Threads

Pregunta	Respuesta
How many threads does an Android Application have?	One
Each activity has its own thread: True or False?	False, they all share the thread of the application process they belong to
What is a Looper?	A looper is a queue of events to be processed by an application
Give an example of how the OS uses Loopers	To queue UI interactions for a particular application
What happens if an event takes longer than 5 seconds to process?	An "Application Not Responding" Toast appears, giving the user a chance to terminate the application
What are the 2 golden rules related to threading on Android?	Do not block the UI thread and do not access the UI from outside of the UI thread
What is a Handler?	An object used to communicate with a specific thread
How are Handlers communicated with?	By queueing messages / runnables to be processed
How can we safely access the UI from outside of the UI thread?	By executing a runnable using Activity.runOnUiThread()

Resumen del Recurso

	Creado por Alex Neves hace casi 9 años