iOS提供了叫做MPMoviePlayerController? MPMoviePlayerViewController兩個(gè)類，可以輕松用來實(shí)現(xiàn)視頻播放。MPMoviePlayerViewController只能全屏播放視頻。
#import "MainViewController.h"#import@interface MainViewController ()
//視頻播放器
@property (strong, nonatomic) MPMoviePlayerController *player;
@property (strong, nonatomic) UIImageView *imageView;
@end
@implementation MainViewController
- (void)viewDidLoad
{
[super viewDidLoad];
//實(shí)例化視頻播放器
NSURL *url = [[NSBundle mainBundle]URLForResource:@"promo_full" withExtension:@"mp4"];
//視頻播放是流媒體的播放模式，所謂流媒體就是把視頻數(shù)據(jù)像流水一樣，變加載，變播放。
//? ? //提示：如果url中包含中文，需要添加百分號(hào)。
//? ? NSString *urlString = @"http:www.xxx.com/video/xxx.mp4";
//? ? NSURL *url = [NSURL URLWithString:[urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
self.player = [[MPMoviePlayerController alloc]initWithContentURL:url];
//1設(shè)置播放器的大小
[self.player.view setFrame:CGRectMake(0, 0, 320, 180)]; //16:9是主流媒體的樣式
//2將播放器視圖添加到根視圖
[self.view addSubview:self.player.view];
//4播放
[self.player play];
//[self.player stop];
//通過通知中心，以觀察者模式監(jiān)聽視頻播放狀態(tài)
//1 監(jiān)聽播放狀態(tài)
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(stateChange) name:MPMoviePlayerPlaybackStateDidChangeNotification object:nil];
//2 監(jiān)聽播放完成
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(finishedPlay) name:MPMoviePlayerPlaybackDidFinishNotification object:nil];
//3視頻截圖
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(caputerImage:) name:MPMoviePlayerThumbnailImageRequestDidFinishNotification object:nil];
//3視頻截圖
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(caputerImage:) name:MPMoviePlayerThumbnailImageRequestDidFinishNotification object:nil];
//4退出全屏通知
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(exitFullScreen) name:MPMoviePlayerDidExitFullscreenNotification object:nil];
//異步視頻截圖,可以在attimes指定一個(gè)或者多個(gè)時(shí)間。
[self.player requestThumbnailImagesAtTimes:@[@10.0f, @20.0f] timeOption:MPMovieTimeOptionNearestKeyFrame];
UIImageView *thumbnailImageView = [[UIImageView alloc]initWithFrame:CGRectMake(80, 200, 160, 90)];
self.imageView = thumbnailImageView;
[self.view addSubview:thumbnailImageView];
}
#pragma mark 退出全屏
- (void)exitFullScreen
{
NSLog(@"退出全屏");
}
#pragma mark -播放器事件監(jiān)聽
#pragma mark 視頻截圖 這個(gè)方法是異步方法
- (void)caputerImage:(NSNotification *)notification
{
NSLog(@"截圖 %@", notification);
UIImage *image = notification.userInfo[@"MPMoviePlayerThumbnailImageKey"];
[self.imageView setImage:image];
}
#pragma mark 播放器事件監(jiān)聽
#pragma mark 播放完成
- (void)finishedPlay
{
NSLog(@"播放完成");
}
#pragma mark 播放器視頻的監(jiān)聽
#pragma mark 播放狀態(tài)變化
/*
MPMoviePlaybackStateStopped,? //停止
MPMoviePlaybackStatePlaying,? //播放
MPMoviePlaybackStatePaused,? //暫停
MPMoviePlaybackStateInterrupted,? //中斷
MPMoviePlaybackStateSeekingForward, //快進(jìn)
MPMoviePlaybackStateSeekingBackward? //快退
*/
- (void)stateChange
{
switch (self.player.playbackState) {
case MPMoviePlaybackStatePaused:
NSLog(@"暫停");
break;
case MPMoviePlaybackStatePlaying:
//設(shè)置全屏播放
[self.player setFullscreen:YES animated:YES];
NSLog(@"播放");
break;
case MPMoviePlaybackStateStopped:
//注意：正常播放完成，是不會(huì)觸發(fā)MPMoviePlaybackStateStopped事件的。
//調(diào)用[self.player stop];方法可以觸發(fā)此事件。
NSLog(@"停止");
break;
default:
break;
}
}
@end
