CGRect frame;       UIButton *Btn = [[UIButton buttonWithType:UIButtonTypeCustom] retain]; //按钮的类型 [Btn setImage:[UIImage imageNamed:@“aaa.png”] forState:UIControlStateNormal];//设置按钮图片 Btn.tag = 10; frame.size.width = 59;  //设置按钮的宽度 frame.size.height = 59;   //设置按钮的高度 frame.origin.x =150;   //设置按钮的位置 frame.origin.y =260; [Btn setFrame:frame]; [Btn setBackgroundColor:[UIColor clearColor]]; [Btn addTarget:self action:@selector(btnPressed:)forControlEvents:UIControlEventTouchUpInside];   //按钮的单击事件 [self.view addSubview:Btn];      [Btn release]; -(void)btnPressed:(id)sender {
   //在这里实现按钮的单击事件 }