Android 用sp存储登录状态以及退出登录

public class SharedPrefUtility {    private static final String FILE_NAME = "share_date";    public static final String INDEX="index";    public static final String LOGIN_DATA="loginData";    public static final String IS_LOGIN="isLogin";    /**     * save data into FILE_NAME ,this path is data/data/POCKET_NAME/shared_prefs     * @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.apply();    }    /**     * get value via enter key     * @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;    }    /**     * delete key     * @param context     * @param key     */    public static void removeParam(Context context,String key){        SharedPreferences sp = context.getSharedPreferences(FILE_NAME, Context.MODE_PRIVATE);        SharedPreferences.Editor editor = sp.edit();        editor.remove(key);        editor.apply();    }

}

创建一个Utils

然后调用判断是否登录

isLogin=(Boolean) SharedPrefUtility.getParam(getActivity(), SharedPrefUtility.IS_LOGIN, false);

存储登录状态:

//保存登录状态SharedPrefUtility.setParam(LoginActivity.this, SharedPrefUtility.IS_LOGIN, true);//保存登录个人信息SharedPrefUtility.setParam(LoginActivity .this, SharedPrefUtility.LOGIN_DATA, result);

退出登录:

SharedPrefUtility.setParam(MySettingsActivity.this, SharedPrefUtility.IS_LOGIN, false);
SharedPrefUtility.removeParam(MySettingsActivity.this, SharedPrefUtility.LOGIN_DATA);

这就是简单的sp存储登录状态以及退出登录

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