动态改变图标

一、开始的启蒙

开始想到做这个功能，也是在早上坐公交车上班的时候翻阅技术公众号看到的，抽空就自己实现了一下。

二、开发主要步骤

• 准备好更换的图标
• 修改plist文件，放好图标的位置
  

  1.CFBundleIcons:一个字典，包含所有AppIcon信息，即上图的Icon files(iOS 5)
  2.CFBundlePrimaryIcon:如果已经在Assets.xcassets中设置了AppIcon，那么CFBundlePrimaryIcon中的配置会被忽略，3.Assets.xcassets的AppIcon将会自动配置到CFBundlePrimaryIcon中。
  4.CFBundleAlternateIcons:一个数组，负责配置可供替换的icon信息
  5.UIPrerenderedIcon:是否已经预渲染，如果不设置该项或者设为NO。系统会自动为icon进行渲染增加光泽

• 编写代码
  1.引入工具类：FSAppIconManager
  2.添加更换按钮
  3.修改AppDelegate.m文件

///添加本地通知
#import <UserNotifications/UserNotifications.h>
@interface AppDelegate () <UNUserNotificationCenterDelegate>
@end

@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    // 注册通知
    if (@available(iOS 10.0, *)) {
        UNUserNotificationCenter* center = [UNUserNotificationCenter currentNotificationCenter];
        center.delegate = self;
        [center requestAuthorizationWithOptions:(UNAuthorizationOptionAlert + UNAuthorizationOptionSound)
                              completionHandler:^(BOOL granted, NSError * _Nullable error) {
                                  if(!error)
                                  {
                                      NSLog(@"@授权成功");
                                  }
                              }];
        [center getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) {
            NSLog(@"%@",settings);
        }];
    } else {
        // Fallback on earlier versions
    }
    return YES;
}

- (void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions))completionHandler API_AVAILABLE(ios(10.0)){
    NSLog(@"willPresentNotification:%@",notification.request.content.title);
    // 这里真实需要处理交互的地方
    // 获取通知所带的数据
    NSString *apsContent = [notification.request.content.userInfo objectForKey:@"type"];
    NSLog(@"%@",apsContent);
    
    completionHandler(UNNotificationPresentationOptionAlert);
}

-(void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void (^)(void))completionHandler API_AVAILABLE(ios(10.0)){
    //在没有启动本App(包括后台运行中)时，收到服务器推送消息，下拉消息会有快捷回复的按钮，点击按钮后调用的方法，根据identifier来判断点击的哪个按钮
    NSString *apsContent = [response.notification.request.content.userInfo objectForKey:@"type"];
    NSLog(@"didReceiveNotificationResponse:%@",response.notification.request.content.title);
    NSLog(@"%@",apsContent);
}

4、在viewController中编写点击事件

#import "FSAppIconManager.h"
#import <UserNotifications/UserNotifications.h>

@interface ViewController () <UNUserNotificationCenterDelegate>

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    NSString *name = [FSAppIconManager getCurrentAppIconName];
    NSLog(@"name: %@", name);
}

- (IBAction)changeAppIcon:(id)sender {
    BOOL canChangeAppIcon = [FSAppIconManager canChangeAppIcon];
    NSLog(@"canChangeAppIcon value: %@", canChangeAppIcon?@"YES":@"NO");
    if (!canChangeAppIcon) {
        return;
    }
    NSString *name = [FSAppIconManager getCurrentAppIconName];
    NSString *changeName = @"male";
    if ([name isEqualToString:@"male"]) {
        changeName = @"female";
    }
    [FSAppIconManager changeAppIconWithIconName:changeName completionHandler:^(NSError * _Nullable error) {
        NSLog(@"error: %@", error);
    }];
}

- (IBAction)sendLocalPush:(UIButton *)sender {
    //8s后提醒
//    UNTimeIntervalNotificationTrigger *trigger1 = [UNTimeIntervalNotificationTrigger triggerWithTimeInterval:8 repeats:NO];
    
    //每周一早上 8：00 提醒我给起床
//    NSDateComponents *components = [[NSDateComponents alloc] init];
//    components.weekday = 2;
//    components.hour = 8;
//    UNCalendarNotificationTrigger *trigger3 = [UNCalendarNotificationTrigger triggerWithDateMatchingComponents:components repeats:YES];
//
//    //需导入定位库   #import <CoreLocation/CoreLocation.h>
//    //一到距离(123.333, 123.344）点20米就喊我下车
//    CLRegion *region = [[CLRegion alloc] initCircularRegionWithCenter:CLLocationCoordinate2DMake(123.333, 123.344) radius:20 identifier:@"regionidentifier"];
//
//    UNLocationNotificationTrigger *trigger4 = [UNLocationNotificationTrigger triggerWithRegion:region repeats:NO];
    
    if (@available(iOS 10.0, *)) {
        UNMutableNotificationContent *content = [[UNMutableNotificationContent alloc] init];
        content.title = @"this is Notifications";
        content.subtitle = @"本地通知";
        content.body = @"推送一条本地通知";
        content.badge = @1;
        content.userInfo = @{@"type":@"this is a userNotification"};
        //每小时重复 1 次喊我喝水
        UNTimeIntervalNotificationTrigger *trigger2 = [UNTimeIntervalNotificationTrigger triggerWithTimeInterval:60 repeats:YES];
        NSString *requestIdentifier = @"sampleRequest";
        UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:requestIdentifier content:content trigger:trigger2];
        UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
        [center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) {
            if (error) {
                NSLog(@"本地消息推送失败：%@", error);
            }
        }];
    } else {
        // Fallback on earlier versions
    }
}