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使用模拟器构建应用程序 · App Inventor 2 中文网
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使用模拟器构建应用程序
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App Inventor includes an emulator for the phone. The emulator lets...
BrightnessTools 拓展：设置手机亮度的工具 - App Inventor 2 拓展 - 清泛I...
BlocksDescription
Raises when error occurred
ParamsTypeDescriptionerrorStringReturn a description of error
Triggered when detected any brightness or adaptive change. The param "changed" indicate what has change.
ParamsTypeDescriptionchangedNumber (int)Return what has been chang...
ClickTools 拓展：为布局、标签等没有点击事件的组件添加点击事件 - App In...
Blocks[size=15.008px]
[size=15.008px][color=var(--tertiary)][color=var(--secondary)]blocks (2)[color=var(--secondary-high)]499×533 28.5 KB
Documentation -
component ~ component
id ~ int (number)
id ~ id you used for your registered component
Use this event to set blocks of component cli...
How to get UTF-8 working in Java webapps?
I need to get UTF-8 working in my Java webapp (servlets + JSP, no framework used) to support äöå etc. for regular Finnish text and Cyrillic alphabets like ЦжФ for special cases.
...
How can I request the vibrate permission?
...This is how you let the phone Vibrate thru code:
// Get instance of Vibrator from current Context
Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
// Vibrate for 300 milliseconds
v.vibrate(300);
For a more creative pattern try the star wars theme =D
v.vibrate(new long[]{0, 50...
What is the purpose of the “role” attribute in HTML?
I keep seeing role attributes in some people's work. I use it too, but I'm not sure about its effect.
5 Answers
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What is the good python3 equivalent for auto tuple unpacking in lambda?
...t not to say "there is no way out", a third way could be to implement one more level of lambda calling just to unfold the parameters - but that would be at once more inefficient and harder to read than your two suggestions:
min(points, key=lambda p: (lambda x,y: (x*x + y*y))(*p))
update Python 3....
Classes vs. Modules in VB.NET
... VB counterparts to C# static classes. When your class is designed solely for helper functions and extension methods and you don't want to allow inheritance and instantiation, you use a Module.
By the way, using Module is not really subjective and it's not deprecated. Indeed you must use a Module w...
Check orientation on Android phone
How can I check if the Android phone is in Landscape or Portrait?
23 Answers
23
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How to detect the device orientation using CSS media queries?
In JavaScript the orientation mode can be detected using:
5 Answers
5
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