开源代码

WilliamChart图表库

介绍：

WilliamChart 是一个为安卓项目提供图表控件的开源库，他实现了数字的可视化，用作者的话说“我者喜欢看起来干净简单的图表，不想要那么多花哨的功能”。

运行效果：

使用说明：

创建一个新的chart需要继承自ChartView的坐标轴，同时实现一些必要的方法。我觉的这些方法足以让你绘制出任何你想要的效果。

xml

<com.db.chart.view.ChartView
       xmlns:chart="http://schemas.android.com/apk/res-auto"
       android:layout_width="match_parent"
       android:layout_height="dp"
       ...
       chart:chart_shadowDx="dp"
       chart:chart_shadowDy="dp"
       chart:chart_shadowRadius="dp"
       chart:chart_shadowColor="color"
       chart:chart_fontSize="dp"
       chart:chart_typeface="typeface"
       chart:chart_axisBorderSpacing="dp"
       chart:chart_axisThickness="dp"
       chart:chart_axisTopSpacing="dp"
       chart:chart_axisColor="color"
       chart:chart_axisX="boolean"
       chart:chart_label="boolean"
       chart:chart_labelColor="color"
   />

--

// Customize labels
   chart.setLabels(NONE/OUTSIDE/INSIDE)
   chart.setLabelColor(color)
   chart.setFontSize(integer)
   chart.setTypeface(typeface)
   // Define grid
   chart.setGrid(paint)
   chart.setHorizontalGrid(paint)
   chart.setVerticalGrid(paint)
   // Show threshold line
   chart.setThresholdLine(float, paint)
   chart.setMaxAxisValue(integer, integer)
   chart.setStep(integer)
   chart.setTopSpacing(dimen)
   chart.setBorderSpacing(dimen)
   chart.setAxisX(boolean)
   chart.show()
   // Update values of a given set
   chart.updateValues(int, array)
   // Notify chart about updated values
   chart.notifyDataUpdate()
   // Tooltip support
   chart.showTooltip(view)
   chart.dismissTooltip(view)

LineChart（跟上面相同的部分用省略号）

<com.db.chart.LineChartView
       ...
   />

java代码：

LineChartView chartView= new LineChartView()
LineSet lineSet = new LineSet()
lineSet.addPoint(new Point(string, float)
// Style dots
lineSet.setDots(boolean)
lineSet.setDotsColor(color)
lineSet.setDotsRadius(dimen)
lineSet.setDotsStrokeThickness(dimen)
lineSet.setDotsStrokeColor(color)
// Style line
lineSet.setLineThickness(dimen)
lineSet.setLineColor(color)
// Style background fill
lineSet.setFill(boolean)
lineSet.setFillColor(color)
// Style type
lineSet.setDashed(boolean)
lineSet.setSmooth(boolean)
chartView.addData(lineSet)

BarChart & StackBarChart

<com.db.chart.BarChartView
     ...
     chart:chart_barSpacing="dp"
     chart:chart_setSpacing="dp"
 />

java代码

BarChartView chartView = new BarcChartView()
  barChart.setBarSpacing(dimen)
  barChart.setSetSpacing(dimen)
  barChart.setBarBackground(boolean)
  barChart.setBarBackgroundColor(color)
  barChart.setRoundCorners(dimen)
  BarSet barSet = new BarSet()
  Bar bar = new Bar(string, float)
  bar.setColor(color)
  barSet.addBar(bar)
  chartView.addData(barSet)

Listener的设置

chart.setOnEntryClickListener(new OnEntryClickListener(){
     @Override
     public void onClick(int setIndex, int entryIndex, Rect entryRect) {
         //Do things
     }
 });

动画

Animation anim = new Animation()
anim.setDuration(integer)
anim.setEasing(easingFunction)
anim.setEndAction(runnable)
// Animation overlap between entries
anim.setOverlap(float)
// Animation starting point
anim.setStartPoint(float, float)
// Include alpha transition
anim.setAlpha(int)
// Starts animation
chart.animate(animation)

实现BaseEasingMethod 接口你可以自定义你自己的动画函数我已经实现了一些：

  • LinearEase

  • BounceEaseOut

  • ElasticEaseOut

  • CircEaseOut

  • CubicEaseOut

  • ExpoEaseOut

  • QuadEaseOut

  • QuartEaseOut

  • QuintEaseOut

  • SineEaseOut

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