随笔写了一个简单实现别踩白块的小demo，具体实现思路如下：创建一个6行4列的button界面，每行采用随机数随机一个button，设置此button的背景颜色为黑色，其他button背景均为黑色。当点击白色button后，弹框显示点击错误，界面重新归0，当点击黑色button后，上一行的黑色button的背景颜色延续到下一行，然后第一行随机一个button的颜色为黑色，其余为白色。实现如下：
1. 创建button按钮
- (void)setupButton
{
for (int i = 0; i<6; i++) {
NSInteger black =kScreenRandom;
for (int j = 0; j<4; j++) {
self.button = [UIButton buttonWithType:(UIButtonTypeCustom)];
_button.frame = CGRectMake(kScreenWidth/4*j, kScreeHeight/6*i, kScreenWidth/4, kScreeHeight/6);
_button.layer.borderWidth = 1;
[_button setBackgroundColor:[UIColor whiteColor]];
_button.layer.borderColor= [[UIColor blackColor]CGColor];
_button.tag = 4*i+j+1;
[self.view addSubview:_button];
if (j==black) {
[_button setBackgroundColor:[UIColor blackColor]];
}
[_button addTarget:self action:@selector(buttonAction:) forControlEvents:(UIControlEventTouchUpInside)];
}
}
}
// button 点击事件
- (void)buttonAction:(UIButton *)button
{
if ([button.backgroundColor isEqual:[UIColor blackColor]]) {
for ( int i = 24; i>=5; i--) {
UIButton *button1 = [self.view viewWithTag:i];
UIButton *button2 = [self.view viewWithTag:i-4];
// 将上一排button的颜色传递给下一排
button1.backgroundColor = button2.backgroundColor;
}
}else{
[self whiteAction];
}
// 随机将第一排的某一个button设置为黑色
int a =kScreenRandom+1;
for ( int i =1 ; i<5; i++) {
if(i==a)
{
[[self.view viewWithTag:i] setBackgroundColor:[UIColor blackColor]];
}
else
{
[[self.view viewWithTag:i] setBackgroundColor:[UIColor whiteColor]];
}
}
_count++;
}
2.弹出框
- (void)whiteAction
{
NSString *string = [NSString stringWithFormat:@"得分:%ld",_count];
UIAlertController *alert = [UIAlertController alertControllerWithTitle:string message:@"闯关失败" preferredStyle:(UIAlertControllerStyleAlert)];
UIAlertAction *action = [UIAlertAction actionWithTitle:@"重新开始" style:(UIAlertActionStyleCancel) handler:^(UIAlertAction * _Nonnull action) {
// 重新开始
[self setupButtonRestart];
}];
[alert addAction:action];
[self presentViewController:alert animated:YES completion:nil];
_count=0;
}
3.重新开始
- (void)setupButtonRestart
{
for (int i = 0; i<24; i++) {
[self.view viewWithTag:i+1].backgroundColor = [UIColor whiteColor];
}
for (int j = 0; j<6; j++) {
NSInteger a = arc4random()%3;
//通过tag找到对应button,设置背景颜色
[self.view viewWithTag:4*j+a+1].backgroundColor = [UIColor blackColor];
}
}
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