因?yàn)橐粜Ь鶠閹酌氲囊纛l渡贾，首先考慮了AudioToolbox蛉抓，但是發(fā)現(xiàn)戴耳機(jī)會出現(xiàn)音量太小的問題庆尘。每次都需要重新再改變音量控制鍵才可以。因此巷送，舍棄了AudioToolbox的音效播放方式驶忌。
以下為AVAudioPlayer播放音效：
代碼取自https://github.com/owlcoding/SimpleAudioPlayer
在多組合音效做了簡易修改：
下面為代碼.h 部分
#import <Foundation/Foundation.h>
#import <AudioToolbox/AudioToolbox.h>
#import <AVFoundation/AVFoundation.h>
typedef void(^CompletionBlock)(BOOL);
@interface AVAudioPlayerWithCompletionBlock : AVAudioPlayer
@property (nonatomic, copy) CompletionBlock completionBlock;
@end
@interface HBAudioService : NSObject<AVAudioPlayerDelegate>{
SystemSoundID soundID;
int audioCount;
NSURL *url;
NSMutableSet *players;
}
@property (nonatomic, strong) AVAudioPlayer *player;
@property (nonatomic, strong) NSArray *audioFile;
@property (nonatomic,assign) NSInteger currentIndex;
@property(nonatomic,assign)SystemSoundID audioSoundID;//播放文件標(biāo)識
+ (HBAudioService *)shared;
/*
The method
+ (AVAudioPlayer *) playFile:(NSString *)name volume:(CGFloat)vol loops:(NSInteger)loops withCompletionBlock:(CompletionBlock)completion;
the loops parameter works like this:
any negative number - sound keeps playing in a loop over and over
0, 1 - sound is played once
2, 3, etc - sound is played twice, 3 times, etc-times :)
*/
+ (AVAudioPlayer *) playFile:(NSString *)name volume:(CGFloat)vol loops:(NSInteger)loops withCompletionBlock:(CompletionBlock)completion;
/*
The methods below just call the
playFile: volume: loops: withCompletionBlock:
*/
+ (AVAudioPlayer *)playFile:(NSString *)name;
+ (AVAudioPlayer *)playFile:(NSString *)name volume:(CGFloat)vol loops:(NSInteger)loops;
+ (AVAudioPlayer *) playFile:(NSString *)name withCompletionBlock:(CompletionBlock)completion ;
+ (AVAudioPlayer *) playLoopedFile:(NSString *) name;
+ (void)stopPlayer:(AVAudioPlayer *)player;
+ (void)stopAllPlayers;
+ (void) playFiles:(NSArray *) filesList withCompletionBlock:(CompletionBlock) completion;
@end
下面為.m部分
#import "HBAudioService.h"
@implementation AVAudioPlayerWithCompletionBlock
@end
static HBAudioService *_manger = nil;
@implementation HBAudioService
static HBAudioService *sharedInstance = nil;
+ (void)initialize
{
if (sharedInstance == nil)
sharedInstance = [[self alloc] init];
}
+ (HBAudioService *)shared
{
//Already set by +initialize.
return sharedInstance;
}
+ (id)allocWithZone:(NSZone*)zone
{
//Usually already set by +initialize.
@synchronized(self) {
if (sharedInstance) {
//The caller expects to receive a new object, so implicitly retain it
//to balance out the eventual release message.
return sharedInstance;
} else {
//When not already set, +initialize is our caller.
//It's creating the shared instance, let this go through.
return [super allocWithZone:zone];
}
}
}
- (id)init
{
//If sharedInstance is nil, +initialize is our caller, so initialize the instance.
//If it is not nil, simply return the instance without re-initializing it.
if (sharedInstance == nil) {
self = [super init];
if (self) {
//Initialize the instance here.
players = [NSMutableSet setWithCapacity:1];
self.currentIndex = 0;
}
}
return self;
}
- (AVAudioPlayer *) playFile:(NSString *)name volume:(CGFloat)vol loops:(NSInteger)loops withCompletionBlock:(CompletionBlock)completion
{
NSString *filePath = [[NSBundle mainBundle] pathForResource:name ofType:nil];
if(!filePath) {
return nil;
}
NSError *error = nil;
NSURL *fileURL = [NSURL fileURLWithPath:filePath isDirectory:NO];
AVAudioPlayerWithCompletionBlock *player = [[AVAudioPlayerWithCompletionBlock alloc] initWithContentsOfURL:fileURL error:&error];
player.volume = vol;
player.numberOfLoops = loops;
// Retain and play
if(player) {
[players addObject:player];
player.delegate = self;
player.completionBlock = completion;
[player play];
return player;
}
return nil;
}
- (void) playFiles:(NSArray*) filesList withCompletionBlock:(CompletionBlock) completion
{
if (self.currentIndex < filesList.count) {
[self playFile:filesList[self.currentIndex] withCompletionBlock:^(BOOL completed) {
if (self.currentIndex < filesList.count) {
self.currentIndex++;
[self playFiles:filesList withCompletionBlock:completion];
}else {
if (completion) {
completion(YES);
}
}
}];
}
}
- (AVAudioPlayer *)playFile:(NSString *)name {
return [self playFile:name volume:1.0f loops:0 withCompletionBlock:nil];
}
- (AVAudioPlayer *) playLoopedFile:(NSString *) name {
return [self playFile:name volume:1.0f loops:-1];
}
- (AVAudioPlayer *) playFile:(NSString *)name withCompletionBlock:(CompletionBlock)completion
{
return [self playFile:name volume:1.0f loops:0 withCompletionBlock:completion];
}
- (AVAudioPlayer *)playFile:(NSString *)name volume:(CGFloat)vol loops:(NSInteger)loops {
return [self playFile:name volume:vol loops:loops withCompletionBlock:nil];
}
- (void)stopPlayer:(AVAudioPlayer *)player {
if([players containsObject:player]) {
player.delegate = nil;
[players removeObject:player];
[player stop];
}
}
- (void)stopAllPlayers {
NSSet *pls = [NSSet setWithSet:players];
for (AVAudioPlayer *p in pls) {
[self stopPlayer:p];
}
}
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayerWithCompletionBlock *)player successfully:(BOOL)completed {
if (player.completionBlock) {
player.completionBlock ( completed );
}
player.delegate = nil;
[players removeObject:player];
}
- (void)audioPlayerDecodeErrorDidOccur:(AVAudioPlayer *)player error:(NSError *)error {
//TRC_DBG(@"audioPlayerDecodeErrorDidOccur %@", error);
player.delegate = nil;
[players removeObject:player];
}
+ (AVAudioPlayer *)playFile:(NSString *)name {
return [[HBAudioService shared] playFile:name];
}
+ (AVAudioPlayer *)playFile:(NSString *)name volume:(CGFloat)vol loops:(NSInteger)loops {
return [[HBAudioService shared] playFile:name volume:vol loops:loops];
}
+ (AVAudioPlayer *) playFile:(NSString *)name withCompletionBlock:(CompletionBlock)completion
{
return [[HBAudioService shared] playFile:name withCompletionBlock:completion];
}
+ (AVAudioPlayer *) playFile:(NSString *)name volume:(CGFloat)vol loops:(NSInteger)loops withCompletionBlock:(CompletionBlock)completion
{
return [[HBAudioService shared] playFile:name volume:vol loops:loops withCompletionBlock:completion];
}
+ (AVAudioPlayer *) playLoopedFile:(NSString *) name
{
return [[HBAudioService shared] playLoopedFile:name];
}
+ (void)stopPlayer:(AVAudioPlayer *)player {
return [[HBAudioService shared] stopPlayer:player];
}
+ (void)stopAllPlayers {
return [[HBAudioService shared] stopAllPlayers];
}
+ (void) playFiles:(NSArray *)filesList withCompletionBlock:(CompletionBlock)completion
{
[[HBAudioService shared] playFiles:filesList withCompletionBlock:completion];
}
