android SharePreference适用任何基本类型工具类

import android.content.Context;
import android.content.SharedPreferences;
import android.widget.ImageView;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Map;



public class AppSharePreferenceMgr {
    /**
     * The path to save the launcher's data referring to grid.
     */
    public static final String FILE_NAME = "data";

    /**
     * According to parameter's type to decide which type is saved.
     */
    public static void put(Context context, String key, Object object)
    {
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME, Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = sp.edit();

        if (object instanceof String)
        {
            editor.putString(key, (String) object);
        } else if (object instanceof Integer)
        {
            editor.putInt(key, (Integer) object);
        } else if (object instanceof Boolean)
        {
            editor.putBoolean(key, (Boolean) object);
        } else if (object instanceof Float)
        {
            editor.putFloat(key, (Float) object);
        } else if (object instanceof Long)
        {
            editor.putLong(key, (Long) object);
        } else
        {
            editor.putString(key, object.toString());
        }

        SharedPreferencesCompat.apply(editor);
    }

    public static Object get(Context context, String key, Object defaultObject)
    {
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
            Context.MODE_PRIVATE);

        if (defaultObject instanceof String)
        {
            return sp.getString(key, (String) defaultObject);
        } else if (defaultObject instanceof Integer)
        {
            return sp.getInt(key, (Integer) defaultObject);
        } else if (defaultObject instanceof Boolean)
        {
            return sp.getBoolean(key, (Boolean) defaultObject);
        } else if (defaultObject instanceof Float)
        {
            return sp.getFloat(key, (Float) defaultObject);
        } else if (defaultObject instanceof Long)
        {
            return sp.getLong(key, (Long) defaultObject);
        }

        return null;
    }

    /**
     * Remove the key.
     */
    public static void remove(Context context, String key)
    {
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
            Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = sp.edit();
        editor.remove(key);
        SharedPreferencesCompat.apply(editor);
    }

    /**
     * Clear all data.
     */
    public static void clear(Context context)
    {
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
            Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = sp.edit();
        editor.clear();
        SharedPreferencesCompat.apply(editor);
    }

    /**
     * Query the key if it exists.
     */
    public static boolean contains(Context context, String key)
    {
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
            Context.MODE_PRIVATE);
        return sp.contains(key);
    }

    /**
     * Return all key-value.
     */
    public static Map getAll(Context context)
    {
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
            Context.MODE_PRIVATE);
        return sp.getAll();
    }

    
    /**
     * Create a compat class to deal with SharePreferences.
     */
    private static class SharedPreferencesCompat
    {
        private static final Method sApplyMethod = findApplyMethod();

        /**
         * Reflect to search apply method.
         */
        @SuppressWarnings({ "unchecked", "rawtypes" })
        private static Method findApplyMethod()
        {
            try
            {
                Class clz = SharedPreferences.Editor.class;
                return clz.getMethod("apply");
            } catch (NoSuchMethodException e)
            {
            }

            return null;
        }

        public static void apply(SharedPreferences.Editor editor)
        {
            try
            {
                if (sApplyMethod != null)
                {
                    sApplyMethod.invoke(editor);
                    return;
                }
            } catch (IllegalArgumentException e)
            {
            } catch (IllegalAccessException e)
            {
            } catch (InvocationTargetException e)
            {
            }
            editor.commit();
        }
    }
}