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Merged
hannesa2 merged 1 commit into from
Dec 15, 2025
Merged

View binding #474

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97 changes: 45 additions & 52 deletions app/src/main/kotlin/info/appdev/chartexample/BarChartActivitySinus.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -9,79 +9,72 @@ import android.view.Menu
import android.view.MenuItem
import android.widget.SeekBar
import android.widget.SeekBar.OnSeekBarChangeListener
import android.widget.TextView
import androidx.core.content.ContextCompat
import androidx.core.net.toUri
import com.github.mikephil.charting.charts.BarChart
import com.github.mikephil.charting.components.Legend
import com.github.mikephil.charting.components.Legend.LegendForm
import com.github.mikephil.charting.data.BarData
import com.github.mikephil.charting.data.BarDataSet
import com.github.mikephil.charting.data.BarEntry
import com.github.mikephil.charting.utils.FileUtils
import info.appdev.chartexample.databinding.ActivityBarchartSinusBinding
import info.appdev.chartexample.notimportant.DemoBase

class BarChartActivitySinus : DemoBase(), OnSeekBarChangeListener {
private var chart1: BarChart? = null
private var seekbarValues: SeekBar? = null
private var tvValueCount: TextView? = null

private var dataSinus: MutableList<BarEntry?>? = null

private lateinit var binding: ActivityBarchartSinusBinding

override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_barchart_sinus)
binding = ActivityBarchartSinusBinding.inflate(layoutInflater)
val view = binding.root
setContentView(view)

dataSinus = FileUtils.loadBarEntriesFromAssets(assets, "othersine.txt")
binding.chart1.setDrawBarShadow(false)
binding.chart1.setDrawValueAboveBar(true)

tvValueCount = findViewById(R.id.tvValueCount)

seekbarValues = findViewById(R.id.seekbarValues)

chart1 = findViewById(R.id.chart1)

chart1!!.setDrawBarShadow(false)
chart1!!.setDrawValueAboveBar(true)

chart1!!.description.isEnabled = false
binding.chart1.description.isEnabled = false

// if more than 60 entries are displayed in the chart, no values will be
// drawn
chart1!!.setMaxVisibleValueCount(60)
binding.chart1.setMaxVisibleValueCount(60)

// scaling can now only be done on x- and y-axis separately
chart1!!.setPinchZoom(false)
binding.chart1.setPinchZoom(false)

// draw shadows for each bar that show the maximum value
// chart.setDrawBarShadow(true);

// chart.setDrawXLabels(false);
chart1!!.setDrawGridBackground(false)
binding.chart1.setDrawGridBackground(false)

// chart.setDrawYLabels(false);
val xAxis = chart1!!.xAxis
val xAxis = binding.chart1.xAxis
xAxis.isEnabled = false

val leftAxis = chart1!!.axisLeft
val leftAxis = binding.chart1.axisLeft
leftAxis.typeface = tfLight
leftAxis.setLabelCount(6, false)
leftAxis.setAxisMinimum(-2.5f)
leftAxis.setAxisMaximum(2.5f)
leftAxis.isGranularityEnabled = true
leftAxis.setGranularity(0.1f)

val rightAxis = chart1!!.axisRight
val rightAxis = binding.chart1.axisRight
rightAxis.setDrawGridLines(false)
rightAxis.typeface = tfLight
rightAxis.setLabelCount(6, false)
rightAxis.setAxisMinimum(-2.5f)
rightAxis.setAxisMaximum(2.5f)
rightAxis.setGranularity(0.1f)

seekbarValues!!.setOnSeekBarChangeListener(this)
seekbarValues!!.progress = 150 // set data
binding.seekbarValues.setOnSeekBarChangeListener(this)
binding.seekbarValues.progress = 150 // set data

chart1!!.legend.apply {
binding.chart1.legend.apply {
verticalAlignment = Legend.LegendVerticalAlignment.BOTTOM
horizontalAlignment = Legend.LegendHorizontalAlignment.LEFT
orientation = Legend.LegendOrientation.HORIZONTAL
Expand All @@ -92,7 +85,7 @@ class BarChartActivitySinus : DemoBase(), OnSeekBarChangeListener {
xEntrySpace = 4f
}

chart1!!.animateXY(1500, 1500)
binding.chart1.animateXY(1500, 1500)
}

private fun setData(count: Int) {
Expand All @@ -104,13 +97,13 @@ class BarChartActivitySinus : DemoBase(), OnSeekBarChangeListener {

val set: BarDataSet

if (chart1!!.data != null &&
chart1!!.data!!.getDataSetCount() > 0
if (binding.chart1.data != null &&
binding.chart1.data!!.getDataSetCount() > 0
) {
set = chart1!!.data!!.getDataSetByIndex(0) as BarDataSet
set = binding.chart1.data!!.getDataSetByIndex(0) as BarDataSet
set.setEntries(entries)
chart1!!.data!!.notifyDataChanged()
chart1!!.notifyDataSetChanged()
binding.chart1.data!!.notifyDataChanged()
binding.chart1.notifyDataSetChanged()
} else {
set = BarDataSet(entries, "Sinus Function")
set.setColor(Color.BLUE)
Expand All @@ -122,7 +115,7 @@ class BarChartActivitySinus : DemoBase(), OnSeekBarChangeListener {
data.setDrawValues(false)
data.barWidth = 0.8f

chart1!!.setData(data)
binding.chart1.setData(data)
}

override fun onCreateOptionsMenu(menu: Menu?): Boolean {
Expand All @@ -139,67 +132,67 @@ class BarChartActivitySinus : DemoBase(), OnSeekBarChangeListener {
}

R.id.actionToggleValues -> {
for (set in chart1!!.data!!.dataSets) set.setDrawValues(!set.isDrawValuesEnabled())
for (set in binding.chart1.data!!.dataSets) set.setDrawValues(!set.isDrawValuesEnabled())

chart1!!.invalidate()
binding.chart1.invalidate()
}

R.id.actionToggleHighlight -> {
if (chart1!!.data != null) {
chart1!!.data!!.isHighlightEnabled = !chart1!!.data!!.isHighlightEnabled()
chart1!!.invalidate()
if (binding.chart1.data != null) {
binding.chart1.data!!.isHighlightEnabled = !binding.chart1.data!!.isHighlightEnabled()
binding.chart1.invalidate()
}
}

R.id.actionTogglePinch -> {
if (chart1!!.isPinchZoomEnabled) chart1!!.setPinchZoom(false)
else chart1!!.setPinchZoom(true)
if (binding.chart1.isPinchZoomEnabled) binding.chart1.setPinchZoom(false)
else binding.chart1.setPinchZoom(true)

chart1!!.invalidate()
binding.chart1.invalidate()
}

R.id.actionToggleAutoScaleMinMax -> {
chart1!!.isAutoScaleMinMaxEnabled = !chart1!!.isAutoScaleMinMaxEnabled
chart1!!.notifyDataSetChanged()
binding.chart1.isAutoScaleMinMaxEnabled = !binding.chart1.isAutoScaleMinMaxEnabled
binding.chart1.notifyDataSetChanged()
}

R.id.actionToggleBarBorders -> {
for (set in chart1!!.data!!.dataSets) (set as BarDataSet).barBorderWidth = if (set.barBorderWidth == 1f) 0f else 1f
for (set in binding.chart1.data!!.dataSets) (set as BarDataSet).barBorderWidth = if (set.barBorderWidth == 1f) 0f else 1f

chart1!!.invalidate()
binding.chart1.invalidate()
}

R.id.animateX -> {
chart1!!.animateX(2000)
binding.chart1.animateX(2000)
}

R.id.animateY -> {
chart1!!.animateY(2000)
binding.chart1.animateY(2000)
}

R.id.animateXY -> {
chart1!!.animateXY(2000, 2000)
binding.chart1.animateXY(2000, 2000)
}

R.id.actionSave -> {
if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
saveToGallery()
} else {
requestStoragePermission(chart1)
requestStoragePermission(binding.chart1)
}
}
}
return true
}

override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
tvValueCount!!.text = seekbarValues!!.progress.toString()
binding.tvValueCount.text = binding.seekbarValues.progress.toString()

setData(seekbarValues!!.progress)
chart1!!.invalidate()
setData(binding.seekbarValues.progress)
binding.chart1.invalidate()
}

override fun saveToGallery() = saveToGallery(chart1, "BarChartActivitySinus")
override fun saveToGallery() = saveToGallery(binding.chart1, "BarChartActivitySinus")

override fun onStartTrackingTouch(seekBar: SeekBar?) = Unit

Expand Down
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