音乐播放器 AVAudioPlayer、定时器、UISlider
2015-11-10 16:13 xiangjune 阅读(367) 评论(0) 编辑 收藏 举报
#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>
@interface ViewController : UIViewController
@property (strong, nonatomic) AVAudioPlayer *mediaPlayer;
@property (strong, nonatomic) UIButton *playBtn;
@property (strong, nonatomic) UIButton *stopBtn;
@property (strong, nonatomic) UIButton *pauseBtn;
@property (strong, nonatomic) UILabel *showLabel;
@property (strong, nonatomic) UISlider *processView;
@end
@implementation ViewController
NSTimer *timer;
NSString *totalTimeShowText;
- (void)viewDidLoad {
[super viewDidLoad];
// 播放器初始化 - 文件路径
NSURL *playFileUrl = [[NSBundle mainBundle]URLForResource:@"test" withExtension:@"mp3"];
_mediaPlayer = [[AVAudioPlayer alloc]initWithContentsOfURL:playFileUrl error:nil];
// 播放按钮
_playBtn = [[UIButton alloc]initWithFrame:CGRectMake(100, 100, 100, 50)];
_playBtn.backgroundColor = [UIColor grayColor];
[_playBtn setTitle:@"play" forState:UIControlStateNormal];
[_playBtn addTarget:self action:@selector(play) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:_playBtn];
//暂停按钮
_stopBtn = [[UIButton alloc]initWithFrame:CGRectMake(300, 100, 100, 50)];
_stopBtn.backgroundColor = [UIColor grayColor];
[_stopBtn setTitle:@"stop" forState:UIControlStateNormal];
[_stopBtn addTarget:self action:@selector(stop) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:_stopBtn];
//停止按钮
_pauseBtn = [[UIButton alloc]initWithFrame:CGRectMake(500, 100, 100, 50)];
_pauseBtn.backgroundColor = [UIColor grayColor];
[_pauseBtn setTitle:@"pause" forState:UIControlStateNormal];
[_pauseBtn addTarget:self action:@selector(pause) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:_pauseBtn];
// 显示文字
_showLabel = [[UILabel alloc]initWithFrame:CGRectMake(100, 200, 800, 50)];
_showLabel.textColor = [UIColor redColor];
int totalTime = _mediaPlayer.duration;
int minuts = totalTime/60;
int seconds = totalTime%60;
NSString *minusShow = minuts < 10 ? [NSString stringWithFormat:@"0%i", minuts] : [NSString stringWithFormat:@"%i", minuts];
NSString *secondsShow = seconds < 10 ? [NSString stringWithFormat:@"0%i", seconds] : [NSString stringWithFormat:@"%i", seconds];
totalTimeShowText = [NSString stringWithFormat:@"%@:%@", minusShow, secondsShow];
_showLabel.text = [NSString stringWithFormat:@"00:00 %@", totalTimeShowText];
[self.view addSubview:_showLabel];
// 进度
_processView = [[UISlider alloc]initWithFrame:CGRectMake(100, 260, 500, 15)];
[_processView addTarget:self action:@selector(slideProcess) forControlEvents:UIControlEventValueChanged];
[self.view addSubview:_processView];
}
// 播放
-(void)play
{
NSLog(@"play...");
if(!_mediaPlayer.isPlaying)
{
[_mediaPlayer play];
}
if(!timer)
{
timer = [NSTimer scheduledTimerWithTimeInterval:0.1 target:self selector:@selector(upgrocess) userInfo:nil repeats:YES];
}
}
//停止
-(void)stop
{
if(_mediaPlayer.isPlaying)
{
[_mediaPlayer stop];
}
}
//停止
-(void)pause
{
[_mediaPlayer pause];
}
// 更新进度
-(void)upgrocess
{
_processView.value = _mediaPlayer.currentTime/_mediaPlayer.duration;
int minus = _mediaPlayer.currentTime/60;
int seconds = (int)_mediaPlayer.currentTime%60;
NSString *minusShow = minus < 10 ? [NSString stringWithFormat:@"0%i", minus] : [NSString stringWithFormat:@"%i", minus];
NSString *secondsShow = seconds < 10 ? [NSString stringWithFormat:@"0%i", seconds] : [NSString stringWithFormat:@"%i", seconds];
NSString *currentTimeText = [NSString stringWithFormat:@"%@:%@", minusShow, secondsShow];
_showLabel.text = [NSString stringWithFormat:@"%@ / %@", currentTimeText, totalTimeShowText];
}
// 拖动
-(void)slideProcess
{
_mediaPlayer.currentTime = _mediaPlayer.duration * _processView.value;
[self upgrocess];
}