Every programmer can implement his/her own theme managerment in IOS. Perhaps using delegate, NSNotificationCenter or subclass UIView. But it is too complex for me. So I wrote my own one, and it's super easy to use, just add one line code, as follows
[self.view addThemeChangeBlock:^(NSString *name, UIColor *color, UIFont *font, UIColor *fontColor) {...};The key technology is Objective-C runtime func and a Non-Retaining mutable set.
- (void)viewDidLoad
{
[super viewDidLoad];
__weak FirstViewController *weakSelf = self;
[self.view addThemeChangeBlock:^(NSString *name, UIColor *color, UIFont *font, UIColor *fontColor) {
weakSelf.view.backgroundColor = color;
NSString *themePath = [[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"theme"]
stringByAppendingPathComponent:name];
UIImage *buttonImage = [[UIImage imageWithContentsOfFile:[themePath stringByAppendingPathComponent:@"button.png"]]
resizableImageWithCapInsets:UIEdgeInsetsMake(18, 18, 18, 18)];
UIImage *buttonImageHighlight = [[UIImage imageWithContentsOfFile:[themePath stringByAppendingPathComponent:@"buttonHighlight.png"]]
resizableImageWithCapInsets:UIEdgeInsetsMake(18, 18, 18, 18)];
[weakSelf.setThemeButton setBackgroundImage:buttonImage forState:UIControlStateNormal];
[weakSelf.setThemeButton setBackgroundImage:buttonImageHighlight forState:UIControlStateHighlighted];
[weakSelf.showThemedUIViewCountButton setBackgroundImage:buttonImage forState:UIControlStateNormal];
[weakSelf.showThemedUIViewCountButton setBackgroundImage:buttonImageHighlight forState:UIControlStateHighlighted];
}];
}- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
__weak AppDelegate *weakSelf = self;
[self.window.rootViewController.view addThemeChangeBlock:^(NSString *name, UIColor *color, UIFont *font, UIColor *fontColor) {
NSString *themePath = [[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"theme"]
stringByAppendingPathComponent:name];
UIImage *gradientImage44 = [[UIImage imageWithContentsOfFile:[themePath stringByAppendingPathComponent:@"navTexture44.png"]]
resizableImageWithCapInsets:UIEdgeInsetsMake(0, 0, 0, 0)];
UIImage *gradientImage32 = [[UIImage imageWithContentsOfFile:[themePath stringByAppendingPathComponent:@"navTexture32.png"]]
resizableImageWithCapInsets:UIEdgeInsetsMake(0, 0, 0, 0)];
[((UINavigationController *)(weakSelf.window.rootViewController)).navigationBar setBackgroundImage:gradientImage44
forBarMetrics:UIBarMetricsDefault];
[((UINavigationController *)(weakSelf.window.rootViewController)).navigationBar setBackgroundImage:gradientImage32
forBarMetrics:UIBarMetricsLandscapePhone];
}];
return YES;
}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];
__weak UITableViewCell *weakCell = cell;
[cell addThemeChangeBlock:^(NSString *name, UIColor *color, UIFont *font, UIColor *fontColor) {
weakCell.backgroundColor = color;
}];
NSDate *object = self.objects[indexPath.row];
cell.textLabel.text = [object description];
return cell;
}FJThemeManager *themeManager = [FJThemeManager sharedInstance];
if ([themeManager themeItemCount] == 0) {
FJThemeItem *item = [[FJThemeItem alloc] init];
item.name = @"redTheme";
item.color = [UIColor redColor];
[themeManager addThemeItem:item];
item = [[FJThemeItem alloc] init];
item.name = @"greenTheme";
item.color = [UIColor greenColor];
[themeManager addThemeItem:item];
item = [[FJThemeItem alloc] init];
item.name = @"blueTheme";
item.color = [UIColor blueColor];
[themeManager addThemeItem:item];
[themeManager setCurrentThemeItemIndex:0 withCompletionBlock:nil];
} else {
//
}- (IBAction)segmentValueChanged:(id)sender
{
self.hudView.hidden = NO;
[self.indicator startAnimating];
[[FJThemeManager sharedInstance] setCurrentThemeItemIndex:self.segment.selectedSegmentIndex withCompletionBlock:^(void) {
self.hudView.hidden = YES;
[self.indicator stopAnimating];
}];
}6 files are required: UIView+FJThemeManager.h/.m, FJThemeManager.h/.m and FJThemeItem.h/.m.
So drag the FJThemeManager folder into your project.
And in your code, just #import "FJThemeManager.h"
FJThemeManager uses the 2-clause BSD license. So you should be free to use it pretty much however you want.
Copyright (c) 2012 FengJian. All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
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Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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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.
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.