MPAndroidChart之LineChart双线绘制

效果图

Activity:

package com.wentong.administrator.mpandroid;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import com.github.mikephil.charting.charts.LineChart;
import com.github.mikephil.charting.components.YAxis;
import com.github.mikephil.charting.data.Entry;
import com.github.mikephil.charting.data.LineData;
import com.github.mikephil.charting.data.LineDataSet;
import com.github.mikephil.charting.interfaces.datasets.ILineDataSet;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

//申明控件
LineChart lineChart ;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//静态加载布局
setContentView(R.layout.activity_main);
//双线绘制
drawDoublet();
}
private void drawDoublet(){
//找到控件
lineChart = (LineChart) findViewById(R.id.chart) ;
//创建Entry保存你的数据
List<Entry> entry1 = new ArrayList<Entry>() ; //折线一的数据源
List<Entry> entry2 = new ArrayList<Entry>() ; //折线二的数据源
//向折线一添加数据
Entry x1 = new Entry(0f , 10000f) ;
entry1.add(x1) ;
Entry x2 = new Entry(1f , 14000f) ;
entry1.add(x2) ;
Entry x3 = new Entry(2f , 5000f) ;
entry1.add(x3) ;
Entry x4 = new Entry(3f , 12000f) ;
entry1.add(x4) ;
//向折线二添加数据
Entry y1 = new Entry(0f , 13000f) ;
entry2.add(y1) ;
Entry y2 = new Entry(1f , 15500f) ;
entry2.add(y2) ;
Entry y3 = new Entry(3f , 5500f) ;
entry2.add(y3) ;
Entry y4 = new Entry(4f , 10000f) ;
entry2.add(y4) ;
//将数据传递给LineDataSet对象
LineDataSet set1 = new LineDataSet(entry1 , "折线一") ;
//调用setAxisDependency（）指定DataSets绘制相应的折线
set1.setAxisDependency(YAxis.AxisDependency.LEFT);
//折线一 折线的颜色
set1.setColor(getResources().getColor(R.color.colorAccent));
LineDataSet set2 = new LineDataSet(entry2 , "折线二") ;
set2.setAxisDependency(YAxis.AxisDependency.LEFT);
//折线二 折线的颜色
set2.setColor(getResources().getColor(R.color.colorPrimary));
//使用接口ILineDataSet
List<ILineDataSet> dataSets = new ArrayList<ILineDataSet>() ;
//添加数据
dataSets.add(set1) ;
dataSets.add(set2) ;
LineData data = new LineData(dataSets) ;

4000
//设置图表
lineChart.setData(data);
//刷新
lineChart.invalidate();
}
}

XML：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.wentong.administrator.mpandroid.MainActivity">

<com.github.mikephil.charting.charts.LineChart
android:id="@+id/chart"
android:layout_width="match_parent"
android:layout_height="match_parent"></com.github.mikephil.charting.charts.LineChart>

</RelativeLayout>

ok！