Objective-C:製作九宮格

標籤：

     製作簡單的九宮格：

   源碼如下：

 

 1 #import "ViewController.h" 2  3 @interface ViewController () 4  5 @end 6  7 @implementation ViewController 8  9 - (void)viewDidLoad {10     [super viewDidLoad];11 12     //建立九宮格13     NSInteger col = 3;  //每行幾列14     NSInteger total = 9;//總個數15     16     //格子的寬度、高度17     UIImage *image = [UIImage imageNamed:@"0.png"];18     CGFloat cellWidth = image.size.width;19     CGFloat cellHeight = image.size.height;20     21     CGFloat screenWidth = self.view.frame.size.width;22     23     CGFloat gapX = (screenWidth-cellWidth*col)/(col+1);//x方向的間隔24     CGFloat gapY = gapX;//y方向的間隔25     26     27     //計算行數28     NSInteger row = 0;29     30     for(int i=0; i<total; i++)31     {32         UIButton *button = [[UIButton alloc]init];33         [button setBackgroundImage:[UIImage imageNamed:[NSString stringWithFormat:@"%d.png",i]] forState:UIControlStateNormal];34         35         //計算是否需要換行36         if(i%col == 0)37         {38             row++;39         }40         CGFloat x = gapX+(cellWidth+gapX)*(i%col);41         CGFloat y = gapY+(cellHeight+gapY)*row;42         button.frame = CGRectMake(x, y, cellWidth, cellHeight);43         44         [self.view addSubview:button];45     }46 }47 48 @end

 

Objective-C:製作九宮格