hellocharts-android图表库之柱状图：ColunmChartView_android columnchartview

现在项目中又用到了柱状图来统计最近一周的设备操作信息数量，还是边学习边记录个DEMO。

public class ColumnChartActivity extends AppCompatActivity {
    //柱状图控件
    private ColumnChartView column_chart_view;
    //统计图数据
    private ColumnChartData data;
    //数据标志
    private List<String> week;
    //模拟数据
    private List<Float> testData;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_column_chart);
        column_chart_view = (ColumnChartView) findViewById(R.id.column_chart_view);
        testData = new ArrayList<>();
        for (int i = 0; i < 7; i++) {
            testData.add(i * 2 + 5f);
        }
        setHistoryChart(testData, Color.parseColor("#F1C704"), column_chart_view);
    }

    /**
     * @param columnDatas :每一条柱子上代表的数量，columnColor:柱子颜色，charView：柱形图控件
     * @description 历史记录柱形图数据填充
     * @author ldm
     * @time 2017/5/23 11:03
     */
    private void setHistoryChart(List<Float> columnDatas, int columnColor, ColumnChartView charView) {
        week = new ArrayList<>();
        for (int i = 6; i >= 0; i--) {
            week.add(getWeekDays(i));
        }
        // 使用的 7列，每列1个subcolumn。
        int numSubcolumns = 1;
        int numColumns = 7;
        //定义一个圆柱对象集合
        List<Column> columns = new ArrayList<Column>();
        //子列数据集合
        List<SubcolumnValue> values;

        List<AxisValue> axisValues = new ArrayList<AxisValue>();
        //遍历列数numColumns
        for (int i = 0; i < numColumns; ++i) {
            values = new ArrayList<SubcolumnValue>();
            //遍历每一列的每一个子列
            for (int j = 0; j < numSubcolumns; ++j) {
                //为每一柱图添加颜色和数值
                float f = columnDatas.get(i);
                values.add(new SubcolumnValue(f, columnColor));
            }
            //创建Column对象
            Column column = new Column(values);
            ColumnChartValueFormatter chartValueFormatter = new SimpleColumnChartValueFormatter(0);
            column.setFormatter(chartValueFormatter);
            //是否有数据标注
            column.setHasLabels(true);
            //是否是点击圆柱才显示数据标注
            column.setHasLabelsOnlyForSelected(false);
            columns.add(column);
            //给x轴坐标设置描述
            axisValues.add(new AxisValue(i).setLabel(week.get(i)));
        }
        //创建一个带有之前圆柱对象column集合的ColumnChartData
        data = new ColumnChartData(columns);
        data.setValueLabelTextSize(8);
        data.setValueLabelBackgroundColor(Color.parseColor("#00000000"));
//        data.setValueLabelTypeface(Typeface.DEFAULT);// 设置数据文字样式
        data.setValueLabelBackgroundEnabled(true);
        data.setValueLabelBackgroundAuto(false);
        //定义x轴y轴相应参数
        Axis axisX = new Axis();
        Axis axisY = new Axis().setHasLines(true);
        axisY.setName("数量");//轴名称
        axisY.hasLines();//是否显示网格线
        axisY.setTextColor(Color.parseColor("#ffffff"));//颜色
        axisX.hasLines();
        axisX.setTextColor(Color.parseColor("#C9C9C9"));
        axisX.setValues(axisValues);
        axisX.setTextSize(10);
        axisX.setHasSeparationLine(false);
        //把X轴Y轴数据设置到ColumnChartData 对象中
        data.setAxisXBottom(axisX);
        data.setAxisYLeft(axisY);
        //给表填充数据，显示出来
        charView.setInteractive(false);
        charView.setColumnChartData(data);
    }

    /**
     * @description 获取最近七天的星期
     * @author ldm
     * @time 2017/5/23 10:30
     */
    private String getWeekDays(int days) {
        if (days == 0) {
            return getString(R.string.today);
        }
        String[] weekDays = getResources().getStringArray(R.array.cms_week);
        Calendar cal = Calendar.getInstance();
        cal.add(Calendar.DATE, -days);
        Date monday = cal.getTime();
        cal.setTime(monday);
        int w = cal.get(Calendar.DAY_OF_WEEK) - 1;
        if (w < 0)
            w = 0;
        return weekDays[w];
    }

}
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布局文件：

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="300dp"
        android:padding="10dp"
        android:layout_marginTop="150dp"
        android:background="#5e677f"
        >

    <TextView
            android:id="@+id/column_title"
            android:layout_width="72dp"
            android:layout_alignParentLeft="true"
            android:layout_centerInParent="true"
            android:layout_height="wrap_content"
            android:text="柱状统计图示例"
            android:textSize="15sp"
            android:textColor="#FFFFFF"
            />


    <lecho.lib.hellocharts.view.ColumnChartView
            android:id="@+id/column_chart_view"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:layout_toRightOf="@id/column_title"
            android:layout_margin="8dp"
            ></lecho.lib.hellocharts.view.ColumnChartView>
</RelativeLayout>
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res/values/strings.xml:

<resources>
    <string name="monday">星期一</string>
    <string name="tuesday">星期二</string>
    <string name="wednesday">星期三</string>
    <string name="thursday">星期四</string>
    <string name="friday">星期五</string>
    <string name="saturday">星期六</string>
    <string name="sunday">星期日</string>
    <string name="today">今天</string>
</resources>
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res/values/arrays.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string-array name="cms_week">
        <item>@string/sunday</item>
        <item>@string/monday</item>
        <item>@string/tuesday</item>
        <item>@string/wednesday</item>
        <item>@string/thursday</item>
        <item>@string/friday</item>
        <item>@string/saturday</item>
    </string-array>
</resources>
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效果图：