带有自定义初始化程序的UITableViewCell dequeueReusableCellWithIdentifier [英] UITableViewCell dequeueReusableCellWithIdentifier with custom initializer

问题描述

我正在使用[UITableView registerClass: forReuseIdentifier:]和[UITableView dequeueReusableCellWithIdentifier:]以便将UITableViewCells排队和出队.

I'm using [UITableView registerClass: forReuseIdentifier:] and [UITableView dequeueReusableCellWithIdentifier:] in order to queue and dequeue UITableViewCells.

例如，在viewDidLoad中:

For example, in viewDidLoad:

[self.storeTableView registerClass:[StoreLineGraphCell class] forCellReuseIdentifier:@"StoreLineGraphCellIdentifier"];

在cellForRowAtIndexPath中:

And in cellForRowAtIndexPath:

StoreLineGraphCell *cell = (StoreLineGraphCell*)[self.storeTableView dequeueReusableCellWithIdentifier:@"StoreLineGraphCellIdentifier"];

在执行此操作时，将为UITableViewCell调用initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier初始化程序.问题是我需要使用自定义初始化程序才能创建具有必要选项的单元格.例如，可以执行以下操作:

In doing this, the initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier initializer is called for the UITableViewCell. The problem is that I need to use a custom initializer in order to create the cell with necessary options. For example, the ability to do something like this:

StoreLineGraphCell *cell = [[StoreLineGraphCell alloc] initWithReuseIdentifier:@"StoreLineGraphCell" isLocked:YES isUpcoming:YES];

使用registerClass& dequeue模式.我想将其保留在初始化程序中，因为它只能运行一次，而不是每次单元出队时都运行一次.有没有合适的方法来实现这一目标?

This doesn't seem possible with the registerClass & dequeue pattern. I'd like to keep it in an initializer as it should only be run once, not every time the cell is dequeued. Is there a proper way to accomplish this?

推荐答案

虽然您遵循通常的单元重用模式(就像您对寄存器类和出队操作一样)，但我认为不容易实现的方式.

While you follow the usual pattern for cell re-usage (as you do with register class & dequeue), I do not see an easy to implement way of doing that.

如果我是我，我将创建一个附加的初始化方法(不遵循obj-c的常规init模式)或简单地使用setter并在dequeueReusableCellWithIdentifier调用之后进行调用.

If I were you I would create an additional initialization method (not following the usual init pattern of obj-c) or simply setters and call that following the dequeueReusableCellWithIdentifier call.

StoreLineGraphCell *cell = (StoreLineGraphCell*)[self.storeTableView dequeueReusableCellWithIdentifier:@"StoreLineGraphCellIdentifier"];
[cell furtherInitWithLocked:YES andUpcoming:NO]; // ... or so

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