【代码笔记】iOS-仿QQ空间，歌曲播放

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一，效果图。

二，工程图。

三，代码。

RootViewController.h

#import <UIKit/UIKit.h>#import <AVFoundation/AVFoundation.h>@interface RootViewController : UIViewController<AVAudioPlayerDelegate>{    //存放歌曲数组    NSMutableArray *musicArray;    //名字所在的label    UILabel * musicNameLabel;    //播放器    AVAudioPlayer * _player;    //进度后的背景色    UIView * overLayView;    //声音控制    UISlider * volumeSlider;    //歌曲进度    UISlider * progressSlider;    //语音所在的灰色背景    UIView * functionView;    //前一首按钮    UIButton * prevButton;    //播放按钮    UIButton * playButton;    //下一首按钮    UIButton * nextButton;    //重播按钮    UIButton * repeatButton;    //歌曲播放的时间    UILabel *startTime;    //歌曲剩下的时间    UILabel * currentTime;        //存放歌曲在数组中的当前位置    NSInteger currentIndex;    NSTimer *timer;        //图片框以及里面的图片    UIView *transitionView;    //灰色的图    UIImageView * borderView;    //中间的空间图片    UIView * middleView;    }@end

RootViewController.m

#import "RootViewController.h"@interface RootViewController ()@end@implementation RootViewController- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];    if (self) {        // Custom initialization    }    return self;}- (void)viewDidLoad{    [super viewDidLoad];        self.navigationController.navigationBarHidden=YES;        //歌曲所在的数组    musicArray=[[NSMutableArray alloc] initWithObjects:@"一眼万年",@"中国话", @"夜曲",@"三寸天堂",nil];        //设置背景色    UIImage *image=[UIImage imageNamed:@"audio_bg.png"];    self.view.backgroundColor =[UIColor colorWithPatternImage:image];            //显示歌曲的名字    UIView *navView=[[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];    navView.backgroundColor=[UIColor clearColor];    navView.alpha=0.9;    [self.view  addSubview:navView];       //歌曲的名字所在的label    musicNameLabel=[[UILabel alloc] initWithFrame:CGRectMake(80, 0, 160, 44)];    musicNameLabel.backgroundColor=[UIColor clearColor];    musicNameLabel.textColor=[UIColor blackColor];    musicNameLabel.text = [musicArray objectAtIndex:0];    musicNameLabel.font=[UIFont boldSystemFontOfSize:12];    musicNameLabel.textAlignment=NSTextAlignmentCenter;    [navView addSubview:musicNameLabel];        //歌曲的地址    NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:[musicArray objectAtIndex:0] ofType:@"mp3"]];        _player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];    //准备播放，先提前把缓存准备好.    [_player prepareToPlay];    //开启变速功能    _player.enableRate = YES;    _player.delegate = self;    [self playerViewInit];    }#pragma -mark -functions//设置播放器的画面的排版-(void)playerViewInit{    //进度后的背景色    overLayView=[[UIView alloc] initWithFrame:CGRectMake(0.0f, 44.0f, 320.0f, 80.0f)];    overLayView.backgroundColor=[UIColor colorWithWhite:0.1f alpha:0.2f];    overLayView.hidden=NO;    [self.view addSubview:overLayView];        //声音调节    volumeSlider=[[UISlider alloc]initWithFrame:CGRectMake(20.0f, 20.0f, 250.0f, 30.0f)];    volumeSlider.backgroundColor=[UIColor clearColor];    [volumeSlider setThumbImage:[UIImage imageNamed:@"com_thumb_max_h.png"] forState:UIControlStateNormal];    [volumeSlider setMinimumTrackImage:[[UIImage imageNamed:@"com_slider_min_l.png"]stretchableImageWithLeftCapWidth:10 topCapHeight:0] forState:UIControlStateNormal];    volumeSlider.alpha=0.6f;    volumeSlider.minimumValue=0.0f;    volumeSlider.maximumValue=1.0f;    volumeSlider.value=0.2f;    [volumeSlider addTarget:self action:@selector(doClickChangeVolume) forControlEvents:UIControlEventValueChanged];    volumeSlider.minimumValueImage=[UIImage imageNamed:@"cell_radio_speaker.png"];        [overLayView addSubview:volumeSlider];    _player.volume = volumeSlider.value;                //语音后的黑色按钮    functionView=[[UIView alloc]initWithFrame:CGRectMake(0, 460-90, 320, 90)] ;    functionView.backgroundColor=[UIColor colorWithWhite:0.1f alpha:0.2f];    [self.view addSubview:functionView];        //前一首按钮    prevButton=[UIButton buttonWithType:UIButtonTypeCustom];    prevButton.frame=CGRectMake(50, 10.0f, 40.0f, 40.0f);    [prevButton setImage:[UIImage imageNamed:@"audio_btn_pre_h.png"] forState:UIControlStateNormal];    [prevButton setImage:[UIImage imageNamed:@"audio_btn_pre_n.png"] forState:UIControlStateHighlighted];    [prevButton addTarget:self action:@selector(doClickPrevButton:) forControlEvents:UIControlEventTouchUpInside];    [functionView addSubview:prevButton];        //播放按钮    playButton=[UIButton buttonWithType:UIButtonTypeCustom];    playButton.frame=CGRectMake(140, 10.0f, 40.0f, 40.0f);    playButton.tag = 10;    [playButton setImage:[UIImage imageNamed:@"audio_btn_play_h.png"] forState:UIControlStateNormal];    [playButton addTarget:self action:@selector(doClickPlayButton:) forControlEvents:UIControlEventTouchUpInside];    [functionView addSubview:playButton];      //后一首按钮    nextButton=[UIButton buttonWithType:UIButtonTypeCustom];    nextButton.frame=CGRectMake(230.0f, 10.0f, 40.0f, 40.0f);    [nextButton setImage:[UIImage imageNamed:@"audio_btn_next_h.png"] forState:UIControlStateNormal];    [nextButton setImage:[UIImage imageNamed:@"audio_btn_next_n.png"] forState:UIControlStateHighlighted];    [nextButton addTarget:self action:@selector(doClickNextButton:) forControlEvents:UIControlEventTouchUpInside];    [functionView addSubview:nextButton];        //音量控制条    progressSlider =[[UISlider alloc]initWithFrame:CGRectMake(50.0f, 55.0f, 230.0f, 20.0f)];    progressSlider.minimumValue=0.0f;    progressSlider.maximumValue=1.0f;    progressSlider.backgroundColor=[UIColor clearColor];    [progressSlider setThumbImage:[UIImage imageNamed:@"com_thumb_max_h.png"] forState:UIControlStateNormal];    [progressSlider setMinimumTrackImage:[[UIImage imageNamed:@"com_slider_min_l.png"] stretchableImageWithLeftCapWidth:10 topCapHeight:0]forState:UIControlStateNormal];    [progressSlider addTarget:self action:@selector(doClickProgressButton) forControlEvents:UIControlEventValueChanged];    [functionView addSubview:progressSlider];            //重复按钮    repeatButton=[UIButton buttonWithType:UIButtonTypeCustom];    repeatButton.frame=CGRectMake(5.0f, 20.0f, 30.0, 30.0f);    repeatButton.tag=20;    [repeatButton setImage:[UIImage imageNamed:@"audio_btn_random_h.png"] forState:UIControlStateNormal];    [repeatButton addTarget:self action:@selector(doClickRepeatButton:) forControlEvents:UIControlEventTouchUpInside];    [functionView addSubview:repeatButton];        //开始播放时间    startTime=[[UILabel alloc] initWithFrame:CGRectMake(10.0f, 50.0f, 40.0f, 30.0)];    startTime.backgroundColor=[UIColor clearColor];    startTime.text=[NSString stringWithFormat:@"%02d:%02d",0,0];    startTime.textColor=[UIColor whiteColor];    startTime.font=[UIFont systemFontOfSize:13.0f];    [functionView addSubview:startTime];        //歌曲当前的剩下的时间    currentTime=[[UILabel alloc]initWithFrame:CGRectMake(285.0f, 50.0f, 40.0f, 30.0f)];    currentTime.backgroundColor=[UIColor clearColor];    currentTime.text=[NSString stringWithFormat:@"%02d:%02d",0,0];    currentTime.font=[UIFont systemFontOfSize:13.0f];    currentTime.textColor=[UIColor whiteColor];    [functionView addSubview:currentTime];        //中间的空间背景图    transitionView=[[UIView alloc] initWithFrame:CGRectMake(0, 88, 320, 416-90-44)];    [self.view addSubview:transitionView];      //边框    borderView=[[UIImageView alloc]initWithFrame:CGRectMake(60.0f, 90.0f-44.0f, 200.0f, 200.0f)];    borderView.image=[UIImage imageNamed:@"audio_cover_bg.png"];    borderView.tag=200;    transitionView.userInteractionEnabled=YES;    [transitionView addSubview:borderView];        //空间图    middleView=[[UIView alloc]initWithFrame:CGRectMake(15.0f, 15.0f, 170.0f, 170.0f)];    middleView.backgroundColor=[UIColor colorWithPatternImage:[UIImage imageNamed:@"audio_album_default.png"]];    middleView.alpha=1.0f;    middleView.tag=201;    [borderView addSubview:middleView];          UITapGestureRecognizer *tapGes=[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGes)];    [transitionView addGestureRecognizer:tapGes];}#pragma -mark -AVAudioPlayerDelegate-(void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag{    currentIndex++;    if (currentIndex == musicArray.count) {        currentIndex = 0;    }        [self loadMusic:[musicArray objectAtIndex:currentIndex] type:@"mp3"];    musicNameLabel.text = [musicArray objectAtIndex:currentIndex];    [_player play];}#pragma -mark -functions-(void)loadMusic:(NSString*)name type:(NSString*)type{    NSString* path= [[NSBundle mainBundle] pathForResource: name ofType:type];        NSURL* url = [NSURL fileURLWithPath:path];        _player= [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];    _player.delegate=self;    _player.volume= volumeSlider.value;    [_player prepareToPlay];    }#pragma -mark -doClickActions//点击背景图的时候，歌曲进度所在的部分隐藏-(void)tapGes{    if (overLayView.hidden == YES) {        overLayView.hidden = NO;    }else{        overLayView.hidden = YES;    }}//声音播放的条-(void)doClickProgressButton{    _player.volume = volumeSlider.value; }//前一首歌曲-(void)doClickPrevButton:(UIButton *)sender{    BOOL playFlag;    if (_player.playing) {        playFlag = YES;        [_player stop];    }else{        playFlag = NO;    }    currentIndex--;    if (currentIndex < 0) {        currentIndex =musicArray.count - 1;    }    [self loadMusic:[musicArray objectAtIndex:currentIndex] type:@"mp3"];    musicNameLabel.text = [musicArray objectAtIndex:currentIndex];    if (playFlag == YES) {        [_player play];    }}//刷新进度条-(void)refresh{    progressSlider.value = _player.currentTime/_player.duration;    startTime.text =   [NSString stringWithFormat:@"%02d:%02d",(int)_player.currentTime/60,(int)_player.currentTime%60];    currentTime.text = [NSString stringWithFormat:@"%d:%02d",(int)(_player.duration-_player.currentTime)/60,(int)(_player.duration-_player.currentTime)%60];}//播放按钮-(void)doClickPlayButton:(UIButton *)sender{    if (_player.playing) {        [_player pause];        [playButton setImage:[UIImage imageNamed:@"audio_btn_play_h.png"] forState:UIControlStateNormal];        [timer invalidate];    }else{        [_player play];        [playButton setImage:[UIImage imageNamed:@"audio_btn_pause_h.png"] forState:UIControlStateNormal];        //更新下进度条        timer = [NSTimer scheduledTimerWithTimeInterval:0.05 target:self selector:@selector(refresh) userInfo:nil repeats:YES];    }}//下一首按钮-(void)doClickNextButton:(UIButton *)sender{    BOOL playFlag;    if (_player.playing) {        playFlag = YES;        [_player stop];    }else{        playFlag = NO;    }    currentIndex++;    if (currentIndex == musicArray.count) {        currentIndex = 0;    }    [self loadMusic:[musicArray objectAtIndex:currentIndex] type:@"mp3"];        musicNameLabel.text = [musicArray objectAtIndex:currentIndex];        if (playFlag == YES) {        [_player play];    }    }//重复按钮-(void)doClickRepeatButton:(UIButton *)sender{    ;}//进度按钮-(void)doClickChangeVolume{    _player.currentTime = _player.duration *progressSlider.value;}@end

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