SharedPreferences的一个工具类，调用setParam就能保存String, Integer, Boolean, Float, Long类型的参数，同样调用getParam就能获取到保存在手机里面的数据

 public class SharedPreferencesUtils {  
     /** 
      * 保存在手机里面的文件名 
      */  
     private static final String FILE_NAME = "share_date";  
       
       
     /** 
      * 保存数据的方法，我们需要拿到保存数据的具体类型，然后根据类型调用不同的保存方法 
      * @param context 
      * @param key 
      * @param object  
      */  
     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();  
     }  
       
       
     /** 
      * 得到保存数据的方法，我们根据默认值得到保存的数据的具体类型，然后调用相对于的方法获取值 
      * @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);  
           
         if("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;  
     }  
 }  

保存数据：

    SharedPreferencesUtils.setParam(this, "String", "123");  
    SharedPreferencesUtils.setParam(this, "int", 123);  
    SharedPreferencesUtils.setParam(this, "boolean", true);  
    SharedPreferencesUtils.setParam(this, "long", 123L);  
    SharedPreferencesUtils.setParam(this, "float", 1.23f);  

获取数据：

     SharedPreferencesUtils.getParam(TimerActivity.this, "String", "123");                                                                                          
     SharedPreferencesUtils.getParam(TimerActivity.this, "int", 123);  
     SharedPreferencesUtils.getParam(TimerActivity.this, "boolean", false);  
     SharedPreferencesUtils.getParam(TimerActivity.this, "long", 123L);  
     SharedPreferencesUtils.getParam(TimerActivity.this, "float", 1.23f);