Use AndroidX libraries

app/build.gradle

@@ -1,15 +1,21 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 29
+    compileSdkVersion 33
     defaultConfig {
         applicationId "com.adityaarora.liveedgedetection"
         minSdkVersion 21
-        targetSdkVersion 29
+        targetSdkVersion 33
         versionCode 1
         versionName "1.0"
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
     buildTypes {
         release {
             minifyEnabled false
@@ -20,10 +26,11 @@ android {
 
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
-    implementation 'com.android.support:appcompat-v7:26.1.0'
-    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
-    testImplementation 'junit:junit:4.13'
-    androidTestImplementation 'com.android.support.test:runner:1.0.2'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test:runner:1.5.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
     implementation project(':liveedgedetection')
 }

app/src/androidTest/java/com/adityaarora/liveedgedetection/ExampleInstrumentedTest.java

@@ -1,8 +1,9 @@
 package com.adityaarora.liveedgedetection;
 
 import android.content.Context;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.platform.app.InstrumentationRegistry;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -19,7 +20,7 @@ public class ExampleInstrumentedTest {
     @Test
     public void useAppContext() throws Exception {
         // Context of the app under test.
-        Context appContext = InstrumentationRegistry.getTargetContext();
+        Context appContext = InstrumentationRegistry.getInstrumentation().getContext();
 
         assertEquals("com.adityaarora.liveedgedetection", appContext.getPackageName());
     }

app/src/main/java/com/adityaarora/liveedgedetection/MainActivity.java

@@ -4,9 +4,10 @@
 import android.content.Intent;
 import android.graphics.Bitmap;
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
 import android.widget.ImageView;
 
+import androidx.appcompat.app.AppCompatActivity;
+
 import com.adityaarora.liveedgedetection.activity.ScanActivity;
 import com.adityaarora.liveedgedetection.constants.ScanConstants;
 import com.adityaarora.liveedgedetection.util.ScanUtils;

app/src/main/res/layout/activity_main.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
@@ -12,4 +12,4 @@
         android:layout_height="match_parent"
         android:scaleType="center" />
 
-</android.support.constraint.ConstraintLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>

build.gradle

@@ -7,7 +7,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.6.3'
+        classpath 'com.android.tools.build:gradle:3.6.4'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
 
         // NOTE: Do not place your application dependencies here; they belong