实现iphone彩色手电筒的代码

这篇文章主要为大家详细介绍了实现iphone彩色手电筒，文中示例代码介绍的非常详细，零基础也能参考此文章，感兴趣的小伙伴们可以参考一下。

原理很简单，通过静态变量，计数点击次数，然后改变背景颜色。

static int g_num_touch = 0;

-(IBAction)changeBackground{

g_num_touch++;

UIColor *color;

switch(g_num_touch%10){

case 0:

color = [UIColor whiteColor];

break;

case 1:

color = [UIColor blueColor];

break;

case 2:

color = [UIColor greenColor];

break;

case 3:

color = [UIColor blackColor];

break;

case 4:

color = [UIColor orangeColor];

break;

case 5:

color = [UIColor brownColor];

break;

case 6:

color = [UIColor cyanColor];

break;

case 7:

color = [UIColor redColor];

break;

case 8:

color = [UIColor magentaColor];

break;

case 9:

color = [UIColor yellowColor];

break;

default:

color = [UIColor whiteColor];

break;

}

self.view.backgroundColor = color;

}