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package com.zx.xiaohui.helper
import android.annotation.SuppressLint
import android.content.Context
import android.content.SharedPreferences
import com.zx.xiaohui.App
import kotlin.reflect.KProperty
class Pref<T>(val name: String, private val default: T) {
private val prefs: SharedPreferences by lazy { App.instance.applicationContext.getSharedPreferences(name, Context.MODE_PRIVATE) }
operator fun getValue(thisRef: Any?, property: KProperty<*>): T {
return getSharePreferences(name, default)
}
operator fun setValue(thisRef: Any?, property: KProperty<*>, value: T) {
putSharePreferences(name, value)
}
@SuppressLint("CommitPrefEdits")
private fun putSharePreferences(name: String, value: T) = with(prefs.edit()) {
when (value) {
is Long -> putLong(name, value)
is String -> putString(name, value)
is Int -> putInt(name, value)
is Boolean -> putBoolean(name, value)
is Float -> putFloat(name, value)
else -> throw IllegalArgumentException("This type of data cannot be saved!")
}.apply()
}
@Suppress("UNCHECKED_CAST")
private fun getSharePreferences(name: String, default: T): T = with(prefs) {
val res: Any? = when (default) {
is String -> getString(name,default)
is Long -> getLong(name, default)
is Int -> getInt(name, default)
is Boolean -> getBoolean(name, default)
is Float -> getFloat(name, default)
else -> throw IllegalArgumentException("This type of data cannot be saved!")
}
return res as T
}
}
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