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What is the difference between the states selected, checked and activated in Android?
...cked revolves around a View implementing the Checkable interface. Methods setChecked(), isChecked(), toggle()
ListView (after Honeycomb) calls setChecked() OR setActivated() depending on Android version as below (taken from Android source code):
if (mChoiceMode != CHOICE_MODE_NONE && mCheck...
Override Java System.currentTimeMillis for testing time sensitive code
...gleton version:
Replace Calendar.getInstance() with Clock.getInstance().getCalendarInstance().
Replace new Date() with Clock.getInstance().newDate()
Replace System.currentTimeMillis() with Clock.getInstance().currentTimeMillis()
(etc as required)
Once you've taken that first step, you can repla...
Understanding the Event Loop
...ts that are occurring (clicks on UI, files read, networks packets received etc.)
When your code completes, it is removed from the event loop, and the host process return to checking it, to see if there are more code to run. The event loop contains two event handler more: one to be executed now (the...
Interfaces — What's the point?
...deep dish ingredients in system
break;
//.... etc.
}
}
}
However, deep dish pizzas (in C# terms) may require different properties to be set in the Prepare() method than stuffed crust, and thus you end up with a lot of optional properties, and the class does...
Is it ever advantageous to use 'goto' in a language that supports loops and functions? If so, why?
...tartOuter = true;
if (restartOuter) {
i = -1;
}
}
etc
etc
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扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...rs to the user’s action, such as touching the screen, clicking a button, etc. Event handling is becoming an important concept, as mobile and web platforms become popular, but it is usually taught late in the CS curriculum. Also, it is hard to handle simple events like button clicking in some compu...
扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...rs to the user’s action, such as touching the screen, clicking a button, etc. Event handling is becoming an important concept, as mobile and web platforms become popular, but it is usually taught late in the CS curriculum. Also, it is hard to handle simple events like button clicking in some compu...
扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...rs to the user’s action, such as touching the screen, clicking a button, etc. Event handling is becoming an important concept, as mobile and web platforms become popular, but it is usually taught late in the CS curriculum. Also, it is hard to handle simple events like button clicking in some compu...
扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...rs to the user’s action, such as touching the screen, clicking a button, etc. Event handling is becoming an important concept, as mobile and web platforms become popular, but it is usually taught late in the CS curriculum. Also, it is hard to handle simple events like button clicking in some compu...
What's the $unwind operator in MongoDB?
...NoSQL" approach to data storage, so perish the thoughts of selects, joins, etc. from your mind. The way that it stores your data is in the form of documents and collections, which allows for a dynamic means of adding and obtaining the data from your storage locations.
That being said, in order to u...