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代码中更改Icon图标---iOS笔记摘录

  1. Info.plist

CFBundleIcons   CFBundlePrimaryIcon  CFBundleIconFiles    原AppIcon图标名  CFBundleAlternateIcons    icon01         CFBundleIconFiles         AppIcon图标名2         icon02        CFBundleIconFiles      AppIcon图标名3

2.将所有AppIcon放入工程中(不要放在Assets.xcassets)

3.代码

// 更换
if ([UIApplication sharedApplication].supportsAlternateIcons) {
       [[UIApplication sharedApplication] setAlternateIconName:图标名 completionHandler:^(NSError * _Nullable error) {
           if (!error) {
               NSLog(@"success:%@",图标名);
           }else{
               NSLog(@"error:%@",error);
           }
       }];
   } else {
       NSLog(@"不能更换icon");
       return;
   }
}
// 还原
if ([UIApplication sharedApplication].alternateIconName != nil) {  // 图标被替换过
       // 重置icon
       [[UIApplication sharedApplication] setAlternateIconName:nil completionHandler:^(NSError * _Nullable error) {
           if (!error) {
               NSLog(@"success");
           } else {
               NSLog(@"error:%@",error);
           }
       }];
   }

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