MPAndroidChart使用方法

android 畫圖表的第三方工具
(五)RadarChart(雷達圖)

implementation 'com.github.PhilJay:MPAndroidChart:v3.0.3’
XML中建立view
<com.github.mikephil.charting.charts.RadarChart
android:id="@+id/bar_radarchart"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"></com.github.mikephil.charting.charts.RadarChart>

Activity中設定

class RadarChart : AppCompatActivity() {
lateinit var radarChart : com.github.mikephil.charting.charts.RadarChart
private var radarData: RadarData?= null
//X轴数据
private val xDatas = ArrayList()
//Y轴数据
private val yDatas1 = ArrayList()
private val yDatas2 = ArrayList()

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_radarchart)

     radarChart = bar_radarchart

    for (i in 0..5) {
        xDatas.add("属性" + (i + 1))
        yDatas1.add(RadarEntry((Math.random() * 10).toFloat(), i.toFloat()))
        yDatas2.add(RadarEntry((Math.random() * 10).toFloat(), i.toFloat()))
    }

    radarData = getRadarData()


    showRadarChart(radarChart, radarData!!)
}

private fun getRadarData() :RadarData{
    val radarDataSet1 = RadarDataSet(yDatas1, "第一组属性")
    radarDataSet1.color = Color.rgb(255, 99, 71)//设置雷达图外边框颜色
    radarDataSet1.fillColor = Color.rgb(255, 174, 185)//设置雷达图内部颜色填充
    radarDataSet1.setDrawFilled(true)//填充
    radarDataSet1.fillAlpha = 180//设置透明度
    radarDataSet1.lineWidth = 2f//设置雷达图边界线宽
    radarDataSet1.isDrawHighlightCircleEnabled = true
    radarDataSet1.setDrawHighlightIndicators(false)

    val radarDataSet2 = RadarDataSet(yDatas2, "第二组属性")
    radarDataSet2.color = Color.rgb(121, 162, 175)
    radarDataSet2.fillColor = Color.rgb(147, 112, 219)
    radarDataSet2.setDrawFilled(true)
    radarDataSet2.fillAlpha = 180
    radarDataSet2.lineWidth = 2f
    radarDataSet2.isDrawHighlightCircleEnabled = true
    radarDataSet2.setDrawHighlightIndicators(false)

    //填充两组Y轴数据
    val radarDataSets = ArrayList<IRadarDataSet>()
    radarDataSets.add(radarDataSet1)
    radarDataSets.add(radarDataSet2)

    return RadarData(radarDataSets)
}

private fun showRadarChart(radarChart1:RadarChart, radarData: RadarData) {
    //描述

    //radarChart1.description(Description("雷达图"))
    //可旋转
    radarChart1.setRotationEnabled(true)
    //Description位置
  //  radarChart1.description.position = (750f,70f)
  //  radarChart1.description.position(750f, 70f)
    //Description字体
 //   radarChart1.setDescriptionTextSize(50)
    //花蜘蛛网
    radarChart1.setDrawWeb(true)
    //设置背景颜色
  //  radarChart1.setBackgroundColor(Color.rgb(255, 102, 0))
    //设置Web主干颜色
    radarChart1.setWebLineWidth(1f)
    //设置Web主干线宽
    radarChart1.setWebColor(Color.rgb(0, 0, 0))
    //设置Web支线颜色
    radarChart1.setWebColorInner(Color.rgb(0, 0, 0))
    //设置Web支线线宽
    radarChart1.setWebLineWidthInner(1f)

    //设置图例
    val legend = radarChart.getLegend()
    legend.setPosition(Legend.LegendPosition.LEFT_OF_CHART_INSIDE)//图例位置
    legend.setForm(Legend.LegendForm.CIRCLE)//图例颜色块形状

    radarChart.setData(radarData)//填充数据
    radarChart.invalidate()//刷新界面

完工