blocks|key|708986|text|将每个按钮标记设置为indexPath.row。然后只需声明函数：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|708987|-+(void)quantityDown:(id)sender|code-block|syntax|javascript|708988|在该方法中，执行以下操作：|708989|UIButton+*btn+=+(UIButton+*)sender;|708990|像这样添加目标：|708991|[buttonDown+addTarget:self+action:@selector(quantityDown:)+forControlEvents:UIControlEventTouchUpInside];|708992|您可以从btn.tag获取行号。希望这能有所帮助。:)|708993|entityMap^0|A|D|0|0|0|0|0|0|4|7|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|10|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|12|8|@]|D|@]|E|$]]|$1|Q|3|R|5|H|7|13|8|@]|D|@]|E|$I|J]]|$1|S|3|T|5|6|7|14|8|@$9|15|A|16|B|C]]|D|@]|E|$]]|$1|U|3|-4|5|6|7|17|8|@]|D|@]|E|$]]]|V|$]]

Set each button tag as <code>indexPath.row</code>. Then just declare the function:

<pre><code>- (void)quantityDown:(id)sender
</code></pre>

In that method do this:

<pre><code>UIButton *btn = (UIButton *)sender;
</code></pre>

Add target like this:

<pre><code>[buttonDown addTarget:self action:@selector(quantityDown:) forControlEvents:UIControlEventTouchUpInside];
</code></pre>

From <code>btn.tag</code> you can get the row number. Hope this helps. :)

blocks|key|714176|text|为什么不创建一个Custom+UIButton+class并将对象作为属性呢？|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|714177|见下文。|714178|"MyButton.h"|BOLD|714179|@interface+MyButton+:+UIButton
@property(nonatomic,+strong)MyClass+*obj;
@end|code-block|syntax|javascript|714180|"MyButton.m"|714181|#import+"MyButton.h"

@implementation+MyButton

-+(id)initWithFrame:(CGRect)frame
{
++++self+=+[super+initWithFrame:frame];
++++if+(self)+{
++++++++//+Initialization+code
++++}
++++return+self;
}

@end|714182|现在将MyButton+class分配给单元格中的实际按钮，或者初始化自定义按钮而不是普通的UIButton+class并直接分配对象。|714183|在sender=MyButton所在的IBAction中|714184|-+(void)+quantityDown:(id)sender{
+++MyButton+*btn++=+(MyButton+*)sender;
+++//You+get+the+object+directly
+++btn.obj;
}|714185|通过这种方式，您实际上可以轻松地访问任意多个属性。它在其他实现中也很有用。|714186|希望能有所帮助。|714187|entityMap^0|8|L|0|0|0|C|0|0|0|C|0|0|3|E|1A|E|0|1|F|J|8|0|0|0|0^^$0|@$1|2|3|4|5|6|7|15|8|@$9|16|A|17|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|18|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|19|8|@$9|1A|A|1B|B|J]]|D|@]|E|$]]|$1|K|3|L|5|M|7|1C|8|@]|D|@]|E|$N|O]]|$1|P|3|Q|5|6|7|1D|8|@$9|1E|A|1F|B|J]]|D|@]|E|$]]|$1|R|3|S|5|M|7|1G|8|@]|D|@]|E|$N|O]]|$1|T|3|U|5|6|7|1H|8|@$9|1I|A|1J|B|C]|$9|1K|A|1L|B|C]]|D|@]|E|$]]|$1|V|3|W|5|6|7|1M|8|@$9|1N|A|1O|B|C]|$9|1P|A|1Q|B|C]]|D|@]|E|$]]|$1|X|3|Y|5|M|7|1R|8|@]|D|@]|E|$N|O]]|$1|Z|3|10|5|6|7|1S|8|@]|D|@]|E|$]]|$1|11|3|12|5|6|7|1T|8|@]|D|@]|E|$]]|$1|13|3|-4|5|6|7|1U|8|@]|D|@]|E|$]]]|14|$]]

Why don't you make a <code>Custom UIButton class</code> and have the object as property?

See below.

"MyButton.h"

<pre><code>@interface MyButton : UIButton
@property(nonatomic, strong)MyClass *obj;
@end
</code></pre>

"MyButton.m"

<pre><code>#import "MyButton.h"

@implementation MyButton

- (id)initWithFrame:(CGRect)frame
{
 self = [super initWithFrame:frame];
 if (self) {
 // Initialization code
 }
 return self;
}

@end
</code></pre>

Now assign <code>MyButton class</code> to your actual button in the cell/ or initialize the custom button instead of normal <code>UIButton class</code> and assign the object directly.

And in your <code>IBAction</code> where <code>sender=MyButton</code>

<pre><code>- (void) quantityDown:(id)sender{
 MyButton *btn = (MyButton *)sender;
 //You get the object directly
 btn.obj;
}
</code></pre>

Doing it this way you can actually access as many properties you want easily. And its useful in other implementations too.

Hope it helps.

blocks|key|711898|text|按钮只能携带一个输入，因此请保持发送者和rowNum相同，以便可以在行方法的单元格中轻松处理。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|711899|UIButton+*b+=+[UIButton+buttonWithType:UIButtonTypeContactAdd];
b.tag+=+indexPath.row;
[b+addTarget:self+action:@selector(quantityDown:)+forControlEvents:UIControlEventTouchUpInside];|code-block|syntax|javascript|711900|你的方法|711901|+-+(void)quantityDown:(id)sender++
++++{++++
+++++++NSLog(@"%25d",+sender.tag);++
++++}|711902|希望这能有所帮助..。|711903|entityMap^0|K|6|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|Y|8|@]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|R|$]]

Button can carry only one input so keep your sender and <code>rowNum</code> same so that it can be handled easily
In cell for row method.

<pre><code>UIButton *b = [UIButton buttonWithType:UIButtonTypeContactAdd];
b.tag = indexPath.row;
[b addTarget:self action:@selector(quantityDown:) forControlEvents:UIControlEventTouchUpInside];
</code></pre>

Your method

<pre><code> - (void)quantityDown:(id)sender 
 { 
 NSLog(@"%d", sender.tag); 
 }
</code></pre>

hope this will help...

I'm adding a button to a UITableViewCell programmatically. The method to be run when the button is pressed is <code>- (void) quantityDown:(id)sender rowNumber:(int)rowNum</code>, where <code>rowNum</code> is the row that the button appears in.

When adding the target to the button, Xcode autocompletes the following:

<pre><code>[buttonDown addTarget:self action:@selector(quantityDown:rowNumber:) forControlEvents:UIControlEventTouchUpInside];
</code></pre>

But no matter what I try, I cannot pass the row number into the method. I assumed the pertinent portion of code would look like

<pre><code>action:@selector(quantityDown:rowNumber:indexPath.row)
</code></pre>

but that doesn't do the trick. I've seen other stuff like

<pre><code>action:@selector(quantityDown:)rowNumber:indexPath.row
</code></pre>

and

<pre><code>action:@selector(quantityDown:rowNumber:)withObject:@"first" withObject:@"Second"
</code></pre>

But neither work. I don't need to pass a first argument, just the row number. I've also tried defining the method like <code>- (void) quantityDown:(int)rowNum</code> and then writing the selector like:

<pre><code>action:@selector(quantityDown:indexPath.row)
</code></pre>

but that also doesn't work.

Thoughts?

Thanks in advance.

iOS - passing arguments in action:@selector()

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在以编程方式向UITableViewCell添加一个按钮。按下按钮时要运行的方法是- (void) quantityDown:(id)sender rowNumber:(int)rowNum，其中rowNum是按钮所在的行。将目标添加到按钮时，Xcode会自动完成以下操作：[buttonDown addTarget...

问操作中的选择器传递参数：@ iOS ()
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