Android图表库MPAndroidChart——来点不一样的，正负堆叠条形图

Posted 2020-08-20 刘某人程序员

android图表库MPAndroidChart(十二)——来点不一样的，正负堆叠条形图

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接上篇，今天要说的，和上篇的类似，只是方向是有相反的两面，我们先看下效果

实际上这样就导致了我们的代码是比较类似的，先来看下我们的基本实现

一.基本实现

布局还是那个布局，只不过是横向的了

  <com.github.mikephil.charting.charts.HorizontalBarChart
        android:id="@+id/mHorizontalBarChart"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"/>

而初始化这些也都是大同小异

      //正负堆叠条形图
        mHorizontalBarChart = (HorizontalBarChart) findViewById(R.id.mHorizontalBarChart);

        mHorizontalBarChart.setOnChartValueSelectedListener(this);
        mHorizontalBarChart.setDrawGridBackground(false);
        mHorizontalBarChart.getDescription().setEnabled(false);

        // 扩展现在只能分别在x轴和y轴
        mHorizontalBarChart.setPinchZoom(false);

        mHorizontalBarChart.setDrawBarShadow(false);
        mHorizontalBarChart.setDrawValueAboveBar(true);
        mHorizontalBarChart.setHighlightFullBarEnabled(false);

        mHorizontalBarChart.getAxisLeft().setEnabled(false);
        mHorizontalBarChart.getAxisRight().setAxisMaximum(25f);
        mHorizontalBarChart.getAxisRight().setAxisMinimum(-25f);
        mHorizontalBarChart.getAxisRight().setDrawGridLines(false);
        mHorizontalBarChart.getAxisRight().setDrawZeroLine(true);
        mHorizontalBarChart.getAxisRight().setLabelCount(7, false);
        mHorizontalBarChart.getAxisRight().setValueFormatter(new CustomFormatter());
        mHorizontalBarChart.getAxisRight().setTextSize(9f);

        XAxis xAxis = mHorizontalBarChart.getXAxis();
        xAxis.setPosition(XAxis.XAxisPosition.BOTH_SIDED);
        xAxis.setDrawGridLines(false);
        xAxis.setDrawAxisLine(false);
        xAxis.setTextSize(9f);
        xAxis.setAxisMinimum(0f);
        xAxis.setAxisMaximum(110f);
        xAxis.setCenterAxisLabels(true);
        xAxis.setLabelCount(12);
        xAxis.setGranularity(10f);
        //日期格式化
        xAxis.setValueFormatter(new IAxisValueFormatter() {

            private DecimalFormat format = new DecimalFormat("###");

            @Override
            public String getFormattedValue(float value, AxisBase axis) {
                return format.format(value) + "-" + format.format(value + 10);
            }

            @Override
            public int getDecimalDigits() {
                return 0;
            }
        });

        Legend l = mHorizontalBarChart.getLegend();
        l.setVerticalAlignment(Legend.LegendVerticalAlignment.BOTTOM);
        l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT);
        l.setOrientation(Legend.LegendOrientation.HORIZONTAL);
        l.setDrawInside(false);
        l.setFormSize(8f);
        l.setFormToTextSpace(4f);
        l.setXEntrySpace(6f);

        // 重要:当使用负值在堆叠酒吧,总是确保-值数组中的第一个
        ArrayList<BarEntry> yValues = new ArrayList<BarEntry>();
        yValues.add(new BarEntry(5, new float[]{-10, 10}));
        yValues.add(new BarEntry(15, new float[]{-12, 13}));
        yValues.add(new BarEntry(25, new float[]{-15, 15}));
        yValues.add(new BarEntry(35, new float[]{-17, 17}));
        yValues.add(new BarEntry(45, new float[]{-19, 20}));
        yValues.add(new BarEntry(55, new float[]{-19, 19}));
        yValues.add(new BarEntry(65, new float[]{-16, 16}));
        yValues.add(new BarEntry(75, new float[]{-13, 14}));
        yValues.add(new BarEntry(85, new float[]{-10, 11}));
        yValues.add(new BarEntry(95, new float[]{-5, 6}));
        yValues.add(new BarEntry(105, new float[]{-1, 2}));

        BarDataSet set = new BarDataSet(yValues, "全国人口普查");
        set.setValueFormatter(new CustomFormatter());
        set.setValueTextSize(7f);
        set.setAxisDependency(YAxis.AxisDependency.RIGHT);
        set.setColors(new int[]{Color.rgb(99, 67, 72), Color.rgb(14, 181, 136)});
        set.setStackLabels(new String[]{"男人", "女人"});

        String[] xLabels = new String[]{"0-10", "10-20", "20-30", "30-40", "40-50", "50-60", "60-70", "70-80", "80-90", "90-100", "100+"};

        BarData data = new BarData(set);
        data.setBarWidth(8.5f);
        mHorizontalBarChart.setData(data);
        mHorizontalBarChart.invalidate();

这里我并没有写setData的方法，直接就模拟了一些数据，可以看出，这个图标是异常的简单，当我们运行之后就可以知道，这个实现的效果和上图的效果是一致的

二.显示顶点值

三.x轴动画

四.y轴动画

五.xy轴动画

六.显示边框

现在我把源码贴上

activity_statkedbar_negative.xml

<?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.HorizontalBarChart
        android:id="@+id/mHorizontalBarChart"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"/>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">


        <Button
            android:id="@+id/btn_show_values"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="顶点显示值"/>

        <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"/>

        <Button
            android:id="@+id/btn_anim_xy"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="XY轴动画"/>


    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">


        <Button
            android:id="@+id/btn_save_pic"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="保存到相册"/>

        <Button
            android:id="@+id/btn_auto_mix_max"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="自动最大最小值"/>

        <Button
            android:id="@+id/btn_actionToggleHighlight"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="高亮显示"/>

        <Button
            android:id="@+id/btn_show_border"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="显示边框"/>

    </LinearLayout>

</LinearLayout>

实际上比较类似，可以看下代码

StackedBarActivityNegative

public class StackedBarActivityNegative extends BaseActivity implements OnChartValueSelectedListener,View.OnClickListener {

    private HorizontalBarChart mHorizontalBarChart;

    //显示顶点值
    private Button btn_show_values;
    //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;
    //切换自动最大最小值
    private Button btn_auto_mix_max;
    //高亮显示
    private Button btn_actionToggleHighlight;
    //显示边框
    private Button btn_show_border;


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

        initView();
    }

    //初始化View
    private void initView() {

        //基本控件
        btn_show_values = (Button) findViewById(R.id.btn_show_values);
        btn_show_values.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_auto_mix_max = (Button) findViewById(R.id.btn_auto_mix_max);
        btn_auto_mix_max.setOnClickListener(this);
        btn_actionToggleHighlight = (Button) findViewById(R.id.btn_actionToggleHighlight);
        btn_actionToggleHighlight.setOnClickListener(this);
        btn_show_border = (Button) findViewById(R.id.btn_show_border);
        btn_show_border.setOnClickListener(this);

        //正负堆叠条形图
        mHorizontalBarChart = (HorizontalBarChart) findViewById(R.id.mHorizontalBarChart);

        mHorizontalBarChart.setOnChartValueSelectedListener(this);
        mHorizontalBarChart.setDrawGridBackground(false);
        mHorizontalBarChart.getDescription().setEnabled(false);

        // 扩展现在只能分别在x轴和y轴
        mHorizontalBarChart.setPinchZoom(false);

        mHorizontalBarChart.setDrawBarShadow(false);
        mHorizontalBarChart.setDrawValueAboveBar(true);
        mHorizontalBarChart.setHighlightFullBarEnabled(false);

        mHorizontalBarChart.getAxisLeft().setEnabled(false);
        mHorizontalBarChart.getAxisRight().setAxisMaximum(25f);
        mHorizontalBarChart.getAxisRight().setAxisMinimum(-25f);
        mHorizontalBarChart.getAxisRight().setDrawGridLines(false);
        mHorizontalBarChart.getAxisRight().setDrawZeroLine(true);
        mHorizontalBarChart.getAxisRight().setLabelCount(7, false);
        mHorizontalBarChart.getAxisRight().setValueFormatter(new CustomFormatter());
        mHorizontalBarChart.getAxisRight().setTextSize(9f);

        XAxis xAxis = mHorizontalBarChart.getXAxis();
        xAxis.setPosition(XAxis.XAxisPosition.BOTH_SIDED);
        xAxis.setDrawGridLines(false);
        xAxis.setDrawAxisLine(false);
        xAxis.setTextSize(9f);
        xAxis.setAxisMinimum(0f);
        xAxis.setAxisMaximum(110f);
        xAxis.setCenterAxisLabels(true);
        xAxis.setLabelCount(12);
        xAxis.setGranularity(10f);
        //日期格式化
        xAxis.setValueFormatter(new IAxisValueFormatter() {

            private DecimalFormat format = new DecimalFormat("###");

            @Override
            public String getFormattedValue(float value, AxisBase axis) {
                return format.format(value) + "-" + format.format(value + 10);
            }

            @Override
            public int getDecimalDigits() {
                return 0;
            }
        });

        Legend l = mHorizontalBarChart.getLegend();
        l.setVerticalAlignment(Legend.LegendVerticalAlignment.BOTTOM);
        l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT);
        l.setOrientation(Legend.LegendOrientation.HORIZONTAL);
        l.setDrawInside(false);
        l.setFormSize(8f);
        l.setFormToTextSpace(4f);
        l.setXEntrySpace(6f);

        // 重要:当使用负值在堆叠酒吧,总是确保-值数组中的第一个
        ArrayList<BarEntry> yValues = new ArrayList<BarEntry>();
        yValues.add(new BarEntry(5, new float[]{-10, 10}));
        yValues.add(new BarEntry(15, new float[]{-12, 13}));
        yValues.add(new BarEntry(25, new float[]{-15, 15}));
        yValues.add(new BarEntry(35, new float[]{-17, 17}));
        yValues.add(new BarEntry(45, new float[]{-19, 20}));
        yValues.add(new BarEntry(55, new float[]{-19, 19}));
        yValues.add(new BarEntry(65, new float[]{-16, 16}));
        yValues.add(new BarEntry(75, new float[]{-13, 14}));
        yValues.add(new BarEntry(85, new float[]{-10, 11}));
        yValues.add(new BarEntry(95, new float[]{-5, 6}));
        yValues.add(new BarEntry(105, new float[]{-1, 2}));

        BarDataSet set = new BarDataSet(yValues, "全国人口普查");
        set.setValueFormatter(new CustomFormatter());
        set.setValueTextSize(7f);
        set.setAxisDependency(YAxis.AxisDependency.RIGHT);
        set.setColors(new int[]{Color.rgb(99, 67, 72), Color.rgb(14, 181, 136)});
        set.setStackLabels(new String[]{"男人", "女人"});

        String[] xLabels = new String[]{"0-10", "10-20", "20-30", "30-40", "40-50", "50-60", "60-70", "70-80", "80-90", "90-100", "100+"};

        BarData data = new BarData(set);
        data.setBarWidth(8.5f);
        mHorizontalBarChart.setData(data);
        mHorizontalBarChart.invalidate();
    }

    @Override
    public void onValueSelected(Entry e, Highlight h) {

    }

    @Override
    public void onNothingSelected() {

    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            //显示顶点值
            case R.id.btn_show_values:
                for (IDataSet set : mHorizontalBarChart.getData().getDataSets())
                    set.setDrawValues(!set.isDrawValuesEnabled());

                mHorizontalBarChart.invalidate();
                break;
            //x轴动画
            case R.id.btn_anim_x:
                mHorizontalBarChart.animateX(3000);
                break;
            //y轴动画
            case R.id.btn_anim_y:
                mHorizontalBarChart.animateY(3000);
                break;
            //xy轴动画
            case R.id.btn_anim_xy:
                mHorizontalBarChart.animateXY(3000, 3000);
                break;
            //保存到sd卡
            case R.id.btn_save_pic:
                if (mHorizontalBarChart.saveToGallery("title" + System.currentTimeMillis(), 50)) {
                    Toast.makeText(getApplicationContext(), "保存成功",
                            Toast.LENGTH_SHORT).show();
                } else
                    Toast.makeText(getApplicationContext(), "保存失败",
                            Toast.LENGTH_SHORT).show();
                break;
            //切换自动最大最小值
            case R.id.btn_auto_mix_max:
                mHorizontalBarChart.setAutoScaleMinMaxEnabled(!mHorizontalBarChart.isAutoScaleMinMaxEnabled());
                mHorizontalBarChart.notifyDataSetChanged();
                break;
            //高亮显示
            case R.id.btn_actionToggleHighlight:
                if (mHorizontalBarChart.getData() != null) {
                    mHorizontalBarChart.getData().setHighlightEnabled(
                            !mHorizontalBarChart.getData().isHighlightEnabled());
                    mHorizontalBarChart.invalidate();
                }
                break;
            //显示边框
            case R.id.btn_show_border:
                for (IBarDataSet set : mHorizontalBarChart.getData().getDataSets())
                    ((BarDataSet) set).setBarBorderWidth(set.getBarBorderWidth() == 1.f ? 0.f : 1.f);
                mHorizontalBarChart.invalidate();
                break;
        }
    }
}

好了，这个图表就是这么简单，到这里就结束了

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