Android 实现会旋转的饼状统计图实例代码最近在做一个项目,由于有需要统计的需要,于是就做成了下面饼状统计图。
下图是效果图:

大致思路是:

关于的介绍这里不做详细介绍,如果想深入请点击开源项目MPAndroidChart
下面是其实现:
首先是添加MPAndroidChart依赖:
maven { url "https://jitpack.io" }

compile "com.github.PhilJay:MPAndroidChart:v3.0.1"
Mainactivitypackage com.example.geekp.myapplication;import android.graphics.Color;import android.graphics.Typeface;import android.support.annotation.Nullable;import android.support.design.widget.TabLayout;import android.support.design.widget.FloatingActionButton;import android.support.design.widget.Snackbar;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.Toolbar;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentManager;import android.support.v4.app.FragmentPagerAdapter;import android.support.v4.view.ViewPager;import android.os.Bundle;import android.text.SpannableString;import android.text.style.RelativeSizeSpan;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.view.Window;import android.view.WindowManager;import android.widget.TextView;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.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.utils.ColorTemplate;import java.util.ArrayList;import butterknife.BindView;import butterknife.ButterKnife;public class MainActivity extends AppCompatActivity {private SectionsPagerAdapter mSectionsPagerAdapter;private ViewPager mViewPager;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);//设置全屏getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);setContentView(R.layout.activity_main);Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);setSupportActionBar(toolbar);// Create the adapter that will return a fragment for each of the three// primary sections of the activity.mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());// Set up the ViewPager with the sections adapter.mViewPager = (ViewPager) findViewById(R.id.container);mViewPager.setAdapter(mSectionsPagerAdapter);getSupportActionBar().setTitle("饼状统计图");TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);tabLayout.setupWithViewPager(mViewPager);}//fragmentpublic static class PlaceholderFragment extends Fragment {@BindView(R.id.chart1)PieChart mChart;@BindView(R.id.tvXMax)TextView tvXMax;@BindView(R.id.tvYMax)TextView tvYMax;protected String[] mParties = new String[]{"已完成", "未完成"};protected Typeface mTfRegular;protected Typeface mTfLight;private static final String ARG_SECTION_NUMBER = "section_number";public PlaceholderFragment() {}public static PlaceholderFragment newInstance(int sectionNumber) {PlaceholderFragment fragment = new PlaceholderFragment();Bundle args = new Bundle();args.putInt(ARG_SECTION_NUMBER, sectionNumber);fragment.setArguments(args);return fragment;}@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {View rootView = inflater.inflate(R.layout.fragment_main, container, false);ButterKnife.bind(this, rootView);int index = getArguments().getInt(ARG_SECTION_NUMBER);mTfRegular = Typeface.createFromAsset(getContext().getAssets(), "OpenSans-Regular.ttf");mTfLight = Typeface.createFromAsset(getContext().getAssets(), "OpenSans-Light.ttf");mChart.setUsePercentValues(true);mChart.getDescription().setEnabled(false);mChart.setExtraOffsets(5, 10, 5, 5);mChart.setDragDecelerationFrictionCoef(0.95f);mChart.setCenterTextTypeface(mTfLight);mChart.setCenterText(generateCenterSpannableText(index));mChart.setDrawHoleEnabled(true);mChart.setHoleColor(Color.WHITE);mChart.setTransparentCircleColor(Color.WHITE);mChart.setTransparentCircleAlpha(110);mChart.setHoleRadius(58f);mChart.setTransparentCircleRadius(61f);mChart.setDrawCenterText(true);mChart.setRotationAngle(0);// enable rotation of the chart by touchmChart.setRotationEnabled(true);mChart.setHighlightPerTapEnabled(true);setData(index);mChart.animateY(1400, Easing.EasingOption.EaseInOutQuad);// mChart.spin(2000, 0, 360);Legend l = mChart.getLegend();l.setVerticalAlignment(Legend.LegendVerticalAlignment.TOP);l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT);l.setOrientation(Legend.LegendOrientation.VERTICAL);l.setDrawInside(false);l.setXEntrySpace(7f);l.setYEntrySpace(0f);l.setYOffset(0f);// entry label stylingmChart.setEntryLabelColor(Color.WHITE);mChart.setEntryLabelTypeface(mTfRegular);mChart.setEntryLabelTextSize(12f);return rootView;}//饼状图中间要显示的内容private SpannableString generateCenterSpannableText(int index) {String sectionName = "";switch (index) {case 1:sectionName = "科目一";break;case 2:sectionName = "科目二";break;case 3:sectionName = "科目三";break;case 4:sectionName = "科目四";break;}SpannableString s = new SpannableString(sectionName);s.setSpan(new RelativeSizeSpan(1.7f), 0, sectionName.length(), 0);return s;}private void setData(int fragmentIndex) {ArrayList<PieEntry> entries = new ArrayList<PieEntry>();PieDataSet dataSet = new PieDataSet(entries, "正确率:" + 25 + "%");dataSet.setSliceSpace(3f);dataSet.setSelectionShift(5f);ArrayList<Integer> colors = new ArrayList<Integer>();if (fragmentIndex == 1) {//这里写的是饼状图的组成部分,像我这样写就是第一部分是占百分之七十五,第二部分是占了百分之二十五entries.add(new PieEntry(75, mParties[0]));entries.add(new PieEntry(25, mParties[1]));for (int c : ColorTemplate.VORDIPLOM_COLORS)colors.add(c);} else if (fragmentIndex == 2) {entries.add(new PieEntry(50, mParties[0]));entries.add(new PieEntry(50, mParties[1]));colors.add(getResources().getColor(R.color.piecolor8));colors.add(getResources().getColor(R.color.piecolor2));} else if (fragmentIndex == 3) {entries.add(new PieEntry(45, mParties[0]));entries.add(new PieEntry(55, mParties[1]));colors.add(getResources().getColor(R.color.piecolor3));colors.add(getResources().getColor(R.color.piecolor4));} else {entries.add(new PieEntry(60, mParties[0]));entries.add(new PieEntry(40, mParties[1]));colors.add(getResources().getColor(R.color.piecolor5));colors.add(getResources().getColor(R.color.piecolor6));}colors.add(ColorTemplate.getHoloBlue());dataSet.setColors(colors);//dataSet.setSelectionShift(0f);PieData data = new PieData(dataSet);data.setValueFormatter(new PercentFormatter());data.setValueTextSize(11f);data.setValueTextColor(Color.BLACK);data.setValueTypeface(mTfLight);mChart.setData(data);// undo all highlightsmChart.highlightValues(null);mChart.invalidate();}}//适配器public class SectionsPagerAdapter extends FragmentPagerAdapter {public SectionsPagerAdapter(FragmentManager fm) {super(fm);}@Overridepublic Fragment getItem(int position) {return PlaceholderFragment.newInstance(position + 1);}@Overridepublic int getCount() {return 4;}//这个方法用于显示标题@Overridepublic CharSequence getPageTitle(int position) {switch (position) {case 0:return "科目一";case 1:return "科目二";case 2:return "科目三";case 3:return "科目四";}return null;}}}
activity_main.xml<?xml version="1.0" encoding="utf-8"?><android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/main_content"android:layout_width="match_parent"android:layout_height="match_parent"android:fitsSystemWindows="true"tools:context="com.example.geekp.myapplication.MainActivity"><android.support.design.widget.AppBarLayoutandroid:id="@+id/appbar"android:layout_width="match_parent"android:layout_height="wrap_content"android:paddingTop="@dimen/appbar_padding_top"android:theme="@style/AppTheme.AppBarOverlay"><android.support.v7.widget.Toolbarandroid:id="@+id/toolbar"android:layout_width="match_parent"android:layout_height="?attr/actionBarSize"android:background="?attr/colorPrimary"app:layout_scrollFlags="scroll|enterAlways"app:popupTheme="@style/AppTheme.PopupOverlay"></android.support.v7.widget.Toolbar><android.support.design.widget.TabLayoutandroid:id="@+id/tabs"android:layout_width="match_parent"android:layout_height="wrap_content" /></android.support.design.widget.AppBarLayout><android.support.v4.view.ViewPagerandroid:id="@+id/container"android:layout_width="match_parent"android:layout_height="match_parent"app:layout_behavior="@string/appbar_scrolling_view_behavior" /></android.support.design.widget.CoordinatorLayout>
fragment.xml<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"><com.github.mikephil.charting.charts.PieChartandroid:id="@+id/chart1"android:layout_marginTop="100dp"android:layout_width="match_parent"android:layout_height="match_parent" /><TextViewandroid:id="@+id/tvXMax"android:layout_width="50dp"android:layout_height="wrap_content"android:layout_alignParentRight="true"android:layout_marginBottom="15dp"android:layout_marginRight="10dp"android:gravity="right"android:textAppearance="?android:attr/textAppearanceMedium" /><TextViewandroid:id="@+id/tvYMax"android:layout_width="50dp"android:layout_height="wrap_content"android:layout_alignParentRight="true"android:layout_marginBottom="15dp"android:layout_marginRight="10dp"android:gravity="right"android:textAppearance="?android:attr/textAppearanceMedium" /></RelativeLayout>
源码传送门:http://xiazai.jb51.net/201612/yuanma/piechart-master(jb51.net).rar
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