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乐高机器人®组件 · App Inventor 2 中文网
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DrawCircle(color,x,y,radius,fill)
Draw a circle on the screen.
DrawIcon(color,x,y,type,no)
Draw a built-in icon on screen.
DrawLine(color,x1,y1,x2,y2)
Draw a line on the screen.
DrawPoint(color,x,y)
Draw a point on the screen.
DrawRect(color,x,y,width,height,fil...
Status bar and navigation bar appear over my view's bounds in iOS 7
...ons.
Using View Controllers
In iOS 7, view controllers use full-screen layout. At the same time,
iOS 7 gives you more granular control over the way a view controller
lays out its views. In particular, the concept of full-screen layout
has been refined to let a view controller specif...
Can an Android Toast be longer than Toast.LENGTH_LONG?
...is already showing, but it does refresh the amount of time it stays on the screen.
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How to upgrade Git on Windows to the latest version?
... How is this different from answers already provided? Simply attaching a screenshot does not add anything in this case. Part of the strength of SO is that good answers are upvoted, rather than duplicated, which simply clutters the page and hinders users' ability to find solutions to issues. This i...
Lock Android phone application to Portrait mode
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Yes. Add android:screenOrientation="portrait" to the manifest under your main activity.
<activity android:name=".yourActivity" android:screenOrientation="portrait"... />
...
How do I navigate in the results of Diff
...s
Use
j or ↓ to move down one line at a time
d to move by half the page screen
f to move by a whole page screen
For scrolling upwards use
k or ↑ to move up one line at a time
u to move by half the page screen
b to move by a whole page screen
press q to quit out of the log
It will returns to ...
Page scroll when soft keyboard popped up
...the big mistake:
android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"
Somehow, the Fullscreen themes prevent the ScrollViews from scrolling when the SoftKeyboard is visible.
At the moment, I ended up using this instead:
android:theme="@android:style/Theme.Black.NoTitleBar
I don't ...
How can I produce an effect similar to the iOS 7 blur view?
...icate this blurred background from Apple's publicly released iOS 7 example screen:
12 Answers
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vertical divider between two columns in bootstrap
... Which means that if I have columns next to each other in medium and large screen sizes, then I would use the class col-md-border, which would hide the separator on smaller screen sizes.
css:
@media (min-width: 992px) {
.col-md-border:not(:last-child) {
border-right: 1px solid #d7d7d7;...
“To Do” list before publishing Android app to market [closed]
... (using Paint.NET, PNGCrush or OptiPNG).
Optimize your layouts for most of screen sizes. You can do this by simply changing the screen size while editing a layout in AndroidStudio or Eclipse.
Try/catch all exceptions on the UI and display a simple toast which indicate to the user that something wron...