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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！！
rake db:schema:load vs. migrations
...ery simple question here - if migrations can get slow and cumbersome as an app gets more complex and if we have the much cleaner rake db:schema:load to call instead, why do migrations exist at all?
...
UITextField auto-capitalization type - iPhone App
...s
There are a few options here:
allCharacters is the same as double tapping the shift key, basically capslock.
none is pretty self-explanatory, keyboard will never try to capitalize letters.
sentences will try to capitalize the next word after an end mark punctuation.
words will try to capital...
How to detect shake event with android?
...nexus has to be a much more violent shake on a galaxy III running the same app. if i make it less sensitive for this device, it'll be too sensitive on something like the nexus. hmmmmmmm.
– topwik
Jun 19 '13 at 19:57
...
Turn off autosuggest for EditText?
...
The most reliable approach I have found to getting rid of autocomplete is to use
InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD
on your EditText control. As charlie has reported in a different answer on this page,
android:inputType="te...
XMLHttpRequest cannot load file. Cross origin requests are only supported for HTTP
...f the Python server starts successfully, you will see a msg.
Run You Web Application Locally
Open a browser
In the address line type: http://your IP address:port
http://xxx.xxx.x.x:1337 or http://xx.xxx.xxx.xx:8000 for the default
If the server is working, you will see a list of your files in t...
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 拓展参考文档 · App Inventor 2 中文网
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