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About Android image and asset sizes
... display is equal to 1 dip. The ratio for asset scaling is:
ldpi | mdpi | tvdpi | hdpi | xhdpi | xxhdpi | xxxhdpi
0.75 | 1 | 1.33 | 1.5 | 2 | 3 | 4
Although you don't really need to worry about tvdpi unless you're developing specifically for Google TV or the original Nexus 7 -- but ...
iOS detect if user is on an iPad
...rent.userInterfaceIdiom == .pad {
// Available Idioms - .pad, .phone, .tv, .carPlay, .unspecified
// Implement your logic here
}
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Live character count for EditText
...
you can use a TextWatcher to see when the text has changed
private TextView mTextView;
private EditText mEditText;
private final TextWatcher mTextEditorWatcher = new TextWatcher() {
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
publi...
App Inventor 2 串口通信教程 - USB串口与蓝牙串口 · App Inventor 2 中文网
...以降低功耗
参考资源
MIT App Inventor 官方文档
MIT App Inventor 社区论坛
felHR85/UsbSerial - Android USB 串口库
Android USB Host API 官方文档
Arduino Bluetooth Serial 教程
您的改进建议 ...
TDD/BDD screencast/video resources [closed]
...ed "Beyond Test Driven Development: Behaviour Driven Development".
At Dnr TV there are two episodes with JP Boodhoo, where he gives an introduction to test driven development:
Test Driven Development with JP Boodhoo, Part 1
Test Driven Development with JP Boodhoo, Part 2
...
findViewByID returns null
... OMG! Cant believe I spend days on something so trivial. I moved setContentView() above the findViewById() call and that did t he trick. thanks!
– agentcurry
Jan 26 '12 at 20:35
2...
How to use Git?
I am an engineering student who spends most of his spare time watching TV rather than coding. So basically I have zero experience with any kind of version control system. My understanding is somehow they make distribution of projects easier.
...
What is the difference between the Facade and Adapter Pattern?
...s - you press "on" and it turns on your cable box, your receiver, and your TV. Maybe it's a really fancy home theater and it dims the lights and draws the shades too. That's a Facade - one button/function that takes care of a more complicated set of steps.
The Adapter pattern just links two incom...
CSS3 Rotate Animation
...otate(360deg); } }
<img class="image" src="http://i.stack.imgur.com/pC1Tv.jpg" alt="" width="120" height="120">
Some notes on your code:
You've nested the keyframes inside the .image rule, and that's incorrect
float:left won't work on absolutely positioned elements
Have a look at c...
iOS: Convert UTC NSDate to local Timezone
...ften are UTC, but represent an event in the user's local time zone, like a TV listing. Passing in an unconverted date will display the incorrect time in the picker.
– Christopher Pickslay
Oct 16 '11 at 4:31
...