//

//  ViewController.m

//  04-AVPlayer播放视频

//

//  Created by鹿微微鹿 on 16/5/6.

//  Copyright (c) 2016年 鹿微微鹿. All rights reserved.

//

#import "ViewController.h"

#import <AVFoundation/AVFoundation.h>

@interface ViewController ()

{

//播放器

AVPlayer *_player;

//显示画面的Layer

AVPlayerLayer *imageLayer;

UIProgressView *progress;

}

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

NSString *path =

@"http://otmv.alicdn.com/new/mv_1_6/23/77/2306cd13e3dde338b53f404ece43a277.mp4?k=7125c1a8f09b70bb&t=1451830866";

//1.创建item

AVPlayerItem *item = [[AVPlayerItem alloc]

initWithURL:[NSURL URLWithString:path]];

//2.创建播放器对象

_player = [AVPlayer playerWithPlayerItem:item];

//3.播放

[_player play];

//==================显示图像========================

//4.创建显示视频的layer专门用来显示视频图像的

//参数:播放器

imageLayer   = [AVPlayerLayer playerLayerWithPlayer:

_player];

//2.设置frame

imageLayer.frame = self.view.bounds;

//3.添加到界面上

[self.view.layer addSublayer:imageLayer];

//4.获取视频界面的大小

CGRect rect = imageLayer.videoRect;

//=========屏幕旋转==================

[[NSNotificationCenter defaultCenter]

addObserver:self selector:@selector(screenChangeSite) name:UIApplicationDidChangeStatusBarOrientationNotification object:nil];

}

- (void)viewWillAppear:(BOOL)animated{

[super viewWillAppear:animated];

CGRect rect = imageLayer.videoRect;

//5.创建一个进度条

progress = [[UIProgressView alloc]

initWithFrame:CGRectMake(rect.origin.x,rect.origin.y+rect.size.height, rect.size.width, 10)];

[self.view addSubview:progress];

__weak UIProgressView *p = progress;

[_player addPeriodicTimeObserverForInterval:CMTimeMake(1,10 ) queue:dispatch_get_main_queue() usingBlock:^(CMTime time) {

//更新进度

//总时间

float total =  _player.currentItem.duration.value / _player.currentItem.duration.timescale;

//当前时间

float current = time.value * 1.0f/time.timescale;

p.progress = current/total;

}];

//显示样式

//AVLayerVideoGravityResizeAspect 默认的，没有缩放

//AVLayerVideoGravityResize:layer有多大就显示多大视频有缩放

//AVLayerVideoGravityResizeAspectFill 按比例缩放，显示不全

[imageLayer setVideoGravity:AVLayerVideoGravityResizeAspect];

}

#pragma mark - 屏幕旋转frame改变

- (void)screenChangeSite{

NSLog(@"屏幕旋转");

imageLayer.frame = self.view.bounds;

CGRect rect = imageLayer.videoRect;

progress.frame = CGRectMake(rect.origin.x,rect.origin.y+rect.size.height, rect.size.width, 10);

}

@end