Question

如何在我的代码中更改此号码“63”？

-(void)up
{


    [UIView animateWithDuration:[self randomFloatBetween:1.0 and:0.3] animations:^{
        m1.center = CGPointMake(63, 210);
    }];


   [self performSelector:@selector(down) withObject:nil afterDelay:[self randomFloatBetween:1.0 and:0.5]];
 }

我的CGPointMake中的63号应该是随机的。所以对于数字63，我需要随机这些数字：160＆amp; 257.

我的“m1”图像出现在CGPointMake（63,210），但我想让Point 63随机，从63变为160或257. RANDOM。深受欢迎。

Answer 1

将所需的数字添加到NSArray，然后使用[yourArray objectAtIndex:(arc4random()%yourArray.count)];

选择数字

Answer 2

-(void)up
{
    NSArray *myArray = [NSArray arrayWithObjects:[NSNumber numberWithFloat:63],[NSNumber numberWithFloat:160],[NSNumber numberWithFloat:257], nil];
    [UIView animateWithDuration:[self randomFloatBetween:1.0 and:0.3] animations:^{
        m1.center = CGPointMake([[myArray objectAtIndex:arc4random() % [myArray count]] floatValue], 210);
    }];
    [self performSelector:@selector(down) withObject:nil afterDelay:[self randomFloatBetween:1.0 and:0.5]];
}

也许这会有所帮助。

随机CGPointMake的uiimageview

2 个答案: