<HorizontalScrollView
        android:layout_width="match_parent"
        android:layout_height="300dp"
        android:scrollbars="none">

        <RelativeLayout
            android:id="@+id/rl_linechart"
            android:layout_width="wrap_content"
            android:layout_height="300dp" />
    </HorizontalScrollView>

/**
 * 自定义view，用canvas画出两条曲线、X轴坐标等等
 */

public class LineChartView extends View {

    /**
     * 第一条曲线的数字
     */
    private List<Integer> lineOneScore = new ArrayList<>();
    /**
     * 第二条曲线的数字
     */
    private List<Integer> lineTwoScore = new ArrayList<>();
    /**
     * x轴的文字
     */
    private List<String> xLineData = new ArrayList<>();
    /**
     * Y轴的数值
     */
    private List<Integer> yLineData = new ArrayList<>();
    /**
     * 坐标轴、坐标轴字体、线条的画笔
     */
    private Paint datePaint;
    /**
     * 第一条折线的画笔
     */
    private Paint lineOnePaint;
    /**
     * 第二条折线的画笔
     */
    private Paint lineTwoPaint;
    /**
     * 坐标轴、坐标轴字体、线条的颜色
     */
    private int dateColor = Color.parseColor("#636363");
    /**
     * 第一条折线的画笔
     */
    private int lineOneColor = Color.parseColor("#000000");
    /**
     * 第二条折线的画笔
     */
    private int lineTwoColor = Color.parseColor("#f9a13f");
    /**
     * 第一条折线的中间圆点
     */
    private Bitmap lineOneBitmap;
    /**
     * 第二条折线的中间圆点
     */
    private Bitmap lineTwoBitmap;


    private float tenDP;
    private Path path;


    public LineChartView(Context context, List<Integer> lineOneScore, List<Integer> lineTwoScore, List<String> xLineData, List<Integer> yLineData) {
        super(context);
        init(lineOneScore, lineTwoScore, xLineData, yLineData);
    }

    public void init(List<Integer> lineOneScore, List<Integer> lineTwoScore, List<String> xLineData, List<Integer> yLineData) {
        if (lineOneScore.size() == 0 || lineTwoScore.size() == 0 || xLineData.size() == 0 || yLineData.size() == 0)
            return;
        this.xLineData = xLineData;
        this.yLineData = yLineData;
        this.lineOneScore = lineOneScore;
        this.lineTwoScore = lineTwoScore;

        Resources resources = getResources();
        tenDP = resources.getDimension(R.dimen.magin_10);

        datePaint = new Paint();
        datePaint.setStrokeWidth(tenDP * 0.05f);
        datePaint.setTextSize(tenDP * 1.2f);
        datePaint.setColor(dateColor);

        lineOnePaint = new Paint();
        lineOnePaint.setStrokeWidth(tenDP * 0.1f);
        lineOnePaint.setTextSize(tenDP * 1.2f);
        lineOnePaint.setColor(lineOneColor);

        lineTwoPaint = new Paint();
        lineTwoPaint.setStrokeWidth(tenDP * 0.1f);
        lineTwoPaint.setTextSize(tenDP * 1.2f);
        lineTwoPaint.setColor(lineTwoColor);


        path = new Path();
        lineOneBitmap = BitmapFactory.decodeResource(getResources(),
                R.mipmap.ic_point_gray);
        lineTwoBitmap = BitmapFactory.decodeResource(getResources(),
                R.mipmap.ic_point_yellow);
        setLayoutParams(new ViewGroup.LayoutParams((int) (this.xLineData.size() * 6f * tenDP + 3.5f * tenDP), ViewGroup.LayoutParams.MATCH_PARENT));

    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        canvas.setDrawFilter(new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG));
        drawLineOne(canvas);
        drawLineTwo(canvas);
        drawDate(canvas);
        drawLine(canvas);
    }


    /**
     * 绘制时间
     *
     * @param c
     */
    public void drawDate(Canvas c) {

        for (int i = 0; i < xLineData.size(); i++) {
            c.drawText(xLineData.get(i), 6f * i * tenDP + 2.5f * tenDP, getHeight() - tenDP * 0.5f, datePaint);
        }
    }


    /**
     * 绘制线
     *
     * @param c
     */
    public void drawLine(Canvas c) {

        for (int i = 0; i < xLineData.size(); i++) {
            for (int k = 0; k < 7; k++) {
                c.drawLine(0, getHeight() - ((getHeight() - tenDP * 8.5f) * k) / 5 - tenDP * 2.0f, 2f * tenDP * xLineData.size() * 3.5f + 1.5f * tenDP,
                        getHeight() - ((getHeight() - tenDP * 8.5f) * k) / 5 - tenDP * 2.0f, datePaint);
            }
        }
    }

    /**
     * 绘制第一条折线
     */
    public void drawLineOne(Canvas c) {
        float x1, x2, y1, y2;
        for (int i = 0; i < lineOneScore.size() - 1; i++) {
            x1 = 6f * i * tenDP + tenDP * 4;
            y1 = getHeight() - lineOneScore.get(i) * (getHeight() - tenDP * 8.5f) / Collections.max(yLineData) - tenDP * 2.0f;
            x2 = 6f * (i + 1) * tenDP + +tenDP * 4f;
            y2 = getHeight() - lineOneScore.get(i + 1) * (getHeight() - tenDP * 8.5f) / Collections.max(yLineData) - tenDP * 2.0f;
            c.drawLine(x1, y1, x2, y2, lineOnePaint);
            path.lineTo(x1, y1);
            c.drawBitmap(lineOneBitmap,
                    x1 - lineOneBitmap.getWidth() / 2,
                    y1 - lineOneBitmap.getHeight() / 2, null);
            path.lineTo(x2, y2);
            path.lineTo(x2, getHeight());
            path.lineTo(0, getHeight());
            path.close();
            c.drawBitmap(lineOneBitmap,
                    x2 - lineOneBitmap.getWidth() / 2,
                    y2 - lineOneBitmap.getHeight() / 2, null);
        }
    }

    /**
     * 绘制第二条折线
     */
    public void drawLineTwo(Canvas c) {
        float x1, x2, y1, y2;
        for (int i = 0; i < lineTwoScore.size() - 1; i++) {
            x1 = 6f * i * tenDP + tenDP * 4;
            y1 = getHeight() - lineTwoScore.get(i) * (getHeight() - tenDP * 8.5f) / Collections.max(yLineData) - tenDP * 2.0f;
            x2 = 6f * (i + 1) * tenDP + +tenDP * 4f;
            y2 = getHeight() - lineTwoScore.get(i + 1) * (getHeight() - tenDP * 8.5f) / Collections.max(yLineData) - tenDP * 2.0f;
            c.drawLine(x1, y1, x2, y2, lineTwoPaint);
            path.lineTo(x1, y1);
            c.drawBitmap(lineTwoBitmap,
                    x1 - lineTwoBitmap.getWidth() / 2,
                    y1 - lineTwoBitmap.getHeight() / 2, null);
            path.lineTo(x2, y2);
            path.lineTo(x2, getHeight());
            path.lineTo(0, getHeight());
            path.close();
            c.drawBitmap(lineTwoBitmap,
                    x2 - lineTwoBitmap.getWidth() / 2,
                    y2 - lineTwoBitmap.getHeight() / 2, null);
        }
    }


}

  private void setView() {
        List<String> xLineDate = new ArrayList<>();
        List<Integer> yLineDate = new ArrayList<>();
        List<Integer> lineOneDate = new ArrayList<>();
        List<Integer> lineTwoDate = new ArrayList<>();
        int[] oneInt = {24,35,43,16,24,37,56};
        int[] twoInt = {64,15,23,46,54,47,26};
        int[] yInt = {10,20,30,40,50,60,70};
        String[] xString = {"周一","周二","周三","周四","周五","周六","周日"};
        for (int i = 0; i <oneInt.length ; i++) {
            xLineDate.add(xString[i]);
            yLineDate.add(yInt[i]);
            lineOneDate.add(oneInt[i]);
            lineTwoDate.add(twoInt[i]);
        }
        rlLinechart.addView(new LineChartView(this,lineOneDate,lineTwoDate,xLineDate,yLineDate));
    }

Copyright 2015-2019 dinus

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.