第九天 iOS 绘图

开源库 ios-charts

https://github.com/danielgindi/ios-charts https://github.com/PhilJay/MPAndroidChart

使用

iOS 8 以上可直接用pods安装。

$ pod search charts

-> CSChartsView (0.1.0)
A light weight line graph drawing framework
pod 'CSChartsView', '~> 0.1.0'
- Homepage: https://github.com/sk344208651/CSChartsView - Source:   https://github.com/sk344208651/CSChartsView.git - Versions: 0.1.0 [master repo]

-> Charts (2.1.0)
ios-charts is a powerful & easy to use chart library for iOS
pod 'Charts', '~> 2.1.0'
- Homepage: https://github.com/danielgindi/ios-charts - Source:   https://github.com/danielgindi/ios-charts.git - Versions: 2.1.0, 2.0.9 [master repo]

iOS 7 拖动所有.swift到xcode工程中。

If you want to compile for iOS 7:
Drag the code itself (.swift files) to your project. As sadly, Swift currently does not support compiling Frameworks for iOS 7.
Make sure that the files are added to the Target membership.
When using Swift in an ObjC project: a. You need to import your Bridging Header. Usually it is “YourProject-Swift.h”, so in ChartsDemo it’s “ChartsDemo-Swift.h”. Do not try to actually include “ChartsDemo-Swift.h” in your project :-) a. Under “Build
Options”, mark “Embedded Content Contains Swift Code”

Features 特征

Core features:

8 different chart types
Scaling on both axes (with touch-gesture, axes separately or pinch-zoom)
Dragging / Panning (with touch-gesture)
Combined-Charts (line-, bar-, scatter-, candle-stick-, bubble-)
Dual (separate) Y-Axis
Finger drawing (draw values into the chart with touch-gesture)
Highlighting values (with customizeable popup-views)
Multiple / Separate Axes
Save chart to camera-roll / export to PNG/JPEG
Predefined color templates
Legends (generated automatically, customizeable)
Customizeable Axes (both x- and y-axis)
Animations (build up animations, on both x- and y-axis)
Limit lines (providing additional information, maximums, …)
Fully customizeable (paints, typefaces, legends, colors, background, gestures, dashed lines, …)

Screenshots

creenshots are currently taken from the original repository, as they render exactly the same :-)
LineChart (with legend, simple design)



LineChart (with legend, simple design)



LineChart (cubic lines)



LineChart (single DataSet)



Combined-Chart (bar- and linechart in this case)



BarChart (with legend, simple design)



BarChart (grouped DataSets)



Horizontal-BarChart



PieChart (with selection, …)



ScatterChart (with squares, triangles, circles, … and more)



CandleStickChart (for financial data)



BubbleChart (area covered by bubbles indicates the value)



RadarChart (spider web chart)

Documentation

Currently there’s no need for documentation for the iOS version, as the API is 95% the same as on Android.

You can read the official MPAndroidChart documentation here: Wiki

Or you can see the ChartsDemo project and learn the how-tos from it.