本文介绍了在从Combobox Javafx中选择项目时，如何将文本设置为TextField？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想从组合框中获取所选项，在事件之后单击它在TextField上显示一个不同的文本，声明为txtActivity
代码不工作
需要帮助
这里卡住了
if（cmbComponent.getSelectionModel（）。getSelectedItem（）。equals（Ministry of Water））{
txtActivity.setText（1.0.0）;
}
这是我的完整代码
包应用程序;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.ResourceBundle;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.RichTextString;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ComboBox;
import javafx.scene.control.DatePicker;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.stage.Stage;
public class SafeguardTrackingToolController implements可初始化{
@FXML
private TextField txtActivity;
@FXML
private TextArea txtComments;
/ * @ FXML
private ComboBox< String> cmbComponent; * /
@FXML
private ComboBox<详细信息> cmbComponent;
private ObservableList<详细信息> cmbComponentData = FXCollections.observableArrayList（）;
@FXML
private TableColumn
tblComponent，
tblActivity，
tableColumnForTor，
tblContract，
tblfirst，
tblFinal，
tblBank，
tblDisclosure，
tblNema，
tblBudgetRe，
tblBudgetPro，
tblBegin，
tblComments;
@FXML
private TableView<项目> tableViewForExcel;
@FXML
private DatePicker
dateTor，
dateContract，
dateFirstDraft，
dateFinalDraft，
dateBank，
dateDisclosure，
dateNema，
dateBudget，
dateProvided，
dateImplementation;
@FXML
private Button btnAdd，btnReset，btnCreateAnotherSheet，btnExcel，btnDelete;
private final ObservableList<项目> data = FXCollections.observableArrayList（new Items（null，null，null，null，null，null，null，null，null，null，null，null，
@Override
public void initialize（URL location，ResourceBundle resources）{
// TODO自动生成方法存根
tblComponent .setCellValueFactory（new PropertyValueFactory（Component））;
tblActivity.setCellValueFactory（new PropertyValueFactory（Activity））;
tableColumnForTor.setCellValueFactory（new PropertyValueFactory（Torr））;
tblContract.setCellValueFactory（new PropertyValueFactory（Contract））;
tblfirst.setCellValueFactory（new PropertyValueFactory（FirstDraft））;
tblFinal.setCellValueFactory（new PropertyValueFactory（FinalDraft））;
tblBank.setCellValueFactory（new PropertyValueFactory（Bank））;
tblDisclosure.setCellValueFactory（new PropertyValueFactory（Disclosure））;
tblNema.setCellValueFactory（new PropertyValueFactory（Nema））;
tblBudgetRe.setCellValueFactory（new PropertyValueFactory（Budget））;
tblBudgetPro.setCellValueFactory（new PropertyValueFactory（Provided））;
tblBegin.setCellValueFactory（new PropertyValueFactory（Implementation））;
tblComments.setCellValueFactory（new PropertyValueFactory（Comment））;
cmbComponentData.add（new Details（Ministry of Water，））;
cmbComponentData.add（new Details（Ministry of Lands，））;
cmbComponentData.add（new Details（Ministry of Minerals，））;
cmbComponentData.add（new Details（Ministry of ManKind，））;
if（cmbComponent.getSelectionModel（）。getSelectedItem（）。equals（Ministry of Water））{
txtActivity.setText（1.0.0）;
}
cmbComponent.setItems（cmbComponentData）;
tableViewForExcel.getItems（）。setAll（this.data）;
tableViewForExcel.setEditable（true）;
}
public static class Items {
// setters和getters应该与简单的字符串属性同名
private final SimpleStringProperty Component;
private final SimpleStringProperty Activity;
private final SimpleStringProperty Torr;
private final SimpleStringProperty Contract;
private final SimpleStringProperty FirstDraft;
private final SimpleStringProperty FinalDraft;
private final SimpleStringProperty Bank;
private final SimpleStringProperty披露;
private final SimpleStringProperty Nema;
private final SimpleStringProperty Budget;
private final SimpleStringProperty提供;
private final SimpleStringProperty实现;
private final SimpleStringProperty注释;
private Item（String Comp，String Act，
String Tor，String Co，
String FDraft，String FinalDra，
String Ban，String Dis，String Nem，
String Bud，String Pro，String Im，String Comm）{
this.Component = new SimpleStringProperty（Comp）;
this.Activity = new SimpleStringProperty（Act）;
this.Torr = new SimpleStringProperty（Tor）;
this.Contract = new SimpleStringProperty（Co）;
this.FirstDraft = new SimpleStringProperty（FDraft）;
this.FinalDraft = new SimpleStringProperty（FinalDra）;
this.Bank = new SimpleStringProperty（Ban）;
this.Disclosure = new SimpleStringProperty（Dis）;
this.Nema = new SimpleStringProperty（Nem）;
this.Budget = new SimpleStringProperty（Bud）;
this.Provided = new SimpleStringProperty（Pro）;
this.Implementation = new SimpleStringProperty（Im）;
this.Comment = new SimpleStringProperty（Comm）;
}
public String getComponent（）{
return Component.get（）;
}
public void setComponent（String Comp）{
Component.set（Comp）;
}
public String getActivity（）{
return Activity.get（）;
}
public void setAcivity（String Act）{
Activity.set（Act）;
}
public String getTorr（）{
return Torr.get（）;
}
public void setTorr（String Tor）{
Torr.set（Tor）;
}
public String getContract（）{
return Contract.get（）;
}
public void setContract（String Co）{
Contract.set（Co）;
}
public String getFirstDraft（）{
return FirstDraft.get（）;
}
public void setFirstDraft（String FDraft）{
FirstDraft.set（FDraft）;
}
public String getFinalDraft（）{
return FinalDraft.get（）;
}
public void setFinalDraft（String FinalDra）{
FinalDraft.set（FinalDra）;
}
public String getBank（）{
return Bank.get（）;
}
public void setBank（String Ban）{
Bank.set（Ban）;
}
public String getDisclosure（）{
return Disclosure.get（）;
}
public void setDisclosure（String Dis）{
Disclosure.set（Dis）;
}
public String getNema（）{
return Nema.get（）
}
public void setNema（String Nem）{
Nema.set（Nem）;
}
public String getBudget（）{
return Budget.get（）;
}
public void setBudget（String Bud）{
Budget.set（Bud）;
}
public String getProvided（）{
return Provided.get（）;
}
public void setProvide（String Pro）{
Provided.set（Pro）;
}
public String getImplementation（）{
return Implementation.get（）;
}
public void setImplementation（String Im）{
Implementation.set（Im）;
}
public String getComment（）{
return Comment.get（）;
}
public void setComment（String Comm）{
Comment.set（Comm）;
}
}
private void write（）throws FileNotFoundException，IOException {
try {
文件myFile =新文件（example.xlsx）;
final XSSFWorkbook工作簿;
if（myFile.exists（）== false）{
System.out.println（Creating a new workbook'+ myFile +'）;
workbook = new XSSFWorkbook（）;
} else {
System.out.println（追加到现有工作簿+ myFile +'）;
final InputStream is = new FileInputStream（myFile）;
try {
workbook = new XSSFWorkbook（is）;
} finally {
is.close（）;
}
}
int sheetIndex = 1;
while（workbook.getSheet（sample+ sheetIndex）！= null）{
sheetIndex ++;
}
XSSFSheet spreadsheet = workbook.createSheet（sample）;
XSSFRow row = null;
XSSFCell cell = null;
row = spreadsheet.createRow（0）;
cell = row.createCell（0）;
cell.setCellValue（Component）;
cell = row.createCell（1）;
cell.setCellValue（Activity）;
cell = row.createCell（2）;
cell.setCellValue（TOR）;
cell = row.createCell（3）;
cell.setCellValue（Contract）;
cell = row.createCell（4）;
cell.setCellValue（First Draft）;
cell = row.createCell（5）;
cell.setCellValue（final Draft）;
cell = row.createCell（6）;
cell.setCellValue（银行结余）;
cell = row.createCell（7）;
cell.setCellValue（Disclosure）;
cell = row.createCell（8）;
cell.setCellValue（NEMA License）;
cell = row.createCell（9）;
cell.setCellValue（Budget Request& Prepared）;
cell = row.createCell（10）;
cell.setCellValue（Budget Provided）;
cell = row.createCell（11）;
cell.setCellValue（Begin& Implementation）;
cell = row.createCell（12）;
cell.setCellValue（Comments）;
int i = 1;
for（Items item：tableViewForExcel.getItems（））{
row = spreadsheet.createRow（i）;
// row.createCell（0）.setCellValue（item.getComponent（））;
cell = row.createCell（0）;
cell.setCellValue（tblComponent.getCellData（1）.toString（））;
cell = row.createCell（1）;
cell.setCellValue（tblActivity.getCellData（1）.toString（））;
cell = row.createCell（2）;
cell.setCellValue（tableColumnForTor.getCellData（1）.toString（））;
cell = row.createCell（3）;
cell.setCellValue（tblContract.getCellData（1）.toString（））;
cell = row.createCell（4）;
cell.setCellValue（tblfirst.getCellData（1）.toString（））;
cell = row.createCell（5）;
cell.setCellValue（tblFinal.getCellData（1）.toString（））;
cell = row.createCell（6）;
cell.setCellValue（tblBank.getCellData（1）.toString（））;
cell = row.createCell（7）;
cell.setCellValue（tblDisclosure.getCellData（1）.toString（））;
cell = row.createCell（8）;
cell.setCellValue（tblNema.getCellData（1）.toString（））;
cell = row.createCell（9）;
cell.setCellValue（tblBudgetRe.getCellData（1）.toString（））;
cell = row.createCell（10）;
cell.setCellValue（tblBudgetPro.getCellData（1）.toString（））;
cell = row.createCell（11）;
cell.setCellValue（tblBegin.getCellData（1）.toString（））;
cell = row.createCell（12）;
cell.setCellValue（tblComments.getCellData（1）.toString（））;
// ....添加其他列数据
i ++;
}
FileOutputStream out = new FileOutputStream（myFile）;
workbook.write（out）;
out.close（）;
System.out.println（Data wrtten Successfully）;
} catch（Exception e）{
e.printStackTrace（）;
}
}
@FXML
private void onClickToAddOntheTable（ActionEvent event）{
tableViewForExcel.getItems（）。 add（new Items（
cmbComponent.getValue（）。toString（），
txtActivity.getText（），
dateTor.getValue（）。toString（），
dateContract.getValue （），
dateFirstDraft.getValue（）。toString（），
dateFinalDraft.getValue（）。toString（），
dateBank.getValue b $ b dateDisclosure.getValue（）。toString（），
dateNema.getValue（）。toString（），
dateBudget.getValue（）。toString（），
dateProvided.getValue .toString（），
dateImplementation.getValue（）。toString（），
txtComments.getText（）））;
onClickToReset（event）;
}
@FXML
private void onClickToSaveInExcel（ActionEvent event）{
try {
write （）;
} catch（FileNotFoundException e）{
// TODO自动生成的catch块
e.printStackTrace（）;
} catch（IOException e）{
// TODO自动生成的catch块
e.printStackTrace（）;
}
}
@FXML
private void onClickToReset（ActionEvent event）{
cmbComponent.setValue（null）;
txtActivity.clear（）;
dateTor.setValue（null）;;
dateContract.setValue（null）;
dateFirstDraft.setValue（null）;
dateFinalDraft.setValue（null）;
dateBank.setValue（null）;
dateDisclosure.setValue（null）;
dateNema.setValue（null）;
dateBudget.setValue（null）;
dateProvided.setValue（null）;
dateImplementation.setValue（null）;
txtComments.clear（）;
}
@FXML
private void onClickToResetTable（ActionEvent event）{
tableViewForExcel.getItems（）。clear
}
@FXML
private void onClickToCreateAnotherSheet（ActionEvent event）{
LoadAnotherSheet（）;
}
private void LoadAnotherSheet（）{
父root = null;
try {
root = FXMLLoader.load（getClass（）。getResource（SafeguardTrackingToolNewSheetUI.fxml））;
场景scene = new Scene（root）;
Stage nStage = new Stage（）;
nStage.setScene（scene）;
//nStage.setMaximized(true）;
nStage.setTitle（Another Sheet）;
nStage.show（）;
Stage stage =（Stage）btnCreateAnotherSheet.getScene（）。getWindow（）;
stage.close（）;
} catch（IOException e）{
e.printStackTrace（）;
}
}
public class Details {
private final StringProperty ministryOfWater;
private final StringProperty ministyOfLands;
public Details（String ministryOfWater，String ministyOfLands）{
this.ministryOfWater = new SimpleStringProperty（ministryOfWater）;
this.ministyOfLands = new SimpleStringProperty（ministyOfLands）;
}
public String getMinistryOfWater（）{
return ministryOfWater.get（）;
}
public void setMinistryOfWater（String ministryOfWater）{
this.ministryOfWater.set（ministryOfWater）;
}
public StringProperty mistryOfWaterProperty（）{
return ministryOfWater;
}
//完成的水务部门
public String getMinistyOfLands（）{
return ministyOfLands.get（）;
}
public void setMinistyOfLands（String ministyOfLands）{
this.ministyOfLands.set（ministyOfLands）;
}
public StringProperty ministyOfLandsProperty（）{
return ministyOfLands;
}
//完成土地部门
@Override
public String toString（）{
return getMinistryOfWater（） + getMinistyOfLands（）;
}
}
}
getSelectedItem（）时，选择
null 所以你的谓词总是失败。一种方法是设置所需的索引并对其进行测试。 cmbComponent.getSelectionModel
if（cmbComponent.getSelectionModel（）。getSelectedIndex（）== 0）{
txtActivity.setText（1.0.0）;
}
查看您之前关于此主题的
已测试：
import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.ComboBox;
import javafx.scene.control.TextField;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
/ **
* @see http://stackoverflow.com/a/38347332/230513
* /
public class ComboBoxTest extends Application {
@Override
public void start（Stage primaryStage）{
primaryStage.setTitle（ComboBoxTest）;
final TextField txtActivity = new TextField（）;
final ComboBox cmbComponent = new ComboBox（）;
ObservableList< Details> cmbComponentData = FXCollections.observableArrayList（）;
cmbComponentData.add（new Details（Ministry of Water，1.0.0））;
cmbComponentData.add（new Details（Ministry of Lands，2.0.0））;
cmbComponentData.add（new Details（Ministry of Minerals，3.0.0））;
cmbComponentData.add（new Details（Manikind，4.0.0））;
cmbComponent.setItems（cmbComponentData）;
cmbComponent.getSelectionModel（）。selectFirst（）;
txtActivity.setText（cmbComponentData.get（0）.getText（））;
cmbComponent.valueProperty（）。addListener（（o，ov，nv） - > {
Details d =（Details）nv;
txtActivity.setText（d.getText（））;
}）;
VBox root = new VBox（）;
root.getChildren（）。addAll（cmbComponent，txtActivity）;
场景scene = new Scene（root）;
primaryStage.setScene（scene）;
primaryStage.show（）;
}
private静态类详细信息{
private final StringProperty name;
private final StringProperty text;
public Details（String name，String text）{
this.name = new SimpleStringProperty（name）;
this.text = new SimpleStringProperty（text）;
}
public String getName（）{
return name.get（）;
}
public void setName（String name）{
this.name.set（name）;
}
public StringProperty nameProperty（）{
return name;
}
public String getText（）{
return text.get（）;
}
public void setText（String text）{
this.text.set（text）;
}
public StringProperty textProperty（）{
return text;
}
@Override
public String toString（）{
return getName（）;
}
}
public static void main（String [] args）{
launch（args）;
}
}
I want to get the selected item from the combobox, after the event click it displays a different text on a TextField declared as txtActivity
I am stuck at this point at which the code is not workingneed help
am stuck at this point
if(cmbComponent.getSelectionModel().getSelectedItem().equals("Ministry of Water")){
txtActivity.setText("1.0.0");
}
This is my full code
package application;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.ResourceBundle;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.RichTextString;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ComboBox;
import javafx.scene.control.DatePicker;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.stage.Stage;
public class SafeguardTrackingToolController implements Initializable {
@FXML
private TextField txtActivity;
@FXML
private TextArea txtComments;
/*@FXML
private ComboBox<String> cmbComponent;*/
@FXML
private ComboBox < Details > cmbComponent;
private ObservableList < Details > cmbComponentData = FXCollections.observableArrayList();
@FXML
private TableColumn
tblComponent,
tblActivity,
tableColumnForTor,
tblContract,
tblfirst,
tblFinal,
tblBank,
tblDisclosure,
tblNema,
tblBudgetRe,
tblBudgetPro,
tblBegin,
tblComments;
@FXML
private TableView < Items > tableViewForExcel;
@FXML
private DatePicker
dateTor,
dateContract,
dateFirstDraft,
dateFinalDraft,
dateBank,
dateDisclosure,
dateNema,
dateBudget,
dateProvided,
dateImplementation;
@FXML
private Button btnAdd, btnReset, btnCreateAnotherSheet, btnExcel, btnDelete;
private final ObservableList < Items > data = FXCollections.observableArrayList(new Items(null, null, null, null, null, null, null, null, null, null, null, null, null));
@Override
public void initialize(URL location, ResourceBundle resources) {
// TODO Auto-generated method stub
tblComponent.setCellValueFactory(new PropertyValueFactory("Component"));
tblActivity.setCellValueFactory(new PropertyValueFactory("Activity"));
tableColumnForTor.setCellValueFactory(new PropertyValueFactory("Torr"));
tblContract.setCellValueFactory(new PropertyValueFactory("Contract"));
tblfirst.setCellValueFactory(new PropertyValueFactory("FirstDraft"));
tblFinal.setCellValueFactory(new PropertyValueFactory("FinalDraft"));
tblBank.setCellValueFactory(new PropertyValueFactory("Bank"));
tblDisclosure.setCellValueFactory(new PropertyValueFactory("Disclosure"));
tblNema.setCellValueFactory(new PropertyValueFactory("Nema"));
tblBudgetRe.setCellValueFactory(new PropertyValueFactory("Budget"));
tblBudgetPro.setCellValueFactory(new PropertyValueFactory("Provided"));
tblBegin.setCellValueFactory(new PropertyValueFactory("Implementation"));
tblComments.setCellValueFactory(new PropertyValueFactory("Comment"));
cmbComponentData.add(new Details("Ministry of Water", ""));
cmbComponentData.add(new Details("Ministry of Lands", ""));
cmbComponentData.add(new Details("Ministry of Minerals", ""));
cmbComponentData.add(new Details("Ministry of ManKind", ""));
if (cmbComponent.getSelectionModel().getSelectedItem().equals("Ministry of Water")) {
txtActivity.setText("1.0.0");
}
cmbComponent.setItems(cmbComponentData);
tableViewForExcel.getItems().setAll(this.data);
tableViewForExcel.setEditable(true);
}
public static class Items {
//the setters and getters should be of the same name with the simple string property
private final SimpleStringProperty Component;
private final SimpleStringProperty Activity;
private final SimpleStringProperty Torr;
private final SimpleStringProperty Contract;
private final SimpleStringProperty FirstDraft;
private final SimpleStringProperty FinalDraft;
private final SimpleStringProperty Bank;
private final SimpleStringProperty Disclosure;
private final SimpleStringProperty Nema;
private final SimpleStringProperty Budget;
private final SimpleStringProperty Provided;
private final SimpleStringProperty Implementation;
private final SimpleStringProperty Comment;
private Items(String Comp, String Act,
String Tor, String Co,
String FDraft, String FinalDra,
String Ban, String Dis, String Nem,
String Bud, String Pro, String Im, String Comm) {
this.Component = new SimpleStringProperty(Comp);
this.Activity = new SimpleStringProperty(Act);
this.Torr = new SimpleStringProperty(Tor);
this.Contract = new SimpleStringProperty(Co);
this.FirstDraft = new SimpleStringProperty(FDraft);
this.FinalDraft = new SimpleStringProperty(FinalDra);
this.Bank = new SimpleStringProperty(Ban);
this.Disclosure = new SimpleStringProperty(Dis);
this.Nema = new SimpleStringProperty(Nem);
this.Budget = new SimpleStringProperty(Bud);
this.Provided = new SimpleStringProperty(Pro);
this.Implementation = new SimpleStringProperty(Im);
this.Comment = new SimpleStringProperty(Comm);
}
public String getComponent() {
return Component.get();
}
public void setComponent(String Comp) {
Component.set(Comp);
}
public String getActivity() {
return Activity.get();
}
public void setAcivity(String Act) {
Activity.set(Act);
}
public String getTorr() {
return Torr.get();
}
public void setTorr(String Tor) {
Torr.set(Tor);
}
public String getContract() {
return Contract.get();
}
public void setContract(String Co) {
Contract.set(Co);
}
public String getFirstDraft() {
return FirstDraft.get();
}
public void setFirstDraft(String FDraft) {
FirstDraft.set(FDraft);
}
public String getFinalDraft() {
return FinalDraft.get();
}
public void setFinalDraft(String FinalDra) {
FinalDraft.set(FinalDra);
}
public String getBank() {
return Bank.get();
}
public void setBank(String Ban) {
Bank.set(Ban);
}
public String getDisclosure() {
return Disclosure.get();
}
public void setDisclosure(String Dis) {
Disclosure.set(Dis);
}
public String getNema() {
return Nema.get();
}
public void setNema(String Nem) {
Nema.set(Nem);
}
public String getBudget() {
return Budget.get();
}
public void setBudget(String Bud) {
Budget.set(Bud);
}
public String getProvided() {
return Provided.get();
}
public void setProvide(String Pro) {
Provided.set(Pro);
}
public String getImplementation() {
return Implementation.get();
}
public void setImplementation(String Im) {
Implementation.set(Im);
}
public String getComment() {
return Comment.get();
}
public void setComment(String Comm) {
Comment.set(Comm);
}
}
private void write() throws FileNotFoundException, IOException {
try {
File myFile = new File("example.xlsx");
final XSSFWorkbook workbook;
if (myFile.exists() == false) {
System.out.println("Creating a new workbook '" + myFile + "'");
workbook = new XSSFWorkbook();
} else {
System.out.println("Appending to existing workbook '" + myFile + "'");
final InputStream is = new FileInputStream(myFile);
try {
workbook = new XSSFWorkbook(is);
} finally {
is.close();
}
}
int sheetIndex = 1;
while (workbook.getSheet("sample" + sheetIndex) != null) {
sheetIndex++;
}
XSSFSheet spreadsheet = workbook.createSheet("sample");
XSSFRow row = null;
XSSFCell cell = null;
row = spreadsheet.createRow(0);
cell = row.createCell(0);
cell.setCellValue("Component");
cell = row.createCell(1);
cell.setCellValue("Activity");
cell = row.createCell(2);
cell.setCellValue("TOR");
cell = row.createCell(3);
cell.setCellValue("Contract");
cell = row.createCell(4);
cell.setCellValue("First Draft");
cell = row.createCell(5);
cell.setCellValue("Final Draft");
cell = row.createCell(6);
cell.setCellValue("Bank Clearance");
cell = row.createCell(7);
cell.setCellValue("Disclosure");
cell = row.createCell(8);
cell.setCellValue("NEMA Licence");
cell = row.createCell(9);
cell.setCellValue("Budget Request & Prepared");
cell = row.createCell(10);
cell.setCellValue("Budget Provided");
cell = row.createCell(11);
cell.setCellValue("Begin & Implementation");
cell = row.createCell(12);
cell.setCellValue("Comments");
int i = 1;
for (Items item: tableViewForExcel.getItems()) {
row = spreadsheet.createRow(i);
// row.createCell(0).setCellValue(item.getComponent());
cell = row.createCell(0);
cell.setCellValue(tblComponent.getCellData(1).toString());
cell = row.createCell(1);
cell.setCellValue(tblActivity.getCellData(1).toString());
cell = row.createCell(2);
cell.setCellValue(tableColumnForTor.getCellData(1).toString());
cell = row.createCell(3);
cell.setCellValue(tblContract.getCellData(1).toString());
cell = row.createCell(4);
cell.setCellValue(tblfirst.getCellData(1).toString());
cell = row.createCell(5);
cell.setCellValue(tblFinal.getCellData(1).toString());
cell = row.createCell(6);
cell.setCellValue(tblBank.getCellData(1).toString());
cell = row.createCell(7);
cell.setCellValue(tblDisclosure.getCellData(1).toString());
cell = row.createCell(8);
cell.setCellValue(tblNema.getCellData(1).toString());
cell = row.createCell(9);
cell.setCellValue(tblBudgetRe.getCellData(1).toString());
cell = row.createCell(10);
cell.setCellValue(tblBudgetPro.getCellData(1).toString());
cell = row.createCell(11);
cell.setCellValue(tblBegin.getCellData(1).toString());
cell = row.createCell(12);
cell.setCellValue(tblComments.getCellData(1).toString());
//.... add other column data as well
i++;
}
FileOutputStream out = new FileOutputStream(myFile);
workbook.write(out);
out.close();
System.out.println("Data is wrtten Successfully");
} catch (Exception e) {
e.printStackTrace();
}
}
@FXML
private void onClickToAddOntheTable(ActionEvent event) {
tableViewForExcel.getItems().add(new Items(
cmbComponent.getValue().toString(),
txtActivity.getText(),
dateTor.getValue().toString(),
dateContract.getValue().toString(),
dateFirstDraft.getValue().toString(),
dateFinalDraft.getValue().toString(),
dateBank.getValue().toString(),
dateDisclosure.getValue().toString(),
dateNema.getValue().toString(),
dateBudget.getValue().toString(),
dateProvided.getValue().toString(),
dateImplementation.getValue().toString(),
txtComments.getText()));
onClickToReset(event);
}
@FXML
private void onClickToSaveInExcel(ActionEvent event) {
try {
write();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@FXML
private void onClickToReset(ActionEvent event) {
cmbComponent.setValue(null);
txtActivity.clear();
dateTor.setValue(null);;
dateContract.setValue(null);
dateFirstDraft.setValue(null);
dateFinalDraft.setValue(null);
dateBank.setValue(null);
dateDisclosure.setValue(null);
dateNema.setValue(null);
dateBudget.setValue(null);
dateProvided.setValue(null);
dateImplementation.setValue(null);
txtComments.clear();
}
@FXML
private void onClickToResetTable(ActionEvent event) {
tableViewForExcel.getItems().clear();
}
@FXML
private void onClickToCreateAnotherSheet(ActionEvent event) {
LoadAnotherSheet();
}
private void LoadAnotherSheet() {
Parent root = null;
try {
root = FXMLLoader.load(getClass().getResource("SafeguardTrackingToolNewSheetUI.fxml"));
Scene scene = new Scene(root);
Stage nStage = new Stage();
nStage.setScene(scene);
//nStage.setMaximized(true);
nStage.setTitle("Another Sheet");
nStage.show();
Stage stage = (Stage) btnCreateAnotherSheet.getScene().getWindow();
stage.close();
} catch (IOException e) {
e.printStackTrace();
}
}
public class Details {
private final StringProperty ministryOfWater;
private final StringProperty ministyOfLands;
public Details(String ministryOfWater, String ministyOfLands) {
this.ministryOfWater = new SimpleStringProperty(ministryOfWater);
this.ministyOfLands = new SimpleStringProperty(ministyOfLands);
}
public String getMinistryOfWater() {
return ministryOfWater.get();
}
public void setMinistryOfWater(String ministryOfWater) {
this.ministryOfWater.set(ministryOfWater);
}
public StringProperty ministryOfWaterProperty() {
return ministryOfWater;
}
//finished ministry of water
public String getMinistyOfLands() {
return ministyOfLands.get();
}
public void setMinistyOfLands(String ministyOfLands) {
this.ministyOfLands.set(ministyOfLands);
}
public StringProperty ministyOfLandsProperty() {
return ministyOfLands;
}
//finished with the ministry of lands
@Override
public String toString() {
return getMinistryOfWater() + " " + getMinistyOfLands();
}
}
}
解决方案
When getSelectedItem() is called, the selection is null, so your predicate always fails. One approach would be set the desired index and test it.
cmbComponent.getSelectionModel().selectFirst();
if (cmbComponent.getSelectionModel().getSelectedIndex() == 0) {
txtActivity.setText("1.0.0");
}
Looking at your previous question on this topic, it looks like you want to update the TextField when the ComboBox changes. Implementing the first approach suggested by @fabian, the updated example below adds a ChangeListener to the ComboBox. The listener fetches the required text from the selected instance of Details and uses it to update the TextField.
As tested:
import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.ComboBox;
import javafx.scene.control.TextField;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
/**
* @see http://stackoverflow.com/a/38347332/230513
*/
public class ComboBoxTest extends Application {
@Override
public void start(Stage primaryStage) {
primaryStage.setTitle("ComboBoxTest");
final TextField txtActivity = new TextField();
final ComboBox cmbComponent = new ComboBox();
ObservableList<Details> cmbComponentData = FXCollections.observableArrayList();
cmbComponentData.add(new Details("Ministry of Water", "1.0.0"));
cmbComponentData.add(new Details("Ministry of Lands", "2.0.0"));
cmbComponentData.add(new Details("Ministry of Minerals", "3.0.0"));
cmbComponentData.add(new Details("Ministry of ManKind", "4.0.0"));
cmbComponent.setItems(cmbComponentData);
cmbComponent.getSelectionModel().selectFirst();
txtActivity.setText(cmbComponentData.get(0).getText());
cmbComponent.valueProperty().addListener((o, ov, nv) -> {
Details d = (Details) nv;
txtActivity.setText(d.getText());
});
VBox root = new VBox();
root.getChildren().addAll(cmbComponent, txtActivity);
Scene scene = new Scene(root);
primaryStage.setScene(scene);
primaryStage.show();
}
private static class Details {
private final StringProperty name;
private final StringProperty text;
public Details(String name, String text) {
this.name = new SimpleStringProperty(name);
this.text = new SimpleStringProperty(text);
}
public String getName() {
return name.get();
}
public void setName(String name) {
this.name.set(name);
}
public StringProperty nameProperty() {
return name;
}
public String getText() {
return text.get();
}
public void setText(String text) {
this.text.set(text);
}
public StringProperty textProperty() {
return text;
}
@Override
public String toString() {
return getName();
}
}
public static void main(String[] args) {
launch(args);
}
}
这篇关于在从Combobox Javafx中选择项目时，如何将文本设置为TextField？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！
07-29 12:45