LineChartActivity1.java

package com.xxmassdeveloper.mpchartexample;

import android.graphics.Color;
import android.graphics.DashPathEffect;
import android.graphics.Typeface;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.support.v4.content.ContextCompat;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.WindowManager;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;
import android.widget.Toast;

import com.github.mikephil.charting.animation.Easing;
import com.github.mikephil.charting.charts.LineChart;
import com.github.mikephil.charting.components.Legend;
import com.github.mikephil.charting.components.Legend.LegendForm;
import com.github.mikephil.charting.components.LimitLine;
import com.github.mikephil.charting.components.LimitLine.LimitLabelPosition;
import com.github.mikephil.charting.components.XAxis;
import com.github.mikephil.charting.components.YAxis;
import com.github.mikephil.charting.data.Entry;
import com.github.mikephil.charting.data.LineData;
import com.github.mikephil.charting.data.LineDataSet;
import com.github.mikephil.charting.highlight.Highlight;
import com.github.mikephil.charting.interfaces.datasets.ILineDataSet;
import com.github.mikephil.charting.listener.ChartTouchListener;
import com.github.mikephil.charting.listener.OnChartGestureListener;
import com.github.mikephil.charting.listener.OnChartValueSelectedListener;
import com.github.mikephil.charting.utils.Utils;
import com.xxmassdeveloper.mpchartexample.custom.MyMarkerView;
import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;

import java.util.ArrayList;
import java.util.List;

public class LineChartActivity1 extends DemoBase implements OnSeekBarChangeListener,
        OnChartGestureListener, OnChartValueSelectedListener {

    private LineChart mChart;
    private SeekBar mSeekBarX, mSeekBarY;
    private TextView tvX, tvY;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.activity_linechart);

        tvX = (TextView) findViewById(R.id.tvXMax);
        tvY = (TextView) findViewById(R.id.tvYMax);

        mSeekBarX = (SeekBar) findViewById(R.id.seekBar1);
        mSeekBarY = (SeekBar) findViewById(R.id.seekBar2);

        mSeekBarX.setProgress(45);
        mSeekBarY.setProgress(100);

        mSeekBarY.setOnSeekBarChangeListener(this);
        mSeekBarX.setOnSeekBarChangeListener(this);

        mChart = (LineChart) findViewById(R.id.chart1);
        mChart.setOnChartGestureListener(this);
        mChart.setOnChartValueSelectedListener(this);
        mChart.setDrawGridBackground(false);

        // no description text
        mChart.setDescription("");
        mChart.setNoDataTextDescription("You need to provide data for the chart.");

        // enable touch gestures
        mChart.setTouchEnabled(true);

        // enable scaling and dragging
        mChart.setDragEnabled(true);
        mChart.setScaleEnabled(true);
        // mChart.setScaleXEnabled(true);
        // mChart.setScaleYEnabled(true);

        // if disabled, scaling can be done on x- and y-axis separately
        mChart.setPinchZoom(true);

        // set an alternative background color
        // mChart.setBackgroundColor(Color.GRAY);

        // create a custom MarkerView (extend MarkerView) and specify the layout
        // to use for it
        MyMarkerView mv = new MyMarkerView(this, R.layout.custom_marker_view);
        mv.setChartView(mChart); // For bounds control
        mChart.setMarker(mv); // Set the marker to the chart

        // x-axis limit line
        LimitLine llXAxis = new LimitLine(10f, "Index 10");
        llXAxis.setLineWidth(4f);
        llXAxis.enableDashedLine(10f, 10f, 0f);
        llXAxis.setLabelPosition(LimitLabelPosition.RIGHT_BOTTOM);
        llXAxis.setTextSize(10f);

        XAxis xAxis = mChart.getXAxis();
        xAxis.enableGridDashedLine(10f, 10f, 0f);
        //xAxis.setValueFormatter(new MyCustomXAxisValueFormatter());
        //xAxis.addLimitLine(llXAxis); // add x-axis limit line


        Typeface tf = Typeface.createFromAsset(getAssets(), "OpenSans-Regular.ttf");

        LimitLine ll1 = new LimitLine(150f, "Upper Limit");
        ll1.setLineWidth(4f);
        ll1.enableDashedLine(10f, 10f, 0f);
        ll1.setLabelPosition(LimitLabelPosition.RIGHT_TOP);
        ll1.setTextSize(10f);
        ll1.setTypeface(tf);

        LimitLine ll2 = new LimitLine(-30f, "Lower Limit");
        ll2.setLineWidth(4f);
        ll2.enableDashedLine(10f, 10f, 0f);
        ll2.setLabelPosition(LimitLabelPosition.RIGHT_BOTTOM);
        ll2.setTextSize(10f);
        ll2.setTypeface(tf);

        YAxis leftAxis = mChart.getAxisLeft();
        leftAxis.removeAllLimitLines(); // reset all limit lines to avoid overlapping lines
        leftAxis.addLimitLine(ll1);
        leftAxis.addLimitLine(ll2);
        leftAxis.setAxisMaximum(200f);
        leftAxis.setAxisMinimum(-50f);
        //leftAxis.setYOffset(20f);
        leftAxis.enableGridDashedLine(10f, 10f, 0f);
        leftAxis.setDrawZeroLine(false);

        // limit lines are drawn behind data (and not on top)
        leftAxis.setDrawLimitLinesBehindData(true);

        mChart.getAxisRight().setEnabled(false);

        //mChart.getViewPortHandler().setMaximumScaleY(2f);
        //mChart.getViewPortHandler().setMaximumScaleX(2f);

        // add data
        setData(45, 100);

//        mChart.setVisibleXRange(20);
//        mChart.setVisibleYRange(20f, AxisDependency.LEFT);
//        mChart.centerViewTo(20, 50, AxisDependency.LEFT);

        mChart.animateX(2500);
        //mChart.invalidate();

        // get the legend (only possible after setting data)
        Legend l = mChart.getLegend();

        // modify the legend ...
        // l.setPosition(LegendPosition.LEFT_OF_CHART);
        l.setForm(LegendForm.LINE);

        // // dont forget to refresh the drawing
        // mChart.invalidate();
    }

    @Override
    public void onWindowFocusChanged(boolean hasFocus) {
        super.onWindowFocusChanged(hasFocus);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.line, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        switch (item.getItemId()) {
            case R.id.actionToggleValues: {
                List<ILineDataSet> sets = mChart.getData()
                        .getDataSets();

                for (ILineDataSet iSet : sets) {

                    LineDataSet set = (LineDataSet) iSet;
                    set.setDrawValues(!set.isDrawValuesEnabled());
                }

                mChart.invalidate();
                break;
            }
            case R.id.actionToggleHighlight: {
                if(mChart.getData() != null) {
                    mChart.getData().setHighlightEnabled(!mChart.getData().isHighlightEnabled());
                    mChart.invalidate();
                }
                break;
            }
            case R.id.actionToggleFilled: {

                List<ILineDataSet> sets = mChart.getData()
                        .getDataSets();

                for (ILineDataSet iSet : sets) {

                    LineDataSet set = (LineDataSet) iSet;
                    if (set.isDrawFilledEnabled())
                        set.setDrawFilled(false);
                    else
                        set.setDrawFilled(true);
                }
                mChart.invalidate();
                break;
            }
            case R.id.actionToggleCircles: {
                List<ILineDataSet> sets = mChart.getData()
                        .getDataSets();

                for (ILineDataSet iSet : sets) {

                    LineDataSet set = (LineDataSet) iSet;
                    if (set.isDrawCirclesEnabled())
                        set.setDrawCircles(false);
                    else
                        set.setDrawCircles(true);
                }
                mChart.invalidate();
                break;
            }
            case R.id.actionToggleCubic: {
                List<ILineDataSet> sets = mChart.getData()
                        .getDataSets();

                for (ILineDataSet iSet : sets) {

                    LineDataSet set = (LineDataSet) iSet;
                    set.setMode(set.getMode() == LineDataSet.Mode.CUBIC_BEZIER
                            ? LineDataSet.Mode.LINEAR
                            :  LineDataSet.Mode.CUBIC_BEZIER);
                }
                mChart.invalidate();
                break;
            }
            case R.id.actionToggleStepped: {
                List<ILineDataSet> sets = mChart.getData()
                        .getDataSets();

                for (ILineDataSet iSet : sets) {

                    LineDataSet set = (LineDataSet) iSet;
                    set.setMode(set.getMode() == LineDataSet.Mode.STEPPED
                            ? LineDataSet.Mode.LINEAR
                            :  LineDataSet.Mode.STEPPED);
                }
                mChart.invalidate();
                break;
            }
            case R.id.actionToggleHorizontalCubic: {
                List<ILineDataSet> sets = mChart.getData()
                        .getDataSets();

                for (ILineDataSet iSet : sets) {

                    LineDataSet set = (LineDataSet) iSet;
                    set.setMode(set.getMode() == LineDataSet.Mode.HORIZONTAL_BEZIER
                            ? LineDataSet.Mode.LINEAR
                            :  LineDataSet.Mode.HORIZONTAL_BEZIER);
                }
                mChart.invalidate();
                break;
            }
            case R.id.actionTogglePinch: {
                if (mChart.isPinchZoomEnabled())
                    mChart.setPinchZoom(false);
                else
                    mChart.setPinchZoom(true);

                mChart.invalidate();
                break;
            }
            case R.id.actionToggleAutoScaleMinMax: {
                mChart.setAutoScaleMinMaxEnabled(!mChart.isAutoScaleMinMaxEnabled());
                mChart.notifyDataSetChanged();
                break;
            }
            case R.id.animateX: {
                mChart.animateX(3000);
                break;
            }
            case R.id.animateY: {
                mChart.animateY(3000, Easing.EasingOption.EaseInCubic);
                break;
            }
            case R.id.animateXY: {
                mChart.animateXY(3000, 3000);
                break;
            }
            case R.id.actionSave: {
                if (mChart.saveToPath("title" + System.currentTimeMillis(), "")) {
                    Toast.makeText(getApplicationContext(), "Saving SUCCESSFUL!",
                            Toast.LENGTH_SHORT).show();
                } else
                    Toast.makeText(getApplicationContext(), "Saving FAILED!", Toast.LENGTH_SHORT)
                            .show();

                // mChart.saveToGallery("title"+System.currentTimeMillis())
                break;
            }
        }
        return true;
    }

    @Override
    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {

        tvX.setText("" + (mSeekBarX.getProgress() + 1));
        tvY.setText("" + (mSeekBarY.getProgress()));

        setData(mSeekBarX.getProgress() + 1, mSeekBarY.getProgress());

        // redraw
        mChart.invalidate();
    }

    @Override
    public void onStartTrackingTouch(SeekBar seekBar) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onStopTrackingTouch(SeekBar seekBar) {
        // TODO Auto-generated method stub

    }

    private void setData(int count, float range) {

        ArrayList<Entry> values = new ArrayList<Entry>();

        for (int i = 0; i < count; i++) {

            float val = (float) (Math.random() * range) + 3;
            values.add(new Entry(i, val));
        }

        LineDataSet set1;

        if (mChart.getData() != null &&
                mChart.getData().getDataSetCount() > 0) {
            set1 = (LineDataSet)mChart.getData().getDataSetByIndex(0);
            set1.setValues(values);
            mChart.getData().notifyDataChanged();
            mChart.notifyDataSetChanged();
        } else {
            // create a dataset and give it a type
            set1 = new LineDataSet(values, "DataSet 1");

            // set the line to be drawn like this "- - - - - -"
            set1.enableDashedLine(10f, 5f, 0f);
            set1.enableDashedHighlightLine(10f, 5f, 0f);
            set1.setColor(Color.BLACK);
            set1.setCircleColor(Color.BLACK);
            set1.setLineWidth(1f);
            set1.setCircleRadius(3f);
            set1.setDrawCircleHole(false);
            set1.setValueTextSize(9f);
            set1.setDrawFilled(true);
            set1.setFormLineWidth(1f);
            set1.setFormLineDashEffect(new DashPathEffect(new float[]{10f, 5f}, 0f));
            set1.setFormSize(15.f);

            if (Utils.getSDKInt() >= 18) {
                // fill drawable only supported on api level 18 and above
                Drawable drawable = ContextCompat.getDrawable(this, R.drawable.fade_red);
                set1.setFillDrawable(drawable);
            }
            else {
                set1.setFillColor(Color.BLACK);
            }

            ArrayList<ILineDataSet> dataSets = new ArrayList<ILineDataSet>();
            dataSets.add(set1); // add the datasets

            // create a data object with the datasets
            LineData data = new LineData(dataSets);

            // set data
            mChart.setData(data);
        }
    }

    @Override
    public void onChartGestureStart(MotionEvent me, ChartTouchListener.ChartGesture lastPerformedGesture) {
        Log.i("Gesture", "START, x: " + me.getX() + ", y: " + me.getY());
    }

    @Override
    public void onChartGestureEnd(MotionEvent me, ChartTouchListener.ChartGesture lastPerformedGesture) {
        Log.i("Gesture", "END, lastGesture: " + lastPerformedGesture);

        // un-highlight values after the gesture is finished and no single-tap
        if(lastPerformedGesture != ChartTouchListener.ChartGesture.SINGLE_TAP)
            mChart.highlightValues(null); // or highlightTouch(null) for callback to onNothingSelected(...)
    }

    @Override
    public void onChartLongPressed(MotionEvent me) {
        Log.i("LongPress", "Chart longpressed.");
    }

    @Override
    public void onChartDoubleTapped(MotionEvent me) {
        Log.i("DoubleTap", "Chart double-tapped.");
    }

    @Override
    public void onChartSingleTapped(MotionEvent me) {
        Log.i("SingleTap", "Chart single-tapped.");
    }

    @Override
    public void onChartFling(MotionEvent me1, MotionEvent me2, float velocityX, float velocityY) {
        Log.i("Fling", "Chart flinged. VeloX: " + velocityX + ", VeloY: " + velocityY);
    }

    @Override
    public void onChartScale(MotionEvent me, float scaleX, float scaleY) {
        Log.i("Scale / Zoom", "ScaleX: " + scaleX + ", ScaleY: " + scaleY);
    }

    @Override
    public void onChartTranslate(MotionEvent me, float dX, float dY) {
        Log.i("Translate / Move", "dX: " + dX + ", dY: " + dY);
    }

    @Override
    public void onValueSelected(Entry e, Highlight h) {
        Log.i("Entry selected", e.toString());
        Log.i("LOWHIGH", "low: " + mChart.getLowestVisibleX() + ", high: " + mChart.getHighestVisibleX());
        Log.i("MIN MAX", "xmin: " + mChart.getXChartMin() + ", xmax: " + mChart.getXChartMax() + ", ymin: " + mChart.getYChartMin() + ", ymax: " + mChart.getYChartMax());
    }

    @Override
    public void onNothingSelected() {
        Log.i("Nothing selected", "Nothing selected.");
    }
}