大约有 48,000 项符合查询结果（耗时：0.0951秒） [XML]
AppInventor如何实现通过扫二维码导入表格数据 - App Inventor 2 拓展 - 清...
1、扫二维码：
使用原生的“条码扫描器”组件：
2、读取二维码中的url信息：
从上面条码组件的事件中获取。
3、访问远程url获取表格csv数据：
使用Web客户端组件访问url获取数据。数据格式建议采用csv（逗号分隔）格...
Reasons that the passed Intent would be NULL in onStartCommand
...e care to check for this."
http://developer.android.com/reference/android/app/Service.html
share
|
improve this answer
|
follow
|
...
Clearing NSUserDefaults
I'm using +[NSUserDefaults standardUserDefaults] to store application settings. This consists of roughly a dozen string values. Is it possible to delete these values permanently instead of just setting them to a default value?
...
Why can't I reference System.ComponentModel.DataAnnotations?
...ing .NET 4.5.x and it is not included. But, then I am not using MVC. This app is a console app with no UI that will be run as a cron job once a day. I only want to use DataAnnotations in the classes that represent the data members that will hold the data from columns I retrieve from each SQL Server...
iOS 7 - Failing to instantiate default view controller
I am using Xcode 5 in a newly created app and when I just create it I go for the run button e click on it, then the project gets built but it does not show in the iOS Simulator and I get the following message:
...
Can I change the size of UIActivityIndicator?
...n standardized elements alone. User have been taught that certain elements appear in a certain size and that they mean specific things. Altering the standard appearance alters the interface grammar and confuses the user.
sh...
Difference between a user and a schema in Oracle?
... of all tables, sprocs etc. that make up the database for a given system / application (as in "Developers should discuss with the DBAs about the schema for our new application.")
Schema in sense 2. is similar, but not the same as schema in sense 1. E.g. for an application that uses several DB acco...
What is the difference between C++ and Visual C++? [duplicate]
...ut enhance your productivity. This is a trade-off. You have to decide what appeals most to you.
I've maintained big desktop apps that were written in Visual C++, so that is perfectly feasible. From what I know of Visual Basic, the main advantage seems to be that the first part of the development cy...
sphinx-build fail - autodoc can't import/find module
...
It sounds like os.path.append() is working OK for folks, but if you follow the conf.py template, you would insert the module path to the front of sys.path using os.path.insert(0, ...), and just add an extra .
import os
import sys
sys.path.insert(0...
How to implement the Android ActionBar back button?
....lang.NullPointerException: Attempt to invoke virtual method 'void android.app.ActionBar.setDisplayHomeAsUpEnabled(boolean)' on a null object reference
– Jones
Mar 15 at 21:12
...