UIControlStateNormal的Addtarget不起作用

Question

我創建了一個名為SectionButton的自定義UIButton。

該按鈕有2張圖像，一張用於“正常狀態”，另一張用於“選定和突出顯示”狀態。

該按鈕還具有文本，並且當按下按鈕時，必須調整TitleEdgesInset。

在init方法中，添加以下方法：

[self addTarget:self action: @selector(buttonHighlighted:) forControlEvents: UIControlStateHighlighted];
[self addTarget:self action:@selector(buttonNormal:) forControlEvents:UIControlStateNormal];

但是永遠不會調用方法'buttonNormal：'，因此我無法調整titleEdgeInsets屬性。

#import "SectionButton.h"

@implementation SectionButton

- (id)initWithFrame: (CGRect)frame andTitle: (NSString*)title andbaseImageName:(NSString*)imageBaseName
{
if (self = [super initWithFrame: frame])
{
    // Create images for button
    UIImage* normalImage = [UIImage imageNamed: imageBaseName ];
    UIImage* downImage = [UIImage imageNamed:[NSString stringWithFormat:@"%@_selected",imageBaseName]];
    // Set up button
    [self setTitle: [title uppercaseString] forState: UIControlStateNormal];    // Will be used for all states
    [self setTitleColor: [UIColor whiteColor] forState: UIControlStateNormal];
    [self.titleLabel setFont:[UIFont fontWithName:@"Helvetica" size:12.0]];

    [self setBackgroundImage: normalImage forState: UIControlStateNormal];
    [self setBackgroundImage: downImage forState: UIControlStateHighlighted];
    [self setContentEdgeInsets:UIEdgeInsetsMake(54, 0, 0, 0)];

    [self addTarget: self action: @selector(buttonHighlighted:) forControlEvents: UIControlStateHighlighted];
    [self addTarget:self action:@selector(buttonNormal:) forControlEvents:UIControlStateNormal];

}
return self;
}

- (void)buttonHighlighted: (id)sender
{
[self setTitleEdgeInsets:UIEdgeInsetsMake(0,0,-16,0)];
NSLog(@"button selected");
}

- (void) buttonNormal: (id)sender {
[self setTitleEdgeInsets:UIEdgeInsetsMake(0,0,0,0)];
NSLog(@"Button normal");
}    

}
@end

Answer 1

您正在傳遞控制狀態來代替ControlEvent，

[self addTarget:self action: @selector(buttonHighlighted:) forControlEvents: UIControlEventTouchDownInside];
[self addTarget:self action:@selector(buttonNormal:) forControlEvents:UIControlEventTouchUpInside];

Answer 2

您只需要對該按鈕調用1個方法。

在這種方法中，您需要根據按鈕的當前狀態執行代碼。