隨機CGPoint使用uiimageview

Question

如何在代碼中更改此數字「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]]; 
} 

從我的CGPointMake 63號應該是隨機的。所以對於數字63我需要隨機這些數字：160 & 257.

我的「m1」圖像，出現在CGPointMake（63,210）或257.隨機。 Thnaks很多。

Answer 1

-(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]]; 
} 

數量也許這會有所幫助。

Answer 2

添加所需的號碼一個NSArray，並選擇[yourArray objectAtIndex:(arc4random()%yourArray.count)];