的UIImageView * XXX = [[UIImageView的頁頭] initWithImage：XXX]

Question

是什麼這行代碼：

UIImageView* flakeView = [[UIImageView alloc] initWithImage:flakeImage]; 

，如果它再幫我有這樣的：

int startX2 = round(random() % 480); 
// set the flake start position 
flakeView.frame = CGRectMake(startX2, 330.0, 30, 20); 
flakeView.alpha = 1; 

// put the flake in our main view 
[self.view addSubview:flakeView]; 

Answer 1

行：

UIImageView* flakeView = [[UIImageView alloc] initWithImage:flakeImage];

創建容器"UIImageView"包含圖像0的對象存儲在ivar中flakeImage

其餘代碼位置flakeView在主視圖上分配有x，y，寬度和hight屬性。