Merge pull request #275 from AppDevNext/KotlinDemoBase

Kotlin DemoBase

Author: hannesa2

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/CombinedChartActivity.java

@@ -87,7 +87,7 @@ protected void onCreate(Bundle savedInstanceState) {
         xAxis.setValueFormatter(new IAxisValueFormatter() {
             @Override
             public String getFormattedValue(float value, AxisBase axis) {
-                return months[(int) value % months.length];
+                return DemoBase.Companion.getMonths().get((int) value % DemoBase.Companion.getMonths().size());
             }
         });
 

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/notimportant/DemoBase.java

@@ -0,0 +1,88 @@
+package com.xxmassdeveloper.mpchartexample.notimportant
+
+import android.Manifest
+import android.content.pm.PackageManager
+import android.graphics.Typeface
+import android.os.Bundle
+import android.view.View
+import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
+import androidx.core.app.ActivityCompat
+import com.github.mikephil.charting.charts.Chart
+import com.google.android.material.snackbar.Snackbar
+import com.xxmassdeveloper.mpchartexample.R
+import java.text.DateFormatSymbols
+
+abstract class DemoBase : AppCompatActivity(), ActivityCompat.OnRequestPermissionsResultCallback {
+
+    @JvmField
+    protected val parties: Array<String> = arrayOf(
+        "Party A", "Party B", "Party C", "Party D", "Party E", "Party F", "Party G", "Party H",
+        "Party I", "Party J", "Party K", "Party L", "Party M", "Party N", "Party O", "Party P",
+        "Party Q", "Party R", "Party S", "Party T", "Party U", "Party V", "Party W", "Party X",
+        "Party Y", "Party Z"
+    )
+
+    @JvmField
+    protected var tfRegular: Typeface? = null
+
+    @JvmField
+    protected var tfLight: Typeface? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        tfRegular = Typeface.createFromAsset(assets, "OpenSans-Regular.ttf")
+        tfLight = Typeface.createFromAsset(assets, "OpenSans-Light.ttf")
+    }
+
+    override fun onBackPressed() {
+        super.onBackPressed()
+        overridePendingTransition(R.anim.move_left_in_activity, R.anim.move_right_out_activity)
+    }
+
+    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
+        if (requestCode == PERMISSION_STORAGE) {
+            if (grantResults.size == 1 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
+                saveToGallery()
+            } else {
+                Toast.makeText(applicationContext, "Saving FAILED!", Toast.LENGTH_SHORT).show()
+            }
+        }
+    }
+
+    protected fun requestStoragePermission(view: View?) {
+        if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
+            Snackbar.make(view!!, "Write permission is required to save image to gallery", Snackbar.LENGTH_INDEFINITE)
+                .setAction(android.R.string.ok) {
+                    ActivityCompat.requestPermissions(
+                        this@DemoBase,
+                        arrayOf(Manifest.permission.WRITE_EXTERNAL_STORAGE),
+                        PERMISSION_STORAGE
+                    )
+                }
+                .show()
+        } else {
+            Toast.makeText(applicationContext, "Permission Required!", Toast.LENGTH_SHORT).show()
+            ActivityCompat.requestPermissions(this@DemoBase, arrayOf(Manifest.permission.WRITE_EXTERNAL_STORAGE), PERMISSION_STORAGE)
+        }
+    }
+
+    protected fun saveToGallery(chart: Chart<*>?, name: String) {
+        chart?.let {
+            if (chart.saveToGallery(name + "_" + System.currentTimeMillis(), 70))
+                Toast.makeText(applicationContext, "Saving SUCCESSFUL!", Toast.LENGTH_SHORT).show()
+            else
+                Toast.makeText(applicationContext, "Saving FAILED!", Toast.LENGTH_SHORT).show()
+        }
+    }
+
+    protected abstract fun saveToGallery()
+
+    companion object {
+        private const val PERMISSION_STORAGE = 0
+        //  Jan, Feb,... Dec
+        val months = DateFormatSymbols().months.toList().map { it.take(3) }
+    }
+}

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/notimportant/DemoBase.kt

@@ -24,7 +24,7 @@ class MainActivity : AppCompatActivity(), OnItemClickListener {
 
         // initialize the utilities
         Utils.init(this)
-        val adapter = MyAdapter(this, menuItems)
+        val adapter = MenuAdapter(this, menuItems)
         val lv = findViewById<ListView>(R.id.listViewMain)
         lv.adapter = adapter
         lv.onItemClickListener = this

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/notimportant/MainActivity.kt

@@ -0,0 +1,50 @@
+package com.xxmassdeveloper.mpchartexample.notimportant
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.graphics.Typeface
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ArrayAdapter
+import android.widget.TextView
+import com.xxmassdeveloper.mpchartexample.R
+
+internal class MenuAdapter(context: Context, objects: List<ContentItem<*>?>?) : ArrayAdapter<ContentItem<*>?>(context, 0, objects!!) {
+    private val mTypeFaceLight: Typeface = Typeface.createFromAsset(context.assets, "OpenSans-Light.ttf")
+    private val mTypeFaceRegular: Typeface = Typeface.createFromAsset(context.assets, "OpenSans-Regular.ttf")
+
+    @SuppressLint("InflateParams")
+    override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
+        val c = getItem(position)
+
+        val holder = ViewHolder()
+
+        val inflatedView = if (c != null && c.isSection) {
+            LayoutInflater.from(context).inflate(R.layout.list_item_section, null)
+        } else {
+            LayoutInflater.from(context).inflate(R.layout.list_item, null)
+        }
+
+        holder.tvName = inflatedView.findViewById(R.id.tvName)
+        holder.tvDesc = inflatedView.findViewById(R.id.tvDesc)
+
+        inflatedView.tag = holder
+
+        if (c != null && c.isSection)
+            holder.tvName?.setTypeface(mTypeFaceRegular)
+        else
+            holder.tvName?.setTypeface(mTypeFaceLight)
+        holder.tvDesc?.setTypeface(mTypeFaceLight)
+
+        holder.tvName?.text = c?.name
+        holder.tvDesc?.text = c?.desc
+
+        return inflatedView
+    }
+
+    private inner class ViewHolder {
+        var tvName: TextView? = null
+        var tvDesc: TextView? = null
+    }
+}