如何以編程方式對齊iOS應用程序中的按鈕？

Question

我怎麼就能對齊正常的UIButton如。以編程方式在頂部，底部或中間？

Answer 1

可以設置按鈕的中心將其置於相應

yourButton.center = CGPointMake(0.0, 0.0);// for topleft 

yourButton.center = CGPointMake(160.0, 240.0);// for center 

yourButton.center = CGPointMake(320.0, 480.0);// for bottomright 

希望這會有幫助

Answer 2

您應該設置它的框架。

喜歡的東西

UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(320, 120, 35, 10)]; 

或

button.frame = CGRectMake(320, 120, 35, 10); 

請注意，第一對值分別是視圖和第二的寬度和高度（位置在X和Y）值的一對是按鈕本身的寬度和高度。

所以，如果你想在頂部的按鈕，你應該輸入

button.frame = CGRectMake(0, 0, 35, 10); 

中東

button.frame = CGRectMake(160, 240, 35, 10); 

底部

button.frame = CGRectMake(320, 480, 35, 10); 

Answer 3

設置子視圖的位置的唯一途徑是手動的。您可以設置框架，這樣，例如：

或改變原產地，像這樣的，例如：

view.frame.origin.x = INT_VALUE;

獲得某種比對的唯一途徑是與self.view.frame做數學。如果你想與屏幕的中間水平對齊對象，請使用：如果要對齊東西頂用的44個像素的邊距

view.frame.origin.x = self.view.frame.size.width/2

，使用此：

view.frame.origin.y = self.view.frame.origin.y = (view.frame.size.height/2) + 44;

等等

Answer 4

你必須設置UIButton構架你的自我。

平鋪對齊

float X_Co = (self.view.frame.size.width - yourButtonWidth)/2; 
[button setFrame:CGRectMake(X_Co, yourYposition, yourButtonWidth, yourButtonheight)]; 

垂直對齊

float Y_Co = (self.view.frame.size.height - yourButtonheight)/2; 
[button setFrame:CGRectMake(yourXposition, Y_Co, yourButtonWidth, yourButtonheight)]; 

左上

[button setFrame:CGRectMake(0.0, 0.0, yourButtonWidth, yourButtonheight)]; 

右上方

float X_Co = self.view.frame.size.width - yourButtonWidth; 
[button setFrame:CGRectMake(X_Co, 0.0, yourButtonWidth, yourButtonheight)]; 

左下角

float Y_Co = self.view.frame.size.height - yourButtonheight; 
[button setFrame:CGRectMake(0.0, Y_Co, yourButtonWidth, yourButtonheight)]; 

右下角

float X_Co = self.view.frame.size.width - yourButtonWidth; 
float Y_Co = self.view.frame.size.height - yourButtonheight; 
[button setFrame:CGRectMake(X_Co, Y_Co, yourButtonWidth, yourButtonheight)]; 

中心self.view中

button.center = self.view.center; 
OR 
float X_Co = (self.view.frame.size.width - yourButtonWidth)/2; 
float Y_Co = (self.view.frame.size.height - yourButtonheight)/2; 
[button setFrame:CGRectMake(X_Co, Y_Co, yourButtonWidth, yourButtonheight)]; 

Answer 5

@TheTiger的偉大提示！ 我把這個邏輯在迅速類：

https://github.com/iurims/iSLibs/blob/master/ISPositionCalculator.swift