Android 实现会旋转的饼状统计图实例代码

maven { url "https://jitpack.io" } 

compile 'com.github.PhilJay:MPAndroidChart:v3.0.1'

package 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;  @Override  protected 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);  }  //fragment  public 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;    }    @Override    public 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 touch      mChart.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 styling      mChart.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 highlights      mChart.highlightValues(null);      mChart.invalidate();    }  }  //适配器  public class SectionsPagerAdapter extends FragmentPagerAdapter {    public SectionsPagerAdapter(FragmentManager fm) {      super(fm);    }    @Override    public Fragment getItem(int position) {      return PlaceholderFragment.newInstance(position + 1);    }    @Override    public int getCount() {      return 4;    }    //这个方法用于显示标题    @Override    public 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;    }  }}

<?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.AppBarLayout    android: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.Toolbar      android: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.TabLayout      android:id="@+id/tabs"      android:layout_width="match_parent"      android:layout_height="wrap_content" />  </android.support.design.widget.AppBarLayout>  <android.support.v4.view.ViewPager    android: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>

<?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.PieChart    android:id="@+id/chart1"    android:layout_marginTop="100dp"    android:layout_width="match_parent"    android:layout_height="match_parent" />  <TextView    android: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" />  <TextView    android: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>