UIAlertController

- (void)tapSalePrice {

    // 修改銷售金額

    UIAlertController *alertCtrl = [UIAlertController alertControllerWithTitle:@"修改銷售價格" message:nil preferredStyle:UIAlertControllerStyleAlert];

    [alertCtrl addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull textField) {

        textField.placeholder = @"請輸入銷售價格";

        textField.textColor = [UIColor blueColor];

        textField.clearButtonMode = UITextFieldViewModeWhileEditing;

        textField.borderStyle = UITextBorderStyleNone;

        textField.layer.borderColor = [UIColor whiteColor].CGColor;

        

    }];

    [alertCtrl addAction:[UIAlertAction actionWithTitle:@"肯定" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {

        NSArray * textfields = alertCtrl.textFields;

        UITextField *textf = textfields[0];

        _editSalePri  = textf.text;

        NSLog(@"%@", _editSalePri);

        if (_editSalePri || _editSaleAmout) {

            [self updateSalesData];

        }

        

    }]];

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

}