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Android: Storing username and password?
If I want to store the username and password to be used inside an Android application, what is the best way to do it? Is it through the preferences screen (but what if the user misses this?), or pop up a dialog box and ask the user for the credentials? If so, I do have to maintain state for the appl...
What's the meaning of exception code “EXC_I386_GPFLT”?
...
To debug and find the source:
Enable Zombies for the app (Product\Scheme) and Launch Instruments, Select Zombies.
Run your app in Xcode
Then go to Instruments start recording.
Go back to your App and try generating the error.
Instruments should detect bad call (to zombie) if ...
使用照相机时老是弹出 error 201 : the camera d id not return an image ...
...的平台 fun123.cn 试试。
引用: 参考资料:
https://community.appinventor.mi ... android-8-0/6024/14
https://github.com/mit-cml/appinventor-sources/issues/2140
AppInventor如何选相反数? - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!
问:AppInventor如何选相反数?
答:使用“数学”中的“相反数”积木:
返回给定数字的负数,若给定负数则返回正数。如:8 返回 -8,-0.7 返回 0.7,0 则仍然返回 0。
文档:https://www.fun123.cn/reference/blocks/math.html#neg
App Inventor 2有没有代码注释功能? - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!
Q:App Inventor 2有没有代码注释功能?就是比如说如果你要用visual studio的话,就是会有一些不用的代码就可以注释掉。有一些模块其实暂时不用的话可以注释。
A:有代码注释功能,在AppInventor中是“禁用代码块”,如下:
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怎么通过app inventor接收mqtt平台推送的长消息 - App Inventor 2 中文网 -...
...一个门禁系统,把摄像头采集的图片通过MQTT平台发送给app inventor我的手机现在可以接收到短消息,这个BASE64编码数据直接接收不到,一点反应也没有。13582001974 发表于 2024-09-29 20:08
我的手机现在可以接收到短消息,这个BASE64编...
APP Inventor 空字符串怎么表示? - App应用开发 - 清泛IT社区,为创新赋能!
Q:APP Inventor 空字符串怎么表示?
A:文本下的字符串,不填写任何内容,就是空字符串。
详见文档:https://www.fun123.cn/reference/blocks/text.html#string
如何设置App不随着屏幕旋转而旋转? - App Inventor 2 中文网 - 清泛IT社区...
Q:如何设置App不随着屏幕旋转而旋转?
A:Screen1 的属性中设置屏幕方向为“锁定竖屏”就可以啦!
学习到了!!
Using MemoryStore in production
Today I ran my Node.js application in "production" mode for the first time and got this warning:
8 Answers
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PHP Constants Containing Arrays?
...:
# define constant, serialize array
define ("FRUITS", serialize (array ("apple", "cherry", "banana")));
# use it
$my_fruits = unserialize (FRUITS);
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