Skip to content

Commit 33f24ae

Browse files
hannesa2hannesa2
committed
View Binding
1 parent 21f7317 commit 33f24ae

File tree

1 file changed

+74
-84
lines changed

1 file changed

+74
-84
lines changed

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

Lines changed: 74 additions & 84 deletions
Original file line numberDiff line numberDiff line change
@@ -9,10 +9,8 @@ import android.view.MenuItem
99
import android.view.MotionEvent
1010
import android.widget.SeekBar
1111
import android.widget.SeekBar.OnSeekBarChangeListener
12-
import android.widget.TextView
1312
import androidx.core.content.ContextCompat
1413
import androidx.core.net.toUri
15-
import com.github.mikephil.charting.charts.LineChart
1614
import com.github.mikephil.charting.components.Legend
1715
import com.github.mikephil.charting.data.Entry
1816
import com.github.mikephil.charting.data.LineData
@@ -24,60 +22,52 @@ import com.github.mikephil.charting.listener.OnChartGestureListener
2422
import com.github.mikephil.charting.listener.OnChartValueSelectedListener
2523
import com.github.mikephil.charting.utils.ColorTemplate
2624
import info.appdev.chartexample.DataTools.Companion.getValues
25+
import info.appdev.chartexample.databinding.ActivityLinechartBinding
2726
import info.appdev.chartexample.notimportant.DemoBase
2827
import timber.log.Timber
2928

3029
class MultiLineChartActivity : DemoBase(), OnSeekBarChangeListener, OnChartGestureListener, OnChartValueSelectedListener {
31-
private var chart: LineChart? = null
32-
private var seekBarX: SeekBar? = null
33-
private var seekBarY: SeekBar? = null
34-
private var tvX: TextView? = null
35-
private var tvY: TextView? = null
30+
31+
private lateinit var binding: ActivityLinechartBinding
3632

3733
override fun onCreate(savedInstanceState: Bundle?) {
3834
super.onCreate(savedInstanceState)
39-
setContentView(R.layout.activity_linechart)
40-
41-
tvX = findViewById(R.id.tvXMax)
42-
tvY = findViewById(R.id.tvYMax)
43-
44-
seekBarX = findViewById(R.id.seekBarX)
45-
seekBarX!!.setOnSeekBarChangeListener(this)
46-
47-
seekBarY = findViewById(R.id.seekBarY)
48-
seekBarY!!.setOnSeekBarChangeListener(this)
49-
50-
chart = findViewById(R.id.chart1)
51-
chart!!.setOnChartValueSelectedListener(this)
52-
53-
chart!!.setDrawGridBackground(false)
54-
chart!!.description.isEnabled = false
55-
chart!!.setDrawBorders(false)
56-
57-
chart!!.axisLeft.isEnabled = false
58-
chart!!.axisRight.setDrawAxisLine(false)
59-
chart!!.axisRight.setDrawGridLines(false)
60-
chart!!.xAxis.setDrawAxisLine(false)
61-
chart!!.xAxis.setDrawGridLines(false)
35+
binding = ActivityLinechartBinding.inflate(layoutInflater)
36+
val view = binding.root
37+
setContentView(view)
38+
39+
binding.seekBarX.setOnSeekBarChangeListener(this)
40+
binding.seekBarY.setOnSeekBarChangeListener(this)
41+
binding.chart1.setOnChartValueSelectedListener(this)
42+
binding.chart1.setDrawGridBackground(false)
43+
binding.chart1.description.isEnabled = false
44+
binding.chart1.setDrawBorders(false)
45+
46+
binding.chart1.axisLeft.isEnabled = false
47+
binding.chart1.axisRight.setDrawAxisLine(false)
48+
binding.chart1.axisRight.setDrawGridLines(false)
49+
binding.chart1.xAxis.setDrawAxisLine(false)
50+
binding.chart1.xAxis.setDrawGridLines(false)
6251

6352
// enable touch gestures
64-
chart!!.setTouchEnabled(true)
53+
binding.chart1.setTouchEnabled(true)
6554

6655
// enable scaling and dragging
67-
chart!!.setDragEnabled(true)
68-
chart!!.setScaleEnabled(true)
56+
binding.chart1.setDragEnabled(true)
57+
binding.chart1.setScaleEnabled(true)
6958

7059
// if disabled, scaling can be done on x- and y-axis separately
71-
chart!!.setPinchZoom(false)
60+
binding.chart1.setPinchZoom(false)
7261

73-
seekBarX!!.progress = 20
74-
seekBarY!!.progress = 100
62+
binding.seekBarX.progress = 20
63+
binding.seekBarY.progress = 100
7564

76-
val l = chart!!.legend
77-
l.verticalAlignment = Legend.LegendVerticalAlignment.TOP
78-
l.horizontalAlignment = Legend.LegendHorizontalAlignment.RIGHT
79-
l.orientation = Legend.LegendOrientation.VERTICAL
80-
l.setDrawInside(false)
65+
binding.chart1.legend.apply {
66+
verticalAlignment = Legend.LegendVerticalAlignment.TOP
67+
horizontalAlignment = Legend.LegendHorizontalAlignment.RIGHT
68+
orientation = Legend.LegendOrientation.VERTICAL
69+
setDrawInside(false)
70+
}
8171
}
8272

8373
private val colors = intArrayOf(
@@ -87,32 +77,32 @@ class MultiLineChartActivity : DemoBase(), OnSeekBarChangeListener, OnChartGestu
8777
)
8878

8979
override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
90-
chart!!.resetTracking()
80+
binding.chart1.resetTracking()
9181

92-
val progress: Int = seekBarX!!.progress
82+
val progress: Int = binding.seekBarX.progress
9383

94-
tvX!!.text = seekBarX!!.progress.toString()
95-
tvY!!.text = seekBarY!!.progress.toString()
84+
binding.tvXMax.text = binding.seekBarX.progress.toString()
85+
binding.tvYMax.text = binding.seekBarY.progress.toString()
9686

97-
val dataSets = ArrayList<ILineDataSet?>()
87+
val dataSets = ArrayList<ILineDataSet>()
9888

99-
for (z in 0..2) {
89+
for (datasetNumber in 0..2) {
10090
val values = ArrayList<Entry?>()
10191
val sampleValues = getValues(100)
10292

10393
for (i in 0..<progress) {
104-
val `val` = ((sampleValues[i]!!.toFloat() * seekBarY!!.progress) + 3).toDouble()
105-
values.add(Entry(i.toFloat(), `val`.toFloat()))
94+
val valuesY = ((sampleValues[i]!!.toFloat() * binding.seekBarY.progress) + 3).toDouble()
95+
values.add(Entry(i.toFloat(), valuesY.toFloat()))
10696
}
10797

108-
val d = LineDataSet(values, "DataSet " + (z + 1))
109-
d.setLineWidth(2.5f)
110-
d.circleRadius = 4f
98+
val lineDataSet = LineDataSet(values, "DataSet " + (datasetNumber + 1))
99+
lineDataSet.setLineWidth(2.5f)
100+
lineDataSet.circleRadius = 4f
111101

112-
val color = colors[z % colors.size]
113-
d.setColor(color)
114-
d.setCircleColor(color)
115-
dataSets.add(d)
102+
val color = colors[datasetNumber % colors.size]
103+
lineDataSet.setColor(color)
104+
lineDataSet.setCircleColor(color)
105+
dataSets.add(lineDataSet)
116106
}
117107

118108
// make the first DataSet dashed
@@ -121,8 +111,8 @@ class MultiLineChartActivity : DemoBase(), OnSeekBarChangeListener, OnChartGestu
121111
(dataSets[0] as LineDataSet).setCircleColors(*ColorTemplate.VORDIPLOM_COLORS)
122112

123113
val data = LineData(dataSets)
124-
chart!!.setData(data)
125-
chart!!.invalidate()
114+
binding.chart1.setData(data)
115+
binding.chart1.invalidate()
126116
}
127117

128118
override fun onCreateOptionsMenu(menu: Menu): Boolean {
@@ -141,44 +131,44 @@ class MultiLineChartActivity : DemoBase(), OnSeekBarChangeListener, OnChartGestu
141131
}
142132

143133
R.id.actionToggleValues -> {
144-
chart!!.data!!.dataSets.forEach { set ->
134+
binding.chart1.data!!.dataSets.forEach { set ->
145135
set.setDrawValues(!set.isDrawValuesEnabled)
146136
}
147137

148-
chart!!.invalidate()
138+
binding.chart1.invalidate()
149139
}
150140

151141
R.id.actionTogglePinch -> {
152-
if (chart!!.isPinchZoomEnabled) chart!!.setPinchZoom(false)
153-
else chart!!.setPinchZoom(true)
142+
if (binding.chart1.isPinchZoomEnabled) binding.chart1.setPinchZoom(false)
143+
else binding.chart1.setPinchZoom(true)
154144

155-
chart!!.invalidate()
145+
binding.chart1.invalidate()
156146
}
157147

158148
R.id.actionToggleAutoScaleMinMax -> {
159-
chart!!.isAutoScaleMinMaxEnabled = !chart!!.isAutoScaleMinMaxEnabled
160-
chart!!.notifyDataSetChanged()
149+
binding.chart1.isAutoScaleMinMaxEnabled = !binding.chart1.isAutoScaleMinMaxEnabled
150+
binding.chart1.notifyDataSetChanged()
161151
}
162152

163153
R.id.actionToggleHighlight -> {
164-
if (chart!!.data != null) {
165-
chart!!.data!!.isHighlightEnabled = !chart!!.data!!.isHighlightEnabled()
166-
chart!!.invalidate()
154+
if (binding.chart1.data != null) {
155+
binding.chart1.data!!.isHighlightEnabled = !binding.chart1.data!!.isHighlightEnabled()
156+
binding.chart1.invalidate()
167157
}
168158
}
169159

170160
R.id.actionToggleFilled -> {
171-
chart!!.data!!.dataSets.forEach { set ->
161+
binding.chart1.data!!.dataSets.forEach { set ->
172162
if (set.isDrawFilledEnabled)
173163
set.setDrawFilled(false)
174164
else
175165
set.setDrawFilled(true)
176166
}
177-
chart!!.invalidate()
167+
binding.chart1.invalidate()
178168
}
179169

180170
R.id.actionToggleCircles -> {
181-
val sets = chart!!.data!!.dataSets
171+
val sets = binding.chart1.data!!.dataSets
182172

183173
for (iSet in sets) {
184174
val set = iSet as LineDataSet
@@ -187,11 +177,11 @@ class MultiLineChartActivity : DemoBase(), OnSeekBarChangeListener, OnChartGestu
187177
else
188178
set.setDrawCircles(true)
189179
}
190-
chart!!.invalidate()
180+
binding.chart1.invalidate()
191181
}
192182

193183
R.id.actionToggleCubic -> {
194-
val sets = chart!!.data!!.dataSets
184+
val sets = binding.chart1.data!!.dataSets
195185

196186
for (iSet in sets) {
197187
val set = iSet as LineDataSet
@@ -200,11 +190,11 @@ class MultiLineChartActivity : DemoBase(), OnSeekBarChangeListener, OnChartGestu
200190
else
201191
LineDataSet.Mode.CUBIC_BEZIER
202192
}
203-
chart!!.invalidate()
193+
binding.chart1.invalidate()
204194
}
205195

206196
R.id.actionToggleStepped -> {
207-
val sets = chart!!.data!!.dataSets
197+
val sets = binding.chart1.data!!.dataSets
208198

209199
for (iSet in sets) {
210200
val set = iSet as LineDataSet
@@ -213,11 +203,11 @@ class MultiLineChartActivity : DemoBase(), OnSeekBarChangeListener, OnChartGestu
213203
else
214204
LineDataSet.Mode.STEPPED
215205
}
216-
chart!!.invalidate()
206+
binding.chart1.invalidate()
217207
}
218208

219209
R.id.actionToggleHorizontalCubic -> {
220-
val sets = chart!!.data!!.dataSets
210+
val sets = binding.chart1.data!!.dataSets
221211

222212
for (iSet in sets) {
223213
val set = iSet as LineDataSet
@@ -226,34 +216,34 @@ class MultiLineChartActivity : DemoBase(), OnSeekBarChangeListener, OnChartGestu
226216
else
227217
LineDataSet.Mode.HORIZONTAL_BEZIER
228218
}
229-
chart!!.invalidate()
219+
binding.chart1.invalidate()
230220
}
231221

232222
R.id.actionSave -> {
233223
if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
234224
saveToGallery()
235225
} else {
236-
requestStoragePermission(chart)
226+
requestStoragePermission(binding.chart1)
237227
}
238228
}
239229

240230
R.id.animateX -> {
241-
chart!!.animateX(2000)
231+
binding.chart1.animateX(2000)
242232
}
243233

244234
R.id.animateY -> {
245-
chart!!.animateY(2000)
235+
binding.chart1.animateY(2000)
246236
}
247237

248238
R.id.animateXY -> {
249-
chart!!.animateXY(2000, 2000)
239+
binding.chart1.animateXY(2000, 2000)
250240
}
251241
}
252242
return true
253243
}
254244

255245
override fun saveToGallery() {
256-
saveToGallery(chart, "MultiLineChartActivity")
246+
saveToGallery(binding.chart1, "MultiLineChartActivity")
257247
}
258248

259249
override fun onChartGestureStart(me: MotionEvent, lastPerformedGesture: ChartGesture?) {
@@ -264,7 +254,7 @@ class MultiLineChartActivity : DemoBase(), OnSeekBarChangeListener, OnChartGestu
264254
Timber.i("END, lastGesture: $lastPerformedGesture")
265255

266256
// un-highlight values after the gesture is finished and no single-tap
267-
if (lastPerformedGesture != ChartGesture.SINGLE_TAP) chart!!.highlightValues(null) // or highlightTouch(null) for callback to onNothingSelected(...)
257+
if (lastPerformedGesture != ChartGesture.SINGLE_TAP) binding.chart1.highlightValues(null) // or highlightTouch(null) for callback to onNothingSelected(...)
268258
}
269259

270260
override fun onChartLongPressed(me: MotionEvent) {

0 commit comments

Comments
 (0)