Kotlin中使用SharedPreferences

Kotlin中使用SharedPreferences

创建类

object ShareUtil {

    private var sps: SharedPreferences?=null

    private fun getSps(context: Context):SharedPreferences{
        if(sps==null){
            sps=context.getSharedPreferences("default",Context.MODE_PRIVATE)
        }
        return sps!!
    }

    fun putShareString(key:String,value:String?,context:Context){
        if(!value.isNullOrBlank()){
            var editor:SharedPreferences.Editor=getSps(context).edit()
            editor.putString(key,value)
            editor.commit()
        }
    }

    fun getShareString(key:String,context:Context):String?{
        if(!key.isNullOrBlank()){
            var sps:SharedPreferences=getSps(context)
            return sps.getString(key,null)
        }
        return null
    }
}

使用方法

 putShareString("rid",id,getContext())
 getShareString("rid",getContext())