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