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SciChart Android ships with ~90Â 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 SciChartSurface 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?
//******************************************************************************
// 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.drawing.utility.ColorUtil
import com.scichart.examples.R
import com.scichart.examples.data.RandomWalkGenerator
import com.scichart.examples.fragments.base.ExampleSingleChartBaseFragment
import com.scichart.examples.utils.ViewSettingsUtil
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) {
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(ColorUtil.argb(255, 9, 68, 27))
sweepAnimation { interpolator = DecelerateInterpolator(); duration = 2000 }
}
}
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()
}
}
//******************************************************************************
// 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.visuals.SciChartSurface;
import com.scichart.charting.visuals.axes.IAxis;
import com.scichart.charting.visuals.renderableSeries.FastLineRenderableSeries;
import com.scichart.core.framework.UpdateSuspender;
import com.scichart.data.model.DoubleRange;
import com.scichart.drawing.utility.ColorUtil;
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.ViewSettingsUtil;
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;
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) {
final IAxis xAxis = sciChartBuilder.newNumericAxis().build();
final IAxis yAxis = sciChartBuilder.newNumericAxis().withGrowBy(new DoubleRange(0.1d, 0.1d)).build();
DoubleSeries data = new RandomWalkGenerator(0).setBias(0.0001).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(ColorUtil.argb(255, 9, 68, 27), 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(new DecelerateInterpolator()).withDuration(2000).withStartDelay(350).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();
}
}