【Android】SharedPreference简便写法

SharedPreference简便写法

​​kotlin​​

​​写法1:​​

val sp = ConstantsConfig.getContext().getSharedPreferences("xxx", 0)

var userTerminal = sp.getString(KEY_USER_XXX, "?")!!
  set(value) {
      if (value != field) {
      sp.edit().putString(KEY_USER_XXX, value).apply()
      field = value
    }
  }

​​写法2:​​

@SuppressLint("SharedPreferences")
private val sp: SharedPreferences = MainApplication.application.getSharedPreferences("out_escort", Context.MODE_PRIVATE)

fun setString(entry: String, value: String) = sp.edit().putString(entry, value).commit()
fun setBoolean(entry: String, value: Boolean) = sp.edit().putBoolean(entry, value).commit()
...

​​调用:​​

fun setXXXInfo(xxx: String) = setString(XXX_INFO, xxx)
fun getXXXInfo() = getString(XXX_INFO)
fun clearXXXInfo() = clear(XXX_INFO)

fun setXxx(xxx: XXX) {
    this.xxx = xxx
    AppPreferences.setXxx(JsonUtil.toJson(xxx))
}

fun geXxx(): Xxx? {
    this.xxx?.let {
        return it
    }?: run{
        val json = AppPreferences.getXxx()
        if (!TextUtils.isEmpty(json)) {
            xxx = JsonUtil.fromJson(json!!, Xxx::class.java)
        }
    }
    return xxx
}