CaveOps | Post: iOS 10.3: Setup Alternate Icon

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最近苹果发布了新的 iOS 正式版本 10.3, 有一个新特性引起了不少人的注意 —— 换图标。

看了看文档, 代码简单到只有一句话:

[[UIApplication sharedApplication] setAlternateIconName:@"" completionHandler:^(NSError * _Nullable error) {
}];

当然, 在使用这句代码前, 还是需要改一下 Info.plist 文件, 格式为:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "https://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>CFBundleAlternateIcons</key>
    <dict>
        <key>新图标名称</key>
        <dict>
            <key>CFBundleIconFiles</key>
            <array>
                <string>新图标名称</string>
            </array>
            <key>UIPrerenderedIcon</key>
            <false/>
        </dict>
    </dict>
    <key>CFBundlePrimaryIcon</key>
    <dict>
        <key>CFBundleIconFiles</key>
        <array>
            <string>AppIcon</string>
        </array>
        <key>UIPrerenderedIcon</key>
        <false/>
    </dict>
</dict>
</plist>

作为示例我准备了一张 180×180 (px) 的图标 —— favicon_2-60 (@2x、@3x), 修改 Info.plist:

加入项目中:

默认图标直接使用 AppIcon.appiconset 即可。

好了, 用一开始的代码试一试效果:

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (IBAction)useOne:(id)sender {
    [self changeIcon:nil];
}
- (IBAction)useTwo:(id)sender {
    [self changeIcon:@"favicon_2-60"];
}

- (void)changeIcon:(NSString *)name {
    [[UIApplication sharedApplication] setAlternateIconName:name completionHandler:^(NSError * _Nullable error) {
        if (error) {
            NSLog(@"error = %@", error.localizedDescription);
        } else {
            [self clickHomeButton];
        }
    }];
}

- (void)clickHomeButton {
    // DO NOT USE THIS FOR APP STORE VERSION
    [[UIApplication sharedApplication] performSelector:@selector(suspend)];
}