updating compile SDK to 31

build.gradle

@@ -2,7 +2,7 @@
 
 buildscript {
     ext {
-        propCompileSdkVersion = 30
+        propCompileSdkVersion = 31
         propMinSdkVersion = 21
         propTargetSdkVersion = propCompileSdkVersion
         propVersionCode = 1

commons/build.gradle

@@ -9,6 +9,7 @@ android {
     defaultConfig {
         minSdkVersion propMinSdkVersion
         targetSdkVersion propTargetSdkVersion
+        buildConfigField "int", "COMPILE_SDK_VERSION", "$propCompileSdkVersion"
     }
 
     buildTypes {

commons/src/main/kotlin/com/simplemobiletools/commons/helpers/Constants.kt

@@ -379,21 +379,31 @@ fun ensureBackgroundThread(callback: () -> Unit) {
 
 @ChecksSdkIntAtLeast(api = Build.VERSION_CODES.M)
 fun isMarshmallowPlus() = Build.VERSION.SDK_INT >= Build.VERSION_CODES.M
+
 @ChecksSdkIntAtLeast(api = Build.VERSION_CODES.N)
 fun isNougatPlus() = Build.VERSION.SDK_INT >= Build.VERSION_CODES.N
+
 @ChecksSdkIntAtLeast(api = Build.VERSION_CODES.N_MR1)
 fun isNougatMR1Plus() = Build.VERSION.SDK_INT >= Build.VERSION_CODES.N_MR1
+
 @ChecksSdkIntAtLeast(api = Build.VERSION_CODES.O)
 fun isOreoPlus() = Build.VERSION.SDK_INT >= Build.VERSION_CODES.O
+
 @ChecksSdkIntAtLeast(api = Build.VERSION_CODES.O_MR1)
 fun isOreoMr1Plus() = Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1
+
 @ChecksSdkIntAtLeast(api = Build.VERSION_CODES.P)
 fun isPiePlus() = Build.VERSION.SDK_INT >= Build.VERSION_CODES.P
+
 @ChecksSdkIntAtLeast(api = Build.VERSION_CODES.Q)
 fun isQPlus() = Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q
+
 @ChecksSdkIntAtLeast(api = Build.VERSION_CODES.R)
 fun isRPlus() = Build.VERSION.SDK_INT >= Build.VERSION_CODES.R
 
+@ChecksSdkIntAtLeast(api = Build.VERSION_CODES.S)
+fun isSPlus() = Build.VERSION.SDK_INT >= Build.VERSION_CODES.S
+
 fun getDateFormats() = arrayListOf(
     "--MM-dd",
     "yyyy-MM-dd",