如何申請陰影的視頻在iOS應用

Question

我試圖陰影應用到視頻中這樣說：

moviePlayer.view.frame = CGRectMake(83, 123, 629, 424); 
[self.view addSubview:moviePlayer.view]; 

videoLayer = [CALayer layer]; 
videoLayer.contents = (id)moviePlayer.view; 
videoLayer.frame = moviePlayer.view.frame; 

videoLayer.shadowOffset = CGSizeMake(0, 3); 
videoLayer.shadowRadius = 5.0; 
videoLayer.shadowColor = [UIColor blackColor].CGColor; 
videoLayer.shadowOpacity = 0.8; 

[self.view.layer addSublayer:videoLayer]; 

[moviePlayer play]; 

但是陰影不會出現。怎麼了？

Answer 1

moviePlayer.view.frame = CGRectMake(83, 123, 629, 424); 
[self.view addSubview:moviePlayer.view]; 

moviePlayer.view.layer.shadowOffset = CGSizeMake(0, 3); 
moviePlayer.view.layer.shadowRadius = 5.0; 
moviePlayer.view.layer.shadowColor = [UIColor blackColor].CGColor; 
moviePlayer.view.layer.shadowOpacity = 0.8; 

[moviePlayer play]; 

試試看。