Back to project page line-chart-view.
The source code is released under:
MIT License
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package org.hogel.android.linechartview; //from w ww. ja v a 2 s . com import android.content.Context; import android.text.format.DateFormat; import java.util.ArrayList; import java.util.List; public class DateLineChartView extends LineChartView { private static final long HALF_DAY = 12 * 60 * 60 * 1000; private static final long A_DAY = 24 * 60 * 60 * 1000; public DateLineChartView(Context context) { this(context, new ArrayList<Point>()); } public DateLineChartView(Context context, List<Point> points) { this(context, points, new LineChartStyle()); } public DateLineChartView(Context context, List<Point> points, LineChartStyle lineChartStyle) { super(context, points, lineChartStyle); } public DateLineChartView(Context context, LineChartStyle lineChartStyle) { super(context, new ArrayList<Point>(), lineChartStyle); } @Override protected String formatXLabel(long x) { if (lineChartStyle.getXLabelFormatter() != null) { return lineChartStyle.getXLabelFormatter().format(x); } return DateFormat.format("yyyy/M/d", x).toString(); } @Override public long getMaxX() { if (manualMaxX != null) { return manualMaxX; } return getRawMaxX() + HALF_DAY; } @Override public long getRawMinX() { if (points.isEmpty()) { return (System.currentTimeMillis() / A_DAY - 7) * A_DAY; } return super.getRawMinX(); } @Override public long getRawMaxX() { if (points.isEmpty()) { return (System.currentTimeMillis() / A_DAY) * A_DAY; } return super.getRawMaxX(); } @Override public long getMinY() { if (manualMinY != null) { return manualMinY; } return 0; } @Override public long getXGridUnit() { if (manualXGridUnit != null) { return manualXGridUnit; } return A_DAY; } @Override protected long calcMinGridValue(long min, long gridUnit) { return min; } }