提示框

UIButton *fenxiangBtn1=[[UIButton alloc]initWithFrame:CGRectMake(310, 340, 70, 30)];

    [fenxiangBtn1 setImage:[UIImage imageNamed:@"fenxiang"] forState:UIControlStateNormal];

    [fenxiangBtn1 addTarget:self action:@selector(fenxiangA) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:fenxiangBtn1];

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-(void)songliB{

    //显示提示框

    UIAlertController *alert=[UIAlertController alertControllerWithTitle:@"送礼成功！" message:@"" preferredStyle:UIAlertControllerStyleAlert];

    UIAlertAction *action=[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {

    }];

    [alert addAction:action];

    [self presentViewController:alert animated:YES completion:nil];

}