//图表库implementation 'com.github.PhilJay:MPAndroidChart:v3.1.0'
X轴：XAxis Y轴：YAxis 图例：Legend 描述：Description 限制线：LimitLine 显示的视图：MarkerView (就是选择中的时候显示的样子)
饼图英文学名为Sector Graph，又名Pie Graph。常用于统计学模块。2D饼图为圆形，手画时，常用圆规作图。仅排列在工作表的一列或一行中的数据可以绘制到饼图中。饼图显示一个数据系列
package com.xxmassdeveloper.mpchartexample.notimportant;import android.Manifest;import android.content.pm.PackageManager;import android.graphics.Typeface;import android.os.Bundle;import androidx.annotation.NonNull;import androidx.annotation.Nullable;import com.google.android.material.snackbar.Snackbar;import androidx.appcompat.app.AppCompatActivity;import androidx.core.app.ActivityCompat;import android.view.View;import android.widget.Toast;import com.github.mikephil.charting.charts.Chart;import com.sbas.xueliapplication.R;/*** Base class of all Activities of the Demo Application.** @author Philipp Jahoda*/public abstract class DemoBase extends AppCompatActivity implements ActivityCompat.OnRequestPermissionsResultCallback {protected final String[] months = new String[] {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Okt", "Nov", "Dec"};protected final String[] parties = new String[] {"Party A", "Party B", "Party C", "Party D", "Party E", "Party F", "Party G", "Party H","Party I", "Party J", "Party K", "Party L", "Party M", "Party N", "Party O", "Party P","Party Q", "Party R", "Party S", "Party T", "Party U", "Party V", "Party W", "Party X","Party Y", "Party Z"};private static final int PERMISSION_STORAGE = 0;protected Typeface tfRegular;protected Typeface tfLight;@Overrideprotected void onCreate(@Nullable Bundle savedInstanceState) {super.onCreate(savedInstanceState);tfRegular = Typeface.createFromAsset(getAssets(), "OpenSans-Regular.ttf");tfLight = Typeface.createFromAsset(getAssets(), "OpenSans-Light.ttf");}protected float getRandom(float range, float start) {return (float) (Math.random() * range) + start;}@Overridepublic void onBackPressed() {super.onBackPressed();overridePendingTransition(R.anim.move_left_in_activity, R.anim.move_right_out_activity);}@Overridepublic void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {if (requestCode == PERMISSION_STORAGE) {if (grantResults.length == 1 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {saveToGallery();} else {Toast.makeText(getApplicationContext(), "Saving FAILED!", Toast.LENGTH_SHORT).show();}}}protected void requestStoragePermission(View view) {if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {Snackbar.make(view, "Write permission is required to save image to gallery", Snackbar.LENGTH_INDEFINITE).setAction(android.R.string.ok, new View.OnClickListener() {@Overridepublic void onClick(View v) {ActivityCompat.requestPermissions(DemoBase.this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, PERMISSION_STORAGE);}}).show();} else {Toast.makeText(getApplicationContext(), "Permission Required!", Toast.LENGTH_SHORT).show();ActivityCompat.requestPermissions(DemoBase.this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, PERMISSION_STORAGE);}}protected void saveToGallery(Chart chart, String name) {if (chart.saveToGallery(name + "_" + System.currentTimeMillis(), 70))Toast.makeText(getApplicationContext(), "Saving SUCCESSFUL!",Toast.LENGTH_SHORT).show();elseToast.makeText(getApplicationContext(), "Saving FAILED!", Toast.LENGTH_SHORT).show();}protected abstract void saveToGallery();}
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"><RelativeLayoutandroid:layout_width="222px"android:layout_height="400px"><com.github.mikephil.charting.charts.PieChartandroid:id="@+id/chart1"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_above="@+id/seekBar1" /><SeekBarandroid:id="@+id/seekBar2"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_alignParentBottom="true"android:layout_margin="8dp"android:layout_marginRight="5dp"android:layout_toLeftOf="@+id/tvYMax"android:max="200"android:paddingBottom="12dp"android:visibility="gone" /><SeekBarandroid:id="@+id/seekBar1"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_above="@+id/seekBar2"android:layout_margin="8dp"android:layout_marginRight="5dp"android:layout_marginBottom="35dp"android:layout_toLeftOf="@+id/tvXMax"android:max="25"android:paddingBottom="12dp"android:visibility="gone" /><TextViewandroid:id="@+id/tvXMax"android:layout_width="50dp"android:layout_height="wrap_content"android:layout_alignBottom="@+id/seekBar1"android:layout_alignParentRight="true"android:layout_marginRight="10dp"android:layout_marginBottom="15dp"android:gravity="right"android:text="@string/dash"android:textAppearance="?android:attr/textAppearanceMedium"android:visibility="gone" /><TextViewandroid:id="@+id/tvYMax"android:layout_width="50dp"android:layout_height="wrap_content"android:layout_alignBottom="@+id/seekBar2"android:layout_alignParentRight="true"android:layout_marginRight="10dp"android:layout_marginBottom="15dp"android:gravity="right"android:text="@string/dash"android:textAppearance="?android:attr/textAppearanceMedium"android:visibility="gone" /></RelativeLayout><LinearLayoutandroid:layout_marginTop="500px"android:layout_width="match_parent"android:layout_height="wrap_content"><Buttonandroid:id="@+id/actionToggleYValues"android:text="是否显示Y轴文字"android:layout_width="wrap_content"android:layout_height="wrap_content"/><Buttonandroid:id="@+id/actionToggleXValues"android:text="是否显示X轴文字"android:layout_width="wrap_content"android:layout_height="wrap_content"/><Buttonandroid:id="@+id/actionToggleIcons"android:text="是否显示Icons"android:layout_width="wrap_content"android:layout_height="wrap_content"/><Buttonandroid:id="@+id/actionTogglePercent"android:text="是否显示百分比"android:layout_width="wrap_content"android:layout_height="wrap_content"/><Buttonandroid:id="@+id/actionToggleMinAngles"android:text="是否显示最小角"android:layout_width="wrap_content"android:layout_height="wrap_content"/><Buttonandroid:id="@+id/actionToggleHole"android:text="是否显示中间洞"android:layout_width="wrap_content"android:layout_height="wrap_content"/></LinearLayout><LinearLayoutandroid:layout_marginTop="590px"android:layout_width="match_parent"android:layout_height="wrap_content"><Buttonandroid:id="@+id/actionToggleCurvedSlices"android:text="是否显示弯曲"android:layout_width="wrap_content"android:layout_height="wrap_content"/><Buttonandroid:id="@+id/actionDrawCenter"android:text="是否显示中间文字"android:layout_width="wrap_content"android:layout_height="wrap_content"/><Buttonandroid:id="@+id/actionToggleSpin"android:text="旋转动画"android:layout_width="wrap_content"android:layout_height="wrap_content"/><Buttonandroid:id="@+id/animateX"android:text="X轴动画"android:layout_width="wrap_content"android:layout_height="wrap_content"/><Buttonandroid:id="@+id/animateY"android:text="Y轴动画"android:layout_width="wrap_content"android:layout_height="wrap_content"/><Buttonandroid:id="@+id/animateXY"android:text="XY轴动画"android:layout_width="wrap_content"android:layout_height="wrap_content"/><Buttonandroid:id="@+id/actionSave"android:text="保存"android:layout_width="wrap_content"android:layout_height="wrap_content"/></LinearLayout></RelativeLayout>
package com.xxmassdeveloper.mpchartexample;import com.sbas.xueliapplication.R;import android.Manifest;import android.content.Intent;import android.content.pm.PackageManager;import android.graphics.Color;import android.graphics.Typeface;import .Uri;import android.os.Bundle;import androidx.core.content.ContextCompat;import android.text.SpannableString;import android.text.style.ForegroundColorSpan;import android.text.style.RelativeSizeSpan;import android.text.style.StyleSpan;import android.util.Log;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.WindowManager;import android.widget.Button;import android.widget.SeekBar;import android.widget.SeekBar.OnSeekBarChangeListener;import android.widget.TextView;import com.github.mikephil.charting.animation.Easing;import com.github.mikephil.charting.charts.PieChart;import com.github.ponents.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 com.github.mikephil.charting.utils.MPPointF;import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;import java.util.ArrayList;public class PieChartActivity extends DemoBase implements OnSeekBarChangeListener,OnChartValueSelectedListener,View.OnClickListener {private PieChart pieChart;private SeekBar seekBarX, seekBarY;private TextView tvX, tvY;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);setContentView(R.layout.activity_piechart);setTitle("PieChartActivity");tvX = findViewById(R.id.tvXMax);tvY = findViewById(R.id.tvYMax);seekBarX = findViewById(R.id.seekBar1);seekBarY = findViewById(R.id.seekBar2);seekBarX.setOnSeekBarChangeListener(this);seekBarY.setOnSeekBarChangeListener(this);pieChart = findViewById(R.id.chart1);pieChart.setUsePercentValues(true);pieChart.getDescription().setEnabled(false);pieChart.setExtraOffsets(5, 10, 5, 5);pieChart.setDragDecelerationFrictionCoef(0.95f);pieChart.setCenterTextTypeface(tfLight);pieChart.setCenterText(generateCenterSpannableText());pieChart.setDrawHoleEnabled(true);pieChart.setHoleColor(Color.WHITE);pieChart.setTransparentCircleColor(Color.WHITE);pieChart.setTransparentCircleAlpha(110);pieChart.setHoleRadius(58f);pieChart.setTransparentCircleRadius(61f);pieChart.setDrawCenterText(true);pieChart.setRotationAngle(0);// enable rotation of the chart by touchpieChart.setRotationEnabled(true);pieChart.setHighlightPerTapEnabled(true);// chart.setUnit(" €");// chart.setDrawUnitsInChart(true);// add a selection listenerpieChart.setOnChartValueSelectedListener(this);seekBarX.setProgress(5);seekBarY.setProgress(10);pieChart.animateY(1400, Easing.EaseInOutQuad);// chart.spin(2000, 0, 360);//设置顶部 什么颜色代表什么东西。Legend l = pieChart.getLegend();l.setVerticalAlignment(Legend.LegendVerticalAlignment.BOTTOM);l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.CENTER);l.setOrientation(Legend.LegendOrientation.HORIZONTAL);l.setDrawInside(true);l.setXEntrySpace(7f);l.setYEntrySpace(0f);l.setYOffset(0f);l.setWordWrapEnabled(true);// entry label stylingpieChart.setEntryLabelColor(Color.WHITE);pieChart.setEntryLabelTypeface(tfRegular);pieChart.setEntryLabelTextSize(12f);initButton();}private void initButton() {Button actionToggleYValues = findViewById(R.id.actionToggleYValues);actionToggleYValues.setOnClickListener(this::onClick);Button actionToggleXValues = findViewById(R.id.actionToggleXValues);actionToggleXValues.setOnClickListener(this::onClick);Button actionToggleIcons = findViewById(R.id.actionToggleIcons);actionToggleIcons.setOnClickListener(this::onClick);Button actionTogglePercent = findViewById(R.id.actionTogglePercent);actionTogglePercent.setOnClickListener(this::onClick);Button actionToggleMinAngles = findViewById(R.id.actionToggleMinAngles);actionToggleMinAngles.setOnClickListener(this::onClick);Button actionToggleHole = findViewById(R.id.actionToggleHole);actionToggleHole.setOnClickListener(this::onClick);Button actionToggleCurvedSlices = findViewById(R.id.actionToggleCurvedSlices);actionToggleCurvedSlices.setOnClickListener(this::onClick);Button actionDrawCenter = findViewById(R.id.actionDrawCenter);actionDrawCenter.setOnClickListener(this::onClick);Button actionToggleSpin = findViewById(R.id.actionToggleSpin);actionToggleSpin.setOnClickListener(this::onClick);Button animateX = findViewById(R.id.animateX);animateX.setOnClickListener(this::onClick);Button animateY = findViewById(R.id.animateY);animateY.setOnClickListener(this::onClick);Button animateXY = findViewById(R.id.animateXY);animateXY.setOnClickListener(this::onClick);Button actionSave = findViewById(R.id.actionSave);actionSave.setOnClickListener(this::onClick);}private void setData_count_range(int count, float range) {ArrayList<PieEntry> entries = new ArrayList<>();// NOTE: The order of the entries when being added to the entries array determines their position around the center of// the chart.for (int i = 0; i < count ; i++) {float v =(float) ((Math.random() * range) + range / 5);Log.e("tag",v+" setData_count_range");entries.add(new PieEntry(v,parties[i % parties.length],getResources().getDrawable(R.drawable.star)));}PieDataSet dataSet = new PieDataSet(entries, "Election Results");dataSet.setDrawIcons(false);dataSet.setSliceSpace(3f);dataSet.setIconsOffset(new MPPointF(0, 40));dataSet.setSelectionShift(5f);// add a lot of colorsArrayList<Integer> 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);//dataSet.setSelectionShift(0f);PieData data = new PieData(dataSet);data.setValueFormatter(new PercentFormatter());data.setValueTextSize(11f);data.setValueTextColor(Color.WHITE);data.setValueTypeface(tfLight);pieChart.setData(data);// undo all highlightspieChart.highlightValues(null);pieChart.invalidate();}@Overridepublic boolean onCreateOptionsMenu(Menu menu) { return true;}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {switch (item.getItemId()) {case R.id.viewGithub: {Intent i = new Intent(Intent.ACTION_VIEW);i.setData(Uri.parse("/PhilJay/MPAndroidChart/blob/master/MPChartExample/src/com/xxmassdeveloper/mpchartexample/PieChartActivity.java"));startActivity(i);break;}case R.id.actionToggleValues: {for (IDataSet<?> set : pieChart.getData().getDataSets())set.setDrawValues(!set.isDrawValuesEnabled());pieChart.invalidate();break;}case R.id.actionToggleIcons: {for (IDataSet<?> set : pieChart.getData().getDataSets())set.setDrawIcons(!set.isDrawIconsEnabled());pieChart.invalidate();break;}case R.id.actionToggleHole: {if (pieChart.isDrawHoleEnabled())pieChart.setDrawHoleEnabled(false);elsepieChart.setDrawHoleEnabled(true);pieChart.invalidate();break;}case R.id.actionToggleMinAngles: {if (pieChart.getMinAngleForSlices() == 0f)pieChart.setMinAngleForSlices(36f);elsepieChart.setMinAngleForSlices(0f);pieChart.notifyDataSetChanged();pieChart.invalidate();break;}case R.id.actionToggleCurvedSlices: {boolean toSet = !pieChart.isDrawRoundedSlicesEnabled() || !pieChart.isDrawHoleEnabled();pieChart.setDrawRoundedSlices(toSet);if (toSet && !pieChart.isDrawHoleEnabled()) {pieChart.setDrawHoleEnabled(true);}if (toSet && pieChart.isDrawSlicesUnderHoleEnabled()) {pieChart.setDrawSlicesUnderHole(false);}pieChart.invalidate();break;}case R.id.actionDrawCenter: {if (pieChart.isDrawCenterTextEnabled())pieChart.setDrawCenterText(false);elsepieChart.setDrawCenterText(true);pieChart.invalidate();break;}case R.id.actionToggleXValues: {pieChart.setDrawEntryLabels(!pieChart.isDrawEntryLabelsEnabled());pieChart.invalidate();break;}case R.id.actionTogglePercent:pieChart.setUsePercentValues(!pieChart.isUsePercentValuesEnabled());pieChart.invalidate();break;case R.id.animateX: {pieChart.animateX(1400);break;}case R.id.animateY: {pieChart.animateY(1400);break;}case R.id.animateXY: {pieChart.animateXY(1400, 1400);break;}case R.id.actionToggleSpin: {pieChart.spin(1000, pieChart.getRotationAngle(), pieChart.getRotationAngle() + 360, Easing.EaseInOutCubic);break;}case R.id.actionSave: {if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {saveToGallery();} else {requestStoragePermission(pieChart);}break;}}return true;}@Overridepublic void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {tvX.setText(String.valueOf(seekBarX.getProgress()));tvY.setText(String.valueOf(seekBarY.getProgress()));setData_count_range(seekBarX.getProgress(), seekBarY.getProgress());}@Overrideprotected void saveToGallery() {saveToGallery(pieChart, "PieChartActivity");}private SpannableString generateCenterSpannableText() {SpannableString s = new SpannableString("MPAndroidChart\ndeveloped by Philipp Jahoda");s.setSpan(new RelativeSizeSpan(1.7f), 0, 14, 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;}@Overridepublic void onValueSelected(Entry e, Highlight h) {if (e == null)return;Log.i("VAL SELECTED","Value: " + e.getY() + ", index: " + h.getX()+ ", DataSet index: " + h.getDataSetIndex());}@Overridepublic void onNothingSelected() {Log.i("PieChart", "nothing selected");}@Overridepublic void onStartTrackingTouch(SeekBar seekBar) {}@Overridepublic void onStopTrackingTouch(SeekBar seekBar) {}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.viewGithub: {Intent i = new Intent(Intent.ACTION_VIEW);i.setData(Uri.parse("/PhilJay/MPAndroidChart/blob/master/MPChartExample/src/com/xxmassdeveloper/mpchartexample/PieChartActivity.java"));startActivity(i);break;}case R.id.actionToggleYValues: {for (IDataSet<?> set : pieChart.getData().getDataSets())set.setDrawValues(!set.isDrawValuesEnabled());pieChart.invalidate();break;}case R.id.actionToggleIcons: {for (IDataSet<?> set : pieChart.getData().getDataSets())set.setDrawIcons(!set.isDrawIconsEnabled());pieChart.invalidate();break;}case R.id.actionToggleHole: {if (pieChart.isDrawHoleEnabled())pieChart.setDrawHoleEnabled(false);elsepieChart.setDrawHoleEnabled(true);pieChart.invalidate();break;}case R.id.actionToggleMinAngles: {if (pieChart.getMinAngleForSlices() == 0f)pieChart.setMinAngleForSlices(36f);elsepieChart.setMinAngleForSlices(0f);pieChart.notifyDataSetChanged();pieChart.invalidate();break;}case R.id.actionToggleCurvedSlices: {boolean toSet = !pieChart.isDrawRoundedSlicesEnabled() || !pieChart.isDrawHoleEnabled();pieChart.setDrawRoundedSlices(toSet);if (toSet && !pieChart.isDrawHoleEnabled()) {pieChart.setDrawHoleEnabled(true);}if (toSet && pieChart.isDrawSlicesUnderHoleEnabled()) {pieChart.setDrawSlicesUnderHole(false);}pieChart.invalidate();break;}case R.id.actionDrawCenter: {if (pieChart.isDrawCenterTextEnabled())pieChart.setDrawCenterText(false);elsepieChart.setDrawCenterText(true);pieChart.invalidate();break;}case R.id.actionToggleXValues: {pieChart.setDrawEntryLabels(!pieChart.isDrawEntryLabelsEnabled());pieChart.invalidate();break;}case R.id.actionTogglePercent:pieChart.setUsePercentValues(!pieChart.isUsePercentValuesEnabled());pieChart.invalidate();break;case R.id.animateX: {pieChart.animateX(1400);break;}case R.id.animateY: {pieChart.animateY(1400);break;}case R.id.animateXY: {pieChart.animateXY(1400, 1400);break;}case R.id.actionToggleSpin: {pieChart.spin(1000, pieChart.getRotationAngle(), pieChart.getRotationAngle() + 360, Easing.EaseInOutCubic);break;}case R.id.actionSave: {if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {saveToGallery();} else {requestStoragePermission(pieChart);}break;}}}}
