如何在没有取消按钮的情况下制作 JavaFX 确认对话框？ [复制]答案

【问题标题】：How can i make JavaFX Confirmation dialog without cancel button? [duplicate]如何在没有取消按钮的情况下制作 JavaFX 确认对话框？ [复制]
【发布时间】：2019-05-22 19:01:59
【问题描述】：

我只想制作没有取消按钮的 javaFX 确认对话框。

当我刚刚制作没有取消按钮的对话框时，关闭对话框的“X”按钮不起作用。没有“取消”按钮怎么办？

Alert alert = new Alert(AlertType.CONFIRMATION);
alert.setTitle("Confirmation Dialog with Custom Actions");
alert.setHeaderText("Look, a Confirmation Dialog with Custom Actions");
alert.setContentText("Choose your option.");

ButtonType buttonTypeOne = new ButtonType("One");
ButtonType buttonTypeTwo = new ButtonType("Two");
ButtonType buttonTypeThree = new ButtonType("Three");
ButtonType buttonTypeCancel = new ButtonType("Cancel", ButtonData.CANCEL_CLOSE);

alert.getButtonTypes().setAll(buttonTypeOne, buttonTypeTwo, buttonTypeThree, buttonTypeCancel);

Optional<ButtonType> result = alert.showAndWait();
if (result.get() == buttonTypeOne){
    // ... user chose "One"
} else if (result.get() == buttonTypeTwo) {
    // ... user chose "Two"
} else if (result.get() == buttonTypeThree) {
    // ... user chose "Three"
} else {
    // ... user chose CANCEL or closed the dialog
}

在这段代码中我想删除

ButtonType buttonTypeCancel = new ButtonType("Cancel", ButtonData.CANCEL_CLOSE);

使用户可以选择“一、二、三”中的一种，没有取消按钮，但“X”按钮可以正常工作。

我就是这样尝试的。

Alert alert = new Alert(AlertType.CONFIRMATION);
alert.setTitle("Confirmation Dialog with Custom Actions");
alert.setHeaderText("Look, a Confirmation Dialog with Custom Actions");
alert.setContentText("Choose your option.");

ButtonType buttonTypeOne = new ButtonType("One");
ButtonType buttonTypeTwo = new ButtonType("Two");
ButtonType buttonTypeThree = new ButtonType("Three");


alert.getButtonTypes().setAll(buttonTypeOne, buttonTypeTwo, buttonTypeThree);

Optional<ButtonType> result = alert.showAndWait();
if (result.get() == buttonTypeOne){
    // ... user chose "One"
} else if (result.get() == buttonTypeTwo) {
    // ... user chose "Two"
} else if (result.get() == buttonTypeThree) {
    // ... user chose "Three"
} else {
    // ... user chose CANCEL or closed the dialog
}

但是当我这样做时，“X”按钮不起作用。我该如何处理？

【问题讨论】：

code.makery.ch/blog/javafx-dialogs-official

标签： javafx dialog

【解决方案1】：

我只是让按钮不可见。

Alert alert = new Alert(AlertType.CONFIRMATION);
            alert.setTitle("Confirmation Dialog with Custom Actions");
            alert.setHeaderText(null);
            alert.setContentText("Choose your option.");
            ButtonType buttonTypeOne = new ButtonType("One");
            ButtonType buttonTypeTwo = new ButtonType("Two");
            ButtonType buttonTypeThree = new ButtonType("Three");
            ButtonType buttonTypeCancel = new ButtonType("Cancel", ButtonData.CANCEL_CLOSE);

            alert.getButtonTypes().setAll(buttonTypeOne, buttonTypeTwo, buttonTypeThree, buttonTypeCancel);
            alert.getDialogPane().lookupButton(buttonTypeCancel).setVisible(false);

            Optional<ButtonType> result = alert.showAndWait();
            if (result.get() == buttonTypeOne){
                // ... user chose "One"
            } else if (result.get() == buttonTypeTwo) {
                // ... user chose "Two"
            } else if (result.get() == buttonTypeThree) {
                // ... user chose "Three"
            } else {
                // ... user chose CANCEL or closed the dialog
            }

【讨论】：