IOS动态字母键盘

- (UIView *)KeyboardView

{

    UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 216)];

    NSMutableArray *array = [[NSMutableArray alloc] init];

    for (int i = 0;  i < 26; i++) {

        NSString *str = [NSString stringWithFormat:@"%c",'a' + i];

        [array addObject:str];

    }

    for (int j = 0; j < 26; j++) {

        int x = arc4random() % (26-j);

       NSString *str = [array objectAtIndex:x];

        NSLog(@"%@", str);

        [array removeObject:str];

        

        

        UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];

        button.frame = CGRectMake(j%8*40, j/8*40+10, 40, 30);

        [button setTitle:str forState:UIControlStateNormal];

        button.backgroundColor = [UIColor orangeColor];

        [button addTarget:self action:@selector(TapButton:) forControlEvents:UIControlEventTouchUpInside];

        [view addSubview:button];

    }

    

    

    return view;

}