When a process needs to fetch data from a disk, it effectively stops running on the CPU to let other processes run because the operation might take a long time to complete – at least 5ms seek time for a disk is common, and 5ms is 10 million CPU cycles, an eternity from the point … Read more
Usually you restore your state in onCreate(). It is possible to restore it in onRestoreInstanceState() as well, but not very common. (onRestoreInstanceState() is called after onStart(), whereas onCreate() is called before onStart(). Use the put methods to store values in onSaveInstanceState(): protected void onSaveInstanceState(Bundle icicle) { super.onSaveInstanceState(icicle); icicle.putLong(“param”, value); } And restore the values in … Read more