Migrated to Androidx, Target Api updated to API 29.......

app/build.gradle

@@ -1,14 +1,16 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 27
+    compileSdkVersion 29
+    buildToolsVersion "29.0.2"
+
     defaultConfig {
         applicationId "com.spencerstudios.jetdb"
         minSdkVersion 16
-        targetSdkVersion 27
+        targetSdkVersion 29
         versionCode 1
         versionName "1.0"
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
         release {
@@ -20,10 +22,10 @@ android {
 
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
-    implementation 'com.android.support:appcompat-v7:27.1.1'
-    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.2'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    testImplementation 'junit:junit:4.13'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
     implementation project(':jetdblib')
 }

app/src/androidTest/java/com/spencerstudios/jetdb/ExampleInstrumentedTest.java

@@ -1,8 +1,10 @@
 package com.spencerstudios.jetdb;
 
 import android.content.Context;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -19,7 +21,7 @@ public class ExampleInstrumentedTest {
     @Test
     public void useAppContext() throws Exception {
         // Context of the app under test.
-        Context appContext = InstrumentationRegistry.getTargetContext();
+        Context appContext = ApplicationProvider.getApplicationContext();
 
         assertEquals("com.spencerstudios.jetdb", appContext.getPackageName());
     }

app/src/main/java/com/spencerstudios/jetdb/MainActivity.java

@@ -1,9 +1,12 @@
 package com.spencerstudios.jetdb;
 
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
+import androidx.appcompat.app.AppCompatActivity;
 import android.widget.TextView;
 
+import java.util.ArrayList;
+import java.util.List;
+
 import spencerstudios.com.jetdblib.JetDB;
 
 public class MainActivity extends AppCompatActivity {
@@ -19,5 +22,6 @@ protected void onCreate(Bundle savedInstanceState) {
 
        char [] chars = JetDB.getCharArray(this,"key");
 
+
     }
 }

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"
@@ -8,8 +8,8 @@
 
     <TextView
         android:id="@+id/tv"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
         />
 
-</android.support.constraint.ConstraintLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>

build.gradle

@@ -7,9 +7,8 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:3.6.1'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:2.0'
-
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files