How do I let my app perform the next task after waiting for a few milliseconds?

[Daniel Fernandes]

So, I'm making a flashlight app. I want to add a feature to change brightness of the camera flash. To do that I want it to rapidly turn the flash on and off. I want something like this:

while (this happens){
turn flash on;
wait for (some time);
turn flash off;
wait for (some different time);
}​

So, what function should I use for making my app wait. In Arduino, I used to use "delay(10);" where 10 means it has to wait for 10 milliseconds. I want something like this for Android.

 

[marcelpreda]

You can use https://developer.android.com/reference/android/os/SystemClock.html#sleep(long)
It is not recommended to do it a the main UI thread, you will get ANR (Application Not Responding).

I think that a better option is:
https://developer.android.com/reference/android/os/Handler.html#postDelayed(java.lang.Runnable, long)

 

[Deleted User]

It is not recommended to do it a the main UI thread, you will get ANR (Application Not Responding).

Absolutely the golden rule. Don't do any waiting on the main thread.