我们在项目中会遇到播放音频的功能，自己也研究了一下，搞了一个小的功能播放器，供大家交流。
我们用之前应该导入mediaolayer的框架。
// MoviePlayerViewController.m
// Player
//
// Created by dllo on 15/11/7.
// Copyright © 2015年 zhaoqingwen. All rights reserved.
//
#import "MoviePlayerViewController.h"
#import <AVFoundation/AVFoundation.h>
#import <MediaPlayer/MediaPlayer.h>
@interface MoviePlayerViewController ()
@property(nonatomic,strong)AVPlayer *player; // 播放属性
@property(nonatomic,strong)AVPlayerItem *playerItem; // 播放属性
@property(nonatomic,assign)CGFloat width; // 坐标
@property(nonatomic,assign)CGFloat height; // 坐标
@property(nonatomic,strong)UISlider *slider; // 进度条
@property(nonatomic,strong)UILabel *currentTimeLabel; // 当前播放时间
@property(nonatomic,strong)UILabel *systemTimeLabel; // 系统时间
@property(nonatomic,strong)UIView *backView; // 上面一层Viewd
@property(nonatomic,assign)CGPoint startPoint;
@property(nonatomic,assign)CGFloat systemVolume;
@property(nonatomic,strong)UISlider *volumeViewSlider;
@property(nonatomic,strong)UIActivityIndicatorView *activity; // 系统菊花
@property(nonatomic,strong)UIProgressView *progress; // 缓冲条
@property(nonatomic,strong)UIView *topView;
@end
@implementation MoviePlayerViewController
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self name:AVPlayerItemDidPlayToEndTimeNotification object:_player.currentItem];
}
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor blackColor];
_width = [[UIScreen mainScreen]bounds].size.height;
_height = [[UIScreen mainScreen]bounds].size.width;
// 创建AVPlayer
self.playerItem = [AVPlayerItem playerItemWithURL:[NSURL URLWithString:@"http://m3u8back.gougouvideo.com/m3u8_yyyy?i=4275259"]];
self.player = [AVPlayer playerWithPlayerItem:_playerItem];
AVPlayerLayer *playerLayer = [AVPlayerLayer playerLayerWithPlayer:_player];
playerLayer.frame = CGRectMake(0, 0, _width, _height);
playerLayer.videoGravity = AVLayerVideoGravityResize;
[self.view.layer addSublayer:playerLayer];
[_player play];
//AVPlayer播放完成通知
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayDidEnd:) name:AVPlayerItemDidPlayToEndTimeNotification object:_player.currentItem];
self.backView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, _width, _height)];
[self.view addSubview:_backView];
_backView.backgroundColor = [UIColor clearColor];
self.topView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, _width, _height * 0.15)];
_topView.backgroundColor = [UIColor blackColor];
_topView.alpha = 0.5;
[_backView addSubview:_topView];
[self.playerItem addObserver:self forKeyPath:@"loadedTimeRanges" options:NSKeyValueObservingOptionNew context:nil];// 监听loadedTimeRanges属性
[self createProgress];
[self createSlider];
[self createCurrentTimeLabel];
[self createButton];
[self backButton];
[self createTitle];
[self createGesture];
[self customVideoSlider];
self.activity = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
_activity.center = _backView.center;
[self.view addSubview:_activity];
[_activity startAnimating];
// //延迟线程
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(7 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[UIView animateWithDuration:0.5 animations:^{
_backView.alpha = 0;
}];
});
//计时器
[NSTimer scheduledTimerWithTimeInterval:1.f target:self selector:@selector(Stack) userInfo:nil repeats:YES];
// self.modalPresentationCapturesStatusBarAppearance = YES;
}
#pragma mark - 横屏代码
- (BOOL)shouldAutorotate{
return NO;
} //NS_AVAILABLE_IOS(6_0);当前viewcontroller是否支持转屏
- (UIInterfaceOrientationMask)supportedInterfaceOrientations{
return UIInterfaceOrientationMaskLandscape;
} //当前viewcontroller支持哪些转屏方向
-(UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
return UIInterfaceOrientationLandscapeRight;
}
- (BOOL)prefersStatusBarHidden
{
return NO; // 返回NO表示要显示，返回YES将hiden
}
#pragma mark - 创建UISlider
- (void)createSlider
{
self.slider = [[UISlider alloc]initWithFrame:CGRectMake(100, 345, _width * 0.7, 15)];
[self.backView addSubview:_slider];
[_slider setThumbImage:[UIImage imageNamed:@"iconfont-yuan.png"] forState:UIControlStateNormal];
[_slider addTarget:self action:@selector(progressSlider:) forControlEvents:UIControlEventValueChanged];
_slider.minimumTrackTintColor = [UIColor colorWithRed:30 / 255.0 green:80 / 255.0 blue:100 / 255.0 alpha:1];
}
#pragma mark - slider滑动事件
- (void)progressSlider:(UISlider *)slider
{
//拖动改变视频播放进度
if (_player.status == AVPlayerStatusReadyToPlay) {
// //计算出拖动的当前秒数
CGFloat total = (CGFloat)_playerItem.duration.value / _playerItem.duration.timescale;
// NSLog(@"%f", total);
NSInteger dragedSeconds = floorf(total * slider.value);
// NSLog(@"dragedSeconds:%ld",dragedSeconds);
//转换成CMTime才能给player来控制播放进度
CMTime dragedCMTime = CMTimeMake(dragedSeconds, 1);
[_player pause];
[_player seekToTime:dragedCMTime completionHandler:^(BOOL finish){
[_player play];
}];
}
}
#pragma mark - 创建UIProgressView
- (void)createProgress
{
self.progress = [[UIProgressView alloc]initWithFrame:CGRectMake(102, 352, _width * 0.69, 15)];
[_backView addSubview:_progress];
}
#pragma mark -
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSString *,id> *)change context:(void *)context
{
if ([keyPath isEqualToString:@"loadedTimeRanges"]) {
NSTimeInterval timeInterval = [self availableDuration];// 计算缓冲进度
// NSLog(@"Time Interval:%f",timeInterval);
CMTime duration = self.playerItem.duration;
CGFloat totalDuration = CMTimeGetSeconds(duration);
[self.progress setProgress:timeInterval / totalDuration animated:NO];
}
}
- (NSTimeInterval)availableDuration {
NSArray *loadedTimeRanges = [[_player currentItem] loadedTimeRanges];
CMTimeRange timeRange = [loadedTimeRanges.firstObject CMTimeRangeValue];// 获取缓冲区域
float startSeconds = CMTimeGetSeconds(timeRange.start);
float durationSeconds = CMTimeGetSeconds(timeRange.duration);
NSTimeInterval result = startSeconds + durationSeconds;// 计算缓冲总进度
return result;
}
- (void)customVideoSlider {
UIGraphicsBeginImageContextWithOptions((CGSize){ 1, 1 }, NO, 0.0f);
UIImage *transparentImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
// [self.slider setMinimumTrackImage:transparentImage forState:UIControlStateNormal];
[self.slider setMaximumTrackImage:transparentImage forState:UIControlStateNormal];
}
#pragma mark - 创建播放时间
- (void)createCurrentTimeLabel
{
self.currentTimeLabel = [[UILabel alloc]initWithFrame:CGRectMake(_width *0.86, 342, 100, 20)];
[self.backView addSubview:_currentTimeLabel];
_currentTimeLabel.textColor = [UIColor whiteColor];
// _currentTimeLabel.backgroundColor = [UIColor blueColor];
_currentTimeLabel.font = [UIFont systemFontOfSize:12];
_currentTimeLabel.text = @"00:00/00:00";
}
#pragma mark - 计时器事件
- (void)Stack
{
if (_playerItem.duration.timescale != 0) {
_slider.maximumValue = 1;//音乐总共时长
_slider.value = CMTimeGetSeconds([_playerItem currentTime]) / (_playerItem.duration.value / _playerItem.duration.timescale);//当前进度
//当前时长进度progress
NSInteger proMin = (NSInteger)CMTimeGetSeconds([_player currentTime]) / 60;//当前秒
NSInteger proSec = (NSInteger)CMTimeGetSeconds([_player currentTime]) % 60;//当前分钟
// NSLog(@"%d",_playerItem.duration.timescale);
// NSLog(@"%lld",_playerItem.duration.value/1000 / 60);
//duration 总时长
NSInteger durMin = (NSInteger)_playerItem.duration.value / _playerItem.duration.timescale / 60;//总秒
NSInteger durSec = (NSInteger)_playerItem.duration.value / _playerItem.duration.timescale % 60;//总分钟
self.currentTimeLabel.text = [NSString stringWithFormat:@"%02ld:%02ld / %02ld:%02ld", proMin, proSec, durMin, durSec];
}
if (_player.status == AVPlayerStatusReadyToPlay) {
[_activity stopAnimating];
} else {
[_activity startAnimating];
}
}
#pragma mark - 播放和下一首按钮
- (void)createButton
{
UIButton *startButton = [UIButton buttonWithType:UIButtonTypeCustom];
startButton.frame = CGRectMake(15, 337, 30, 30);
[self.backView addSubview:startButton];
if (_player.rate == 1.0) {
[startButton setBackgroundImage:[UIImage imageNamed:@"pauseBtn@2x.png"] forState:UIControlStateNormal];
} else {
[startButton setBackgroundImage:[UIImage imageNamed:@"playBtn@2x.png"] forState:UIControlStateNormal];
}
[startButton addTarget:self action:@selector(startAction:) forControlEvents:UIControlEventTouchUpInside];
UIButton *nextButton = [UIButton buttonWithType:UIButtonTypeCustom];
nextButton.frame = CGRectMake(60, 340, 25, 25);
[self.backView addSubview:nextButton];
[nextButton setBackgroundImage:[UIImage imageNamed:@"nextPlayer@3x.png"] forState:UIControlStateNormal];
}
#pragma mark - 播放暂停按钮方法
- (void)startAction:(UIButton *)button
{
if (button.selected) {
[_player play];
[button setBackgroundImage:[UIImage imageNamed:@"pauseBtn@2x.png"] forState:UIControlStateNormal];
} else {
[_player pause];
[button setBackgroundImage:[UIImage imageNamed:@"playBtn@2x.png"] forState:UIControlStateNormal];
}
button.selected =!button.selected;
}
#pragma mark - 返回按钮方法
- (void)backButton
{
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(15, 20, 30, 30);
[button setBackgroundImage:[UIImage imageNamed:@"iconfont-back.png"] forState:UIControlStateNormal];
[_topView addSubview:button];
[button addTarget:self action:@selector(backButtonAction) forControlEvents:UIControlEventTouchUpInside];
}
#pragma mark - 创建标题
- (void)createTitle
{
UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(80, 20, 250, 30)];
[_backView addSubview:label];
label.textColor = [UIColor whiteColor];
label.textAlignment = NSTextAlignmentCenter;
}
#pragma mark - 创建手势
- (void)createGesture
{
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapAction:)];
[self.view addGestureRecognizer:tap];
//获取系统音量
MPVolumeView *volumeView = [[MPVolumeView alloc] init];
_volumeViewSlider = nil;
for (UIView *view in [volumeView subviews]){
if ([view.class.description isEqualToString:@"MPVolumeSlider"]){
_volumeViewSlider = (UISlider *)view;
break;
}
}
_systemVolume = _volumeViewSlider.value;
}
#pragma mark - 轻拍方法
- (void)tapAction:(UITapGestureRecognizer *)tap
{
if (_backView.alpha == 1) {
[UIView animateWithDuration:0.5 animations:^{
_backView.alpha = 0;
}];
} else if (_backView.alpha == 0){
[UIView animateWithDuration:0.5 animations:^{
_backView.alpha = 1;
}];
}
if (_backView.alpha == 1) {
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(7 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[UIView animateWithDuration:0.5 animations:^{
_backView.alpha = 0;
}];
});
}
}
#pragma mark - 滑动调整音量大小
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
if(event.allTouches.count == 1){
//保存当前触摸的位置
CGPoint point = [[touches anyObject] locationInView:self.view];
_startPoint = point;
}
}
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{
if(event.allTouches.count == 1){
//计算位移
CGPoint point = [[touches anyObject] locationInView:self.view];
// float dx = point.x - startPoint.x;
float dy = point.y - _startPoint.y;
int index = (int)dy;
if(index>0){
if(index%5==0){//每10个像素声音减一格
NSLog(@"%.2f",_systemVolume);
if(_systemVolume>0.1){
_systemVolume = _systemVolume-0.05;
[_volumeViewSlider setValue:_systemVolume animated:YES];
[_volumeViewSlider sendActionsForControlEvents:UIControlEventTouchUpInside];
}
}
}else{
if(index%5==0){//每10个像素声音增加一格
NSLog(@"+x ==%d",index);
NSLog(@"%.2f",_systemVolume);
if(_systemVolume>=0 && _systemVolume<1){
_systemVolume = _systemVolume+0.05;
[_volumeViewSlider setValue:_systemVolume animated:YES];
[_volumeViewSlider sendActionsForControlEvents:UIControlEventTouchUpInside];
}
}
}
//亮度调节
// [UIScreen mainScreen].brightness = (float) dx/self.view.bounds.size.width;
}
}
- (void)moviePlayDidEnd:(id)sender
{
// [_player pause];
[self dismissViewControllerAnimated:YES completion:^{
}];
}
- (void)backButtonAction
{
[_player pause];
[self dismissViewControllerAnimated:YES completion:^{
}];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
@end
