Android图表库MPAndroidChart(六)饼状图 -折线百分比

来源：互联网发布：51单片机ad转换编辑：程序博客网时间：2024/05/17 02:16

应用

package com.fate.mpandroidchartfive;import android.graphics.Color;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.text.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.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.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) {        super.onCreate(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.getDescription().setEnabled(false);        mPieChart.setExtraOffsets(5, 10, 5, 5);        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);        // 添加一个选择监听器        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 = mPieChart.getLegend();        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.add(ColorTemplate.getHoloBlue());        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 : mPieChart.getData().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, mPieChart.getRotationAngle(), mPieChart.getRotationAngle() + 360, Easing.EasingOption                        .EaseInCubic);                break;        }    }}

布局

<?xml version="1.0" encoding="utf-8"?><LinearLayout    xmlns:android="http://schemas.android.com/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"/>    <!--还有显示描述等等-->    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal">        <Button            android:id="@+id/btn_show_percentage"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="显示百分比"/>        <Button            android:id="@+id/btn_show_type"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="是否铺满"/>        <Button            android:id="@+id/btn_anim_x"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="X轴动画"/>        <Button            android:id="@+id/btn_anim_y"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="Y轴动画"/>    </LinearLayout>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal">        <Button            android:id="@+id/btn_anim_xy"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="XY轴动画"/>        <Button            android:id="@+id/btn_show_center_text"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="显示中间文字"/>        <Button            android:id="@+id/btn_save_pic"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="保存画廊"/>        <Button            android:id="@+id/btn_anim_rotating"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="旋转动画"/>    </LinearLayout></LinearLayout>

http://blog.csdn.net/qq_26787115/article/details/53258500

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