视频播放
//
// VideoViewController.m
// LIBAOZHENG0826
//
// Created by 张艳锋 on 15/8/30.
// Copyright (c) 2015年 张艳锋. All rights reserved.
//
#import "VideoViewController.h"
@interface VideoViewController ()
{
AVPlayer *player;
UISlider *_slider;
UILabel *timeLabel;
AVPlayerItem *playeritem;
UISlider *volumeSlider;
}
@property (weak, nonatomic) IBOutlet UIButton *doJumpbutton;
@property (weak, nonatomic) IBOutlet UIButton *doBackbutton;
- (IBAction)doBackButton:(UIButton *)sender ;
- (IBAction)doJump:(id)sender;
@end
@implementation VideoViewController
static int z=0;
- (void)viewDidLoad {
[super viewDidLoad];
NSLog(@"FWERW");
NSString *urlPath=[[NSBundle mainBundle]pathForResource:@"hhh.mp4" ofType:nil];
NSURL *url=[[NSURL alloc]initFileURLWithPath:urlPath];
//AVURLAsset继承自AVAset，表示媒体的抽象类
AVURLAsset *movieAsset=[[AVURLAsset alloc]initWithURL:url options:nil];
//资源管理对象以及演示设置（资源缓冲状态）
playeritem=[AVPlayerItem playerItemWithAsset:movieAsset];
//添加通知
[playeritem addObserver:self forKeyPath:@"status" options:NSKeyValueObservingOptionNew context:NULL];
//播放器
player=[AVPlayer playerWithPlayerItem:playeritem];
[player setAllowsExternalPlayback:YES];
AVPlayerLayer *layer=[AVPlayerLayer playerLayerWithPlayer:player];
//投影规格
layer.frame=CGRectMake(58, 40, 450,240);
//
layer.videoGravity=AVLayerVideoGravityResizeAspect;
[self.view.layer addSublayer:layer];
_slider=[[UISlider alloc]initWithFrame: CGRectMake(58, 300, 450, 20)];
_slider.backgroundColor=[UIColor clearColor];
_slider.value=0;
_slider.minimumValue=0;
_slider.maximumValue=1;
[_slider setMaximumTrackImage:[UIImage imageNamed:@"播放进度条"] forState:UIControlStateNormal];
[_slider setMinimumTrackImage:[UIImage imageNamed:@"播放进度条2"] forState:UIControlStateNormal];
[_slider setThumbImage:[UIImage imageNamed:@"进度滑块"] forState:UIControlStateNormal];
[_slider setThumbImage:[UIImage imageNamed:@"进度滑块"] forState:UIControlStateHighlighted];
//注意这里要加UIControlStateHightlighted的状态，否则当拖动滑块时滑块将变成原生的控件
[_slider addTarget:self action:@selector(sliderValueChanged:) forControlEvents:UIControlEventValueChanged];
[_slider addTarget:self action:@selector(sliderDragUp:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:_slider];
}
-(void)viewWillAppear:(BOOL)animated{
}
//返回按钮事件
- (IBAction)doBackButton:(UIButton *)sender {
//返回上一视图
[player pause];
//返回上一视图控制器控制的视图
[self dismissViewControllerAnimated:YES completion:nil];
}
- (IBAction)doJump:(id)sender {
//跳向指定视图
//方法 1.根据指定的类 创建视图控制器 2.借用presentViewController方法跳向指定视图
ChartsViewController *chartsVC=[[ChartsViewController alloc]initWithNibName:@"ChartsViewController" bundle:nil];
[self presentViewController:chartsVC animated:YES completion:nil];
}
//移除通知，防止跳出或退出此视图时程序崩溃
-(void)dealloc{
[playeritem removeObserver:self forKeyPath:@"status" context:NULL];
}
-(void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
if ([keyPath isEqualToString:@"status"]) {
if (AVPlayerItemStatusReadyToPlay == player.currentItem.status) {
[player play];
//添加计时器。
[NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(showMovieTime:) userInfo:nil repeats:YES];
}
}
}
//返回视频的总时间
-(NSTimeInterval)playerDuration
{
AVPlayerItem *item=player.currentItem;//获取资源管理者
if (item.status == AVPlayerItemStatusReadyToPlay) {
return CMTimeGetSeconds(player.currentItem.duration);
}
else{
return (CMTimeGetSeconds(kCMTimeInvalid));
}
}
//返回当前播放时间
-(NSTimeInterval)playerCurrentime
{
AVPlayerItem *item=player.currentItem;//获取资源管理者
if (item.status == AVPlayerItemStatusReadyToPlay) {
if (CMTimeGetSeconds(player.currentItem.currentTime)==CMTimeGetSeconds(player.currentItem.duration)) {
NSLog(@"end");
}
return CMTimeGetSeconds(player.currentItem.currentTime);
}
else{
return (CMTimeGetSeconds(kCMTimeInvalid));
}
}
//显示播放时间
-(void)showMovieTime:(NSTimer *)timer{
float duration=[self playerDuration];
float current=[self playerCurrentime];
float sliderNum=current/duration;
NSLog(@"%f",sliderNum);
_slider.value=sliderNum;
int a=(int)current/60;
int b=(int)current%60;
int c=(int)duration/60;
int d=(int)duration%60;
NSString *timeString=[NSString stringWithFormat:@"%02d:%02d/%02d:%02d",a,b,c,d];
timeLabel.text=timeString;
_slider.value=current/duration;
if (current>=duration) {
[timer invalidate];
[player pause];
}
}
-(void)sliderDragUp:(UISlider *)slider1
{
NSLog(@"slider:11111");
}
//改变滑动条值
-(void)sliderValueChanged:(UISlider *)slider2
{
float sliderValue=slider2.value;
float allTime=[self playerDuration];
CMTime changeTime=CMTimeMake(sliderValue*allTime, 1);
[player.currentItem seekToTime:changeTime];
}
//点击按钮隐藏，点击按钮显现
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
if (z==0) {
self.view.backgroundColor=[UIColor blackColor];
_doBackbutton.hidden=YES;
_doJumpbutton.hidden=YES;
_slider.hidden=YES;
z=1;
}
else {
self.view.backgroundColor=[UIColor whiteColor];
_doBackbutton.hidden=NO;
_doJumpbutton.hidden=NO;
_slider.hidden=NO;
z=0;
}
}
@end
