JavaFX TextField：自动将文本转换为大写

Question

<TextField fx:id="input_search" onKeyPressed="#keyListener" prefHeight="25.0" prefWidth="197.0" />

我的控制器中的代码：

public void keyListener(KeyEvent event){
    //maybe transform the pressed key to uppercase here...
}

Answer 1

有几种方法可以实现这一点：

重写replacetext()

TextField textField = new TextField() {
    @Override public void replaceText(int start, int end, String text) {
        super.replaceText(start, end, text.toUpperCase());
    }
};

使用TextFormatter

textField.setTextFormatter(new TextFormatter<>((change) -> {
    change.setText(change.getText().toUpperCase());
    return change;
}));

input_search.textProperty().addListener((ov, oldValue, newValue) -> {
     input_search.setText(newValue.toUpperCase());
});