//
//  WFMusicViewController.m
//  WFUtils
//
//  Created by PC on 4/8/16.
//  Copyright © 2016 ibmlib. All rights reserved.
//
#import "WFMusicViewController.h"
#import @interface WFMusicViewController ()@property (strong, nonatomic) AVAudioPlayer *musicPlayer;
@property (strong, nonatomic) UIButton *btnPlay;
@property (strong, nonatomic) UIProgressView *progressView;
/*** 计时器 ***/
@property (strong, nonatomic) NSTimer *timer;
@end
@implementation WFMusicViewController
- (NSTimer *)timer
{
if(_timer == nil)
{
_timer = [NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(updateProgress) userInfo:nil repeats:YES];
}
return _timer;
}
#pragma mark - 初始化相关
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
self.title = @"雪千寻-轻音乐";
// *** 1. 初始化播放器
[self initMusicPlayer];
// *** 2. 初始化播放、暂停按钮
[self createPlayButton];
// *** 3. 初始化进度条
[self createProgress];
}
- (void)initMusicPlayer
{
NSString *filePath = [[NSBundle mainBundle] pathForResource:@"轻音乐 - 雪千寻.mp3" ofType:nil];
self.musicPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:filePath] error:nil];
self.musicPlayer.delegate = self;
}
- (void)createPlayButton
{
self.btnPlay = [UIButton buttonWithType:UIButtonTypeCustom];
self.btnPlay.frame = CGRectMake(50, self.view.frame.size.height - 100, 100, 50);
self.btnPlay.center = CGPointMake(self.view.center.x, self.btnPlay.center.y);
self.btnPlay.backgroundColor = [UIColor greenColor];
[self.btnPlay setTitle:@"播放" forState:UIControlStateNormal];
[self.btnPlay setTitle:@"暂停" forState:UIControlStateSelected];
[self.btnPlay addTarget:self action:@selector(actionToPlay:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:self.btnPlay];
}
- (void)createProgress
{
self.progressView = [[UIProgressView alloc] initWithFrame:CGRectMake(10, 200, self.view.frame.size.width - 20, 20)];
[self.view addSubview:self.progressView];
}
#pragma mark -
- (void)updateProgress
{
float progress = self.musicPlayer.currentTime / self.musicPlayer.duration;
[self.progressView setProgress:progress animated:YES];
}
- (void)actionToPlay:(UIButton *)sender
{
if(!sender.selected)
{
if(![self.musicPlayer isPlaying])
{
[self.musicPlayer play];
self.timer.fireDate = [NSDate distantPast];
}
}
else
{
[self.musicPlayer pause];
self.timer.fireDate = [NSDate distantFuture];
}
sender.selected = !sender.selected;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - delegate AVAudioPlayer
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
{
NSLog(@"音乐播放结束");
self.btnPlay.selected = NO;
[self.progressView setProgress:0];
[self.timer invalidate];
self.timer = nil;
}
/* if an error occurs while decoding it will be reported to the delegate. */
- (void)audioPlayerDecodeErrorDidOccur:(AVAudioPlayer *)player error:(NSError * __nullable)error
{
}
/* AVAudioPlayer INTERRUPTION NOTIFICATIONS ARE DEPRECATED - Use AVAudioSession instead. */
/* audioPlayerBeginInterruption: is called when the audio session has been interrupted while the player was playing. The player will have been paused. */
- (void)audioPlayerBeginInterruption:(AVAudioPlayer *)player NS_DEPRECATED_IOS(2_2, 8_0)
{
}
/* audioPlayerEndInterruption:withOptions: is called when the audio session interruption has ended and this player had been interrupted while playing. */
/* Currently the only flag is AVAudioSessionInterruptionFlags_ShouldResume. */
- (void)audioPlayerEndInterruption:(AVAudioPlayer *)player withOptions:(NSUInteger)flags NS_DEPRECATED_IOS(6_0, 8_0)
{
}
- (void)audioPlayerEndInterruption:(AVAudioPlayer *)player withFlags:(NSUInteger)flags NS_DEPRECATED_IOS(4_0, 6_0)
{
}
- (void)audioPlayerEndInterruption:(AVAudioPlayer *)player
{
}
@end