How to programmatically use iOS voice synthesizers? (text to speech)

Starting from iOS 7, Apple provides this API.

See this answer.

Objective-C

#import <AVFoundation/AVFoundation.h>…AVSpeechUtterance *utterance = [AVSpeechUtterance                             speechUtteranceWithString:@"Hello World!"];AVSpeechSynthesizer *synth = [[AVSpeechSynthesizer alloc] init];[synth speakUtterance:utterance];

Swift

import AVFoundation…let utterance = AVSpeechUtterance(string: "Hello World!")let synth = AVSpeechSynthesizer()synth.speakUtterance(utterance)

#import <AVFoundation/AVFoundation.h>AVSpeechSynthesizer *av = [[AVSpeechSynthesizer alloc] init];AVSpeechUtterance *utterance = [[AVSpeechUtterance alloc]initWithString:@"Text to say"]; [av speakUtterance:utterance];

This code worked for me with Swift and iOS 8 on both Simulator and iPhone 6. I needed to add the standard AVFoundation library:

import AVFoundation// ...func onSayMeSomething() {    let utterance = AVSpeechUtterance(string: "Wow! I can speak!")    utterance.pitchMultiplier = 1.3    utterance.rate = AVSpeechUtteranceMinimumSpeechRate * 1.5    let synth = AVSpeechSynthesizer()    synth.speakUtterance(utterance)}