MPAndroidChart饼图用法系列一

一、效果展示：

01.png

02.png

03.png

二、用法：
1、配置仓库：工程路径下面的build.gradle文件中引入 maven { url "https://jitpack.io" }

04.png

2、 引入jar包：
compile 'com.github.PhilJay:MPAndroidChart:v3.0.2'

3、XML中使用饼图控件

05.png

4、

package com.cd.mobile.demochart;

import android.graphics.Color;

import android.graphics.Typeface;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.text.SpannableString;

import android.text.style.ForegroundColorSpan;

import android.text.style.RelativeSizeSpan;

import android.text.style.StyleSpan;

import com.github.mikephil.charting.animation.Easing;

import com.github.mikephil.charting.charts.PieChart;

import com.github.mikephil.charting.components.Legend;

import com.github.mikephil.charting.data.Entry;

import com.github.mikephil.charting.data.PieData;

import com.github.mikephil.charting.data.PieDataSet;

import com.github.mikephil.charting.data.PieEntry;

import com.github.mikephil.charting.formatter.PercentFormatter;

import com.github.mikephil.charting.highlight.Highlight;

import com.github.mikephil.charting.listener.OnChartValueSelectedListener;

import com.github.mikephil.charting.utils.ColorTemplate;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity implements OnChartValueSelectedListener {

private PieChart mPieChart;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

initView();

initData();

}

private void initView() {

//饼状图

mPieChart = (PieChart) findViewById(R.id.mPieChart);

mPieChart.setUsePercentValues(true);//设置value是否用显示百分数,默认为false

mPieChart.getDescription().setEnabled(false);//设置描述

mPieChart.setExtraOffsets(5, 10, 5, 5);//设置饼状图距离上下左右的偏移量

mPieChart.setDragDecelerationFrictionCoef(0.95f);//设置阻尼系数,范围在[0,1]之间,越小饼状图转动越困难

//设置中间文件

mPieChart.setCenterText(generateCenterSpannableText());

// mPieChart.setCenterText("总学生数:100人");

mPieChart.setDrawHoleEnabled(true);//是否绘制饼状图中间的圆

mPieChart.setHoleColor(Color.WHITE);//饼状图中间的圆的绘制颜色

mPieChart.setTransparentCircleColor(Color.WHITE);//设置圆环的颜色

mPieChart.setTransparentCircleAlpha(110);//设置圆环的透明度[0,255]

mPieChart.setHoleRadius(58f);//饼状图中间的圆的半径大小

mPieChart.setTransparentCircleRadius(61f);//设置圆环的半径值

mPieChart.setDrawCenterText(true);//是否绘制中间的文字

mPieChart.setRotationAngle(0);//设置饼状图旋转的角度

// 触摸旋转

mPieChart.setRotationEnabled(true);;//设置饼状图是否可以旋转(默认为true)

mPieChart.setHighlightPerTapEnabled(true);//设置旋转的时候点中的tab是否高亮(默认为true)

//变化监听

mPieChart.setOnChartValueSelectedListener(this);

}

private void initData() {

//模拟数据

ArrayList entries = new ArrayList();

entries.add(new PieEntry(40, "优秀"));

entries.add(new PieEntry(20, "满分"));

entries.add(new PieEntry(30, "及格"));

entries.add(new PieEntry(10, "不及格"));

//设置数据

setData(entries);

mPieChart.animateY(1400, Easing.EasingOption.EaseInOutQuad);

//设置每个tab的显示位置

Legend l = mPieChart.getLegend();

l.setVerticalAlignment(Legend.LegendVerticalAlignment.TOP);

l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT);

l.setOrientation(Legend.LegendOrientation.VERTICAL);

l.setDrawInside(false);

l.setXEntrySpace(0f);

l.setYEntrySpace(0f);//设置tab之间Y轴方向上的空白间距值

l.setYOffset(0f);

// 输入标签样式

mPieChart.setDrawEntryLabels(true);//设置是否绘制Label

mPieChart.setEntryLabelColor(Color.WHITE);//设置绘制Label的颜色

mPieChart.setEntryLabelTextSize(12f);//设置绘制Label的字体大小

}

//设置中间文字

private SpannableString generateCenterSpannableText() {

//原文：MPAndroidChart\ndeveloped by Philipp Jahoda

SpannableString s = new SpannableString("设置中间标题\n\n设置属性控制文字样式");

s.setSpan(new RelativeSizeSpan(1.7f), 0, 6, 0);

// s.setSpan(new StyleSpan(Typeface.NORMAL), 14, s.length() - 15, 0);

// s.setSpan(new ForegroundColorSpan(Color.GRAY), 14, s.length() - 15, 0);

// s.setSpan(new RelativeSizeSpan(.8f), 14, s.length() - 15, 0);

// s.setSpan(new StyleSpan(Typeface.ITALIC), s.length() - 14, s.length(), 0);

// s.setSpan(new ForegroundColorSpan(ColorTemplate.getHoloBlue()), s.length() - 14, s.length(), 0);

return s;

}

//设置数据

private void setData(ArrayList entries) {

PieDataSet dataSet = new PieDataSet(entries, "三年级一班");

dataSet.setSliceSpace(3f);

dataSet.setSelectionShift(5f);

//数据和颜色

ArrayList colors = new ArrayList();

for (int c : ColorTemplate.VORDIPLOM_COLORS)

colors.add(c);

for (int c : ColorTemplate.JOYFUL_COLORS)

colors.add(c);

for (int c : ColorTemplate.COLORFUL_COLORS)

colors.add(c);

for (int c : ColorTemplate.LIBERTY_COLORS)

colors.add(c);

for (int c : ColorTemplate.PASTEL_COLORS)

colors.add(c);

colors.add(ColorTemplate.getHoloBlue());

dataSet.setColors(colors);

PieData data = new PieData(dataSet);

data.setValueFormatter(new PercentFormatter());

data.setValueTextSize(11f);

data.setValueTextColor(Color.WHITE);

mPieChart.setData(data);

mPieChart.highlightValues(null);

//刷新

mPieChart.invalidate();

}

@Override

public void onValueSelected(Entry e, Highlight h) {

}

@Override

public void onNothingSelected() {

}

}

资源下载:
Android Studio Demo
https://download.csdn.net/download/pillar1066527881/10357290