Question

您好我正在开发一个应用程序，在该应用程序中，我在屏幕上触摸图像，此时我会以这种方式执行此操作。

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *move = [[event allTouches] anyObject];
    CGPoint MovePoint = [move locationInView:self.view];
    appDelegate.FinalMovePoint=MovePoint;   

    timer =[NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(Remaing) userInfo:nil repeats:YES];

    [self showImageWithText:@"LongBlue" atPoint:appDelegate.FinalMovePoint];
    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:0.1];
    imageView.alpha = 1.0;
    [UIView commitAnimations];
}

在此处显示我的图像但是当NSTimer被调用时图像变为闪烁或隐藏我需要图像直到触摸调用的-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event方法。请建议我如何做这项工作。

Answer 1

试试这个。

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *move = [[event allTouches] anyObject];
    CGPoint MovePoint = [move locationInView:self.view];
    appDelegate.FinalMovePoint=MovePoint;   

    timer =[NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(Remaing) userInfo:nil repeats:YES];

    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:0.1];
    imageView.alpha = 1.0;
    [self showImageWithText:@"LongBlue" atPoint:appDelegate.FinalMovePoint];

    [UIView commitAnimations];
}

如何在图像上应用动画？

1 个答案: