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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 Axis-Drag scaling to a SciChartSurface using the YAxisDragModifier and XAxisDragModifier. ChartModifiers can be added to the ChartModifierCollection through the setChartModifiers() method.
Tips!
Drag modifiers can be used in Absolute mode (when YAxis.getAutoRange()=false) as well as Relative mode (when YAxis.getAutoRange()=true).
The behavior can be changed from Scale to Pan via the setDragMode() method. The AxisDargMode.Scale is the default mode.
The full source code for the Android Chart Drag Axis to Scale 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. 2011-2017. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales: sales@scichart.com
//
// DragAxisToScaleChartFragment.java is part of the SCICHART® Examples. Permission is hereby granted
// to modify, create derivative works, distribute and publish any part of this source
// code whether for commercial, private or personal use.
//
// The SCICHART® examples are distributed in the hope that they will be useful, but
// without any warranty. It is provided "AS IS" without warranty of any kind, either
// expressed or implied.
//******************************************************************************
package com.scichart.examples.fragments;
import android.app.Dialog;
import android.content.Context;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Spinner;
import com.daasuu.ei.Ease;
import com.daasuu.ei.EasingInterpolator;
import com.scichart.charting.ClipMode;
import com.scichart.charting.Direction2D;
import com.scichart.charting.model.dataSeries.XyDataSeries;
import com.scichart.charting.modifiers.ModifierGroup;
import com.scichart.charting.modifiers.XAxisDragModifier;
import com.scichart.charting.modifiers.YAxisDragModifier;
import com.scichart.charting.visuals.SciChartSurface;
import com.scichart.charting.visuals.axes.AxisAlignment;
import com.scichart.charting.visuals.axes.IAxis;
import com.scichart.charting.visuals.renderableSeries.FastLineRenderableSeries;
import com.scichart.charting.visuals.renderableSeries.FastMountainRenderableSeries;
import com.scichart.core.framework.UpdateSuspender;
import com.scichart.examples.R;
import com.scichart.examples.components.SpinnerStringAdapter;
import com.scichart.examples.data.DataManager;
import com.scichart.examples.data.DoubleSeries;
import com.scichart.examples.fragments.base.ExampleBaseFragment;
import com.scichart.examples.utils.EnumUtils;
import com.scichart.examples.utils.ItemSelectedListenerBase;
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;
import butterknife.BindView;
import static com.scichart.charting.modifiers.AxisDragModifierBase.AxisDragMode;
public class DragAxisToScaleChartFragment extends ExampleBaseFragment {
private XAxisDragModifier xAxisDragModifier;
private YAxisDragModifier yAxisDragModifier;
private AxisDragMode selectedDragMode = AxisDragMode.Scale;
private Direction2D selectedDirection = Direction2D.XyDirection;
@BindView(R.id.chart)
SciChartSurface surface;
@Override
public List<Widget> getToolbarItems() {
return new ArrayList<Widget>() {
{
add(new ImageViewWidget.Builder().setId(R.drawable.example_toolbar_settings).setListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
openSettingsDialog();
}
}).build());
}
};
}
@Override
protected int getLayoutId() {
return R.layout.example_single_chart_fragment;
}
@Override
protected void initExample() {
final IAxis xAxis = sciChartBuilder.newNumericAxis().withTextFormatting("0.0").withGrowBy(0.1, 0.1).withVisibleRange(3, 6).build();
final IAxis rightYAxis = sciChartBuilder.newNumericAxis().withAxisId("RightAxisId").withAxisAlignment(AxisAlignment.Right).withTextColor(0xFF279B27).withGrowBy(0.1, 0.1).build();
final IAxis leftYAxis = sciChartBuilder.newNumericAxis().withAxisId("LeftAxisId").withAxisAlignment(AxisAlignment.Left).withTextColor(0xFF4083B7).withGrowBy(0.1, 0.1).build();
final DoubleSeries fourierSeries = DataManager.getInstance().getFourierSeries(1.0, 0.1, 5000);
final DoubleSeries dampedSinewave = DataManager.getInstance().getDampedSinewave(1500, 3.0, 0.0, 0.005, 5000, 10);
final XyDataSeries<Double, Double> mountainDS = sciChartBuilder.newXyDataSeries(Double.class, Double.class).build();
final XyDataSeries<Double, Double> lineDS = sciChartBuilder.newXyDataSeries(Double.class, Double.class).build();
mountainDS.append(fourierSeries.xValues, fourierSeries.yValues);
lineDS.append(dampedSinewave.xValues, dampedSinewave.yValues);
final FastMountainRenderableSeries mountainRenderableSeries = sciChartBuilder.newMountainSeries().withDataSeries(mountainDS).withAreaFillColor(0x771964FF).withStrokeStyle(0xFF0944CF, 2f, true).withYAxisId("LeftAxisId").build();
final FastLineRenderableSeries lineRenderableSeries = sciChartBuilder.newLineSeries().withDataSeries(lineDS).withStrokeStyle(0xFF279B27, 2f, true).withYAxisId("RightAxisId").build();
UpdateSuspender.using(surface, new Runnable() {
@Override
public void run() {
Collections.addAll(surface.getXAxes(), xAxis);
Collections.addAll(surface.getYAxes(), leftYAxis, rightYAxis);
Collections.addAll(surface.getRenderableSeries(), mountainRenderableSeries, lineRenderableSeries);
xAxisDragModifier = new XAxisDragModifier();
xAxisDragModifier.setClipModeX(ClipMode.None);
yAxisDragModifier = new YAxisDragModifier();
ModifierGroup modifiers = sciChartBuilder.newModifierGroup()
.withModifier(xAxisDragModifier)
.withModifier(yAxisDragModifier)
.withZoomPanModifier().withReceiveHandledEvents(true).build()
.withZoomExtentsModifier().build()
.build();
Collections.addAll(surface.getChartModifiers(), modifiers);
sciChartBuilder.newAnimator(lineRenderableSeries).withSweepTransformation().withInterpolator(new EasingInterpolator(Ease.CUBIC_IN_OUT)).withDuration(3000).withStartDelay(350).start();
sciChartBuilder.newAnimator(mountainRenderableSeries).withScaleTransformation().withInterpolator(new EasingInterpolator(Ease.CUBIC_IN_OUT)).withDuration(3000).withStartDelay(350).start();
}
});
}
private void openSettingsDialog() {
final Dialog dialog = ViewSettingsUtil.createSettingsPopup(getActivity(), R.layout.example_drag_axis_to_scale_chart_layout_popup);
Context context = dialog.getContext();
final SpinnerStringAdapter axisDragModeAdapter = new SpinnerStringAdapter(context, EnumUtils.getEnumValuesArray(AxisDragMode.class));
final Spinner axisDragModeSpinner = (Spinner) dialog.findViewById(R.id.axis_drag_mode_spinner);
axisDragModeSpinner.setAdapter(axisDragModeAdapter);
axisDragModeSpinner.setSelection(axisDragModeAdapter.getPosition(String.valueOf(selectedDragMode)));
axisDragModeSpinner.setOnItemSelectedListener(new ItemSelectedListenerBase() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
selectedDragMode = AxisDragMode.valueOf(axisDragModeAdapter.getItem(position));
xAxisDragModifier.setDragMode(selectedDragMode);
yAxisDragModifier.setDragMode(selectedDragMode);
}
});
final SpinnerStringAdapter xyDirectionAdapter = new SpinnerStringAdapter(context, EnumUtils.getEnumValuesArray(Direction2D.class));
final Spinner directionSpinner = (Spinner) dialog.findViewById(R.id.direction_spinner);
directionSpinner.setAdapter(xyDirectionAdapter);
directionSpinner.setSelection(xyDirectionAdapter.getPosition(String.valueOf(selectedDirection)));
directionSpinner.setOnItemSelectedListener(new ItemSelectedListenerBase() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
selectedDirection = Direction2D.valueOf(xyDirectionAdapter.getItem(position));
updateAxesDragDirections(selectedDirection);
}
});
dialog.show();
}
private void updateAxesDragDirections(Direction2D direction) {
switch (direction) {
case XDirection:
xAxisDragModifier.setIsEnabled(true);
yAxisDragModifier.setIsEnabled(false);
break;
case YDirection:
xAxisDragModifier.setIsEnabled(false);
yAxisDragModifier.setIsEnabled(true);
break;
case XyDirection:
xAxisDragModifier.setIsEnabled(true);
yAxisDragModifier.setIsEnabled(true);
break;
}
}
}