style: update README.md

pref: lazy load object
pref: Modify the param of AesExtension's encrypt and decrypt method

Author: pslilysm

README.md

@@ -1,5 +1,6 @@
 # sdk-ktx
-A lightweight SDK used to provide utils function and various extension
+A lightweight SDK for Android used to provide utils function and various extension.  
+Only support for Kotlin.
 
 ## usage
 

sdk-library/src/main/java/pers/pslilysm/sdk_library/extention/AesExtension.kt

@@ -2,6 +2,8 @@ package pers.pslilysm.sdk_library.extention
 
 import android.util.Base64
 import java.nio.charset.StandardCharsets
+import java.security.Key
+import java.security.spec.AlgorithmParameterSpec
 import javax.crypto.Cipher
 import javax.crypto.spec.IvParameterSpec
 import javax.crypto.spec.SecretKeySpec
@@ -82,18 +84,14 @@ fun String.decrypt(): String {
  *
  * @param mode The name of the cipher mode, e.g.,
  * <i>DES/CBC/PKCS5Padding</i>.
- * @param secretKey The secret key
- * @param ivKey The iv key
+ * @param key The encryption key
+ * @param params The algorithm parameters
  * @return A encrypted Base64 String
  */
-fun String.encrypt(mode: String, secretKey: String, ivKey: String): String {
+fun String.encrypt(mode: String, key: Key, params: AlgorithmParameterSpec): String {
     return try {
         val cipher = Cipher.getInstance(mode)
-        cipher.init(
-            Cipher.ENCRYPT_MODE,
-            SecretKeySpec(secretKey.toByteArray(), "AES"),
-            IvParameterSpec(ivKey.toByteArray())
-        )
+        cipher.init(Cipher.ENCRYPT_MODE, key, params)
         val bytes = cipher.doFinal(toByteArray(StandardCharsets.UTF_8))
         Base64.encodeToString(bytes, Base64.NO_WRAP)
     } catch (e: Exception) {
@@ -106,18 +104,14 @@ fun String.encrypt(mode: String, secretKey: String, ivKey: String): String {
  *
  * @param mode The name of the cipher mode, e.g.,
  * <i>DES/CBC/PKCS5Padding</i>.
- * @param secretKey The secret key
- * @param ivKey The iv key
+ * @param key The encryption key
+ * @param params The algorithm parameters
  * @return A decrypted Base64 String
  */
-fun String.decrypt(mode: String, secretKey: String, ivKey: String): String {
+fun String.decrypt(mode: String, key: Key, params: AlgorithmParameterSpec): String {
     return try {
         val cipher = Cipher.getInstance(mode)
-        cipher.init(
-            Cipher.DECRYPT_MODE,
-            SecretKeySpec(secretKey.toByteArray(), "AES"),
-            IvParameterSpec(ivKey.toByteArray())
-        )
+        cipher.init(Cipher.DECRYPT_MODE, key, params)
         String(cipher.doFinal(Base64.decode(this, Base64.NO_WRAP)), StandardCharsets.UTF_8)
     } catch (e: Exception) {
         throw e.rethrow()

sdk-library/src/main/java/pers/pslilysm/sdk_library/extention/FormatterExtension.kt

@@ -20,45 +20,54 @@ const val MB_SIZE = 1024f * 1024
 
 const val KB_SIZE = 1024
 
-private val sDateFormatTLS: ThreadLocal<SimpleDateFormat> =
+private val sDateFormatTLS: ThreadLocal<SimpleDateFormat> by lazy {
     object : ThreadLocal<SimpleDateFormat>() {
         override fun initialValue(): SimpleDateFormat {
             return SimpleDateFormat("", Locale.getDefault())
         }
     }
-private val sDecimalFormatTLS: ThreadLocal<DecimalFormat> =
+}
+
+private val sDecimalFormatTLS: ThreadLocal<DecimalFormat> by lazy {
     object : ThreadLocal<DecimalFormat>() {
         override fun initialValue(): DecimalFormat {
             return DecimalFormat()
         }
     }
+}
 
 val simpleDateFormat: SimpleDateFormat get() = sDateFormatTLS.get() as SimpleDateFormat
 val decimalFormat: DecimalFormat get() = sDecimalFormatTLS.get() as DecimalFormat
 
-val pattern_yyyyMMddHHmmssDateFormat: SimpleDateFormat get() = simpleDateFormat.apply {
-    applyPattern("yyyy-MM-dd HH:mm:ss")
-}
+val pattern_yyyyMMddHHmmssDateFormat: SimpleDateFormat
+    get() = simpleDateFormat.apply {
+        applyPattern("yyyy-MM-dd HH:mm:ss")
+    }
 
-val pattern_MMddDateFormat: SimpleDateFormat get() = simpleDateFormat.apply {
-    applyPattern("MM-dd")
-}
+val pattern_MMddDateFormat: SimpleDateFormat
+    get() = simpleDateFormat.apply {
+        applyPattern("MM-dd")
+    }
 
-val pattern_HHmmssDateFormat: SimpleDateFormat get() = simpleDateFormat.apply {
-    applyPattern("HH:mm:ss")
-}
+val pattern_HHmmssDateFormat: SimpleDateFormat
+    get() = simpleDateFormat.apply {
+        applyPattern("HH:mm:ss")
+    }
 
-val pattern_000DecimalFormat: DecimalFormat get() = decimalFormat.apply {
-    applyPattern("#.000")
-}
+val pattern_000DecimalFormat: DecimalFormat
+    get() = decimalFormat.apply {
+        applyPattern("#.000")
+    }
 
-val pattern_00DecimalFormat: DecimalFormat get() = decimalFormat.apply {
-    applyPattern("#.00")
-}
+val pattern_00DecimalFormat: DecimalFormat
+    get() = decimalFormat.apply {
+        applyPattern("#.00")
+    }
 
-val pattern_0DecimalFormat: DecimalFormat get() = decimalFormat.apply {
-    applyPattern("#.0")
-}
+val pattern_0DecimalFormat: DecimalFormat
+    get() = decimalFormat.apply {
+        applyPattern("#.0")
+    }
 
 /**
  * @return A formatted file size string with pattern "#.00"

sdk-library/src/main/java/pers/pslilysm/sdk_library/extention/FragmentExtension.kt

@@ -14,14 +14,16 @@ import pers.pslilysm.sdk_library.util.reflection.ReflectionUtil
  * @since 2.2.0
  */
 
-val sViewPager2Finder: FragmentFinder = object : FragmentFinder {
-    override fun <T : Fragment?> findFragment(
-        fmtClass: Class<out Fragment?>,
-        vararg args: Any?
-    ): T? {
-        val manager = args[0] as FragmentManager
-        val position = args[1] as Int
-        return manager.findFragmentByTag("f$position") as T?
+val sViewPager2Finder: FragmentFinder by lazy {
+    object : FragmentFinder {
+        override fun <T : Fragment?> findFragment(
+            fmtClass: Class<out Fragment?>,
+            vararg args: Any?
+        ): T? {
+            val manager = args[0] as FragmentManager
+            val position = args[1] as Int
+            return manager.findFragmentByTag("f$position") as T?
+        }
     }
 }
 

sdk-library/src/main/java/pers/pslilysm/sdk_library/extention/GsonExtension.kt

@@ -20,26 +20,32 @@ import pers.pslilysm.sdk_library.util.reflection.ReflectionUtil
  * @since 2.2.0
  */
 
-private val strategy: ExclusionStrategy = object : ExclusionStrategy {
-    override fun shouldSkipField(f: FieldAttributes): Boolean {
-        return f.getAnnotation(GsonExclude::class.java) != null
-    }
+private val strategy: ExclusionStrategy by lazy {
+    object : ExclusionStrategy {
+        override fun shouldSkipField(f: FieldAttributes): Boolean {
+            return f.getAnnotation(GsonExclude::class.java) != null
+        }
 
-    override fun shouldSkipClass(clazz: Class<*>): Boolean {
-        return clazz.getAnnotation(GsonExclude::class.java) != null
+        override fun shouldSkipClass(clazz: Class<*>): Boolean {
+            return clazz.getAnnotation(GsonExclude::class.java) != null
+        }
     }
 }
 
-private val sPrettyGson: Gson = GsonBuilder()
-    .setPrettyPrinting()
-    .disableHtmlEscaping()
-    .setExclusionStrategies(strategy)
-    .create()
+private val sPrettyGson: Gson by lazy {
+    GsonBuilder()
+        .setPrettyPrinting()
+        .disableHtmlEscaping()
+        .setExclusionStrategies(strategy)
+        .create()
+}
 
-private val sGson: Gson = GsonBuilder()
-    .disableHtmlEscaping()
-    .setExclusionStrategies(strategy)
-    .create()
+private val sGson: Gson by lazy {
+    GsonBuilder()
+        .disableHtmlEscaping()
+        .setExclusionStrategies(strategy)
+        .create()
+}
 
 /**
  * Serialize object to json

sdk-library/src/main/java/pers/pslilysm/sdk_library/util/concurrent/GlobalExecutors.kt

@@ -20,7 +20,7 @@ import java.util.concurrent.atomic.AtomicInteger
 object GlobalExecutors {
     private val sIONum = AtomicInteger()
     private val sComputeNum = AtomicInteger()
-    private val lazyGlobalIOExecutor by lazy {
+    private val sIOExecutor by lazy {
         val corePoolSize = 1
         val maxPoolSize = Runtime.getRuntime().availableProcessors() * 10
         val keepAliveTimeSeconds = 2
@@ -56,7 +56,7 @@ object GlobalExecutors {
         workQueue.setExecutor(ioES)
         ScheduledThreadPoolExecutorWrapper(ioES)
     }
-    private val lazyGlobalComputeExecutor by lazy {
+    private val sComputeExecutor by lazy {
         val corePoolSize = 1
         val maxPoolSize = Runtime.getRuntime().availableProcessors()
         val keepAliveTimeSeconds = 2
@@ -104,12 +104,12 @@ object GlobalExecutors {
     /**
      * @return a global io executor, the core pool size is `cpu cores * 5`
      */
-    val io: ScheduledExecutorService get() = lazyGlobalIOExecutor
+    val io: ScheduledExecutorService get() = sIOExecutor
 
     /**
      * @return a global compute executor, the core pool size is cpu cores
      */
-    val compute: ScheduledExecutorService get() = lazyGlobalComputeExecutor
+    val compute: ScheduledExecutorService get() = sComputeExecutor
 
     /**
      * @return a global main executor, all runnable will run in main thread

sdk-library/src/main/java/pers/pslilysm/sdk_library/util/reflection/ReflectionUtil.kt

@@ -15,9 +15,9 @@ import java.util.*
  * @since 1.0.0
  */
 object ReflectionUtil {
-    private val sConstructors: MutableMap<ConstructorKey, Constructor<*>> = ArrayMap()
-    private val sFields: MutableMap<FieldKey, Field> = ArrayMap()
-    private val sMethods: MutableMap<MethodKey, Method> = ArrayMap()
+    private val sConstructors: MutableMap<ConstructorKey, Constructor<*>> by lazy { ArrayMap() }
+    private val sFields: MutableMap<FieldKey, Field> by lazy { ArrayMap() }
+    private val sMethods: MutableMap<MethodKey, Method> by lazy { ArrayMap() }
     private val sEmptyParameterTypesAndArgs = emptyArray<Any>()
 
     /**
@@ -51,9 +51,11 @@ object ReflectionUtil {
                 is String -> {
                     parameterTypes[i] = classLoader.loadClass(pt)
                 }
+
                 is Class<*> -> {
                     parameterTypes[i] = pt
                 }
+
                 else -> {
                     throw IllegalArgumentException("check your parameterTypes at pos " + i + ", type is " + pt!!.javaClass)
                 }