JavaFX中对话框的显示实例
【摘要】 信息对话框： Alert alert = new Alert(Alert.AlertType.INFORMATION); alert.setTitle("Information Dialog"); alert.setHeaderText("Information Dialog"); alert.setContentText("Test Mess...
信息对话框：
Alert alert = new Alert(Alert.AlertType.INFORMATION);
alert.setTitle("Information Dialog");
alert.setHeaderText("Information Dialog");
alert.setContentText("Test Message");
alert.showAndWait();
警告对话框
Alert alert = new Alert(AlertType.WARNING);
alert.setTitle("Warning Dialog");
alert.setHeaderText("Warning Dialog");
alert.setContentText("Warning");
alert.showAndWait();
错误对话框
Alert alert = new Alert(AlertType.ERROR);
alert.setTitle("Error Dialog");
alert.setHeaderText("Error Dialog");
alert.setContentText("Error");
alert.showAndWait();
异常对话框
Alert alert = new Alert(AlertType.ERROR);
alert.setTitle("Exception Dialog");
alert.setHeaderText("Exception Dialog");
alert.setContentText("Exception");
Exception ex = new FileNotFoundException("Exception");
// Create expandable Exception.
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
ex.printStackTrace(pw);
String exceptionText = sw.toString();
Label label = new Label("The exception stacktrace was:");
TextArea textArea = new TextArea(exceptionText);
textArea.setEditable(false);
textArea.setWrapText(true);
textArea.setMaxWidth(Double.MAX_VALUE);
textArea.setMaxHeight(Double.MAX_VALUE);
GridPane.setVgrow(textArea, Priority.ALWAYS);
GridPane.setHgrow(textArea, Priority.ALWAYS);
GridPane expContent = new GridPane();
expContent.setMaxWidth(Double.MAX_VALUE);
expContent.add(label, 0, 0);
expContent.add(textArea, 0, 1);
// Set expandable Exception into the dialog pane.
alert.getDialogPane().setExpandableContent(expContent);
alert.showAndWait();
确认对话框
Alert alert = new Alert(AlertType.CONFIRMATION);
alert.setTitle("Confirmation Dialog");
alert.setHeaderText("Confirmation Dialog");
alert.setContentText("Are you ok?");
Optional<ButtonType> result = alert.showAndWait();
if (result.get() == ButtonType.OK) {
System.out.print("OK");
} else {
System.out.print("Cancel");
}
使用自定义按钮的确认对话框
Alert alert = new Alert(AlertType.CONFIRMATION);
alert.setTitle("Confirmation Dialog");
alert.setHeaderText("Confirmation Dialog");
alert.setContentText("Choose one:");
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) {
System.out.print("buttonTypeOne");
} else if (result.get() == buttonTypeTwo) {
System.out.print("buttonTypeTwo");
} else if (result.get() == buttonTypeThree) {
System.out.print("buttonTypeThree");
} else {
System.out.print("Cancel");
}
文字输入对话框
TextInputDialog dialog = new TextInputDialog("Name");
dialog.setTitle("Text Input Dialog");
dialog.setHeaderText("Text Input Dialog");
dialog.setContentText("Please enter your name:");
Optional<String> result = dialog.showAndWait();
result.ifPresent(name -> System.out.println("Your name: " + name));
选择对话框
List<String> choices = new ArrayList<>();
choices.add("a");
choices.add("b");
choices.add("c");
ChoiceDialog<String> dialog = new ChoiceDialog<>("b", choices);
dialog.setTitle("Choice Dialog");
dialog.setHeaderText("Choice Dialog");
dialog.setContentText("Choose your option:");
Optional<String> result = dialog.showAndWait();
result.ifPresent(option -> System.out.println("Your choice: " + option));
自定义的登录对话框
Dialog<Pair<String, String>> dialog = new Dialog<>();
dialog.setTitle("Login Dialog");
dialog.setHeaderText("Login Dialog");
ImageView imageView = new ImageView(this.getClass().getResource("/login.png").toString());
imageView.setFitWidth(50);
imageView.setFitHeight(50);
dialog.setGraphic(imageView);
ButtonType loginButtonType = new ButtonType("Login", ButtonData.OK_DONE);
dialog.getDialogPane().getButtonTypes().addAll(loginButtonType, ButtonType.CANCEL);
GridPane grid = new GridPane();
grid.setHgap(10);
grid.setVgap(10);
grid.setPadding(new Insets(20, 150, 10, 10));
TextField username = new TextField();
username.setPromptText("Username");
PasswordField password = new PasswordField();
password.setPromptText("Password");
grid.add(new Label("Username:"), 0, 0);
grid.add(username, 1, 0);
grid.add(new Label("Password:"), 0, 1);
grid.add(password, 1, 1);
Node loginButton = dialog.getDialogPane().lookupButton(loginButtonType);
loginButton.setDisable(true);
username.textProperty().addListener((observable, oldValue, newValue) -> {
loginButton.setDisable(newValue.trim().isEmpty());
});
dialog.getDialogPane().setContent(grid);
Platform.runLater(() -> username.requestFocus());
dialog.setResultConverter(dialogButton -> {
if (dialogButton == loginButtonType) {
return new Pair<>(username.getText(), password.getText());
}
return null;
});
Optional<Pair<String, String>> result = dialog.showAndWait();
result.ifPresent(usernamePassword -> {
System.out.println("Username=" + usernamePassword.getKey() + ", Password=" + usernamePassword.getValue());
});
修改主程序左上角的图标
Stage stage = (Stage) dialog.getDialogPane().getScene().getWindow();
stage.getIcons().add(new Image(this.getClass().getResource("/login.png").toString()));
.png)
隐藏左上角图标
dialog.initStyle(StageStyle.UTILITY);
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