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TimeBar Double
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‎app/src/androidTest/kotlin/info/appdev/chartexample/StartTest.kt‎

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@@ -42,6 +42,7 @@ import org.junit.Test
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import org.junit.rules.TestName
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import org.junit.runner.RunWith
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import timber.log.Timber
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import kotlin.jvm.java
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@RunWith(AndroidJUnit4::class)
@@ -278,6 +279,7 @@ class StartTest {
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contentItem.clazz == HorizontalBarFullComposeActivity::class.java ||
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contentItem.clazz == MultiLineComposeActivity::class.java ||
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contentItem.clazz == GradientActivity::class.java ||
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contentItem.clazz == TimeBarActivity::class.java ||
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contentItem.clazz == TimeLineActivity::class.java
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) {
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// These charts have less clickable area, so skip further clicks

‎app/src/main/AndroidManifest.xml‎

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@@ -60,6 +60,7 @@
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<activity android:name="info.appdev.chartexample.HalfPieChartActivity" />
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<activity android:name="info.appdev.chartexample.SpecificPositionsLineChartActivity" />
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<activity android:name="info.appdev.chartexample.TimeLineActivity" />
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<activity android:name="info.appdev.chartexample.TimeBarActivity" />
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</application>
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</manifest>

‎app/src/main/kotlin/info/appdev/chartexample/TimeBarActivity.kt‎

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package info.appdev.chartexample
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import android.Manifest
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import android.R.attr.entries
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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.os.Bundle
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import android.view.Menu
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import android.view.MenuItem
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import android.widget.SeekBar
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import android.widget.SeekBar.OnSeekBarChangeListener
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import androidx.core.content.ContextCompat
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import androidx.core.content.res.ResourcesCompat
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import androidx.core.net.toUri
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import info.appdev.chartexample.DataTools.Companion.getValues
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import info.appdev.chartexample.TimeLineActivity.Companion.TIME_OFFSET
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import info.appdev.chartexample.databinding.ActivityHorizontalbarchartBinding
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import info.appdev.chartexample.formatter.UnixTimeAxisValueFormatter
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import info.appdev.chartexample.formatter.UnixTimeRelative2NowAxisValueFormatter
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import info.appdev.chartexample.formatter.UnixTimeValueFormatter
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import info.appdev.chartexample.notimportant.DemoBase
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import info.appdev.charting.components.Description
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import info.appdev.charting.components.Legend
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import info.appdev.charting.components.XAxis.XAxisPosition
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import info.appdev.charting.data.BarData
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import info.appdev.charting.data.BarDataSet
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import info.appdev.charting.data.BarEntryDouble
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import info.appdev.charting.data.BarEntryFloat
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import info.appdev.charting.interfaces.datasets.IBarDataSet
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import timber.log.Timber
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class TimeBarActivity : DemoBase(), OnSeekBarChangeListener {
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private lateinit var binding: ActivityHorizontalbarchartBinding
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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binding = ActivityHorizontalbarchartBinding.inflate(layoutInflater)
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setContentView(binding.root)
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binding.seekBarX.setOnSeekBarChangeListener(this)
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binding.seekBarY.setOnSeekBarChangeListener(this)
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binding.chart1.isLogging = true
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binding.chart1.isDrawBarShadow = false
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binding.chart1.isDrawValueAboveBar = true
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binding.chart1.description.isEnabled = true
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binding.chart1.description = Description().apply {
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text = "Time Bar Line"
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}
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// if more than 60 entries are displayed in the chart, no values will be drawn
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binding.chart1.setMaxVisibleValueCount(60)
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// scaling can now only be done on x- and y-axis separately
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binding.chart1.isPinchZoom = false
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// draw shadows for each bar that show the maximum value
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// chart.setDrawBarShadow(true);
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binding.chart1.setDrawGridBackground(false)
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binding.chart1.xAxis.apply {
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position = XAxisPosition.BOTTOM
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typeface = tfLight
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isDrawAxisLine = true
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isDrawGridLines = true
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granularity = 10f
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// valueFormatter = UnixTimeAxisValueFormatter("HH:mm:ss")
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}
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// binding.chart1.axisLeft.apply {
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// typeface = tfLight
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// isDrawAxisLine = true
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// isDrawGridLines = true
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// axisMinimum = 0f // this replaces setStartAtZero(true)
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// }
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binding.chart1.axisRight.apply {
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typeface = tfLight
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isDrawAxisLine = true
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isDrawGridLines = false
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axisMinimum = 0f // this replaces setStartAtZero(true)
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valueFormatter = UnixTimeRelative2NowAxisValueFormatter("HH:mm:ss")
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}
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binding.chart1.setFitBars(true)
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binding.chart1.animateY(2500)
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// setting data
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binding.seekBarX.progress = 4
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binding.seekBarY.progress = 12
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binding.chart1.legend.apply {
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verticalAlignment = Legend.LegendVerticalAlignment.BOTTOM
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horizontalAlignment = Legend.LegendHorizontalAlignment.LEFT
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orientation = Legend.LegendOrientation.HORIZONTAL
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setDrawInside(false)
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formSize = 8f
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xEntrySpace = 4f
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}
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}
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private fun setData(count: Int) {
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val barWidth = 9f
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val spaceForBar = 10.0
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val values = ArrayList<BarEntryDouble>()
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val sampleValues = getValues(100).map { (it!! * 100).toInt() }
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var previousTimeOffset: Double = 0.0 //TIME_OFFSET.toDouble()
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for (i in 0..<count) {
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Timber.d("add ${sampleValues[i]}s to $previousTimeOffset")
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val yValue = sampleValues[i] + previousTimeOffset
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val value = BarEntryDouble(
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x = i * spaceForBar,
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vals = doubleArrayOf(previousTimeOffset, yValue),
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icon = ResourcesCompat.getDrawable(resources, R.drawable.star, null)
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)
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values.add(value)
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previousTimeOffset = yValue
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}
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Timber.d(values.joinToString(separator = "\n"))
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val set1: BarDataSet
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if (binding.chart1.barData != null &&
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binding.chart1.barData!!.dataSetCount > 0
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) {
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set1 = binding.chart1.barData!!.getDataSetByIndex(0) as BarDataSet
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@Suppress("UNCHECKED_CAST")
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set1.entries = values as MutableList<BarEntryFloat>
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binding.chart1.barData?.notifyDataChanged()
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binding.chart1.notifyDataSetChanged()
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} else {
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@Suppress("UNCHECKED_CAST")
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set1 = BarDataSet(values as MutableList<BarEntryFloat>, "Bar DataSet")
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set1.setColors(
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Color.GREEN,
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Color.BLUE,
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Color.YELLOW
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)
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set1.isDrawIcons = false
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val dataSets = ArrayList<IBarDataSet>()
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dataSets.add(set1)
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val data = BarData(dataSets)
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data.setValueTextSize(10f)
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data.setValueTypeface(tfLight)
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data.setValueFormatter(UnixTimeValueFormatter("HH:mm:ss"))
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data.barWidth = barWidth
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binding.chart1.data = data
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}
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}
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override fun onCreateOptionsMenu(menu: Menu?): Boolean {
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menuInflater.inflate(R.menu.bar, menu)
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return true
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}
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override fun onOptionsItemSelected(item: MenuItem): Boolean {
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when (item.itemId) {
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R.id.viewGithub -> {
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val i = Intent(Intent.ACTION_VIEW)
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i.data =
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"https://github.com/AppDevNext/AndroidChart/blob/master/app/src/main/java/info/appdev/chartexample/HorizontalBarChartActivity.kt".toUri()
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startActivity(i)
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}
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R.id.actionToggleValues -> {
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binding.chart1.barData?.dataSets?.forEach {
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it.isDrawValues = !it.isDrawValues
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}
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binding.chart1.invalidate()
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}
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R.id.actionToggleIcons -> {
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binding.chart1.barData?.dataSets?.forEach { set ->
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set.isDrawIcons = !set.isDrawIcons
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}
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binding.chart1.invalidate()
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}
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R.id.actionToggleHighlight -> {
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binding.chart1.barData?.let { data ->
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data.isHighlight = !data.isHighlight
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binding.chart1.invalidate()
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}
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}
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R.id.actionTogglePinch -> {
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binding.chart1.isPinchZoom = !binding.chart1.isPinchZoom
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binding.chart1.invalidate()
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}
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R.id.actionToggleAutoScaleMinMax -> {
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binding.chart1.isAutoScaleMinMax = !binding.chart1.isAutoScaleMinMax
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binding.chart1.notifyDataSetChanged()
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}
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R.id.actionToggleBarBorders -> {
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binding.chart1.barData?.dataSets?.map { it as BarDataSet }?.forEach { set ->
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set.barBorderWidth = if (set.barBorderWidth == 1f) 0f else 1f
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}
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binding.chart1.invalidate()
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}
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R.id.animateX -> {
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binding.chart1.animateX(2000)
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}
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R.id.animateY -> {
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binding.chart1.animateY(2000)
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}
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R.id.animateXY -> {
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binding.chart1.animateXY(2000, 2000)
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}
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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(binding.chart1)
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}
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}
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}
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return true
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}
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override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
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binding.tvXMax.text = binding.seekBarX.progress.toString()
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binding.tvYMax.text = binding.seekBarY.progress.toString()
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setData(binding.seekBarX.progress)
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binding.chart1.setFitBars(true)
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binding.chart1.invalidate()
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}
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override fun saveToGallery() {
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saveToGallery(binding.chart1, "HorizontalBarChartActivity")
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}
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override fun onStartTrackingTouch(seekBar: SeekBar?) = Unit
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override fun onStopTrackingTouch(seekBar: SeekBar?) = Unit
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}

‎app/src/main/kotlin/info/appdev/chartexample/formatter/UnixTimeValueFormatter.kt‎

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package info.appdev.chartexample.formatter
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import info.appdev.charting.data.BarEntryFloat
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import info.appdev.charting.data.EntryFloat
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import info.appdev.charting.formatter.IValueFormatter
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import info.appdev.charting.utils.ViewPortHandler
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import timber.log.Timber
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import java.text.SimpleDateFormat
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import java.util.Locale
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class UnixTimeValueFormatter(val format: String = "yyyy-MM-dd'T'HH:mm:ss'Z'") : IValueFormatter {
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val simpleDateFormat = SimpleDateFormat(format, Locale.getDefault())
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// For bar/line values
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override fun getFormattedValue(value: Float, entryFloat: EntryFloat?, dataSetIndex: Int, viewPortHandler: ViewPortHandler?): String {
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return if (entryFloat is BarEntryFloat) {
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Timber.d("$value ${simpleDateFormat.format(entryFloat.yVals?.get(0)!!.toLong()) +
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" - " +
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simpleDateFormat.format(entryFloat.yVals?.get(entryFloat.yVals?.size!! - 1)!!.toLong()) +
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"\n" +
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entryFloat.yVals?.get(0) +
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"-" +
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entryFloat.yVals?.get(entryFloat.yVals?.size!! - 1)} $entryFloat")
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simpleDateFormat.format(entryFloat.yVals?.get(0)!!.toLong()) +
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" - " +
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simpleDateFormat.format(entryFloat.yVals?.get(entryFloat.yVals?.size!! - 1)!!.toLong())
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}
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else
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simpleDateFormat.format(value.toLong())
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}
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}

‎app/src/main/kotlin/info/appdev/chartexample/notimportant/MainActivity.kt‎

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@@ -75,6 +75,7 @@ import info.appdev.chartexample.ScrollViewActivity
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import info.appdev.chartexample.SpecificPositionsLineChartActivity
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import info.appdev.chartexample.StackedBarActivity
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import info.appdev.chartexample.StackedBarActivityNegative
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import info.appdev.chartexample.TimeBarActivity
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import info.appdev.chartexample.TimeLineActivity
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import info.appdev.chartexample.compose.HorizontalBarComposeActivity
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import info.appdev.chartexample.compose.HorizontalBarFullComposeActivity
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companion object {
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val menuItems = ArrayList<ContentItem<out DemoBase>>().apply {
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add(ContentItem("Line Charts"))
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add(ContentItem("TimeBar", "Show a time line with Unix timestamp", TimeBarActivity::class.java))
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add(ContentItem("Basic", "Simple line chart.", LineChartActivity::class.java))
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add(ContentItem("Multiple", "Show multiple data sets.", MultiLineChartActivity::class.java))
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add(ContentItem("Dual Axis", "Line chart with dual y-axes.", LineChartDualAxisActivity::class.java))

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