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  • MPAndroid 的学习

    1.MPAndroid 的github的地址:

    https://github.com/PhilJay/MPAndroidChart#documentation

    2.使用步骤:

    •   在build.gradle中引入
    allprojects {
        repositories {
            google()
            jcenter()
            maven { url 'https://jitpack.io' }
        }
    }

    • 在build.gradle(app)上引入模块依赖
    dependencies {
    implementation 'com.github.PhilJay:MPAndroidChart:v3.1.0'
    }

    •  实现条形图线图
      •   布局,在布局里面引入LineChart
       <com.github.mikephil.charting.charts.LineChart
            android:id="@+id/linechart"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            />
      •   在activity中的实现

        

    public class LineActivity extends AppCompatActivity {
        private LineChart mLineChart;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_line);
            mLineChart = findViewById(R.id.linechart);
            initSetChartAction();
            initLineChartStyle();
        }
      //设置
        private void initSetChartAction() {
            mLineChart.setTouchEnabled(false);//设置是否可以触碰
            mLineChart.setDragEnabled(false);//设置不可拖拽
            mLineChart.setScaleEnabled(false);
            //mLineChart.setScaleXEnabled(false);
           // mLineChart.setScaleYEnabled(false);
            mLineChart.setPinchZoom(false); ////设置是否能扩大扩小
    
        }
      //数据
        private void initLineChartStyle() {
            List<ChartData> chartData = new ArrayList<ChartData>();
            List<Entry> entries = new ArrayList<Entry>();
            for (Integer i = 0; i < 10; i++) {
                float valueY = i;
                float valueX = i *5* new Random(10).nextFloat();
                entries.add(new Entry(valueX, valueY));
    
            }
         //线的数据集 LineDataSet dataSet
    = new LineDataSet(entries, "Label"); // add entries to dataset dataSet.setColor(Color.GRAY); dataSet.setValueTextColor(Color.BLUE); LineData lineData = new LineData(dataSet); mLineChart.setData(lineData); mLineChart.invalidate();//更新图表 } }

    数据的格式

    public class ChartData {
        private int ValueX;
        private float ValueY;
        public ChartData(int ValueX,float ValueY){
            this.ValueX=ValueX;
            this.ValueY = ValueY;
        }
        public int getValueX() {
            return ValueX;
        }
    
        public void setValueX(int valueX) {
            ValueX = valueX;
        }
    
        public float getValueY() {
            return ValueY;
        }
    
        public void setValueY(float valueY) {
            ValueY = valueY;
        }
    }

      •   更多的配置
     /**
         * 初始化图表
         */
        private void initChart(LineChart lineChart) {
    
            /***图表设置***/
            //是否展示网格线
            lineChart.setDrawGridBackground(false);
    
            //是否显示边界
            lineChart.setDrawBorders(true);
            //是否可以拖动
            lineChart.setDragEnabled(false);
            //是否有触摸事件
            lineChart.setTouchEnabled(true);
            lineChart.setGridBackgroundColor(R.color.lightgray);//设置网格背景应与绘制的颜色
            //设置XY轴动画效果
            lineChart.animateY(2500);
            lineChart.animateX(1500);
    
    
            /***XY轴的设置***/
            YAxis leftYAxis = mLineChart.getAxisLeft();
           // YAxis rightYaxis = mLineChart.getAxisRight();
            XAxis  xAxis = mLineChart.getXAxis();
            xAxis.setDrawGridLines(false);
           // rightYaxis.setDrawGridLines(false);
            leftYAxis.setDrawGridLines(true);
            //X轴设置显示位置在底部
            xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
            xAxis.setAxisMinimum(0f);
            xAxis.setGranularity(1f);
            xAxis.setTextColor(Color.WHITE);
            //保证Y轴从0开始,不然会上移一点
            leftYAxis.setAxisMinimum(0f);
            //rightYaxis.setAxisMinimum(0f);
            leftYAxis.setTextColor(Color.WHITE);
            //rightYaxis.setDrawGridLines(false);
    
            /***折线图例 标签 设置***/
            Legend legend = lineChart.getLegend();
            //设置显示类型,LINE CIRCLE SQUARE EMPTY 等等 多种方式,查看LegendForm 即可
            legend.setForm(Legend.LegendForm.CIRCLE);
            legend.setTextColor(Color.WHITE);
            legend.setTextSize(12f);
            //显示位置 左下方
            legend.setVerticalAlignment(Legend.LegendVerticalAlignment.BOTTOM);
            legend.setHorizontalAlignment(Legend.LegendHorizontalAlignment.LEFT);
            legend.setOrientation(Legend.LegendOrientation.HORIZONTAL);
            //是否绘制在图表里面
            legend.setDrawInside(false);
    
        }

     //在创建好了LineDataSet之后进行数据的设置,文字,边框等样式   

    // 每一个LineDataSet代表一条线
     public void initLineDataSet(LineDataSet lineDataSet, int color, LineDataSet.Mode mode) {
            lineDataSet.setColor(color);
            lineDataSet.setCircleColor(color);
            lineDataSet.setLineWidth(1f);
            lineDataSet.setCircleRadius(3f);
            lineDataSet.setDrawValues(false); // 是否在点上绘制Value
            //设置曲线值的圆点是实心还是空心
            lineDataSet.setDrawCircleHole(false);
            lineDataSet.setValueTextSize(10f);
            //设置折线图填充
            lineDataSet.setDrawFilled(true);
            lineDataSet.setFormLineWidth(1f);
            lineDataSet.setFormSize(15.f);
            if (mode == null) {
                //设置曲线展示为圆滑曲线(如果不设置则默认折线)
                lineDataSet.setMode(LineDataSet.Mode.CUBIC_BEZIER);
            } else {
                lineDataSet.setMode(mode);
            }
        }

    //添加一个line

     /**
         * 添加曲线
         */
        public void addLine(List<EnergyData> dataList, String name, int color) {
            List<Entry> entries = new ArrayList<>();
            for (int i = 0; i < dataList.size(); i++) {
                Entry entry = new Entry(i,  Float.parseFloat(dataList.get(i).getValue()));
                entries.add(entry);
            }
            // 每一个LineDataSet代表一条线
            LineDataSet lineDataSet = new LineDataSet(entries, name);
            initLineDataSet(lineDataSet, color, LineDataSet.Mode.CUBIC_BEZIER);
            mLineChart.getLineData().addDataSet(lineDataSet); // 添加曲线
            mLineChart.invalidate();
        }
    

      

    • 柱状图
      •   布局
     <com.github.mikephil.charting.charts.BarChart
            android:id="@+id/barchart"
            android:layout_width="match_parent"
            android:layout_height="match_parent"/>
      •   activity的实例
    public class BarActivity extends AppCompatActivity {
        private BarChart mBarChart;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_bar);
            mBarChart = findViewById(R.id.barchart);
            List<ChartData> chartData = new ArrayList<ChartData>();
            List<BarEntry> entries = new ArrayList<BarEntry>();
            for (Integer i = 0; i < 10; i++) {
                float valueY = i;
                float valueX = i *5* new Random(10).nextFloat();
                entries.add(new BarEntry(valueX, valueY));
    
            }
            BarDataSet dataSet = new BarDataSet(entries, "Label"); // add entries to dataset
            dataSet.setColor(Color.GRAY);
            dataSet.setValueTextColor(Color.BLUE);
            BarData barData = new BarData(dataSet);
            mBarChart.setData(barData);
            mBarChart.invalidate();
    
        }
    }

    •  饼图
      •   布局
      <com.github.mikephil.charting.charts.PieChart
            android:id="@+id/piechart"
            android:layout_width="match_parent"
            android:layout_height="match_parent"/>
      •   activity的写法
    public class PieActivity extends AppCompatActivity {
    
        private PieChart mPieChart;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_pie);
            mPieChart = findViewById(R.id.piechart);
    
            //大小
            ArrayList<PieEntry> sizes=new ArrayList<PieEntry>();
            sizes.add(new PieEntry(10,"used"));
            sizes.add(new PieEntry(90,"left"));
            //颜色
            ArrayList<Integer> colors=new ArrayList<Integer>();
            colors.add(Color.parseColor("#FFBB33"));
            colors.add(Color.parseColor("#CCCCCC"));
    
            PieDataSet pieDataSet=new PieDataSet(sizes,"");//参数:颜色栏显示颜色目录、
            pieDataSet.setColors(colors);
    
            PieData pieData=new PieData(pieDataSet);
            mPieChart.setData(pieData);
            mPieChart.invalidate();
        }
    }
      •   效果图

    其他的设置功能:

    /**
         * 初始化图表
         */
        private void initPieChart(PieChart pieChart){
            pieChart.setHoleRadius(60f);//半径    
            pieChart.setTransparentCircleRadius(40f);// 半透明圈    
            pieChart.setDrawCenterText(true);//饼状图中间可以添加文字    
            pieChart.setDrawHoleEnabled(true);
            pieChart.setRotationAngle(90);// 初始旋转角度    
            pieChart.setRotationEnabled(true);// 可以手动旋转    
            pieChart.setUsePercentValues(true);//显示成百分比  
            Legend legend_pie = pieChart.getLegend();
            legend_pie.setVerticalAlignment(Legend.LegendVerticalAlignment.TOP);
            legend_pie.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT);
            legend_pie.setOrientation(Legend.LegendOrientation.VERTICAL);
            legend_pie.setTextColor(Color.WHITE);
            legend_pie.setDrawInside(false);
            legend_pie.setXEntrySpace(7f);
            legend_pie.setYEntrySpace(0f);
            legend_pie.setYOffset(0f);
            pieChart.animateXY(1000, 1000);//设置动画
        }
    

      //数据的设置

     /**
         * 设置饼状图
         *
         * @param name   饼状图分类的名字
         * @param data   数值
         * @param colors 颜色集合
         */
        public void setPieChart(List<String> name, List<Float> data, List<Integer> colors) {
            List<PieEntry> yValue = new ArrayList<>();
            for (int i = 0; i < data.size(); i++) {
                PieEntry entry = new PieEntry(data.get(i), name.get(i));
                yValue.add(entry);
            }
            PieDataSet set = new PieDataSet(yValue, "");
            set.setDrawValues(true);
            set.setValueTextSize(12);
            set.setColors(colors);
            set.setValueTextColor(Color.WHITE);
    
            PieData datapie= new PieData(set);
            mPieChart.setData(datapie);
            mPieChart.invalidate(); // refresh
        }
    

      

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  • 原文地址:https://www.cnblogs.com/xuqp/p/11699754.html
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