CGFloat width = 40;CGFloat height = 40;//獲取屏幕寬高//獲取屏幕對象UIScreen *screen = [UIScreen mainScreen];//獲取屏幕大小CGRect screenFrame = [screen bounds];//單獨取出屏幕的寬高
//    CGFloat screenWidth = screenFrame.size.width;CGFloat screenWidth = CGRectGetWidth(screenFrame);//    CGFloat screenHeight = screenFrame.size.height;CGFloat screenHeight = CGRectGetHeight(screenFrame);
//          x軸              y軸
//    CGRectGetMinX  +   CGRectGetMinY   =   view的左上角坐標
//    CGRectGetMidX  +   CGRectGetMidY   =   view的中心坐標
//    CGRectGetMaxX  +   CGRectGetMaxY   =   view的右上角坐標
//    CGRectGetWidth +   CGRectGetHeight =   view的大小/*
(minx/y)  (midx/0) (maxx,y)+-----.-----+|           |.     .     .   (midx, midy)|           |+-----.-----+*///計算每一列的個數CGFloat col = screenWidth / width;//計算每一行的個數CGFloat row = screenHeight / height;for (NSInteger i = 0; i < row; ++i){for (NSInteger j = 0; j < col; ++j){UIView *v = [[UIView alloc] init];//設置第i行，第j列個view的大小v.frame = CGRectMake(j * width, i * height, width, height);//CGRectGetMidX(v.frame);//(v.frame.origin.x + v.frame.size.width) / 2;//CGRectGetMidY(v.frame);//(v.frame.origin.y + v.frame.size.height) / 2;//設置顏色v.backgroundColor = [UIColor colorWithRed:arc4random() % 256 / 255.0 green:arc4random() % 256 / 255.0 blue:arc4random() % 256 / 255.0 alpha:1];//放到窗口顯示
            [self.window addSubview:v];}}

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轉載于:https://www.cnblogs.com/wlsky/p/4496106.html

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