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KMCGeigerCounter

(★ 2,250)

A framerate meter that clicks like a Geiger counter when your animation drops a frame

파일 탐색기

최종 버전 다운로드 (.zip)

- - Contents.json
- - LaunchScreen.storyboard
  - Main.storyboard
- AppDelegate.swift
- CellType.swift
- CheapTableViewCell.swift
- ExampleApplication-Bridging-Header.h
- ExorbitantTableViewCell.swift
- ExpensiveTableViewCell.swift
- Info.plist
- TableViewController.swift
- TitleConfiguring.swift
- KMCGeigerCounter.h
- KMCGeigerCounter.m
- KMCGeigerCounterTick.aiff
- project.pbxproj
.gitignore
.ruby-version
Gemfile
Gemfile.lock
KMCGeigerCounter.podspec
LICENSE
README.md

🚀 설치 가이드

1. 코드 내려받기

git clone https://github.com/kconner/KMCGeigerCounter

깃허브에서 프로젝트 코드 전체를 내 컴퓨터로 내려받습니다.

cd KMCGeigerCounter

방금 내려받은 프로젝트 폴더 안으로 이동합니다.

2. Ruby

쉬움 추천

사전 준비물

Git GitHub에서 프로젝트 코드를 내려받으려면 필요합니다.
Ruby bundle 명령어를 쓰려면 Ruby가 필요합니다.

bundle install

Gemfile에 명시된 루비 라이브러리를 설치합니다.

✅ bundle install이 에러 없이 끝나면 README에 안내된 실행 명령어(예: rails server)로 마저 실행해보세요.

// repository documentation

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# KMCGeigerCounter

This tool is a framerate meter that clicks like a Geiger counter when your animation drops a frame.

A Geiger counter detects invisible particles and alerts you to what you can't see. Dropped frames aren't invisible, but it can be hard to tell the difference between 55 and 60 fps. KMCGeigerCounter makes each dropped frame obvious.

- If you're not consistently animating smoothly, you'll hear a rough, staticky noise.
- If your app runs at a smooth 60 fps, you'll hear the occasional drops to 59 and 58.
- You will hear dropped frames from occasional CPU spikes, like when custom table view cells enter the screen and require layout.

The meter shows two numbers:

- The number of frames dropped in the past second
- The number of frames drawn in the past second

The meter will be orange when you've dropped at least three frames in the past second.

## Installation

`pod 'KMCGeigerCounter'`

Or copy these files into your project:

- KMCGeigerCounter.h
- KMCGeigerCounter.m
- KMCGeigerCounter.aiff

If you're not using CocoaPods, you may need to add this framework to your Link Binary With Libraries build phase:

- AudioToolbox.framework

## Usage

In your `UIApplicationDelegate`, enable the tool:

```objc
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // …
    [self.window makeKeyAndVisible];

[KMCGeigerCounter sharedGeigerCounter].enabled = YES;
}
```

Build and run your app. Navigate through your app and listen for clicks.

## Known issue

Dropped frames on iOS can be divided into two types, which I'll call CPU and GPU drops. CPU drops happen when main thread activity delays the preparation of your layer tree, like when Auto Layout evaluates a complex set of constraints. CPU drops are easy to measure by observing the delivery timing of regularly scheduled events on the main thread. GPU drops happen when the layer tree is expensive to draw, such as when there are too many blended layers. Due to the nature of iOS, GPU drops happen in a system process responsible for drawing. I haven't found a way to measure them without adversely affecting the app's framerate. The upshot is that only CPU drops can be detected by this library today. Fortunately, more powerful iOS devices have made GPU drops much less common than they used to be, and you can always use the Core Animation instrument to measure them faithfully.

## Notes

Remember to turn off Silent mode, or you won't hear anything.

You should remove KMCGeigerCounter before shipping to the App Store. It can't be good for battery life.

The iOS Simulator doesn't simulate device performance, so consider enabling the tool only for device builds:

```objc
#if !TARGET_IPHONE_SIMULATOR
[KMCGeigerCounter sharedGeigerCounter].enabled = YES;
#endif
```