ios - 按下 UIAlert 按钮后更改 Storyboard

Question

我想在游戏中通过 UIAlert 点击主菜单后切换到主菜单

试试这个:

    -(void)gameOver
{
    UIAlertView *alert = [[UIAlertView alloc]
                          initWithTitle:@"Time's up!"
                          message:[NSString stringWithFormat:@"You've scored: %i points!", scoreCounter]
                          delegate:self
                          cancelButtonTitle:nil
                          otherButtonTitles:@"Submit to Leaderboards",@"Play Again",@"Main Menu", nil];
    [alert show];
}
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    if (buttonIndex == 1) {
        [self toMain];
    }
    if (buttonIndex == 2) {
        [self toMain];
    }
    if (buttonIndex == 3)
    {
        [self toMain];
    }

}
-(void)toMain
{
    mainMenu *main = [[mainMenu alloc] initWithNibName:nil bundle:nil];
    [self presentViewController:main animated:YES completion:NULL];
}

什么都不做...

编辑

修复了按钮索引，现在在 [self toMain] 之后面临黑屏

Answer 1

按钮索引从 0 开始，因此对于您的 3 个按钮，buttonIndex == 3 分支无法被调用。

来源:Apple Docs on UIAlertView