updated to API 29, androidx, and gradle.

BLEscannerDemo/app/build.gradle

@@ -1,14 +1,14 @@
 apply plugin: 'com.android.application'
 
 android {
- compileSdkVersion 28
+ compileSdkVersion 29
  defaultConfig {
  applicationId "edu.cs4730.blescannerdemo"
- minSdkVersion 21
- targetSdkVersion 28
+ minSdkVersion 22
+ targetSdkVersion 29
  versionCode 1
  versionName "1.0"
- testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+ testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
  }
  buildTypes {
  release {
@@ -20,5 +20,5 @@ android {
 
 dependencies {
  implementation fileTree(dir: 'libs', include: ['*.jar'])
- implementation 'com.android.support:appcompat-v7:28.0.0'
+ implementation 'androidx.appcompat:appcompat:1.1.0'
 }

BLEscannerDemo/app/src/main/java/edu/cs4730/blescannerdemo/GattFragment.java

@@ -11,7 +11,7 @@
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
-import android.support.v4.app.Fragment;
+import androidx.fragment.app.Fragment;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;

BLEscannerDemo/app/src/main/java/edu/cs4730/blescannerdemo/Help_Fragment.java

@@ -3,23 +3,20 @@
 import android.Manifest;
 import android.app.Activity;
 import android.bluetooth.BluetoothAdapter;
-import android.bluetooth.BluetoothDevice;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.os.Bundle;
-import android.support.v4.app.ActivityCompat;
-import android.support.v4.app.Fragment;
-import android.support.v4.content.ContextCompat;
+import androidx.core.app.ActivityCompat;
+import androidx.fragment.app.Fragment;
+import androidx.core.content.ContextCompat;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Button;
 import android.widget.TextView;
 
-import java.util.Set;
-
 /**
  * A simple {@link Fragment} subclass.
  */

BLEscannerDemo/app/src/main/java/edu/cs4730/blescannerdemo/ListenerFragment.java

@@ -2,7 +2,6 @@
 
 
 import android.bluetooth.BluetoothAdapter;
-import android.bluetooth.BluetoothClass;
 import android.bluetooth.BluetoothDevice;
 import android.bluetooth.BluetoothManager;
 import android.bluetooth.le.BluetoothLeScanner;
@@ -12,8 +11,8 @@
 import android.bluetooth.le.ScanSettings;
 import android.content.Context;
 import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.v4.app.Fragment;
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;

BLEscannerDemo/app/src/main/java/edu/cs4730/blescannerdemo/MainActivity.java

@@ -1,9 +1,9 @@
 package edu.cs4730.blescannerdemo;
 
 import android.bluetooth.BluetoothDevice;
-import android.support.v4.app.FragmentManager;
-import android.support.v4.app.FragmentTransaction;
-import android.support.v7.app.AppCompatActivity;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentTransaction;
+import androidx.appcompat.app.AppCompatActivity;
 import android.os.Bundle;
 //https://arnhem.luminis.eu/creating-a-bluetooth-low-energy-central-implementation-on-android/
 public class MainActivity extends AppCompatActivity implements Help_Fragment.OnFragmentInteractionListener,

BLEscannerDemo/app/src/main/java/edu/cs4730/blescannerdemo/myArrayAdapter.java

@@ -2,8 +2,8 @@
 
 import android.app.Activity;
 import android.bluetooth.BluetoothDevice;
-import android.content.Context;
-import android.support.annotation.NonNull;
+
+import androidx.annotation.NonNull;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;

BLEscannerDemo/app/src/main/res/values/styles.xml

@@ -1,7 +1,7 @@
 <resources>
 
  <!-- Base application theme. -->
- <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+ <style name="AppTheme" parent="Theme.AppCompat.DayNight">
  <!-- Customize your theme here. -->
  <item name="colorPrimary">@color/colorPrimary</item>
  <item name="colorPrimaryDark">@color/colorPrimaryDark</item>

BLEscannerDemo/build.gradle

@@ -7,7 +7,7 @@ buildscript {
  jcenter()
  }
  dependencies {
- classpath 'com.android.tools.build:gradle:3.3.1'
+ classpath 'com.android.tools.build:gradle:3.5.3'
 
 
  // NOTE: Do not place your application dependencies here; they belong

BLEscannerDemo/gradle.properties

@@ -9,6 +9,8 @@
 
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
+android.enableJetifier=true
+android.useAndroidX=true
 org.gradle.jvmargs=-Xmx1536m
 
 # When configured, Gradle will run in incubating parallel mode.

BLEscannerDemo/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Wed Feb 20 07:52:39 MST 2019
+#Thu Feb 06 08:39:22 MST 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\:https://services.gradle.org/distributions/gradle-4.10.1-all.zip
+distributionUrl=https\:https://services.gradle.org/distributions/gradle-5.4.1-all.zip