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();        }    }}
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