中国象棋（OC）

中国象棋（OC）

“`

import “MainViewController.h”

@interface MainViewController ()

@property(assign)BOOL xbool;
@property(assign)NSString * str;
@property(assign)UIButton * button;
@property(assign)NSInteger width;
@property(assign)NSInteger heigth;

@end

@implementation MainViewController

• (void)viewDidLoad {
  [super viewDidLoad];
  [self.view setBackgroundColor:[UIColor whiteColor]];
  _width=[UIScreen mainScreen].bounds.size.width;
  _heigth=[UIScreen mainScreen].bounds.size.height-20;

  NSArray * arr=@[@”车”,@”马”,@”象”,@”王”,@”后”,@”象”,@”马”,@”车”];
  for (int i=0; i<8; i++) {
  for (int j=0; j<8; j++) {
  UIButton * btn=[[UIButton alloc]init];
  btn.font=[UIFont systemFontOfSize:20];
  [btn setFrame:CGRectMake(_width/8*j, _heigth/8*i+20, _width/8, _heigth/8)];

      if ((i+j)%2==0) {
          [btn setBackgroundColor:[UIColor whiteColor]];
      }
      else
      {
          [btn setBackgroundColor:[UIColor blackColor]];
  
      }
      if (i==0) {
          [btn setTitle:arr[j] forState:UIControlStateNormal];
          [btn setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
  
      }
      if (i==1) {
          [btn setTitle:@"兵" forState:UIControlStateNormal];
          [btn setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
  
      }
      if (i==7) {
          [btn setTitle:arr[7-j] forState:UIControlStateNormal];
          [btn setTitleColor:[UIColor greenColor] forState:UIControlStateNormal];
  
      }
      if (i==6) {
          [btn setTitle:@"兵" forState:UIControlStateNormal];
          [btn setTitleColor:[UIColor greenColor] forState:UIControlStateNormal];
  
      }
      [btn addTarget:self action:@selector(btnAction:) forControlEvents:UIControlEventTouchUpInside];
  
      [self.view addSubview:btn];
  
  }
  

  }
  }
  -(void)btnAction:(UIButton*)sender
  {
  if (_xbool) {
  [sender setTitle:_str forState:UIControlStateNormal];
  [sender setTitleColor:_button.currentTitleColor forState:UIControlStateNormal];
  _xbool=NO;
  }
  else{
  if (sender.currentTitle==NULL) {
  return;
  }
  _str=sender.currentTitle;
  _button=sender;
  [sender setTitle:NULL forState:UIControlStateNormal];
  _xbool=YES;
  }
  }

• (void)didReceiveMemoryWarning {
  [super didReceiveMemoryWarning];
  // Dispose of any resources that can be recreated.
  }

“`