以编程方式将按钮添加到UIToolBar

Question

我添加了一个工具栏，然后以编程方式向其添加3个按钮。然而，3个按钮都混乱到一个角落。我想要做的是在3个按钮之间留出空间，以便UI看起来很体面。

我该怎么做？

UIButton *button = [UIButton buttonWithType:100]; 

[button addTarget:self action:@selector(hideGender:) forControlEvents:UIControlEventTouchUpInside]; 

[button setImage:[UIImage imageNamed:@"img"] forState:UIControlStateNormal]; 

[button setTitle:@"Images" forState:UIControlStateNormal]; 

button.imageEdgeInsets= UIEdgeInsetsMake(0.0, 0.0, 0, 50); 

button.tag=0; 





UIButton *button2 = [UIButton buttonWithType:100]; 

[button2 addTarget:self action:@selector(hideSchool:) forControlEvents:UIControlEventTouchUpInside]; 

button2.tag=2; 

button2.imageEdgeInsets= UIEdgeInsetsMake(0.0, 0.0, 0, 50); 

[button2 setImage:[UIImage imageNamed:@"img22"] forState:UIControlStateNormal]; 



UIButton *button3 = [UIButton buttonWithType:100]; 

[button3 addTarget:self action:@selector(hideCar:) forControlEvents:UIControlEventTouchUpInside]; 

button.tag=3; 

button3.imageEdgeInsets= UIEdgeInsetsMake(0.0, 0.0, 0,50); 

[button3 setImage:[UIImage imageNamed:@"img3"] forState:UIControlStateNormal]; 



UIBarButtonItem *barButtonItem0 = [[UIBarButtonItem alloc] initWithCustomView:button] ; 

UIBarButtonItem *barButtonItem2 = [[UIBarButtonItem alloc] initWithCustomView:button2] ; 

UIBarButtonItem *barButtonItem3 = [[UIBarButtonItem alloc] initWithCustomView:button3] ; 

更新：我希望只使用UIButton的

Answer 1

UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom]; 
[btn setBackgroundImage:[UIImage imageNamed:@"image.png"] forState:UIControlStateNormal]; 
[btn addTarget:self action:@selector(action:) forControlEvents:UIControlEventTouchUpInside]; 
UIBarButtonItem *barBackButton = [[UIBarButtonItem alloc] initWithCustomView:btn]; 
[toolBar setItems:[NSArray arrayWithObject:barBackButton]]; 

现在setItems设定按钮的阵列。假设你想放三个按钮，那么每个按钮的宽度将是screenWidth/3，文本将居中对齐。这样，没有按键的超越。