如何在iOS中为键盘绘制许多按钮

Question

我想为键盘画出26个按钮。共有3行。第一行有10个按钮，第二行有9个，第三个有7个。从一个按钮到另一个按钮的空间是5.每个按钮的宽度为：27和高度：40。如何同时绘制它们？

Answer 1

你可以像这样按钮： - 它不是你问题的解决方案但是......你仍然会从那个代码中得到这个想法.-

    objDelegate.redColorArray = [[NSMutableArray alloc] initWithObjects:@"255",@"215",@"242",@"198",@"204",@"119",@"217",@"149",@"112",@"79",@"247",@"55",@"0",@"0",@"255",@"16", nil];
    objDelegate.greenColorArray = [[NSMutableArray alloc] initWithObjects:@"255",@"228",@"220",@"217",@"193",@"147",@"150",@"179",@"48",@"98",@"150",@"96",@"0",@"176",@"0",@"37", nil];
    objDelegate.blueColorArray = [[NSMutableArray alloc] initWithObjects:@"255",@"189",@"219",@"241",@"218",@"60",@"148",@"215",@"160",@"40",@"70",@"146",@"0",@"80",@"0",@"63", nil];

    UIButton *btn[16];

    buttonArray = [[NSMutableArray alloc] init];

    int x=0;
    int y=0;
   for (int i=0; i<16; i++)
    {
        btn[i] = [[UIButton alloc] initWithFrame:CGRectMake(x, y, 15, 15)];

        [btn[i] setBackgroundColor:[UIColor colorWithRed:[[objDelegate.redColorArray objectAtIndex:i]floatValue]/255.0 green:[[objDelegate.greenColorArray objectAtIndex:i]floatValue]/255.0 blue:[[objDelegate.blueColorArray objectAtIndex:i]floatValue]/255.0 alpha:1]];

        btn[i].tag = i;

        [btn[i] addTarget:self action:@selector(setColor:) forControlEvents:UIControlEventTouchUpInside];

        [buttonArray addObject:btn[i]];

        [self addSubview:btn[i]];

        x+=20;

        if((i+1)%4==0)
        {
            x=0;
            y+=20;
       }
    }

它会显示这样的按钮