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]; } }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>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>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>效果图：
