package com.android.stockapp.ui.mpchartexample; import android.Manifest; import android.content.Intent; import android.content.pm.PackageManager; import android.graphics.Color; import android.net.Uri; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.WindowManager; import android.widget.SeekBar; import android.widget.SeekBar.OnSeekBarChangeListener; import android.widget.TextView; import androidx.core.content.ContextCompat; import com.android.stockapp.R; import com.android.stockapp.ui.mpchartexample.notimportant.DemoBase; import com.github.mikephil.charting.charts.LineChart; import com.github.mikephil.charting.components.Legend; import com.github.mikephil.charting.components.XAxis; import com.github.mikephil.charting.components.YAxis; import com.github.mikephil.charting.components.YAxis.AxisDependency; 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.formatter.ValueFormatter; import com.github.mikephil.charting.interfaces.datasets.ILineDataSet; import com.github.mikephil.charting.utils.ColorTemplate; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List; import java.util.Locale; import java.util.concurrent.TimeUnit; public class LineChartTime extends DemoBase implements OnSeekBarChangeListener { private LineChart chart; private SeekBar seekBarX; private TextView tvX; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); setContentView(R.layout.activity_linechart_time); setTitle("LineChartTime"); tvX = findViewById(R.id.tvXMax); seekBarX = findViewById(R.id.seekBar1); seekBarX.setOnSeekBarChangeListener(this); chart = findViewById(R.id.chart1); // no description text chart.getDescription().setEnabled(false); // enable touch gestures chart.setTouchEnabled(true); chart.setDragDecelerationFrictionCoef(0.9f); // enable scaling and dragging chart.setDragEnabled(true); chart.setScaleEnabled(true); chart.setDrawGridBackground(false); chart.setHighlightPerDragEnabled(true); // set an alternative background color chart.setBackgroundColor(Color.WHITE); chart.setViewPortOffsets(0f, 0f, 0f, 0f); // add data seekBarX.setProgress(100); // get the legend (only possible after setting data) Legend l = chart.getLegend(); l.setEnabled(false); XAxis xAxis = chart.getXAxis(); xAxis.setPosition(XAxis.XAxisPosition.TOP_INSIDE); xAxis.setTypeface(tfLight); xAxis.setTextSize(10f); xAxis.setTextColor(Color.WHITE); xAxis.setDrawAxisLine(false); xAxis.setDrawGridLines(true); xAxis.setTextColor(Color.rgb(255, 192, 56)); xAxis.setCenterAxisLabels(true); xAxis.setGranularity(1f); // one hour xAxis.setValueFormatter(new ValueFormatter() { private final SimpleDateFormat mFormat = new SimpleDateFormat("dd MMM HH:mm", Locale.ENGLISH); @Override public String getFormattedValue(float value) { long millis = TimeUnit.HOURS.toMillis((long) value); return mFormat.format(new Date(millis)); } }); YAxis leftAxis = chart.getAxisLeft(); leftAxis.setPosition(YAxis.YAxisLabelPosition.INSIDE_CHART); leftAxis.setTypeface(tfLight); leftAxis.setTextColor(ColorTemplate.getHoloBlue()); leftAxis.setDrawGridLines(true); leftAxis.setGranularityEnabled(true); leftAxis.setAxisMinimum(0f); leftAxis.setAxisMaximum(170f); leftAxis.setYOffset(-9f); leftAxis.setTextColor(Color.rgb(255, 192, 56)); YAxis rightAxis = chart.getAxisRight(); rightAxis.setEnabled(false); } private void setData(int count, float range) { // now in hours long now = TimeUnit.MILLISECONDS.toHours(System.currentTimeMillis()); ArrayList<Entry> values = new ArrayList<>(); // count = hours float to = now + count; // increment by 1 hour for (float x = now; x < to; x++) { float y = getRandom(range, 50); values.add(new Entry(x, y)); // add one entry per hour } // create a dataset and give it a type LineDataSet set1 = new LineDataSet(values, "DataSet 1"); set1.setAxisDependency(AxisDependency.LEFT); set1.setColor(ColorTemplate.getHoloBlue()); set1.setValueTextColor(ColorTemplate.getHoloBlue()); set1.setLineWidth(1.5f); set1.setDrawCircles(false); set1.setDrawValues(false); set1.setFillAlpha(65); set1.setFillColor(ColorTemplate.getHoloBlue()); set1.setHighLightColor(Color.rgb(244, 117, 117)); set1.setDrawCircleHole(false); // create a data object with the data sets LineData data = new LineData(set1); data.setValueTextColor(Color.WHITE); data.setValueTextSize(9f); // set data chart.setData(data); } @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.viewGithub: { Intent i = new Intent(Intent.ACTION_VIEW); i.setData(Uri.parse("https://github.com/PhilJay/MPAndroidChart/blob/master/MPChartExample/src/com/xxmassdeveloper/mpchartexample/LineChartTime.java")); startActivity(i); break; } case R.id.actionToggleValues: { List<ILineDataSet> sets = chart.getData() .getDataSets(); for (ILineDataSet iSet : sets) { LineDataSet set = (LineDataSet) iSet; set.setDrawValues(!set.isDrawValuesEnabled()); } chart.invalidate(); break; } case R.id.actionToggleHighlight: { if (chart.getData() != null) { chart.getData().setHighlightEnabled(!chart.getData().isHighlightEnabled()); chart.invalidate(); } break; } case R.id.actionToggleFilled: { List<ILineDataSet> sets = chart.getData() .getDataSets(); for (ILineDataSet iSet : sets) { LineDataSet set = (LineDataSet) iSet; if (set.isDrawFilledEnabled()) set.setDrawFilled(false); else set.setDrawFilled(true); } chart.invalidate(); break; } case R.id.actionToggleCircles: { List<ILineDataSet> sets = chart.getData() .getDataSets(); for (ILineDataSet iSet : sets) { LineDataSet set = (LineDataSet) iSet; if (set.isDrawCirclesEnabled()) set.setDrawCircles(false); else set.setDrawCircles(true); } chart.invalidate(); break; } case R.id.actionToggleCubic: { List<ILineDataSet> sets = chart.getData() .getDataSets(); for (ILineDataSet iSet : sets) { LineDataSet set = (LineDataSet) iSet; if (set.getMode() == LineDataSet.Mode.CUBIC_BEZIER) set.setMode(LineDataSet.Mode.LINEAR); else set.setMode(LineDataSet.Mode.CUBIC_BEZIER); } chart.invalidate(); break; } case R.id.actionToggleStepped: { List<ILineDataSet> sets = chart.getData() .getDataSets(); for (ILineDataSet iSet : sets) { LineDataSet set = (LineDataSet) iSet; if (set.getMode() == LineDataSet.Mode.STEPPED) set.setMode(LineDataSet.Mode.LINEAR); else set.setMode(LineDataSet.Mode.STEPPED); } chart.invalidate(); break; } case R.id.actionTogglePinch: { if (chart.isPinchZoomEnabled()) chart.setPinchZoom(false); else chart.setPinchZoom(true); chart.invalidate(); break; } case R.id.actionToggleAutoScaleMinMax: { chart.setAutoScaleMinMaxEnabled(!chart.isAutoScaleMinMaxEnabled()); chart.notifyDataSetChanged(); break; } case R.id.animateX: { chart.animateX(2000); break; } case R.id.animateY: { chart.animateY(2000); break; } case R.id.animateXY: { chart.animateXY(2000, 2000); break; } case R.id.actionSave: { if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) { saveToGallery(); } else { requestStoragePermission(chart); } break; } } return true; } @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { tvX.setText(String.valueOf(seekBarX.getProgress())); setData(seekBarX.getProgress(), 50); // redraw chart.invalidate(); } @Override protected void saveToGallery() { saveToGallery(chart, "LineChartTime"); } @Override public void onStartTrackingTouch(SeekBar seekBar) {} @Override public void onStopTrackingTouch(SeekBar seekBar) {} }