package cn.flightfeather.thirdapp.util
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import android.content.Context
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import android.content.SharedPreferences
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import cn.flightfeather.thirdapp.CommonApplication
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import kotlin.reflect.KProperty
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/**
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* SharedPreference对象
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* @author riku
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* Date: 2019/4/9
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*/
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class MyPreference<T>(private val keyName: String, private val default: T) {
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private val prefs:SharedPreferences by lazy { CommonApplication.getInstance().getSharedPreferences("preference", Context.MODE_PRIVATE)}
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operator fun getValue(thisRef: Any?, property: KProperty<*>): T {
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return findSharedPreferences(keyName, default)
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}
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operator fun setValue(thisRef: Any?, property: KProperty<*>, value: T) {
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putSharedPreferences(keyName, value)
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}
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fun get(): T {
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return findSharedPreferences(keyName, default)
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}
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fun set(value: T) {
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putSharedPreferences(keyName, value)
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}
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@Suppress("UNCHECKED_CAST")
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private fun findSharedPreferences(name: String, default: T): T = with(prefs) {
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val res: Any = when (default) {
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is Long -> getLong(name, default)
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is String -> getString(name, default)
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is Int -> getInt(name, default)
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is Boolean -> getBoolean(name, default)
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is Float -> getFloat(name, default)
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else -> throw IllegalArgumentException("Type Error, cannot be got!")
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}
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return res as T
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}
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private fun putSharedPreferences(name: String, value: T) = with(prefs.edit()) {
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when (value) {
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is Long -> putLong(name, value)
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is String -> putString(name, value)
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is Int -> putInt(name, value)
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is Boolean -> putBoolean(name, value)
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is Float -> putFloat(name, value)
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else->throw IllegalArgumentException("Type Error, cannot be saved!")
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}.apply()
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}
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}
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