7、iOS开发：视图、视图控制器与文本视图详解

iOS开发：视图、视图控制器与文本视图详解

1. 视图初始化与销毁方法

在开发中，视图的初始化和销毁是重要的操作。以下是两个关键方法的模板：

@implementation MainView
- (id)initWithFrame:(CGRect)rect {
    /* Call the super class's initWithFrame method first,
     * to initialize the UIView object */
    self = [ super initWithFrame: rect ];
    /* If the object has already been initialized, self will be nil */
    if (self != nil) {
        /* Initialize your class's variables here */
        /* Allocate your class's initial resources here */
    }
    return self;
}
- (void)dealloc
{
    /* Deallocate your class's resources here */
    /* Call the super class's dealloc method,
     * to deallocate any resources held by UIView */
    [ super dealloc ];
}
@end

这两个方法分别