Question

我制作了一个示例演示，在我的视图中播放了一个视频。

代码：

- (IBAction)playVideo:(id)sender
{
    NSURL *videoURL = [NSURL fileURLWithPath:[[NSBundle mainBundle]pathForResource:@"sample_Video" ofType:@"mp4"]];
    self.player = [AVPlayer playerWithURL:videoURL];

    AVPlayerLayer* playerLayer = [AVPlayerLayer playerLayerWithPlayer:self.player];
    playerLayer.frame = self.videoView.bounds;
    [self.videoView.layer addSublayer:playerLayer];
    [self.player play];
    self.slider.hidden = NO;
    self.playButton.enabled = NO;
    self.pauseButton.enabled = YES;

}

-(IBAction)pauseVideo:(id)sender
{
    [self.player pause];
    self.playButton.enabled = YES;
    self.pauseButton.enabled = NO;

}

我的问题是当我点击播放我的视频播放时。当我点击暂停时，我的视频暂停了。

但是当我再次点击播放时，它又开始了。我想恢复功能。

Answer 1

这是因为您正在重新初始化播放器。做这个技巧

在.h中声明一个变量 BOOL isResumed = false;

现在将您的代码更新为此

-(IBAction)playVideo:(id)sender {
    if(isResumed) {
        [self.player play];
        self.pauseButton.enabled = YES;
    }
    else{
        NSURL *videoURL = [NSURL fileURLWithPath:[[NSBundle mainBundle]pathForResource:@"sample_Video" ofType:@"mp4"]];
        self.player = [AVPlayer playerWithURL:videoURL];

        AVPlayerLayer* playerLayer = [AVPlayerLayer playerLayerWithPlayer:self.player];
        playerLayer.frame = self.videoView.bounds;
        [self.videoView.layer addSublayer:playerLayer];
        [self.player play];
        self.slider.hidden = NO;
        self.playButton.enabled = NO;
        self.pauseButton.enabled = YES;
    }
}

-(IBAction)pauseVideo:(id)sender {
    isResumed = true;
    [self.player pause];
    self.playButton.enabled = YES;
    self.pauseButton.enabled = NO;

}

Answer 2

这是因为在你的playVideo方法中你正在创建AVPlayer的新实例。添加'if'条件以检查您是否已经拥有AVPlayer然后只需恢复它。在playVideo方法的开头添加此代码：

public modalResponse: Observable<boolean> = new Observable((observer) => { });

public saveChanges() { ///OPEN MODAL AFTER CANDEAC
    this.openSaveChangeModal();
    return this.modalResponse.take(1);
}

canDeactivate(component: CheckoutComponent){
    if(this.nav)
        return true;

    else{
        component.saveChanges(); // Opens modal
    return component.modalResponse.take(1);
    }
}

// Modal save changes
public openSaveChangeModal() {
    jQuery('#deactModal').modal();
}

public acceptNavigate(){
    this.modalResponse = new Observable((observer) => {observer.next(true); });
    jQuery('#deactModal').modal('hide');
}

public cancelNavigate(){
    this.modalResponse = new Observable((observer) => { observer.next(false); });

    jQuery('#deactModal').modal('hide');
}

如何恢复我在AV播放器中暂停的视频？

2 个答案: