用button简单控制音乐的播放与暂停

ViewController.h

//定义一个按钮button

@property(strong,nonatomic)UIButton *button;

 

ViewController.m

#import "ViewController.h"

//导入头文件

#import <AVFoundation/AVFoundation.h>

 

@interface ViewController ()

 //定义一个player的属性

@property (nonatomic,strong)AVAudioPlayer *player;

@end

 

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    //获取MP3文件的全路径

    NSString *musicfiledpath=[[NSBundle mainBundle] pathForResource:@"刘德华 - 冰雨" ofType:@"mp3"];

    //也是获取路径

    NSURL *musicURL=[[NSURL alloc] initFileURLWithPath:musicfiledpath];

 

    //创建名叫theplay的对象

    AVAudioPlayer *thePlay=[[AVAudioPlayer alloc] initWithContentsOfURL:musicURL error:nil];

    

    //设置button的位置

    self.button=[[UIButton alloc] initWithFrame:CGRectMake(150, 150, 100, 50)];

    

    //按钮的名称

    [self.button setTitle:@"播放+暂停" forState:UIControlStateNormal];

    

    //按钮的背景色

    self.button.backgroundColor=[UIColor grayColor];

    

    [self.view addSubview:self.button];

    

    //响应播放事件

    [self.button addTarget:self action:@selector(testplayer) forControlEvents:UIControlEventTouchUpInside];

    

    //创建播放器

    self.player=thePlay;

}

 

-(void)testplayer

{

    if(self.button.tag==0)

    {

    //预播放

    [self.player prepareToPlay];

        //设置音乐播放的次数，-1为循环播放

    self.player.numberOfLoops=-1;

    //播放

    [self.player play];

        self.button.tag=1;

        

    }

    else

    {

        [self.player stop];

        self.button.tag=0;

    }

    

}

 

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

 

@end