xcode 如何在目标 c 中移动图像
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how to move an image in objective c
提问by Hacer sengul Akac
I want to move image to another x,y position. I try this code but not work it crash after 3 seconds. The error is: 2012-01-17 12:40:47.213 YapiKrediDemo[1986:207] -[Sozlesme moveImage:]: unrecognized selector sent to instance 0x6c316c0.
我想将图像移动到另一个 x,y 位置。我尝试使用此代码，但无法在 3 秒后崩溃。错误是：2012-01-17 12:40:47.213 YapiKrediDemo[1986:207] -[Sozlesme moveImage:]: 发送到实例 0x6c316c0 的无法识别的选择器。
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
image1=[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"GirisButton.png"]];
[NSTimer scheduledTimerWithTimeInterval: 3
target: self
selector:@selector(moveImage:)
userInfo: nil repeats:YES];
}
-(void) moveImage
{
//[image1 setCenter: CGPointMake(634, 126)];
CGPoint pointOne=CGPointMake(634, 126);
image1.center=pointOne;
}
How can I solve ?
我该如何解决？
回答by Shai Mishali
Your selector needs to be @selector(moveImage)without the colon.
moveImage:would mean a parameter is expected, while your method delceration below doesn't accept any parameters.
您的选择器需要@selector(moveImage)没有冒号。
moveImage:将意味着需要一个参数，而下面的方法 delceration 不接受任何参数。
You could also just change the frame.
你也可以只改变框架。
CGRect myFrame = image1.frame;
myFrame.origin.x = 634;
myFrame.origin.y = 126;
image1.frame = myFrame;
回答by V1ru8
The selector is @selector(moveImage). No :at the end. Or you have to add a parameter to the moveImage method. That's what you should do. - (void)moveImage:(NSTimer*)timer
选择器是@selector(moveImage)。最后没有:。或者您必须向 moveImage 方法添加一个参数。这就是你应该做的。- (void)moveImage:(NSTimer*)timer
