iOS native module

RNAudioPlayer.h

#import <React/RCTBridgeModule.h>
@import AVFoundation;

@interface RNAudioPlayer : NSObject <RCTBridgeModule>
  
@property (strong, nonatomic) AVPlayerItem *playerItem;
@property (strong, nonatomic) AVPlayer *player;

@end

RNAudioPlayer.m

#import "RNAudioPlayer.h"
#import <React/RCTBridge.h>
#import <React/RCTEventDispatcher.h>
#import <React/RCTEventEmitter.h>
#import <AVFoundation/AVFoundation.h>
#import <Foundation/Foundation.h>
#import <MediaPlayer/MediaPlayer.h>

@implementation RNAudioPlayer
  
@synthesize bridge = _bridge;

RCT_EXPORT_MODULE();

- (RNAudioPlayer *)init {
    return [super init];
}

#pragma mark - Pubic API

RCT_EXPORT_METHOD(play:(NSString *) url)
{
    NSURL *soundUrl = [[NSURL alloc] initWithString:url];
    self.playerItem = [AVPlayerItem playerItemWithURL:soundUrl];
    self.player = [AVPlayer playerWithPlayerItem:self.playerItem];
    [self.player play];
    [self.bridge.eventDispatcher sendDeviceEventWithName: @"onPlaybackStateChanged" body: @{@"state": @"PLAYING" }];
}

RCT_EXPORT_METHOD(pause)
{
    [self.player pause];
    [self.bridge.eventDispatcher sendDeviceEventWithName: @"onPlaybackStateChanged" body: @{@"state": @"PAUSED" }];
}

RCT_EXPORT_METHOD(isPlaying:(RCTResponseSenderBlock) callback)
{
    NSMutableDictionary *events = [[NSMutableDictionary alloc] init];
    if (self.player != nil && self.player.rate != 0) {
        events[@"playing"] = @YES;
    } else {
        events[@"playing"] = @NO;
    }
    callback(events);
}
@end