如何設置UIImageView作爲一個標題，使東西不拉伸？

Question

如果我這樣做，那麼titleView將得到拉伸：

UIImage * img =[UIImage imageNamed:@"isikota_small.png"]; 
UIImageView * uiImage= [[UIImageView alloc]initWithImage:img]; 
self.navigationItem.titleView = uiImage; 

PO(self.navigationItem.titleView); 

如果我做

UIImage * img =[UIImage imageNamed:@"isikota_small.png"]; 
UIImageView * uiImage= [[UIImageView alloc]initWithImage:img]; 
uiImage.frame = CGRectMake(0,0,66,33); 

uiImage.autoresizingMask = UIViewAutoresizingFlexibleHeight; 
//[self.navigationItem.titleView addAndResizeSubView:uiImage]; doesn't work 


self.navigationItem.titleView = uiImage; 
PO(self.navigationItem.titleView); 

標題視圖也將得到延伸。

如果我做的：

UIImage * img =[UIImage imageNamed:@"isikota_small.png"]; 
UIImageView * uiImage= [[UIImageView alloc]initWithImage:img]; 
uiImage.frame = CGRectMake(0,0,66,33); 

uiImage.autoresizingMask = UIViewAutoresizingFlexibleHeight; 
//[self.navigationItem.titleView addAndResizeSubView:uiImage]; doesn't work 
UIView * uiv = [[UIView alloc]init]; 
[uiv addSubview:uiImage]; 
uiv.frame = CGRectMake(127, 0, 66, 33); 
uiv.autoresizingMask=UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleWidth; 

self.navigationItem.titleView = uiv; 
PO(self.navigationItem.titleView); 

不知怎的，蘋果改變了uiv.frame到CGRectMake(127, 6, 66, 33)。

必須有一個優雅的解決方案。

Answer 1

當您使用自定義視圖爲titleView，以及在tableViews和其他類似用例中的分節頁腳和標題時，iOS將忽略視圖框架的偏移部分或以某種難以預測的方式更改它。爲了去解決這個問題，你需要創建一個容器視圖，以便您的容器具有偏移（0,0）：

嘗試是這樣的：

UIImage * img =[UIImage imageNamed:@"isikota_small.png"]; 
UIImageView * uiImage= [[UIImageView alloc]initWithImage:img]; 
uiImage.frame = CGRectMake(127,0,66,33); 

UIView * uiv = [[UIView alloc]init]; 
[uiv addSubview:uiImage]; 
uiv.frame = CGRectMake(0, 0, 66+127, 33); 

self.navigationItem.titleView = uiv; 

我不知道，如果自動尺寸口罩也會拋棄它，所以嘗試沒有任何掩碼，看看你是否能得到你想要的行爲。