the android toast use single instance

android/src/main/kotlin/io/github/ponnamkarthik/toast/fluttertoast/FluttertoastPlugin.kt

 package io.github.ponnamkarthik.toast.fluttertoast
 package io.github.ponnamkarthik.toast.fluttertoast
 
 
 import android.content.Context
 import android.content.Context
-import android.util.Log
-import android.view.Gravity
-import android.widget.Toast
 import android.graphics.Color
 import android.graphics.Color
+import android.graphics.Paint
 import android.graphics.drawable.ColorDrawable
 import android.graphics.drawable.ColorDrawable
-import android.graphics.drawable.Drawable
+import android.graphics.drawable.ShapeDrawable
+import android.graphics.drawable.shapes.RoundRectShape
+import android.view.Gravity
+import android.widget.TextView
+import android.widget.Toast
+import io.flutter.plugin.common.MethodCall
 import io.flutter.plugin.common.MethodChannel
 import io.flutter.plugin.common.MethodChannel
 import io.flutter.plugin.common.MethodChannel.MethodCallHandler
 import io.flutter.plugin.common.MethodChannel.MethodCallHandler
 import io.flutter.plugin.common.MethodChannel.Result
 import io.flutter.plugin.common.MethodChannel.Result
-import io.flutter.plugin.common.MethodCall
 import io.flutter.plugin.common.PluginRegistry.Registrar
 import io.flutter.plugin.common.PluginRegistry.Registrar
-import android.widget.TextView
-import android.graphics.Paint
-import android.graphics.drawable.ShapeDrawable
-import android.graphics.drawable.shapes.RoundRectShape
-
 
 
 
 
+class FluttertoastPlugin(context: Context) : MethodCallHandler {
 
 
+    var ctx: Context? = context
 
 
-class FluttertoastPlugin(context: Context): MethodCallHandler {
 
 
-  var ctx: Context? = context
-    var toast: Toast? = null
     companion object {
     companion object {
+        var toast: Toast? = null
         @JvmStatic
         @JvmStatic
         fun registerWith(registrar: Registrar): Unit {
         fun registerWith(registrar: Registrar): Unit {
             val channel = MethodChannel(registrar.messenger(), "PonnamKarthik/fluttertoast")
             val channel = MethodChannel(registrar.messenger(), "PonnamKarthik/fluttertoast")
-
             channel.setMethodCallHandler(FluttertoastPlugin(registrar.context()))
             channel.setMethodCallHandler(FluttertoastPlugin(registrar.context()))
         }
         }
     }
     }
 
 
+    var defaultTextColor: Int = Color.TRANSPARENT
 
 
     override fun onMethodCall(call: MethodCall, result: Result): Unit {
     override fun onMethodCall(call: MethodCall, result: Result): Unit {
 
 
-    if (call.method.equals("showToast")) {
+        if (call.method == "showToast") {
+
             val msg: String = call.argument("msg")
             val msg: String = call.argument("msg")
             val length: String = call.argument("length")
             val length: String = call.argument("length")
             val gravity: String = call.argument("gravity")
             val gravity: String = call.argument("gravity")
             val bgcolor: String = call.argument("bgcolor")
             val bgcolor: String = call.argument("bgcolor")
             val textcolor: String = call.argument("textcolor")
             val textcolor: String = call.argument("textcolor")
 
 
-        val toast: Toast = this.toast?:Toast.makeText(ctx, msg, Toast.LENGTH_SHORT);
-        this.toast = toast
+            val toast: Toast = FluttertoastPlugin.toast ?: Toast.makeText(ctx, msg, Toast.LENGTH_SHORT);
+            FluttertoastPlugin.toast = toast
             toast.setText(msg)
             toast.setText(msg)
-      if(length.equals("long")) {
+            if (length.equals("long")) {
                 toast.duration = Toast.LENGTH_LONG
                 toast.duration = Toast.LENGTH_LONG
             } else {
             } else {
                 toast.duration = Toast.LENGTH_SHORT
                 toast.duration = Toast.LENGTH_SHORT
             }
             }
 
 
-        if(gravity.equals("top")) {
-            toast.setGravity(Gravity.TOP, 0, 100)
-        } else if(gravity.equals("center")) {
-            toast.setGravity(Gravity.CENTER, 0, 0)
-        } else {
-            toast.setGravity(Gravity.BOTTOM, 0, 100)
+            when (gravity) {
+                "top" -> toast.setGravity(Gravity.TOP, 0, 100)
+                "center" -> toast.setGravity(Gravity.CENTER, 0, 0)
+                else -> toast.setGravity(Gravity.BOTTOM, 0, 100)
             }
             }
 
 
             val text: TextView = toast.view.findViewById(android.R.id.message)
             val text: TextView = toast.view.findViewById(android.R.id.message)
-        if(bgcolor != "null") {
+            if (defaultTextColor == 0) {
+                defaultTextColor = text.currentTextColor
+            }
+            if (bgcolor != "null") {
 
 
                 try {
                 try {
 
 
@@ -78,13 +77,17 @@ class FluttertoastPlugin(context: Context): MethodCallHandler {
                 } catch (e: Exception) {
                 } catch (e: Exception) {
                     e.printStackTrace()
                     e.printStackTrace()
                 }
                 }
+            } else {
+                text.setBackgroundDrawable(ColorDrawable(Color.TRANSPARENT))
             }
             }
-        if(textcolor != "null") {
+            if (textcolor != "null") {
                 try {
                 try {
                     text.setTextColor(Color.parseColor(textcolor))
                     text.setTextColor(Color.parseColor(textcolor))
                 } catch (e: Exception) {
                 } catch (e: Exception) {
                     e.printStackTrace()
                     e.printStackTrace()
                 }
                 }
+            } else {
+                text.setTextColor(defaultTextColor)
             }
             }
 
 
             toast.show()
             toast.show()