ISO給UIImageView增加點選事件

自己做了乙個九宮格，裡面的圖示都是由多張重疊構成，然後包裝成乙個button來使用；

遇到的問題是如何給這個「button」增加點選事件？

解決思路1：網友提示在該「button」上增加乙個真正的透明button，這樣就可以順利執行點選事件了；但是本人嘗試發現，如果我調整了button的透明度後，點選是沒有效果的！可能是我操作錯誤，待再次驗證。

解決思路2：為uiimageview增加手勢

[imageview addgesturerecognizer:我們自己的手勢recognizer];

如何建立乙個手勢？看看uitapgesturerecognizer 的用法吧。

//單指單擊

uitapgesturerecognizer *singlefingerone = [[uitapgesturerecognizer alloc] initwithtarget:self
action:@selector(handlesinglefingerevent:)];
singlefingerone.numberoftouchesrequired = 1; //手指數
singlefingerone.numberoftapsrequired = 1; //tap次數
singlefingerone.delegate= self;
//單指雙擊
uitapgesturerecognizer *singlefingertwo = [[uitapgesturerecognizer alloc] initwithtarget:self
action:@selector(handlesinglefingerevent:)];
singlefingertwo.numberoftouchesrequired = 1;
singlefingertwo.numberoftapsrequired = 2;
singlefingertwo.delegate= self;
//雙指單擊
uitapgesturerecognizer *doublefingerone = [[uitapgesturerecognizer alloc] initwithtarget:self
action:@selector(handledoublefingerevent:)];
doublefingerone.numberoftouchesrequired = 2;
doublefingerone.numberoftapsrequired = 1;
doublefingerone.delegate= self;
uitapgesturerecognizer *doublefingertwo = [[uitapgesturerecognizer alloc] initwithtarget:self
action:@selector(handledoublefingerevent:)];
doublefingertwo.numberoftouchesrequired = 2;
doublefingertwo.numberoftapsrequired = 2;
doublefingertwo.delegate= self;
//如果不加下面的話，當單指雙擊時，會先呼叫單指單擊中的處理，再呼叫單指雙擊中的處理
[singlefingerone requiregesturerecognizertofail:singlefingertwo];
//同理雙指亦是如此
[doublefingerone requiregesturerecognizertofail:doublefingertwo];
[self.view addgesturerecognizer:singlefingerone];
[self.view addgesturerecognizer:singlefingertwo];
[self.view addgesturerecognizer:doublefingerone];
[self.view addgesturerecognizer:doublefingertwo];
[singlefingerone release];
[singlefingertwo release];
[doublefingerone release];
[doublefingertwo release];
處理事件的方法，**：
//處理單指事件
- (void)handlesinglefingerevent:(uitapgesturerecognizer *)sender
elseif(sender.numberoftapsrequired == 2)
} //處理雙指事件
- (void)handledoublefingerevent:(uitapgesturerecognizer *)sender
elseif(sender.numberoftapsrequired == 2)
}

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