IOS 錄音AVAudioRecorder
144? 作者 qilinit 關注
2016.09.07 23:41 字數 208 閱讀 112評論 0喜歡 0
1、懶加載一個AVAudioRecorer類對象
2、設置保存的沙盒地址
3、將沙盒的地址轉換成NSURl對象
4、用字典設置屬性
5、創建對象
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
/**
*? 懶加載avaudiorecorder對象
*
*? @return AVAudioRecorer
*/
-(AVAudioRecorder *)recorder
{
if (_recorder == nil) {
NSString *path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
NSString *filePath = [path stringByAppendingPathComponent:@"123.caf"];
self.pathUILable.text = filePath;
NSLog(@"%@",filePath);
NSURL *url = [NSURL URLWithString:filePath];
NSDictionary *settingRecorder = @{AVFormatIDKey:@(kAudioFormatLinearPCM),AVSampleRateKey : @(8000)};
self.recorder = [[AVAudioRecorder alloc] initWithURL:url settings:settingRecorder error:nil];
}
return _recorder;
}
/**
*? 開始錄音
*
*? @param sender void
*/
- (IBAction)recorder:(id)sender {
[self.recorder record];
}
- (IBAction)stopRecorder:(id)sender {
[self.recorder stop];
}
@end
#import<AVFoundation/AVFoundation.h>
#include "lame.h"
#define kSCREEN_WIDTH ([UIScreen mainScreen].bounds.size.width)
#define kSCREEN_HEIGHT ([UIScreen mainScreen].bounds.size.height)//應用尺寸
#define RGBA(r,g,b,a) [UIColor colorWithRed:r/255.0f green:g/255.0f blue:b/255.0f alpha:a]
#define RGB(r,g,b) RGBA(r,g,b,1.0f)
#define kColorBack [UIColor groupTableViewBackgroundColor]
#define margin 15
#define kSandboxPathStr [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]
#define kMp3FileName @"myRecord.mp3"
#define kCafFileName @"myRecord.caf"
2.分別遵守協議<AVAudioPlayerDelegate,AVAudioRecorderDelegate,UIGestureRecognizerDelegate>
@property (nonatomic,strong) UIView *recordView;
@property (nonatomic,strong) UIView *editView;
@property (nonatomic,strong) UIImageView *voiceView;
@property (nonatomic,strong) UILabel *timeLabel;? //錄音計時
@property (nonatomic,strong) UILabel *timeLabel2;? //語音試聽計時
@property (nonatomic,strong) UIImageView *recordBtn;
@property (nonatomic,strong) UIImageView *rotateImgView;
@property (nonatomic,strong) NSTimer *timer1;? //控制錄音時長顯示更新
@property (nonatomic,assign) NSInteger countNum;//錄音計時（秒）
@property (nonatomic,copy) NSString *cafPathStr;
@property (nonatomic,copy) NSString *mp3PathStr;
@property (nonatomic,strong) AVAudioRecorder *audioRecorder;//音頻錄音機
@property (nonatomic, strong) CABasicAnimation *rotationAnimation;
3.聲明宏定義
/**
*存放所有的音樂播放器
*/
static NSMutableDictionary *_musices;
self.view.backgroundColor = [UIColor groupTableViewBackgroundColor];
self.title = @"錄音";
self.navigationController.navigationBar.barTintColor = RGB(215, 155, 252);
[self initEditView];
[self.view addSubview:self.recordView];
self.timeLabel2.text = @"";
self.cafPathStr = [kSandboxPathStr stringByAppendingPathComponent:kCafFileName];
self.mp3PathStr =? [kSandboxPathStr stringByAppendingPathComponent:kMp3FileName];
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
[self stopPlayRecord];
}
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self.view endEditing:YES];
}
- (void)changeRecordTime
{
self.countNum += 1;
NSInteger min = self.countNum/60;
NSInteger sec = self.countNum - min * 60;
self.timeLabel.text = [NSString stringWithFormat:@"%02d:%02d",min,sec];
}
#pragma mark - 語音編輯視圖
- (void)initEditView{
CGFloat commonW =kSCREEN_WIDTH - margin*2;
UILabel *label1 = [[UILabel alloc]init];
label1.text = @"語音試聽";
label1.textColor = [UIColor blackColor];
label1.frame = CGRectMake(margin , margin , commonW * 0.6, 21);
label1.font = [UIFont systemFontOfSize:16];
CGFloat deleteW = 50.0;
UIView *listenView = [[UIView alloc]init];
listenView.frame = CGRectMake(margin, CGRectGetMaxY(label1.frame)+margin, commonW - deleteW - margin, 35);
listenView.layer.cornerRadius = 3;
listenView.clipsToBounds = YES;
listenView.layer.borderColor = [UIColor purpleColor].CGColor;
listenView.backgroundColor = [UIColor whiteColor];
listenView.layer.borderWidth = 1;
listenView.userInteractionEnabled = YES;
[listenView addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(playRecord)]];
UIImageView *iconView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"voice"]];
CGFloat iconW = 11;
CGFloat iconH = 14;
CGFloat iconX = 8;
CGFloat iconY = (listenView.frame.size.height - iconH) * 0.5;
iconView.frame = CGRectMake(iconX, iconY, iconW, iconH);
self.voiceView = iconView;
[listenView addSubview:iconView];
UILabel *timeLabel2 = [[UILabel alloc]init];
CGFloat labelW = 50;
CGFloat timeW = 120;
CGFloat timeX = listenView.frame.size.width - timeW;
timeLabel2.frame = CGRectMake(timeX, 0, timeW, listenView.frame.size.height);
timeLabel2.text = @"\"";
timeLabel2.textColor = [UIColor grayColor];
timeLabel2.textAlignment = NSTextAlignmentRight;
self.timeLabel2 = timeLabel2;
[listenView addSubview:timeLabel2];
UILabel *listenLabel = [[UILabel alloc]init];
listenLabel.frame = CGRectMake(CGRectGetMaxX(iconView.frame) + 5, 0, labelW , listenView.frame.size.height);
listenLabel.text = @"試聽";
listenLabel.textColor = [UIColor purpleColor];
[listenView addSubview:listenLabel];
UIButton *deleteBtn = [[UIButton alloc]init];
CGFloat deleteX =CGRectGetMaxX(listenView.frame) + margin;
deleteBtn.frame = CGRectMake(deleteX, CGRectGetMinY(listenView.frame), deleteW, listenView.frame.size.height);
[deleteBtn setTitle:@"刪除" forState:UIControlStateNormal];
[deleteBtn setTitleColor:[UIColor lightGrayColor] forState:UIControlStateNormal];
[deleteBtn setBackgroundColor:[UIColor whiteColor]];
deleteBtn.layer.cornerRadius = 3;
deleteBtn.clipsToBounds = YES;
deleteBtn.layer.borderColor = [UIColor lightGrayColor].CGColor;
deleteBtn.layer.borderWidth = 1;
deleteBtn.titleLabel.font = [UIFont systemFontOfSize:16];
[deleteBtn addTarget:self action:@selector(showDeleteAlert) forControlEvents:UIControlEventTouchUpInside];
[self.editView addSubview:label1];
[self.editView addSubview:listenView];
[self.editView addSubview:deleteBtn];
[self pictureChangeAnimationSetting];
}
#pragma mark - 動畫效果
- (void)pictureChangeAnimationSetting
{
NSArray *picArray = @[[UIImage imageNamed:@"voice1"],
[UIImage imageNamed:@"voice2"],
[UIImage imageNamed:@"voice3"],];
//? ? self.imageView.image = [UIImage imageNamed:@"voice1"];
//imageView的動畫圖片是數組images
self.voiceView.animationImages = picArray;
//按照原始比例縮放圖片，保持縱橫比
self.voiceView.contentMode = UIViewContentModeScaleAspectFit;
//切換動作的時間3秒，來控制圖像顯示的速度有多快，
self.voiceView.animationDuration = 1;
//動畫的重復次數，想讓它無限循環就賦成0
self.voiceView.animationRepeatCount = 0;
}
#pragma mark - 刪除當前錄音
- (void)deleteCurrentRecord
{
[self deleteOldRecordFile];
[self stopPlayRecord];
self.timeLabel2.text = @"";
self.timeLabel.text = @"00:00";
}
- (void)commitVoiceNotice
{
[self audio_PCMtoMP3];
NSData *data = [NSData dataWithContentsOfFile:self.mp3PathStr];
NSString *base64Str = [self Base64StrWithMp3Data:data];
if ([self isBlankString:base64Str]) {
return;
}
NSData *mp3Data = [self Mp3DataWithBase64Str:base64Str];
//? ? [AudioTool playMusicWithData:mp3Data];
}
-(UIView *)recordView{
if (!_recordView) {
CGFloat recordH = kSCREEN_HEIGHT * 0.4;
CGFloat availH = recordH - margin * 4;
_recordView = [[UIView alloc]initWithFrame:CGRectMake(0, kSCREEN_HEIGHT - recordH, kSCREEN_WIDTH, recordH)];
_recordView.backgroundColor = [UIColor whiteColor];
CGFloat timeH = availH * 0.2;
CGFloat btnH = availH * 0.7;
CGFloat noticeH = availH * 0.1;
self.timeLabel.frame = CGRectMake(0, margin, kSCREEN_WIDTH, timeH);
self.recordBtn.frame = CGRectMake((kSCREEN_WIDTH - btnH)*0.5, CGRectGetMaxY(self.timeLabel.frame) + margin, btnH, btnH);
self.recordBtn.layer.cornerRadius = self.recordBtn.frame.size.width * 0.5;
[self.recordBtn.layer setMasksToBounds:YES];
//? ? ? ? [self.recordBtn addTarget:self action:@selector(recordNotice) forControlEvents:UIControlEventTouchDown];
//? ? ? ? [self.recordBtn addTarget:self action:@selector(stopNotice) forControlEvents:UIControlEventTouchUpInside];
//實例化長按手勢監聽
UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleTableviewCellLongPressed:)];
//代理
longPress.delegate = self;
longPress.minimumPressDuration = 0.5;
[self.recordBtn addGestureRecognizer:longPress];
self.rotateImgView.frame = CGRectMake(0, 0, btnH, btnH);
self.rotateImgView.center = self.recordBtn.center;
[_recordView addSubview:self.rotateImgView];
[_recordView addSubview:self.timeLabel];
[_recordView addSubview:self.recordBtn];
UILabel *noticeLabel = [[UILabel alloc]init];
noticeLabel.frame = CGRectMake(0, recordH - noticeH - margin, kSCREEN_WIDTH, noticeH);
noticeLabel.textAlignment = NSTextAlignmentCenter;
noticeLabel.textColor = [UIColor lightGrayColor];
noticeLabel.font = [UIFont systemFontOfSize:14];
noticeLabel.text = @"按住不放錄制語音";
//? ? ? ? noticeLabel.backgroundColor = [UIColor redColor];
[_recordView addSubview:noticeLabel];
}
return _recordView;
}
//長按事件的實現方法
- (void) handleTableviewCellLongPressed:(UILongPressGestureRecognizer *)gestureRecognizer {
if (gestureRecognizer.state ==? UIGestureRecognizerStateBegan) {
NSLog(@"UIGestureRecognizerStateBegan");
[self startRecordNotice];
}
if (gestureRecognizer.state == UIGestureRecognizerStateChanged) {
}
if (gestureRecognizer.state == UIGestureRecognizerStateEnded) {
NSLog(@"UIGestureRecognizerStateEnded");
[self stopRecordNotice];
}
}
#pragma mark - 錄音方法
- (void)startRecordNotice{
self.timeLabel2.text = @"";
[self stopMusicWithUrl:[NSURL URLWithString:self.cafPathStr]];
[self.voiceView.layer removeAllAnimations];
self.voiceView.image = [UIImage imageNamed:@"voice3"];
if ([self.audioRecorder isRecording]) {
[self.audioRecorder stop];
}
NSLog(@"----------開始錄音----------");
[self deleteOldRecordFile];? //如果不刪掉，會在原文件基礎上錄制；雖然不會播放原來的聲音，但是音頻長度會是錄制的最大長度。
AVAudioSession *audioSession=[AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
[_recordBtn setImage:[UIImage imageNamed:@"record_high"]];
if (![self.audioRecorder isRecording]) {//0--停止、暫停，1-錄制中
[self.audioRecorder record];//首次使用應用時如果調用record方法會詢問用戶是否允許使用麥克風
self.countNum = 0;
NSTimeInterval timeInterval =1 ; //0.1s
self.timer1 = [NSTimer scheduledTimerWithTimeInterval:timeInterval? target:self selector:@selector(changeRecordTime)? userInfo:nil? repeats:YES];
[self.timer1 fire];
}
[self starAnimalWithTime:2.0];
}
// 執行動畫
- (void)starAnimalWithTime:(CFTimeInterval)time
{
self.rotateImgView.image = [UIImage imageNamed:@"rcirle_high"];
self.rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
self.rotationAnimation.toValue = [NSNumber numberWithFloat: M_PI * 2.0 ];
self.rotationAnimation.duration = time;
self.rotationAnimation.cumulative = YES;
self.rotationAnimation.repeatCount = HUGE_VALF;
[self.rotateImgView.layer addAnimation:self.rotationAnimation forKey:@"rotationAnimation"];
}
- (void)stopRecordNotice
{
NSLog(@"----------結束錄音----------");
[self.audioRecorder stop];
[self.timer1 invalidate];
//停止旋轉動畫
[self.rotateImgView.layer removeAllAnimations];
self.voiceView.image = [UIImage imageNamed:@"voice3"];
self.rotateImgView.image = [UIImage imageNamed:@"rcirle_norm"];
[self.recordBtn setImage:[UIImage imageNamed:@"record_norm"]];
[self audio_PCMtoMP3];
//計算文件大小
long long fileSize = [self fileSizeAtPath:self.mp3PathStr]/1024.0;
NSString *fileSizeStr = [NSString stringWithFormat:@"%lld",fileSize];
self.timeLabel2.text = [NSString stringWithFormat:@"%ld \" %@kb? ",(long)self.countNum,fileSizeStr];
self.timeLabel.text = @"00:00";
NSLog(@"timer isValid:%d",self.timer1.isValid);
//? ? NSLog(@"mp3PathStr:%@",self.mp3PathStr);
NSLog(@"countNum %d , fileSizeStr : %@",self.countNum,fileSizeStr);
}
#pragma mark - 播放
- (void)playRecord
{
[self stopAllMusic];
AVAudioSession *audioSession=[AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayback error:nil];? //此處需要恢復設置回放標志，否則會導致其它播放聲音也會變小
[self playMusicWithUrl:[NSURL URLWithString:self.cafPathStr]];
[self.voiceView startAnimating];
}
- (void)stopPlayRecord
{
[self stopMusicWithUrl:[NSURL URLWithString:self.cafPathStr]];
[self.voiceView.layer removeAllAnimations];
self.voiceView.image = [UIImage imageNamed:@"voice3"];
}
-(void)deleteOldRecordFile{
NSFileManager* fileManager=[NSFileManager defaultManager];
BOOL blHave=[[NSFileManager defaultManager] fileExistsAtPath:self.cafPathStr];
if (!blHave) {
NSLog(@"不存在");
return ;
}else {
NSLog(@"存在");
BOOL blDele= [fileManager removeItemAtPath:self.cafPathStr error:nil];
if (blDele) {
NSLog(@"刪除成功");
}else {
NSLog(@"刪除失敗");
}
}
}
-(void)deleteOldRecordFileAtPath:(NSString *)pathStr{
NSFileManager* fileManager=[NSFileManager defaultManager];
BOOL blHave=[[NSFileManager defaultManager] fileExistsAtPath:pathStr];
if (!blHave) {
NSLog(@"不存在");
return ;
}else {
NSLog(@"存在");
BOOL blDele= [fileManager removeItemAtPath:self.cafPathStr error:nil];
if (blDele) {
NSLog(@"刪除成功");
}else {
NSLog(@"刪除失敗");
}
}
}
-(void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
{
NSLog(@"delegate--播放完畢----------------------");
[self.voiceView.layer removeAllAnimations];
self.voiceView.image = [UIImage imageNamed:@"voice3"];
}
#pragma mark - caf轉mp3
- (void)audio_PCMtoMP3
{
@try {
int read, write;
FILE *pcm = fopen([self.cafPathStr cStringUsingEncoding:1], "rb");? //source 被轉換的音頻文件位置
fseek(pcm, 4*1024, SEEK_CUR);? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? //skip file header
FILE *mp3 = fopen([self.mp3PathStr cStringUsingEncoding:1], "wb");? //output 輸出生成的Mp3文件位置
const int PCM_SIZE = 8192;
const int MP3_SIZE = 8192;
short int pcm_buffer[PCM_SIZE*2];
unsigned char mp3_buffer[MP3_SIZE];
lame_t lame = lame_init();
lame_set_in_samplerate(lame, 11025.0);
lame_set_VBR(lame, vbr_default);
lame_init_params(lame);
do {
read = fread(pcm_buffer, 2*sizeof(short int), PCM_SIZE, pcm);
if (read == 0)
write = lame_encode_flush(lame, mp3_buffer, MP3_SIZE);
else
write = lame_encode_buffer_interleaved(lame, pcm_buffer, read, mp3_buffer, MP3_SIZE);
fwrite(mp3_buffer, write, 1, mp3);
} while (read != 0);
lame_close(lame);
fclose(mp3);
fclose(pcm);
}
@catch (NSException *exception) {
NSLog(@"%@",[exception description]);
}
@finally {
NSLog(@"MP3生成成功: %@",self.mp3PathStr);
}
}
#pragma mark -? Getter
/**
*? 獲得錄音機對象
*
*? @return 錄音機對象
*/
-(AVAudioRecorder *)audioRecorder{
if (!_audioRecorder) {
//創建錄音文件保存路徑
NSURL *url=[NSURL URLWithString:self.cafPathStr];
//創建錄音格式設置
NSDictionary *setting=[self getAudioSetting];
//創建錄音機
NSError *error=nil;
_audioRecorder=[[AVAudioRecorder alloc]initWithURL:url settings:setting error:&error];
_audioRecorder.delegate=self;
_audioRecorder.meteringEnabled=YES;//如果要監控聲波則必須設置為YES
if (error) {
NSLog(@"創建錄音機對象時發生錯誤，錯誤信息：%@",error.localizedDescription);
return nil;
}
}
return _audioRecorder;
}
#pragma mark - AudioPlayer方法
/**
*播放音樂文件
*/
- (BOOL)playMusicWithUrl:(NSURL *)fileUrl
{
//其他播放器停止播放
[self stopAllMusic];
if (!fileUrl) return NO;
AVAudioSession *session=[AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayback error:nil];? //此處需要恢復設置回放標志，否則會導致其它播放聲音也會變小
[session setActive:YES error:nil];
AVAudioPlayer *player=[self musices][fileUrl];
if (!player) {
//2.2創建播放器
player=[[AVAudioPlayer alloc]initWithContentsOfURL:fileUrl error:nil];
}
player.delegate = self;
if (![player prepareToPlay]){
NSLog(@"緩沖失敗--");
//? ? ? ? [self myToast:@"播放器緩沖失敗"];
return NO;
}
[player play];
//2.4存入字典
[self musices][fileUrl]=player;
NSLog(@"musices:%@ musices",self.musices);
return YES;//正在播放，那么就返回YES
}
/**
*播放音樂文件
*/
- (void)stopMusicWithUrl:(NSURL *)fileUrl{
if (!fileUrl) return;//如果沒有傳入文件名，那么就直接返回
//1.取出對應的播放器
AVAudioPlayer *player=[self musices][fileUrl];
//2.停止
if ([player isPlaying]) {
[player stop];
NSLog(@"播放結束:%@--------",fileUrl);
}
if ([[self musices].allKeys containsObject:fileUrl]) {
[[self musices] removeObjectForKey:fileUrl];
}
}
- (BOOL)isPlayingWithUniqueID:(NSString *)uniqueID
{
if ([[self musices].allKeys containsObject:uniqueID]) {
AVAudioPlayer *player=[self musices][uniqueID];
return [player isPlaying];
}else{
return NO;
}
}
- (void)stopAllMusic
{
if ([self musices].allKeys.count > 0) {
for ( NSString *playID in [self musices].allKeys) {
AVAudioPlayer *player=[self musices][playID];
[player stop];
}
}
}
- (NSMutableDictionary *)musices
{
if (_musices==nil) {
_musices=[NSMutableDictionary dictionary];
}
return _musices;
}
/**
*? 取得錄音文件設置
*
*? @return 錄音設置
*/
-(NSDictionary *)getAudioSetting{
//LinearPCM 是iOS的一種無損編碼格式,但是體積較為龐大
//錄音設置
NSMutableDictionary *recordSettings = [[NSMutableDictionary alloc] init];
//錄音格式 無法使用
[recordSettings setValue :[NSNumber numberWithInt:kAudioFormatLinearPCM] forKey: AVFormatIDKey];
//采樣率
[recordSettings setValue :[NSNumber numberWithFloat:11025.0] forKey: AVSampleRateKey];//44100.0
//通道數
[recordSettings setValue :[NSNumber numberWithInt:2] forKey: AVNumberOfChannelsKey];
//線性采樣位數
//[recordSettings setValue :[NSNumber numberWithInt:16] forKey: AVLinearPCMBitDepthKey];
//音頻質量,采樣質量
[recordSettings setValue:[NSNumber numberWithInt:AVAudioQualityMin] forKey:AVEncoderAudioQualityKey];
return recordSettings;
}
-(UIImageView *)rotateImgView
{
if (!_rotateImgView) {
_rotateImgView = [[UIImageView alloc]init];
_rotateImgView.image = [UIImage imageNamed:@"rcirle_norm"];
}
return _rotateImgView;
}
-(UIView *)editView
{
if (!_editView) {
_editView = [[UIView alloc]initWithFrame:CGRectMake(0, 64, kSCREEN_WIDTH, 200)];
_editView.backgroundColor = kColorBack;
[self.view addSubview:_editView];
}
return _editView;
}
-(UILabel *)timeLabel
{
if (!_timeLabel) {
_timeLabel = [[UILabel alloc]init];
_timeLabel.textAlignment = NSTextAlignmentCenter;
_timeLabel.font = [UIFont fontWithName:@"HelveticaNeue-Thin" size:42];
_timeLabel.text = @"00:00";
_timeLabel.textColor = RGB(215, 155, 252);
}
return _timeLabel;
}
- (UIImageView *)recordBtn
{
if (!_recordBtn) {
_recordBtn = [[UIImageView alloc]init];
_recordBtn.backgroundColor = [UIColor clearColor];
[_recordBtn setImage:[UIImage imageNamed:@"record_norm"]];
_recordBtn.userInteractionEnabled = YES;//方便添加長按手勢
}
return _recordBtn;
}
#pragma mark - 文件轉換
// 二進制文件轉為base64的字符串
- (NSString *)Base64StrWithMp3Data:(NSData *)data{
if (!data) {
NSLog(@"Mp3Data 不能為空");
return nil;
}
//? ? NSString *str = [data base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
NSString *str = [data base64EncodedStringWithOptions:NSDataBase64EncodingEndLineWithLineFeed];
return str;
}
// base64的字符串轉化為二進制文件
- (NSData *)Mp3DataWithBase64Str:(NSString *)str{
if (str.length ==0) {
NSLog(@"Mp3DataWithBase64Str:Base64Str 不能為空");
return nil;
}
NSData *data = [[NSData alloc] initWithBase64EncodedString:str options:NSDataBase64DecodingIgnoreUnknownCharacters];
NSLog(@"Mp3DataWithBase64Str:轉換成功");
return data;
}
//單個文件的大小
- (long long) fileSizeAtPath:(NSString*)filePath{
NSFileManager* manager = [NSFileManager defaultManager];
if ([manager fileExistsAtPath:filePath]){
return [[manager attributesOfItemAtPath:filePath error:nil] fileSize];
}else{
NSLog(@"計算文件大小：文件不存在");
}
return 0;
}
- (BOOL)isBlankString:(NSString *)string {
if (string == nil || string == NULL) {
return YES;
}
if ([string isKindOfClass:[NSNull class]]) {
return YES;
}
if ([[string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]] length]==0) {
return YES;
}
return NO;
}
