[1.7.0-feature] 委托封装sp优化

Author: crazyqiang

app/src/main/kotlin/org/ninetripods/mq/study/activity/SharedPreferencesActivity.kt

@@ -3,8 +3,7 @@ package org.ninetripods.mq.study.activity
 import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
 import org.ninetripods.mq.study.kotlin.ktx.log
-import org.ninetripods.mq.study.util.sp.FirPreferences
-import org.ninetripods.mq.study.util.sp.SecPreferences
+import org.ninetripods.mq.study.util.sp.CommonPreferences
 
 /**
  * SharedPreferences使用kotlin委托方式实现：[org.ninetripods.mq.study.util.sp.SharedPreferencesDelegate]
@@ -15,20 +14,21 @@ class SharedPreferencesActivity : AppCompatActivity() {
     /**
      * 支持按不同文件名进行存值
      */
-    private val firSp = FirPreferences(this)
-    private val secSp = SecPreferences(this)
+    private val spInfo = CommonPreferences(this)
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
         //存值
-        firSp.isShow = true
-        firSp.name = "小马快跑"
+        spInfo.isShow = true
+        spInfo.name = "小马快跑"
         //存值
-        secSp.age = 18
-        secSp.cost = 123.4f
+        spInfo.age = 18
+        spInfo.cost = 123.4f
+        spInfo.setString = setOf("一", "二", "三")
         //取值
-        log("first: isShow -> ${firSp.isShow}, name -> ${firSp.name}")
-        log("second: age -> ${secSp.age}, cost -> ${secSp.cost}")
+        log("isShow -> ${spInfo.isShow}, name -> ${spInfo.name}")
+        log("age -> ${spInfo.age}, cost -> ${spInfo.cost}，setString -> ${spInfo.setString}")
+
     }
 }

app/src/main/kotlin/org/ninetripods/mq/study/util/sp/SharedPreferencesDelegate.kt

@@ -20,7 +20,7 @@ class SharedPreferencesDelegate<T>(
     private val key: String? = null,
 ) : ReadWriteProperty<Any?, T> {
 
-    private val sp: SharedPreferences by lazy {
+    private val sp: SharedPreferences by lazy(LazyThreadSafetyMode.NONE) {
         context.getSharedPreferences(spName, Context.MODE_PRIVATE)
     }
 
@@ -54,24 +54,24 @@ class SharedPreferencesDelegate<T>(
     }
 }
 
-class FirPreferences(context: Context) {
+class CommonPreferences(context: Context) {
     companion object {
-        const val SP_NAME = "FIR_SP_NAME"
+        /**
+         * 通过传入不同的SP文件名来存储到不同的XML中
+         */
+        const val FIR_SP_NAME = "FIR_SP_NAME" //文件名1
+        const val SEC_SP_NAME = "SEC_SP_NAME"//文件名2
     }
 
-    var isShow by SharedPreferencesDelegate(context, SP_NAME, false, "key_is_show")
+    var isShow by SharedPreferencesDelegate(context, FIR_SP_NAME, false, "key_is_show")
 
     //这里没有用key值，则会默认使用属性名来当做key值
-    var name by SharedPreferencesDelegate(context, SP_NAME, "")
-}
-
-class SecPreferences(context: Context) {
-    companion object {
-        const val SP_NAME = "SEC_SP_NAME"
-    }
+    var name by SharedPreferencesDelegate(context, FIR_SP_NAME, "")
 
-    var age by SharedPreferencesDelegate(context, SP_NAME, 0, "key_age")
+    var age by SharedPreferencesDelegate(context, SEC_SP_NAME, 0, "key_age")
 
     //这里没有用key值，则会默认使用属性名来当做key值
-    var cost by SharedPreferencesDelegate(context, SP_NAME, 0.0f)
-}
+    var cost by SharedPreferencesDelegate(context, SEC_SP_NAME, 0.0f)
+
+    var setString by SharedPreferencesDelegate(context, SEC_SP_NAME, setOf("1", "2", "3"))
+}