Android图表库MPAndroidChart(六)饼状图-折线百分比--688IT编程网

Android图表库MPAndroidChart（六）饼状图-折线百分⽐

应⽤

package com.fate.mpandroidchartfive;

aphics.Color;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

SpannableString;

import android.view.View;

import android.widget.Button;

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

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

import com.github.mikephil.chartingponents.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.interfaces.datasets.IDataSet;

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, View.OnClickListener {

private PieChart mPieChart;

//显⽰百分⽐

private Button btn_show_percentage;

//显⽰类型

private Button btn_show_type;

//x轴动画

private Button btn_anim_x;

//y轴动画

private Button btn_anim_y;

//xy轴动画

private Button btn_anim_xy;

//保存到sd卡

private Button btn_save_pic;

//显⽰中间⽂字

private Button btn_show_center_text;

//旋转动画

private Button btn_anim_rotating;

@Override

protected void onCreate(Bundle savedInstanceState) {

setContentView(R.layout.activity_main);

initView();

}

//初始化

private void initView() {

btn_show_percentage = (Button) findViewById(R.id.btn_show_percentage); btn_show_percentage.setOnClickListener(this);

btn_show_type = (Button) findViewById(R.id.btn_show_type);

btn_show_type.setOnClickListener(this);

btn_anim_x = (Button) findViewById(R.id.btn_anim_x);

btn_anim_x.setOnClickListener(this);

btn_anim_y = (Button) findViewById(R.id.btn_anim_y);

btn_anim_y.setOnClickListener(this);

btn_anim_xy = (Button) findViewById(R.id.btn_anim_xy);

btn_anim_xy.setOnClickListener(this);

btn_save_pic = (Button) findViewById(R.id.btn_save_pic);

btn_save_pic.setOnClickListener(this);

btn_show_center_text = (Button) findViewById(R.id.btn_show_center_text); btn_show_center_text.setOnClickListener(this);

btn_anim_rotating = (Button) findViewById(R.id.btn_anim_rotating);

btn_anim_rotating.setOnClickListener(this);

//折现饼状图

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

mPieChart.setUsePercentValues(true);

mPieChart.setExtraOffsets(5, 10, 5, 5);typec转dp

mPieChart.setDragDecelerationFrictionCoef(0.95f);

//绘制中间⽂字

mPieChart.setCenterText(generateCenterSpannableText());

mPieChart.setExtraOffsets(20.f, 0.f, 20.f, 0.f);

mPieChart.setDrawHoleEnabled(true);

mPieChart.setHoleColor(Color.WHITE);

mPieChart.setTransparentCircleColor(Color.WHITE);

mPieChart.setTransparentCircleAlpha(110);

mPieChart.setHoleRadius(58f);

mPieChart.setTransparentCircleRadius(61f);

mPieChart.setDrawCenterText(true);

mPieChart.setRotationAngle(0);

// 触摸旋转

mPieChart.setRotationEnabled(true);

mPieChart.setHighlightPerTapEnabled(true);

// 添加⼀个选择

mPieChart.setOnChartValueSelectedListener(this);

/模拟数据

ArrayList<PieEntry> entries = new ArrayList<PieEntry>();

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);

//默认动画

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

Legend l = Legend();

l.setVerticalAlignment(Legend.LegendVerticalAlignment.TOP);

l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT); l.setOrientation(Legend.LegendOrientation.VERTICAL);

l.setDrawInside(false);

l.setEnabled(false);

}

//设置数据

private void setData(ArrayList<PieEntry> entries) {

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

dataSet.setSliceSpace(3f);

dataSet.setSelectionShift(5f);

ArrayList<Integer> colors = new ArrayList<Integer>();

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.HoloBlue());

dataSet.setColors(colors);

dataSet.setValueLinePart1OffsetPercentage(80.f);

dataSet.setValueLinePart1Length(0.2f);

dataSet.setValueLinePart2Length(0.5f);

dataSet.setYValuePosition(PieDataSet.ValuePosition.OUTSIDE_SLICE);

PieData data = new PieData(dataSet);

data.setValueFormatter(new PercentFormatter());

data.setValueTextSize(11f);

data.setValueTextColor(Color.BLACK);

mPieChart.setData(data);

/ 撤销所有的亮点

mPieChart.highlightValues(null);

mPieChart.invalidate();

}

//绘制中⼼⽂字

private SpannableString generateCenterSpannableText() {

SpannableString s = new SpannableString("成绩占⽐");

return s;

}

@Override

public void onValueSelected(Entry e, Highlight h) {

}

@Override

public void onNothingSelected() {

}

@Override

public void onClick(View v) {

switch (v.getId()) {

//显⽰百分⽐

case R.id.btn_show_percentage:

for (IDataSet<?> set : Data().getDataSets())

set.setDrawValues(!set.isDrawValuesEnabled());

mPieChart.invalidate();

break;

//显⽰类型

case R.id.btn_show_type:

if (mPieChart.isDrawHoleEnabled())

mPieChart.setDrawHoleEnabled(false);

else

mPieChart.setDrawHoleEnabled(true);

mPieChart.invalidate();

break;

/x轴动画

case R.id.btn_anim_x:

mPieChart.animateX(1400);

break;

//y轴动画

case R.id.btn_anim_y:

mPieChart.animateY(1400);

break;

//xy轴动画

case R.id.btn_anim_xy:

mPieChart.animateXY(1400, 1400);

break;

//保存到sd卡

case R.id.btn_save_pic:

mPieChart.saveToPath("title" + System.currentTimeMillis(), "");

break;

//显⽰中间⽂字

case R.id.btn_show_center_text:

if (mPieChart.isDrawCenterTextEnabled())

mPieChart.setDrawCenterText(false);

else

mPieChart.setDrawCenterText(true);

mPieChart.invalidate();

break;

//旋转动画

case R.id.btn_anim_rotating:

mPieChart.spin(1000, RotationAngle(), RotationAngle() + 360, Easing.EasingOption .EaseInCubic);

break;

}

布局

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout

xmlns:android="schemas.android/apk/res/android"

xmlns:android="schemas.android/apk/res/android" android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical">

<com.github.mikephil.charting.charts.PieChart

android:id="@+id/mPieChart"

android:layout_width="match_parent"

android:layout_height="0dp"

android:layout_weight="1"/>

<LinearLayout

android:layout_width="match_parent"