Android Chart - Examples
SciChart Android ships with ~90 Android Chart Examples which you can browse, play with, view the source-code and even export each SciChart Android Chart Example to a stand-alone Android Studio project. All of this is possible with the new and improved SciChart Android Examples Suite, which ships as part of our Android Charts SDK.
Showcases how to add zooming to a Android Chart Control using the RubberBandXyZoomModifier, part of the ChartModifier API. It allows zooming in to a particular chart area by selecting it with a rectangle, which can be drawn with a finger. ChartModifiers can be added to the ChartModifierCollection through the setChartModifiers() method.
Tips!
The RubberBandXyZoomModifier may be restricted in the X-Axis only or unbounded. It zooms to the exact rectangle you draw. The rectangle may be styled.
Also try to double-tap to zoom to extents. This feature is provided by the ZoomExtentsModifier.
The full source code for the Android Chart Drag Area to Zoom example is included below (Scroll down!).
Did you know you can also view the source code from one of the following sources as well?
- Clone the SciChart.Android.Examples from Github.
- Or, view source and export each example to an Android Studio project from the Java version of the SciChart Android Examples app.
- Also the SciChart Android Trial contains the full source for the examples (link below).
Kotlin: DragAreaToZoomFragment.kt
View source code//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2021. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales: sales@scichart.com
//
// DragAreaToZoomFragment.kt is part of SCICHART®, High Performance Scientific Charts
// For full terms and conditions of the license, see http://www.scichart.com/scichart-eula/
//
// This source code is protected by international copyright law. Unauthorized
// reproduction, reverse-engineering, or distribution of all or any portion of
// this source code is strictly prohibited.
//
// This source code contains confidential and proprietary trade secrets of
// SciChart Ltd., and should at no time be copied, transferred, sold,
// distributed or made available without express written permission.
//******************************************************************************
package com.scichart.examples.fragments.examples2d.zoomAndPanAChart.kt
import android.view.animation.DecelerateInterpolator
import com.scichart.charting.modifiers.RubberBandXyZoomModifier
import com.scichart.charting.visuals.SciChartSurface
import com.scichart.data.model.DoubleRange
import com.scichart.examples.R
import com.scichart.examples.data.RandomWalkGenerator
import com.scichart.examples.fragments.base.ExampleSingleChartBaseFragment
import com.scichart.examples.utils.Constant
import com.scichart.examples.utils.ViewSettingsUtil
import com.scichart.examples.utils.interpolator.DefaultInterpolator
import com.scichart.examples.utils.scichartExtensions.*
import com.scichart.examples.utils.widgetgeneration.ImageViewWidget
import com.scichart.examples.utils.widgetgeneration.Widget
class DragAreaToZoomFragment : ExampleSingleChartBaseFragment() {
private lateinit var rubberBandXyZoomModifier: RubberBandXyZoomModifier
override fun showDefaultModifiersInToolbar(): Boolean = false
override fun getToolbarItems(): List<Widget> = ArrayList<Widget>().apply {
add(ImageViewWidget.Builder().setId(R.drawable.example_toolbar_settings).setListener { openSettingsDialog() }.build())
}
override fun initExample(surface: SciChartSurface) {
surface.theme = R.style.SciChart_NavyBlue
val data = RandomWalkGenerator(0).setBias(0.0001).getRandomWalkSeries(10000)
surface.suspendUpdates {
xAxes { numericAxis() }
yAxes { numericAxis { growBy = DoubleRange(0.1, 0.1) } }
renderableSeries {
fastLineRenderableSeries {
xyDataSeries<Double, Double> { append(data.xValues, data.yValues) }
strokeStyle = SolidPenStyle(0xFF47bde6)
sweepAnimation {
interpolator = DefaultInterpolator.getInterpolator()
duration = Constant.ANIMATION_DURATION
startDelay = Constant.ANIMATION_START_DELAY
}
}
}
chartModifiers {
zoomExtentsModifier()
rubberBandXyZoomModifier {
isXAxisOnly = true
receiveHandledEvents = true
rubberBandXyZoomModifier = this
}
}
}
}
private fun openSettingsDialog() {
val dialog = ViewSettingsUtil.createSettingsPopup(activity, R.layout.example_drag_area_to_zoom_popop_layout)
ViewSettingsUtil.setUpSwitchCompat(dialog, R.id.zoom_x_axis_only_checkbox, rubberBandXyZoomModifier.isXAxisOnly) { _, isChecked -> rubberBandXyZoomModifier.isXAxisOnly = isChecked }
ViewSettingsUtil.setUpSwitchCompat(dialog, R.id.zoom_extents_y_axis_checkbox, rubberBandXyZoomModifier.zoomExtentsY) { _, isChecked -> rubberBandXyZoomModifier.zoomExtentsY = isChecked }
ViewSettingsUtil.setUpSwitchCompat(dialog, R.id.use_animation_checkbox, rubberBandXyZoomModifier.isAnimated) { _, isChecked -> rubberBandXyZoomModifier.isAnimated = isChecked }
dialog.show()
}
}Java: DragAreaToZoomFragment.java
View source code//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2021. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales: sales@scichart.com
//
// DragAreaToZoomFragment.java is part of SCICHART®, High Performance Scientific Charts
// For full terms and conditions of the license, see http://www.scichart.com/scichart-eula/
//
// This source code is protected by international copyright law. Unauthorized
// reproduction, reverse-engineering, or distribution of all or any portion of
// this source code is strictly prohibited.
//
// This source code contains confidential and proprietary trade secrets of
// SciChart Ltd., and should at no time be copied, transferred, sold,
// distributed or made available without express written permission.
//******************************************************************************
package com.scichart.examples.fragments.examples2d.zoomAndPanAChart;
import android.app.Dialog;
import android.view.animation.DecelerateInterpolator;
import androidx.annotation.NonNull;
import com.scichart.charting.model.dataSeries.IXyDataSeries;
import com.scichart.charting.modifiers.RubberBandXyZoomModifier;
import com.scichart.charting.numerics.labelProviders.LabelProviderBase;
import com.scichart.charting.visuals.SciChartSurface;
import com.scichart.charting.visuals.axes.AutoRange;
import com.scichart.charting.visuals.axes.IAxis;
import com.scichart.charting.visuals.axes.INumericAxis;
import com.scichart.charting.visuals.renderableSeries.FastLineRenderableSeries;
import com.scichart.core.framework.UpdateSuspender;
import com.scichart.core.utility.ComparableUtil;
import com.scichart.data.model.DoubleRange;
import com.scichart.examples.R;
import com.scichart.examples.data.DoubleSeries;
import com.scichart.examples.data.RandomWalkGenerator;
import com.scichart.examples.fragments.base.ExampleSingleChartBaseFragment;
import com.scichart.examples.utils.Constant;
import com.scichart.examples.utils.ViewSettingsUtil;
import com.scichart.examples.utils.interpolator.DefaultInterpolator;
import com.scichart.examples.utils.widgetgeneration.ImageViewWidget;
import com.scichart.examples.utils.widgetgeneration.Widget;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
class RangeDependantLabelProvider extends LabelProviderBase<INumericAxis> {
RangeDependantLabelProvider() {
super(INumericAxis.class);
}
@Override
public CharSequence formatLabel(double dataValue) {
if (ComparableUtil.toDouble(this.axis.getVisibleRange().getDiff()) > 1000) {
return String.format("%.1fK", dataValue / 1000.0);
} else {
return String.format("%.0f", dataValue);
}
}
@Override
public CharSequence formatCursorLabel(double dataValue) {
return String.format("%.0f", dataValue);
}
@Override
public CharSequence formatLabel(Comparable dataValue) {
final double doubleValue = ComparableUtil.toDouble(dataValue);
return this.formatLabel(doubleValue);
}
@Override
public CharSequence formatCursorLabel(Comparable dataValue) {
if(dataValue != null){
final double doubleValue = ComparableUtil.toDouble(dataValue);
return formatCursorLabel(doubleValue);
} else {
return "";
}
}
}
public class DragAreaToZoomFragment extends ExampleSingleChartBaseFragment {
private RubberBandXyZoomModifier rubberBandXyZoomModifier;
@Override
public boolean showDefaultModifiersInToolbar() {
return false;
}
@NonNull
@Override
public List<Widget> getToolbarItems() {
return new ArrayList<Widget>() {{
add(new ImageViewWidget.Builder().setId(R.drawable.example_toolbar_settings).setListener(v -> openSettingsDialog()).build());
}};
}
@Override
protected void initExample(@NonNull SciChartSurface surface) {
surface.setTheme(R.style.SciChart_NavyBlue);
final IAxis xAxis = sciChartBuilder.newNumericAxis().build();
final IAxis yAxis = sciChartBuilder.newNumericAxis().withLabelProvider(new RangeDependantLabelProvider())
.withAutoRangeMode(AutoRange.Always)
.withGrowBy(new DoubleRange(0.1d, 0.1d)).build();
DoubleSeries data = new RandomWalkGenerator(0).setBias(0.1).getRandomWalkSeries(10000);
final IXyDataSeries<Double, Double> dataSeries = sciChartBuilder.newXyDataSeries(Double.class, Double.class).build();
dataSeries.append(data.xValues, data.yValues);
final FastLineRenderableSeries rSeries = sciChartBuilder.newLineSeries().withDataSeries(dataSeries).withStrokeStyle(0xFF47bde6, 1, true).build();
rubberBandXyZoomModifier = new RubberBandXyZoomModifier();
rubberBandXyZoomModifier.setIsXAxisOnly(true);
rubberBandXyZoomModifier.setReceiveHandledEvents(true);
UpdateSuspender.using(surface, () -> {
Collections.addAll(surface.getXAxes(), xAxis);
Collections.addAll(surface.getYAxes(), yAxis);
Collections.addAll(surface.getRenderableSeries(), rSeries);
Collections.addAll(surface.getChartModifiers(), sciChartBuilder.newModifierGroup()
.withZoomExtentsModifier().build()
.withModifier(rubberBandXyZoomModifier)
.build());
sciChartBuilder.newAnimator(rSeries).withSweepTransformation().withInterpolator(DefaultInterpolator.getInterpolator()).withDuration(Constant.ANIMATION_DURATION).withStartDelay(Constant.ANIMATION_START_DELAY).start();
});
}
private void openSettingsDialog() {
final Dialog dialog = ViewSettingsUtil.createSettingsPopup(getActivity(), R.layout.example_drag_area_to_zoom_popop_layout);
ViewSettingsUtil.setUpSwitchCompat(dialog, R.id.zoom_x_axis_only_checkbox, rubberBandXyZoomModifier.getIsXAxisOnly(), (buttonView, isChecked) -> rubberBandXyZoomModifier.setIsXAxisOnly(isChecked));
ViewSettingsUtil.setUpSwitchCompat(dialog, R.id.zoom_extents_y_axis_checkbox, rubberBandXyZoomModifier.getZoomExtentsY(), (buttonView, isChecked) -> rubberBandXyZoomModifier.setZoomExtentsY(isChecked));
ViewSettingsUtil.setUpSwitchCompat(dialog, R.id.use_animation_checkbox, rubberBandXyZoomModifier.getIsAnimated(), (buttonView, isChecked) -> rubberBandXyZoomModifier.setIsAnimated(isChecked));
dialog.show();
}
}
