MPAndroidChart 一行代码 实现 柱状图（1）

MPAndroidChart 一行代码 实现 饼状图（1）

导入 implementation 'com.github.PhilJay:MPAndroidChart:v3.0.3'

调用

public class DayReportActivity extends AppCompatActivity {

    private BarChart chart1 ,chart2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_day_report);

        initView();
    }

    private void initView() {

        chart1 = findViewById(R.id.chart1);
        chart2 = findViewById(R.id.chart2);

        //x 周默认输值 可用下面的x_value代替
        List<Float> x_number = new ArrayList<>();
        for (int i = 0; i < 10; i++) {
            x_number.add((float)i);
        }
        //y的值
        List<Float> y_value = new ArrayList<>();
        y_value.add((float)34);
        y_value.add((float)74);
        y_value.add((float)61);
        y_value.add((float)19);
        y_value.add((float)73);
        y_value.add((float)23);
        y_value.add((float)52);
        y_value.add((float)83);
        y_value.add((float)6);
        y_value.add((float)47);

        //x的值
        String[] x_value = {"A","B","C","D","E","F","G","H","I","J"};

        //单行柱状图  
        BarChartActivityOnlyUtils.init(DayReportActivity.this, chart1, x_number, y_value, "chart1", x_value);
        //对比性柱状图  
        BarChartActivityUtils.init(DayReportActivity.this, chart2, x_number, y_value, "chart2", x_value);
}

BarChartActivityOnlyUtils

package com.ts.policesituationj.mpandroidchars;

import android.content.Context;
import android.graphics.Color;
import android.util.Log;

import com.github.mikephil.charting.charts.BarChart;
import com.github.mikephil.charting.components.Legend;
import com.github.mikephil.charting.components.XAxis;
import com.github.mikephil.charting.components.YAxis;
import com.github.mikephil.charting.data.BarData;
import com.github.mikephil.charting.data.BarDataSet;
import com.github.mikephil.charting.data.BarEntry;
import com.github.mikephil.charting.formatter.IAxisValueFormatter;
import com.github.mikephil.charting.formatter.LargeValueFormatter;
import com.github.mikephil.charting.utils.ColorTemplate;

import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.List;

public class BarChartActivityOnlyUtils {

    protected static BarChart mChart;

    /**
     *
     * @param context
     * @param mCharts
     * @param xAxisValues     x_number
     * @param yAxisValues     y_value
     * @param label           标题
     * @param values          x_value
     */
    public static void init(Context context,
                            BarChart mCharts ,
                            List<Float> xAxisValues,
                            List<Float> yAxisValues,
                            String label,
                            String[] values){

        mChart = mCharts;
        mChart.setDrawBarShadow(false);
        mChart.setDrawValueAboveBar(true);
        mChart.getDescription().setEnabled(false);
        // if more than 60 entries are displayed in the chart, no values will be
        // drawn
        mChart.setMaxVisibleValueCount(60);
        // scaling can now only be done on x- and y-axis separately
        mChart.setPinchZoom(false);
        mChart.setDrawGridBackground(false);


        //自定义x轴显示

        XAxis xAxis = mChart.getXAxis();
        xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
        xAxis.setDrawGridLines(false);
        xAxis.setGranularity(1f); // only intervals of 1 day
        xAxis.setLabelCount(7);
        MyXFormatter formatter = new MyXFormatter(values);
        xAxis.setValueFormatter(formatter);
        xAxis.setLabelCount(xAxisValues.size() - 1, false);
        IAxisValueFormatter custom = new MyAxisValueFormatter();

        YAxis leftAxis = mChart.getAxisLeft();
        leftAxis.setLabelCount(0, false);
        leftAxis.setValueFormatter(custom);
        leftAxis.setPosition(YAxis.YAxisLabelPosition.OUTSIDE_CHART);
        leftAxis.setSpaceTop(15f);
        leftAxis.setAxisMinimum(0f); // this replaces setStartAtZero(true)

        YAxis rightAxis = mChart.getAxisRight();
        rightAxis.setDrawGridLines(false);
        rightAxis.setLabelCount(8, false);
        rightAxis.setValueFormatter(custom);
        rightAxis.setSpaceTop(15f);
        rightAxis.setAxisMinimum(0f); // this replaces setStartAtZero(true)

        Legend l = mChart.getLegend();
        l.setVerticalAlignment(Legend.LegendVerticalAlignment.BOTTOM);
        l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.LEFT);
        l.setOrientation(Legend.LegendOrientation.HORIZONTAL);
        l.setDrawInside(false);
        l.setForm(Legend.LegendForm.SQUARE);
        l.setFormSize(9f);
        l.setTextSize(11f);
        l.setXEntrySpace(4f);

        XYMarkerView mv = new XYMarkerView(context, formatter);
        mv.setChartView(mChart); // For bounds control
        mChart.setMarker(mv); // Set the marker to the chart

        ArrayList<BarEntry> yVals1 = new ArrayList<BarEntry>();
        ArrayList<BarEntry> yVals2 = new ArrayList<BarEntry>();
        for (int i = 0; i < 10; i++) {
            yVals1.add(new BarEntry(i, yAxisValues.get(i)));
            yVals2.add(new BarEntry(i, yAxisValues.get(i)+20));
        }

        BarDataSet set1;

        if (mChart.getData() != null &&
            mChart.getData().getDataSetCount() > 0) {
            set1 = (BarDataSet) mChart.getData().getDataSetByIndex(0);
            set1.setValues(yVals1);

            mChart.getData().notifyDataChanged();
            mChart.notifyDataSetChanged();
        } else {

            set1 = new BarDataSet(yVals1, "A");
            set1.setColors(ColorTemplate.MATERIAL_COLORS);

            BarData data = new BarData(set1);
            data.setValueFormatter(new LargeValueFormatter());

            mChart.setData(data);
        }
    }

}

需要辅助类

package com.ts.policesituationj.mpandroidchars;

import com.github.mikephil.charting.components.AxisBase;
import com.github.mikephil.charting.formatter.IAxisValueFormatter;

import java.text.DecimalFormat;

public class MyAxisValueFormatter implements IAxisValueFormatter
{

    private DecimalFormat mFormat;

    public MyAxisValueFormatter() {
        mFormat = new DecimalFormat("###,###,###,##0.0");
    }

    @Override
    public String getFormattedValue(float value, AxisBase axis) {
        return mFormat.format(value) + "";
    }
}

package com.ts.policesituationj.mpandroidchars;

import android.content.Context;
import android.widget.TextView;

import com.github.mikephil.charting.components.MarkerView;
import com.github.mikephil.charting.data.CandleEntry;
import com.github.mikephil.charting.data.Entry;
import com.github.mikephil.charting.highlight.Highlight;
import com.github.mikephil.charting.utils.MPPointF;
import com.github.mikephil.charting.utils.Utils;
import com.ts.policesituationj.R;

/**
 * Custom implementation of the MarkerView.
 *
 * @author Philipp Jahoda
 */
public class MyMarkerView extends MarkerView {

    private TextView tvContent;

    public MyMarkerView(Context context, int layoutResource) {
        super(context, layoutResource);

        tvContent = findViewById(R.id.tvContent);
    }

    // callbacks everytime the MarkerView is redrawn, can be used to update the
    // content (user-interface)
    @Override
    public void refreshContent(Entry e, Highlight highlight) {

        if (e instanceof CandleEntry) {

            CandleEntry ce = (CandleEntry) e;

            tvContent.setText("" + Utils.formatNumber(ce.getHigh(), 0, true));
        } else {

            tvContent.setText("" + Utils.formatNumber(e.getY(), 0, true));
        }

        super.refreshContent(e, highlight);
    }

    @Override
    public MPPointF getOffset() {
        return new MPPointF(-(getWidth() / 2), -getHeight());
    }
}

package com.ts.policesituationj.mpandroidchars;

import android.util.Log;

import com.github.mikephil.charting.components.AxisBase;
import com.github.mikephil.charting.formatter.IAxisValueFormatter;

public class MyXFormatter implements IAxisValueFormatter {

    private String[] mValues;

    public MyXFormatter(String[] values) {
        this.mValues = values;
    }
    private static final String TAG = "MyXFormatter";

    @Override
    public String getFormattedValue(float value, AxisBase axis) {
        Log.d(TAG, "----->getFormattedValue: "+value);
        return mValues[(int) value % mValues.length];
    }
}

package com.ts.policesituationj.mpandroidchars;

import android.content.Context;
import android.widget.TextView;

import com.github.mikephil.charting.components.MarkerView;
import com.github.mikephil.charting.data.Entry;
import com.github.mikephil.charting.formatter.IAxisValueFormatter;
import com.github.mikephil.charting.highlight.Highlight;
import com.github.mikephil.charting.utils.MPPointF;
import com.ts.policesituationj.R;

import java.text.DecimalFormat;

/**
 * Custom implementation of the MarkerView.
 *
 * @author Philipp Jahoda
 */
public class XYMarkerView extends MarkerView {

    private TextView tvContent;
    private IAxisValueFormatter xAxisValueFormatter;

    private DecimalFormat format;

    public XYMarkerView(Context context, IAxisValueFormatter xAxisValueFormatter) {
        super(context, R.layout.custom_marker_view);

        this.xAxisValueFormatter = xAxisValueFormatter;
        tvContent = findViewById(R.id.tvContent);
        format = new DecimalFormat("###.0");
    }

    // callbacks everytime the MarkerView is redrawn, can be used to update the
    // content (user-interface)
    @Override
    public void refreshContent(Entry e, Highlight highlight) {

        tvContent.setText("x: " + xAxisValueFormatter.getFormattedValue(e.getX(), null) + ", y: " + format.format(e.getY()));

        super.refreshContent(e, highlight);
    }

    @Override
    public MPPointF getOffset() {
        return new MPPointF(-(getWidth() / 2), -getHeight());
    }
}

一行代码 实现 MPAndroidChart 柱状图（2）
https://blog.csdn.net/a136447572/article/details/80438368