Update project config

app/build.gradle

@@ -1,29 +1,41 @@
-apply plugin: 'com.android.application'
+plugins {
+    id 'com.android.application'
+    id 'org.jetbrains.kotlin.android'
+}
 
 android {
-    compileSdkVersion 22
-    buildToolsVersion '26.0.2'
+    compileSdk 31
+
     defaultConfig {
         applicationId "io.github.webbluetoothcg.bletestperipheral"
-        minSdkVersion 21
-        targetSdkVersion 22
+        minSdk 21
+        targetSdk 31
         versionCode 10
         versionName '10.0'
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
+
     buildTypes {
         release {
             minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
-    lintOptions {
-        quiet true
-        checkReleaseBuilds false
-        // if true, stop the gradle build if errors are found
-        abortOnError false
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
     }
 }
 
 dependencies {
-    compile fileTree(include: ['*.jar'], dir: 'libs')
-}
+    implementation 'androidx.core:core-ktx:1.7.0'
+    implementation 'androidx.appcompat:appcompat:1.3.0'
+    implementation 'com.google.android.material:material:1.4.0'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}

app/src/main/AndroidManifest.xml

@@ -19,13 +19,15 @@
 
     <uses-permission android:name="android.permission.BLUETOOTH"/>
     <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
+    <uses-permission android:name="android.permission.BLUETOOTH_CONNECT"/>
 
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:theme="@style/AppTheme" >
         <activity
+            android:exported="true"
             android:name=".Peripherals"
             android:label="@string/app_name">
             <intent-filter>
@@ -40,4 +42,4 @@
                 android:parentActivityName=".Peripherals"/>
     </application>
 
-</manifest>
+</manifest>

build.gradle

@@ -1,20 +1,10 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
-
-buildscript {
-    repositories {
-        jcenter()
-        maven { url 'https://maven.google.com' }
-    }
-    dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0'
-
-        // NOTE: Do not place your application dependencies here; they belong
-        // in the individual module build.gradle files
-    }
+plugins {
+    id 'com.android.application' version '7.1.2' apply false
+    id 'com.android.library' version '7.1.2' apply false
+    id 'org.jetbrains.kotlin.android' version '1.5.30' apply false
 }
 
-allprojects {
-    repositories {
-        jcenter()
-    }
-}
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}

gradle.properties

@@ -10,9 +10,20 @@
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
 # Default value: -Xmx10248m -XX:MaxPermSize=256m
-# org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
+org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
 
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
+
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Kotlin code style for this project: "official" or "obsolete":
+kotlin.code.style=official
+# Enables namespacing of each library's R class so that its R class includes only the
+# resources declared in the library itself and none from the library's dependencies,
+# thereby reducing the size of the R class for that library
+android.nonTransitiveRClass=true

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Tue Nov 07 13:33:09 AEDT 2017
+#Wed Mar 09 07:54:45 CST 2022
 distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
 distributionPath=wrapper/dists
-zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+zipStoreBase=GRADLE_USER_HOME