相关疑难解决方法(0)

我正在开发一款TextToSpeech应用.我在a中写了一段UITextField,然后按下Speak按钮.声音根据文中所写的文字播放UITextField.

但是,当应用程序处于后台模式时,音频将停止播放.如何在后台模式下继续播放声音？类似于音频播放器如何在后台播放歌曲.

我使用以下代码进行文本到语音转换:

#import "ViewController.h"
#import "Google_TTS_BySham.h"
#import <AVFoundation/AVFoundation.h>

@interface ViewController ()

@property (nonatomic,strong)Google_TTS_BySham *google_TTS_BySham;
@property (nonatomic,strong)IBOutlet UITextField *txtString;

@end

@implementation ViewController

#pragma mark - View Life Cycle

- (void)viewDidLoad {
    [super viewDidLoad];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
}

#pragma mark - Button Tapped event

- (IBAction)btnSpeakTapped:(id)sender{
    NSString *str = [NSString stringWithFormat:@"%@",_txtString.text];
    self.google_TTS_BySham = [[Google_TTS_BySham alloc] init];
    [self.google_TTS_BySham speak:str];
}