller. The EMCCountryPickerController won't dismiss itself when a
country is chosen. Instead, EMCCountryPickerController instance will rely on
a delegate conforming to the EMCCountryDelegate protocol to receive the
country selection event and to dismiss it. The delegate can be set either in
Interface Builder using the countryDelegate outlet or programmatically using
the countryDelegate property. When using a storyboard, since an outlet
cannot be connected to a controller in another controller, the controller setup
is usually performed in prepareForSegue:sender::

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([segue.identifier isEqualToString:@"openCountryPicker"])
    {
        EMCCountryPickerController *countryPicker = segue.destinationViewController;
        countryPicker.countryDelegate = self;
    }
}

The EMCCountryDelegate protocol defines one selector which is invoked when a
country has been selected:

- (void)countryController:(id)sender didSelectCountry:(EMCCountry *)chosenCountry;

The presenting view controller usually conforms to this protocol, receives the
notification and dismisses the EMCCountryPickerController instance:

- (void)countryController:(id)sender didSelectCountry:(EMCCountry *)chosenCountry;
{
    // Do something with chosenCountry
    [self dismissViewControllerAnimated:YES completion:nil];
}

Searching Countries

The view provides a search bar that can be used to filter countries by name,
as shown in the following screenshot.

Main view

Showing and Hiding Flags

Flags are shown by default and can be disabled using the property
BOOL showFlags.

Main view

Flag Borders

By default a grey .5 border is drawn around a flag in order to improve its
visual appearance over the default white background. The border can be
configured using the following properties:

  • BOOL drawFlagBorder: enables the flag border. Defaults to YES.
  • UIColor *flagBorderColor: sets the border color. Defaults to
    [UIColor grayColor].
  • CGFloat flagBorderWidth: sets the border width. Defaults to 0.5f.

Localised Country Names

The EMCCountryPickerController library ships with localised country names in:

  • English (en).
  • Italian (it).

Support for additional languages can be easily added by updating the
countries.plist file.

The current implementation selects the locale using the following algorithm:

  • If the countryNameDisplayLocale property of the view controller instance
    is set and not null, then a country name in the specified locale will be
    requested.
  • If a translation in the countryNameDisplayLocale locale is not available
    or it is null, then a translation in the first preferred locale will be
    requested, where the preferred locale is obtained using
    [[NSLocale preferredLanguages] objectAtIndex:0].
  • If a translation in the preferred locale is not available, use English.

Demo Code

A demo project named EMCCountryPickerControllerDemo using a storyboard and
highlighting the library major features is shipped with the library code.

Getting the Software

The recommended way to get the sources of EMCCountryPickerController in order
to build it on your system is getting a release tarball.

Bug Reports

Bug reports can be opened at the official GitHub repository.

Copyright (c) 2014, Enrico Maria Crisostomo
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

  • Redistributions of source code must retain the above copyright notice, this
    list of conditions and the following disclaimer.
  • Redistributions in binary form must reproduce the above copyright notice,
    this list of conditions and the following disclaimer in the documentation
    and/or other materials provided with the distribution.
  • Neither the name of the {organization} nor the names of its
    contributors may be used to endorse or promote products derived from
    this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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