SharedPreferences是我們經(jīng)常用到的存儲，將它封裝到一個類中我們的開發(fā)會方便很多，可以正常設(shè)置set get 方法，但是感覺代碼有點多，今天看到一個老師的封裝，剛好可以記錄一下：

public class SPUtils {
    private static SPUtils instance = new SPUtils();
    private static SharedPreferences mSp;
    //單例
    private SPUtils(){

    }
    //得到單例
    public static SPUtils getInstance(){
        if(mSp == null){
            mSp = Uiutils.getContext().getSharedPreferences("im", Context.MODE_PRIVATE);
        }
        return instance;
    }

    //保存
    public void save(String key,Object value){
        if(value instanceof String){
            mSp.edit().putString(key, (String) value).commit();
        }else if(value instanceof Boolean){
            mSp.edit().putBoolean(key, (Boolean) value).commit();
        }else if(value instanceof  Integer){
            mSp.edit().putInt(key, (Integer) value).commit();
        }
    }
    //獲取String類型數(shù)據(jù)
    public String getString(String key,String defValue){
        return mSp.getString(key,defValue);
    }
    //獲取Boolean類型數(shù)據(jù)
    public Boolean getBoolean(String key,boolean defValue){
        return mSp.getBoolean(key,defValue);
    }//獲取Int類型數(shù)據(jù)
    public int getInt(String key,int defValue){
        return mSp.getInt(key,defValue);
    }

}