如何更改按钮状态更改时UIButton的图像？

我需要将UIButton图像更改为点击下的“选定”或“突出显示”状态的图像（而不是点击结束时）。如何更改按钮状态更改时UIButton的图像？

此外，我需要更改按钮的状态自来水“选择”与代码：

- (IBAction)convertDown:(id)sender { 
    [buttonConvert setSelected:TRUE]; 
}

但有了这个代码，我看到了“正常”状态的图像，直至水龙头结束:(

如何解决这个

来源

2014-01-05 Dmitry

这是Interface Builder的问题不能那段时间，直到自来水年底设定的图像可以通过下面的代码是固定的：。

- (void)viewDidLoad { 
    [super viewDidLoad]; 
    [buttonConvert setBackgroundImage:[UIImage imageNamed:@"iphone_button_highlighted.png"] 
     forState:UIControlStateSelected | UIControlStateHighlighted]; 
}

个

来源

2014-01-05 18:00:50 Dmitry

也可以在Interface Builder中做到这一点。这与我所说的一样。 – matt

没有UIControlStateSelected | UIControlStateHighlighted'状态。 – Dmitry

好的，我收回！我只是想退后一步，让这种事情自行解决。 – matt

指定为您的按钮不同势目标ControlEvents

有许多ControlEvents可供选择：

UIControlEventTouchDown   = 1 << 0, 
    UIControlEventTouchDownRepeat  = 1 << 1, 
    UIControlEventTouchDragInside  = 1 << 2, 
    UIControlEventTouchDragOutside = 1 << 3, 
    UIControlEventTouchDragEnter  = 1 << 4, 
    UIControlEventTouchDragExit  = 1 << 5, 
    UIControlEventTouchUpInside  = 1 << 6, 
    UIControlEventTouchUpOutside  = 1 << 7, 
    UIControlEventTouchCancel   = 1 << 8, 

    UIControlEventValueChanged  = 1 << 12, 

    UIControlEventEditingDidBegin  = 1 << 16, 
    UIControlEventEditingChanged  = 1 << 17, 
    UIControlEventEditingDidEnd  = 1 << 18, 
    UIControlEventEditingDidEndOnExit = 1 << 19, 

    UIControlEventAllTouchEvents  = 0x00000FFF, 
    UIControlEventAllEditingEvents = 0x000F0000, 
    UIControlEventApplicationReserved = 0x0F000000, 
    UIControlEventSystemReserved  = 0xF0000000, 
    UIControlEventAllEvents   = 0xFFFFFFFF

例：

[yourButton addTarget:self 
      action:@selector(methodTouchUpInside:) 
forControlEvents: UIControlEventTouchUpInside]; 

- (void)methodTouchDown:(id)sender{ 

    NSLog(@"TouchDown"); 
}

或添加gustures，而不是分配目标ControlEvents

UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTap:)]; 
[yourButton addGestureRecognizer: tapGesture]; 

- (void) handleTap:(UITapGestureRecognizer *)sender 
{ 
    if(sender.state == UIGestureRecognizerStateBegan) 
    { 
    NSLog(@"UIGestureRecognizerStateBegan"); 
    } 
    else if(sender.state == UIGestureRecognizerStateEnded) 
    { 
    NSLog(@"UIGestureRecognizerStateEnded"); 
    } 
}

有很多UIGestureRecognizerState可用。

UIGestureRecognizerStatePossible, 
    UIGestureRecognizerStateBegan, 
    UIGestureRecognizerStateChanged, 
    UIGestureRecognizerStateEnded, 
    UIGestureRecognizerStateCancelled, 
    UIGestureRecognizerStateFailed, 
    UIGestureRecognizerStateRecognized

来源

2014-01-05 19:32:30

如何更改按钮状态更改时UIButton的图像？

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