2021 3 13 健民体温 App第三阶段目标1

完成体温折线图的绘制，用hallochert制作，

package com.example.myapplication;

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;

import android.Manifest;
import android.app.Activity;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;


import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;

//import org.apache.poi.xssf.usermodel.XSSFCell;
//import org.apache.poi.xssf.usermodel.XSSFRow;
//import org.apache.poi.xssf.usermodel.XSSFSheet;
//import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;

import lecho.lib.hellocharts.gesture.ZoomType;
import lecho.lib.hellocharts.listener.LineChartOnValueSelectListener;
import lecho.lib.hellocharts.model.Axis;
import lecho.lib.hellocharts.model.AxisValue;
import lecho.lib.hellocharts.model.Line;
import lecho.lib.hellocharts.model.LineChartData;
import lecho.lib.hellocharts.model.PointValue;
import lecho.lib.hellocharts.model.ValueShape;
import lecho.lib.hellocharts.model.Viewport;
import lecho.lib.hellocharts.util.ChartUtils;
import lecho.lib.hellocharts.view.LineChartView;

public class MainActivity extends AppCompatActivity {
    private static final int REQUEST_EXTERNAL_STORAGE = 1;
    private static String[] PERMISSIONS_STORAGE = {
            Manifest.permission.READ_EXTERNAL_STORAGE,
            Manifest.permission.WRITE_EXTERNAL_STORAGE };
    private LineChartView chart;        //显示线条的自定义View
    private LineChartData data;          // 折线图封装的数据类
    private int numberOfLines = 1;         //线条的数量
    private int maxNumberOfLines = 1;     //最大的线条数据
    private int numberOfPoints = 12;     //点的数量
    float[][] randomNumbersTab = new float[maxNumberOfLines][numberOfPoints]; //二维数组，线的数量和点的数量
    private boolean hasAxes = true;       //是否有轴，x和y轴
    private boolean hasAxesNames = true;   //是否有轴的名字
    private boolean hasLines = true;       //是否有线（点和点连接的线）
    private boolean hasPoints = true;       //是否有点（每个值的点）
    private ValueShape shape = ValueShape.CIRCLE;    //点显示的形式，圆形，正方向，菱形
    private boolean isFilled = false;                //是否是填充
    private boolean hasLabels = false;               //每个点是否有名字
    private boolean isCubic = false;                 //是否是立方的，线条是直线还是弧线
    private boolean hasLabelForSelected = false;       //每个点是否可以选择（点击效果）
    private boolean pointsHaveDifferentColor;           //线条的颜色变换
    private boolean hasGradientToTransparent = false;      //是否有梯度的透明
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
        initData();
        initEvent();
    }
    private void initView() {
        //实例化
        chart = (LineChartView) findViewById(R.id.chart);
    }
    private void initData()
    {// Generate some random values.
        generateValues();   //设置四条线的值数据
        generateData();    //设置数据

        // Disable viewport recalculations, see toggleCubic() method for more info.
        chart.setViewportCalculationEnabled(false);

        chart.setZoomType(ZoomType.HORIZONTAL);//设置线条可以水平方向收缩，默认是全方位缩放
        resetViewport();   //设置折线图的显示大小
    }
    private void initEvent() {
        chart.setOnValueTouchListener(new ValueTouchListener());
    }

    /**
     * 图像显示大小
     */
    private void resetViewport() {
        // Reset viewport height range to (0,100)
        final Viewport v = new Viewport(chart.getMaximumViewport());
        v.bottom =0;
        v.top =50;
        v.left = 0;
        v.right = numberOfPoints - 1;
        chart.setMaximumViewport(v);
        chart.setCurrentViewport(v);
    }
    /**
     * 设置四条线条的数据
     */
    private void generateValues() {
        for (int i = 0; i < maxNumberOfLines; ++i) {
            for (int j = 0; j < numberOfPoints; ++j) {
                randomNumbersTab[i][j] = 100;
            }
        }
    }
    /**
     * 配置数据
     */
    private void generateData()
    {
        //存放线条对象的集合
        List<Line> lines = new ArrayList<Line>();
        //把数据设置到线条上面去
        for (int i = 0; i < numberOfLines; ++i) {
            List<PointValue> values = new ArrayList<PointValue>();
            for (int j = 0; j < numberOfPoints; ++j) {
                values.add(new PointValue(j, randomNumbersTab[i][j]));
            }
            Line line = new Line(values);
            line.setColor(ChartUtils.COLORS[i]);
            line.setShape(shape);
            line.setCubic(isCubic);
            line.setFilled(isFilled);
            line.setHasLabels(hasLabels);
            line.setHasLabelsOnlyForSelected(hasLabelForSelected);
            line.setHasLines(hasLines);
            line.setHasPoints(hasPoints);
//            line.setHasGradientToTransparent(hasGradientToTransparent);
            if (pointsHaveDifferentColor) {
                line.setPointColor(ChartUtils.COLORS[(i + 1) % ChartUtils.COLORS.length]);
            }
            lines.add(line);
        }
        data = new LineChartData(lines);
        if (hasAxes) {
            Axis axisX = new Axis();
            Axis axisY = new Axis().setHasLines(true);
            if (hasAxesNames)
            {
                axisX.setTextColor(Color.BLACK);//设置x轴字体的颜色
                axisY.setTextColor(Color.BLACK);//设置y轴字体的颜色
                axisX.setName("Axis X");
                axisY.setName("Axis Y");
            }
            data.setAxisXBottom(axisX);
            data.setAxisYLeft(axisY);
        } else {
            data.setAxisXBottom(null);
            data.setAxisYLeft(null);
        }
        data.setBaseValue(Float.NEGATIVE_INFINITY);
        chart.setLineChartData(data);
    }
    /**
     * 触摸监听类
     */
    private class ValueTouchListener implements LineChartOnValueSelectListener {

        @Override
        public void onValueSelected(int lineIndex, int pointIndex, PointValue value) {
            Toast.makeText(MainActivity.this, "Selected: " + value, Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onValueDeselected() {


        }

    }
//    public void makeexcel()
//    {
////        File file1 = new File("/data/data/com.example.seanfu/excel.xls");
////        if(file1.exists())
////        {
////            Toast.makeText(MainActivity.this,"存在",Toast.LENGTH_SHORT).show();
////        }else{
////            Toast.makeText(MainActivity.this,"不存在",Toast.LENGTH_SHORT).show();
////        }
//        try {
//            verifyStoragePermissions(MainActivity.this);
//
//            InputStream inputStream = new FileInputStream("data/data/com.example.myapplication/14天健康登记样表.xls");
//            if(inputStream==null)
//            {
//                Toast.makeText(MainActivity.this,"aaa",Toast.LENGTH_SHORT).show();
//            }else{
//                HSSFWorkbook hssfWorkbook= new HSSFWorkbook(inputStream);
//                HSSFSheet hssfSheet = hssfWorkbook.getSheetAt(0);
//                HSSFRow hssfRow = hssfSheet.getRow(1);
//                HSSFCell no = hssfRow.getCell(1);
//                no.setCellValue("石家庄铁道大学");
//                Toast.makeText(MainActivity.this,String.valueOf(no.getStringCellValue()),Toast.LENGTH_SHORT).show();
//                OutputStream fos = new FileOutputStream("data/data/com.example.myapplication/14天健康登记样表.xls");
//                hssfWorkbook.write(fos);
//                fos.flush();
//                fos.close();
//            }
//        } catch (FileNotFoundException e) {
//            e.printStackTrace();
//        } catch (IOException e) {
//            e.printStackTrace();
//        }
//    }
//    public static void verifyStoragePermissions(Activity activity) {
//        // Check if we have write permission
//        int permission = ActivityCompat.checkSelfPermission(activity,
//                Manifest.permission.WRITE_EXTERNAL_STORAGE);
//        if (permission != PackageManager.PERMISSION_GRANTED) {
//            // We don't have permission so prompt the user
//            ActivityCompat.requestPermissions(activity, PERMISSIONS_STORAGE,
//                    REQUEST_EXTERNAL_STORAGE);
//        }
//    }
}