1.引入系統框架
2.創建視頻的url
3.創建播放項目
4.初始化播放器
5.設置播放頁面
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//引入系統文件
#import <AVFoundation/AVFoundation.h>
#import <AVKit/AVKit.h>
@interface
ViewController ()
/**
* 控制視頻播放的控件
*/
@property
(weak,
nonatomic
)
IBOutlet
UISlider *progressSlider;
/**
* 聲明播放視頻的控件屬性[既可以播放視頻也可以播放音頻]
*/
@property
(
nonatomic
,strong)AVPlayer *player;
/**
* 播放的總時長
*/
@property
(
nonatomic
,assign)CGFloat sumPlayOperation;
@end
@implementation
ViewController
- (
void
)viewDidLoad {
[
super
viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
//設置播放的url
NSURL
*url = [
NSURL
URLWithString:playString];
//設置播放的項目
AVPlayerItem *item = [[AVPlayerItem alloc] initWithURL:url];
//初始化player對象
self
.player = [[AVPlayer alloc] initWithPlayerItem:item];
//設置播放頁面
AVPlayerLayer *layer = [AVPlayerLayer playerLayerWithPlayer:_player];
//設置播放頁面的大小
layer.frame = CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, 300);
layer.backgroundColor = [UIColor cyanColor].CGColor;
//設置播放窗口和當前視圖之間的比例顯示內容
layer.videoGravity = AVLayerVideoGravityResizeAspect;
//添加播放視圖到self.view
[
self
.view.layer addSublayer:layer];
//設置播放進度的默認值
self
.progressSlider.value = 0;
//設置播放的默認音量值
self
.player.volume = 1.0f;
}
#pragma mark - 開始按鈕響應方法
- (
IBAction
)startPlayer:(
id
)sender {
[
self
.player play];
}
#pragma mark - 暫停按鈕響應方法
- (
IBAction
)stopPlayer:(
id
)sender {
[
self
.player pause];
}
#pragma mark - 改變進度
- (
IBAction
)changeProgress:(
id
)sender {
self
.sumPlayOperation =
self
.player.currentItem.duration.value/
self
.player.currentItem.duration.timescale;
//CMTimeMake(a,b) a表示當前時間，b表示每秒鍾有多少幀
[
self
.player seekToTime:CMTimeMakeWithSeconds(
self
.progressSlider.value*
self
.sumPlayOperation,
self
.player.currentItem.duration.timescale) completionHandler:^(
BOOL
finished) {
[
self
.player play];
}];
}
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