Kotlin fragments

Author: hannesa2

app/src/main/java/info/appdev/chartexample/fragments/BarChartFrag.java

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+package info.appdev.chartexample.fragments
+
+import android.graphics.Typeface
+import android.os.Bundle
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.MotionEvent
+import android.view.View
+import android.view.ViewGroup
+import android.widget.FrameLayout
+import androidx.fragment.app.Fragment
+import com.github.mikephil.charting.charts.BarChart
+import com.github.mikephil.charting.listener.ChartTouchListener.ChartGesture
+import com.github.mikephil.charting.listener.OnChartGestureListener
+import info.appdev.chartexample.R
+import info.appdev.chartexample.custom.MyMarkerView
+
+class BarChartFrag : SimpleFragment(), OnChartGestureListener {
+    private var chart: BarChart? = null
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
+        val v = inflater.inflate(R.layout.frag_simple_bar, container, false)
+
+        // create a new chart object
+        chart = BarChart(requireActivity())
+        chart!!.description.isEnabled = false
+        chart!!.onChartGestureListener = this
+
+        val mv = MyMarkerView(activity, R.layout.custom_marker_view)
+        mv.chartView = chart // For bounds control
+        chart!!.setMarker(mv)
+
+        chart!!.setDrawGridBackground(false)
+        chart!!.setDrawBarShadow(false)
+
+        val tf = Typeface.createFromAsset(requireContext().assets, "OpenSans-Light.ttf")
+
+        chart!!.setData(generateBarData(1, 20000f))
+
+        val l = chart!!.legend
+        l.typeface = tf
+
+        val leftAxis = chart!!.axisLeft
+        leftAxis.typeface = tf
+        leftAxis.setAxisMinimum(0f) // this replaces setStartAtZero(true)
+
+        chart!!.axisRight.isEnabled = false
+
+        val xAxis = chart!!.xAxis
+        xAxis.isEnabled = false
+
+        // programmatically add the chart
+        val parent = v.findViewById<FrameLayout>(R.id.parentLayout)
+        parent.addView(chart)
+
+        return v
+    }
+
+    override fun onChartGestureStart(me: MotionEvent?, lastPerformedGesture: ChartGesture?) {
+        Log.i("Gesture", "START")
+    }
+
+    override fun onChartGestureEnd(me: MotionEvent?, lastPerformedGesture: ChartGesture?) {
+        Log.i("Gesture", "END")
+        chart!!.highlightValues(null)
+    }
+
+    override fun onChartLongPressed(me: MotionEvent?) {
+        Log.i("LongPress", "Chart long pressed.")
+    }
+
+    override fun onChartDoubleTapped(me: MotionEvent?) {
+        Log.i("DoubleTap", "Chart double-tapped.")
+    }
+
+    override fun onChartSingleTapped(me: MotionEvent?) {
+        Log.i("SingleTap", "Chart single-tapped.")
+    }
+
+    override fun onChartFling(me1: MotionEvent?, me2: MotionEvent?, velocityX: Float, velocityY: Float) {
+        Log.i("Fling", "Chart fling. VelocityX: $velocityX, VelocityY: $velocityY")
+    }
+
+    override fun onChartScale(me: MotionEvent?, scaleX: Float, scaleY: Float) {
+        Log.i("Scale / Zoom", "ScaleX: $scaleX, ScaleY: $scaleY")
+    }
+
+    override fun onChartTranslate(me: MotionEvent?, dX: Float, dY: Float) {
+        Log.i("Translate / Move", "dX: $dX, dY: $dY")
+    }
+
+    companion object {
+        fun newInstance(): Fragment {
+            return BarChartFrag()
+        }
+    }
+}

app/src/main/java/info/appdev/chartexample/fragments/BarChartFrag.kt

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+package info.appdev.chartexample.fragments
+
+import android.graphics.Typeface
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import com.github.mikephil.charting.charts.LineChart
+import info.appdev.chartexample.R
+
+class ComplexityFragment : SimpleFragment() {
+    private var chart: LineChart? = null
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
+        val v = inflater.inflate(R.layout.frag_simple_line, container, false)
+
+        chart = v.findViewById(R.id.lineChart1)
+
+        chart!!.description.isEnabled = false
+
+        chart!!.setDrawGridBackground(false)
+
+        chart!!.setData(complexity)
+        chart!!.animateX(3000)
+
+        val tf = Typeface.createFromAsset(requireContext().assets, "OpenSans-Light.ttf")
+
+        val l = chart!!.legend
+        l.typeface = tf
+
+        val leftAxis = chart!!.axisLeft
+        leftAxis.typeface = tf
+
+        chart!!.axisRight.isEnabled = false
+
+        val xAxis = chart!!.xAxis
+        xAxis.isEnabled = false
+
+        return v
+    }
+
+    companion object {
+        fun newInstance(): Fragment {
+            return ComplexityFragment()
+        }
+    }
+}