SAN FRANCISCO — Apple is still reaping huge profits from the iPhone while mining more moneymaking opportunities from the growing popularity of its smartwatch, digital services and wireless earbuds.

That combination produced a banner season for a company whose fortunes appeared to be sliding just a year ago amid declining sales for the iPhone, its marquee product for the past decade.

Apple’s fiscal first-quarter results, released Tuesday, provided the latest proof that the fears hanging over the consumer electronics icon might have been unfounded.

Apple’s profit and revenue for the October-December period topped analysts’ projections, providing another boost to a stock that has more than doubled in less than 13 months.