我是Objective-C的新手。我创建了一个向上移动3个按钮的动画。这些按钮包含图像。但是,当此按钮动画发生时,它会调整按钮图像的大小并使其变大。我试图纠正下面的代码来调整按钮图像的大小,但我仍然得到巨大的按钮。有人可以帮帮我吗?它应该是宽度:78高度:76。我尝试更换宽度和高度,但它仍然无法正常工作。注意:只需更正代码,我不需要完全不同的答案。
-(IBAction)Search:(id)sender {
CGFloat screenWidth = self.view.bounds.size.width;
CGFloat screenHeight = self.view.bounds.size.height;
CGFloat normalizedX = (124 / 320); // You calculate these 'normalized' numbers, possibly from a designer's spec.
// it's the percent the amount should be over, as number from 0-1.
// This number is based on screen width of 320 having x 124 pt.
CGFloat startingX = normalizedX * screenWidth;
CGFloat startingY = (475 / 200) * screenHeight;
CGFloat width = (42 / 40) * screenWidth;
CGFloat height = (30 / 30) * screenHeight;
CGRect startingRect = CGRectMake(startingX, startingY, width, height);
self.button.frame = startingRect;
self.buttonTwo.frame = startingRect;
self.buttonThree.frame = startingRect;
// animate
[UIView animateWithDuration:0.75 animations:^{
CGFloat firstX = (13 / 770) * screenWidth;
CGFloat lowerY = (403 / 370) * screenHeight;
self.button.frame = CGRectMake(firstX, lowerY, width, height);
CGFloat secondX = (124 / 424) * screenWidth;
CGFloat upperY = (347 / 447) * screenHeight;
self.buttonTwo.frame = CGRectMake(secondX, upperY, width, height);
CGFloat thirdX = (232 / 680) * screenWidth;
self.buttonThree.frame = CGRectMake(thirdX, lowerY, width, height);
}];
}
答案 0 :(得分:2)
在我看来,你的高度和宽度数学是错误的。
(42/40)* screenWidth将简化为(1)* screenWidth,或屏幕的整个宽度(表达式42/40
将使用整数数学运算,结果为1.0。如果使用浮点数,你会得到1.05 * screenWidth,这会使图像更大。)
您的身高计算存在类似问题。您将按钮设置为屏幕的整个高度,稍微宽一些。