Sharedpreferences Package Class

Today is free, the file configuration Sharepreference write a package of demo good tidy up.

First look at the definition of it on the Internet:

Sharedpreferences is the easiest data storage technology to understand in Android, and in fact sharedpreferences is dealing with a key-value (key-value pair) Sharedpreferences used to store some lightweight data.

Encapsulated class

package com.example.testlistq;import android.content.context;import  Android.content.sharedpreferences;public class sharedpreferencesutils {private static  final String FILE_NAME =  "Share_date";/** *  the method of saving data, we need to get the specific type of data to be saved, Then call different save methods based on the type  *  *  @param  context *  @param  key   Save the corresponding key  *  @param  object   Save the corresponding value  */public static void setparam (Context  context, string key, object object)  {String type =  Object.getclass (). Getsimplename (); Sharedpreferences sp = context.getsharedpreferences (file_name, context.mode_private); Sharedpreferences.editor editor = sp.edit ();if  ("String". Equals (type))  { Editor.putstring (key,  (String)  object);}  else if  ("integer". Equals (Type))  {editor.putint (key,  (integer)  object);}  else if  ("Boolean". Equals (Type))  {editor.putboolean (key,  (Boolean)  object);}  else if  ("float". Equals (Type))  {editor.putfloat (key,  (float)  object);}  else if  ("Long". Equals (Type))  {editor.putlong (key,  (long)  object);} Editor.commit ();} /** *  get the method to save the data, we are based on the specific type of data that is worth saving, and then call the relative method to get the value  *  *  @param  context  *  @param  key *  @param  defaultObject *  @return  */public static  object getparam (Context context, string key, object defaultobject)  { String type = defaultobject.getclass (). Getsimplename (); Sharedpreferences sp = context.getsharedpreferences (file_name, context.mode_private);   ("string". Equals (Type))  {return sp.getstring (key,  (string)  defaultobject);}  else if  ("Integer". Equals (Type))  {return sp.getint (Key,  (Integer)  defaultobject);}  else if  ("Boolean". Equals (Type))  {return sp.getboolean (key,  (Boolean)   Defaultobject);}  else if  ("float". Equals (Type))  {return sp.getfloat (key,  (float)   Defaultobject);}  else if  ("Long". Equals (Type))  {return sp.getlong (key,  (Long)  defaultobject );} Return null;}}

Invoke instance

Sharedpreferencesutils.setparam (This, "name", "Xiaoming"); Sharedpreferencesutils.setparam (this, "id", 10241); Sharedpreferencesutils.setparam (This, "Ifold", true); String str = Sharedpreferencesutils.getparam (this, "name", "name"). ToString (); String id = sharedpreferencesutils.getparam (this, "id", 123). ToString (); String old = Sharedpreferencesutils.getparam (this, "Ifold", false). ToString (); Toast.maketext (this, id + "," + str + "," + old, Toast.length_long). Show ();

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Sharedpreferences Package Class