Question

我有一个小的UIButton并通过以下方式设置选择状态的背景：

[button setBackgroundImage:[UIImage imageNamed:@"butBG.png"] forState:UIControlStateSelected];

butBG.png imageSize > button.frame。我希望在UIButton.frame时将[button setSelected:YES];展开为等于imageSize 之后返回原点Frame [button setSelected:NO];

我该怎么做？感谢您的帮助！

Answer 1

1）使用btn.isSelected检查按钮单击时的按钮状态。

2）如果btn.isSelected为真，则将按钮大小设置为与图像大小相似，否则设置正常状态下所需的按钮大小。

Answer 2

您可以为按钮创建一个类别，并覆盖setSelected方法以根据状态更改按钮的帧大小

Answer 3

您可以聆听按钮的状态，并在更改时调整其大小

在viewDidLoad中（或使用界面构建器执行等效操作）

[button addTarget:self action:@selector(myButtonStateChanged:) forControlEvents:UIControlEventTouchDown];

[button addTarget:self action:@selector(myButtonStateChanged:) forControlEvents:(UIControlEventTouchUpInside | UIControlEventTouchUpOutside | UIControlEventTouchCancel)];

创建方法

- (IBAction)myButtonStateChanged:(UIButton *)sender {
  if (sender.selected) {
     sender.frame = BIG_SIZE_FRAME;
  }
  else {
     sender.frame = NORMAL_SIZE_FRAME;
  }

}

Answer 4

-(void)setButtonframe:(UIButton *)button
{
    if (button.selected)
    {
        [button setFrame:largeFrame];

    }
    else
    {
        [button setFrame:smallFrame];

    }
}

呼叫 [self setButtonframe：sender]; 在按钮的操作中单击

Answer 5

为此而去......

- (IBAction)paymentBtnCliked:(id)sender {

if ([sender isSelected]) {
     // configure same object as per requirement
    [paymentBtn setSelected:NO];
}else{
     // configure same object as per requirement
     [paymentBtn setSelected:YES];

}
}

如何在选择模式下扩展UIButton框架？

5 个答案: