- gradle version upgrade

- migrated to AndroidX
 - migrated to Kotlin
 - Content resolver unit test added
 - Upgraded android version to 31

app/build.gradle

@@ -1,15 +1,15 @@
 apply plugin: 'com.android.application'
+apply plugin: 'org.jetbrains.kotlin.android'
 
 android {
-    compileSdkVersion 29
-    buildToolsVersion '26.0.2'
+    compileSdkVersion 31
     defaultConfig {
         applicationId "com.appttude.h_mal.farmr"
         minSdkVersion 21
-        targetSdkVersion 29
+        targetSdkVersion 31
         versionCode 1
         versionName "1.0"
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
         vectorDrawables.useSupportLibrary = true
     }
     buildTypes {
@@ -21,15 +21,16 @@ android {
 }
 
 dependencies {
-    implementation 'com.android.support:support-v4:26.1.0'
-    implementation 'com.android.support:support-vector-drawable:26.1.0'
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
-        exclude group: 'com.android.support', module: 'support-annotations'
-    })
-    implementation 'com.android.support:appcompat-v7:26.1.0'
-    implementation 'com.android.support:design:26.1.0'
-    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
+    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
+    implementation 'androidx.vectordrawable:vectordrawable:1.0.0'
+    implementation 'androidx.core:core-ktx:1.1.0'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0'
+    implementation 'androidx.appcompat:appcompat:1.0.0'
+    implementation 'com.google.android.material:material:1.0.0'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
     implementation 'com.ajts.androidmads.SQLite2Excel:library:1.0.2'
-    testCompile 'junit:junit:4.12'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test:core-ktx:1.4.0'
+    androidTestImplementation 'androidx.test:rules:1.4.0'
 }