Kotlin DemoBase

Author: hannesa2

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

@@ -0,0 +1,89 @@
+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
+
+abstract class DemoBase : AppCompatActivity(), ActivityCompat.OnRequestPermissionsResultCallback {
+    @JvmField
+    protected val months: Array<String> = arrayOf(
+        "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Okt", "Nov", "Dec"
+    )
+
+    @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
+    }
+}