UIButton按比例縮放嗎？

Question

有人能告訴我如何按比例縮放UIButton？按鈕應按比例放大10％。

在此先感謝！

Answer 1

呼叫

button.transform = CGAffineTransformMakeScale(1.1,1.1); 

在按下按鈕的處理程序。

或者，如果你想與動畫縮放：

[UIView beginAnimations:@"ScaleButton" context:NULL]; 
[UIView setAnimationDuration: 0.5f]; 
button.transform = CGAffineTransformMakeScale(1.1,1.1); 
[UIView commitAnimations]; 

Answer 2

要完成答案，按鈕縮放（和復位）可以被放置到方法，像這樣：

// Scale up on button press 
- (void) buttonPress:(UIButton*)button { 
    button.transform = CGAffineTransformMakeScale(1.1, 1.1); 
    // Do something else 
} 

// Scale down on button release 
- (void) buttonRelease:(UIButton*)button { 
    button.transform = CGAffineTransformMakeScale(1.0, 1.0); 
    // Do something else 
} 

並與連接按鈕的事件，像這樣：

[btn addTarget:self action:@selector(buttonPress:) forControlEvents:UIControlEventTouchDown]; 
[btn addTarget:self action:@selector(buttonRelease:) forControlEvents:UIControlEventTouchUpInside]; 
[btn addTarget:self action:@selector(buttonRelease:) forControlEvents:UIControlEventTouchUpOutside]; 

注1：將CGAffineTransformMakeScale值設置爲1.0不會使它們保持其更改的值（即，它不會將1.1乘以1.0），而是將其設置回對象的原始比例。

注意2：不要忘記選擇器中的冒號:，因爲它允許將發送者作爲參數傳遞給接收方法。在這種情況下，我們的方法接收一個UIButton，並將在接口（.h文件）中聲明。

Answer 3

這是我用

-(IBAction)heartButtonTapped:(UIButton*)sender { 
    [sender setSelected:!sender.isSelected]; 


    [UIView animateWithDuration:0.6 delay:0.0 options:UIViewAnimationOptionAutoreverse animations:^{ 
     sender.transform = CGAffineTransformMakeScale(1.5,1.5); 
    } completion:^(BOOL finished) { 
     sender.transform = CGAffineTransformMakeScale(1,1); 
    }]; 
} 

Answer 4

從@ ibm123的稍加修改代碼，避免突然調整大小的問題。

- (IBAction) buttonTapAction:(UIButton *) sender { 
[self animatePressedDown:sender duration:0.6 zoom:1.5]; 

}

- (void)animatePressedDown:(UIButton *) sender duration:(double) t zoom:(double) zoomX { 
[UIView animateWithDuration:t delay:0.0 options:UIViewAnimationOptionCurveEaseOut animations:^{ 
    sender.transform = CGAffineTransformMakeScale(zoomX,zoomX); 
} completion:^(BOOL finished) { 
    [UIView animateWithDuration:t delay:0.0 options:UIViewAnimationOptionCurveEaseOut animations:^{ 
     sender.transform = CGAffineTransformMakeScale(1,1); 
    } completion:nil]; 
}]; 

}

Answer 5

斯威夫特：

button.transform = CGAffineTransform.init(scaleX: 1.0, y: 1.0)