此方法支持所有可能性：

>用户锁定的屏幕;
>按下主页按钮;
>切换到其他应用程序.

只要你有一个运行iOS的AVPlayer实例就可以防止设备自动锁定.

首先,您需要配置应用程序以支持Info.plist文件中的音频背景,并在UIBackgroundModes数组中添加audio元素.

然后将您的AppDelegate.m放入 – (BOOL)应用程序：(UIApplication *)应用程序didFinishLaunchingWithOptions：(NSDictionary *)launchOptions：

这些方法

[[AVAudioSession sharedInstance] setDelegate: self];    
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];

和#import< AVFoundation / AVFoundation.h>

然后在控制AVPlayer的视图控制器中

-(void)viewDidAppear:(BOOL)animated{
    [super viewDidAppear:animated];
    [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
    [self becomeFirstResponder];
}

和

- (void)viewWillDisappear:(BOOL)animated
{
    [mPlayer pause];    
    [super viewWillDisappear:animated];
    [[UIApplication sharedApplication] endReceivingRemoteControlEvents];
    [self resignFirstResponder];
}

然后回应

- (void)remoteControlReceivedWithEvent:(UIEvent *)event {
    switch (event.subtype) {
        case UIEventSubtypeRemoteControlTogglePlayPause:
            if([mPlayer rate] == 0){
                [mPlayer play];
            } else {
                [mPlayer pause];
            }
            break;
        case UIEventSubtypeRemoteControlPlay:
            [mPlayer play];
            break;
        case UIEventSubtypeRemoteControlPause:
            [mPlayer pause];
            break;
        default:
            break;
    }
}

如果用户按下主页按钮,则需要另一个技巧来恢复再现(在这种情况下,再现以淡出暂停).

当你控制视频的再现(我有播放：和暂停：方法)设置

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationDidEnterBackground:) name:UIApplicationDidEnterBackgroundNotification object:nil];

和

[[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationDidEnterBackgroundNotification object:nil];

以及将启动计时器并恢复再现的相应方法.

- (void)applicationDidEnterBackground:(NSNotification *)notification
{
    [mPlayer performSelector:@selector(play) withObject:nil afterDelay:0.01];
}