我有一个类在回调中返回 AVPlayer 和 AVSynchronisedLayer。当我使用 AVPlayer 初始化 AVPlayerLayer 时，我崩溃了(只发生在模拟器中)。代码如下所示:
self.projectPlayer = [[MYMobilePlayer alloc] init];
[self.projectPlayer setDelegate:self];
[self.projectPlayer returnPlayerForProjectScene:self.projectScene andCallback:^(NSError *error, AVPlayer *player, AVSynchronizedLayer *syncLayer) {
self.syncLayer = syncLayer;
AVPlayerLayer *playerLayer = [AVPlayerLayer playerLayerWithPlayer:player];
NSLog(@"%@",playerLayer); // Also crashes if I assign to private member variable
// More code that uses the playerLayer - not needed to illustrate the problem
}];
回调中返回的对象是正确的，所以我认为我不需要显示创建和返回它们的代码。
堆栈跟踪如下所示(不是很有帮助)。
知道这里会发生什么吗？
最佳答案
UIKit 代码应始终在主线程上调用。您的 returnPlayerForProjectScene 回调发生在其他视频处理线程上。将有问题的代码分派(dispatch)到主队列应该可以解决您的崩溃问题:
[self.projectPlayer returnPlayerForProjectScene:self.projectScene andCallback:^(NSError *error, AVPlayer *player, AVSynchronizedLayer *syncLayer) {
dispatch_async(dispatch_get_main_queue(), ^{
self.syncLayer = syncLayer;
AVPlayerLayer *playerLayer = [AVPlayerLayer playerLayerWithPlayer:player];
NSLog(@"%@",playerLayer); // Also crashes if I assign to private member variable
// More code that uses the playerLayer - not needed to illustrate the problem
});
}];
关于ios - 创建 AVPlayerLayer 会导致模拟器崩溃，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/40417413/