Switch to AndroidX and update compileSdkVersion

android/build.gradle

@@ -22,7 +22,7 @@ rootProject.allprojects {
 apply plugin: 'com.android.library'
 apply plugin: 'com.android.library'
 
 
 android {
 android {
-    compileSdkVersion 27
+    compileSdkVersion 28
 
 
     defaultConfig {
     defaultConfig {
         minSdkVersion 16
         minSdkVersion 16
@@ -34,5 +34,5 @@ android {
 }
 }
 
 
 dependencies {
 dependencies {
-    implementation  'com.android.support:appcompat-v7:27.1.1'
+    implementation  'androidx.appcompat:appcompat:1.0.2'
 }
 }

android/src/main/java/io/github/ponnamkarthik/toast/fluttertoast/FluttertoastPlugin.java

 package io.github.ponnamkarthik.toast.fluttertoast;
 package io.github.ponnamkarthik.toast.fluttertoast;
 
 
 import android.content.Context;
 import android.content.Context;
-import android.content.ContextWrapper;
-import android.graphics.Color;
 import android.graphics.PorterDuff;
 import android.graphics.PorterDuff;
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.Drawable;
 import android.os.Build;
 import android.os.Build;
-import android.support.v4.content.ContextCompat;
-import android.util.Log;
 import android.view.Gravity;
 import android.view.Gravity;
 import android.widget.TextView;
 import android.widget.TextView;
 import android.widget.Toast;
 import android.widget.Toast;
 
 
+import androidx.core.content.ContextCompat;
 import io.flutter.plugin.common.MethodCall;
 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;