Witam! Mam taki kod:
import java.awt.AWTException;
import java.awt.Color;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.Window.Type;
import java.awt.event.KeyEvent;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.imageio.ImageIO;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.UIManager;
import javax.swing.filechooser.FileNameExtensionFilter;
public class Main implements MouseMotionListener, MouseListener{
JFrame f; JLabel l; static JFileChooser jf; static String trueExtension;
public static void main(String[] args) {
new Main();
}
public Main() {
f = new JFrame();
f.setBounds(0,0,5,5);
f.setLayout(null);
f.setAlwaysOnTop(true);
f.addMouseListener(this);
f.addMouseMotionListener(this);
f.setUndecorated(true);
f.setBackground(new Color(1.0f,1.0f,1.0f,0.1f));
f.setType(Type.UTILITY);
l = new JLabel();
l.setLayout(null);
l.addMouseListener(this);
l.setLayout(null);
l.setBounds(0,0,30,30);
f.add(l);
f.setVisible(true);
}
public static void setLanguage() {
UIManager.put("FileChooser.lookInLabelText","Szukaj w");
UIManager.put("FileChooser.lookInLabelMnemonic",""+KeyEvent.VK_W);
UIManager.put("FileChooser.saveInLabelText","Zapisz w");
UIManager.put("FileChooser.saveInLabelMnemonic",""+KeyEvent.VK_W);
UIManager.put("FileChooser.fileNameLabelText","Nazwa pliku:");
UIManager.put("FileChooser.fileNameLabelMnemonic",""+KeyEvent.VK_N);
UIManager.put("FileChooser.folderNameLabelText","Nazwa katalogu:");
UIManager.put("FileChooser.folderNameLabelMnemonic",""+KeyEvent.VK_N);
UIManager.put("FileChooser.filesOfTypeLabelText","Pliki typu:");
UIManager.put("FileChooser.filesOfTypeLabelMnemonic",""+KeyEvent.VK_P);
UIManager.put("FileChooser.upFolderToolTipText","Poziom wyżej");
UIManager.put("FileChooser.homeFolderToolTipText","Pulpit");
UIManager.put("FileChooser.newFolderToolTipText","Nowy katalog");
UIManager.put("FileChooser.listViewButtonToolTipText","Lista");
UIManager.put("FileChooser.detailsViewButtonToolTipText","Szczegóły");
UIManager.put("FileChooser.fileNameHeaderText","Nazwa");UIManager.put("FileChooser.fileSizeHeaderText","Rozmiar");
UIManager.put("FileChooser.fileTypeHeaderText","Typ");
UIManager.put("FileChooser.fileDateHeaderText","Modyfikacja");
UIManager.put("FileChooser.fileAttrHeaderText","Atrybuty");
UIManager.put("FileChooser.newFolderErrorText","Blad podczas tworzenia katalogu");
UIManager.put("FileChooser.saveButtonText","Zapisz");
UIManager.put("FileChooser.saveButtonMnemonic",""+KeyEvent.VK_Z);
UIManager.put("FileChooser.openButtonText","Otwórz");
UIManager.put("FileChooser.openButtonMnemonic",""+KeyEvent.VK_O);
UIManager.put("FileChooser.cancelButtonText","Anuluj");
UIManager.put("FileChooser.openButtonMnemonic",""+KeyEvent.VK_R);
UIManager.put("FileChooser.openDialogTitleText","Otwórz");
UIManager.put("FileChooser.saveDialogTitleText","Zapisywanie");
UIManager.put("FileChooser.saveButtonToolTipText","Zapisz");
UIManager.put("FileChooser.openButtonToolTipText","Otwórz");
UIManager.put("FileChooser.cancelButtonToolTipText","Anuluj");
UIManager.put("FileChooser.acceptAllFileFilterText","Wszystkie pliki");
}
public static String getExtension() {
String ext = null;
if(jf.getFileFilter().getDescription().equals("Obraz *.png"))
ext="png";
else if(jf.getFileFilter().getDescription().equals("Obraz *.jpg"))
ext="jpg";
else if(jf.getFileFilter().getDescription().equals("Obraz *.jpeg"))
ext="jpeg";
else if(jf.getFileFilter().getDescription().equals("Obraz *.bmp"))
ext="bmp";
return ext;
}
public static File saveFileDialog() {
File xyz = null;
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
}catch(Exception e) {
e.printStackTrace();
}
setLanguage();
JFrame frame = new JFrame();
jf.setDialogTitle("Zapisz zrzut ekranu");
jf.setAcceptAllFileFilterUsed(false);
jf.setFileSelectionMode(JFileChooser.APPROVE_OPTION);
jf.setFileFilter(new FileNameExtensionFilter("Obraz *.png","png"));
jf.setFileFilter(new FileNameExtensionFilter("Obraz *.jpg","jpg"));
jf.setFileFilter(new FileNameExtensionFilter("Obraz *.jpeg","jpeg"));
jf.setFileFilter(new FileNameExtensionFilter("Obraz *.bmp","bmp"));
System.out.println(trueExtension+"savefiledialog");
jf.setCurrentDirectory(new File(System.getProperty("user.home")+"\\desktop"));
if (jf.showSaveDialog(frame) == JFileChooser.APPROVE_OPTION){
System.out.println(trueExtension+"savefiledialog OKKKKKK after");
trueExtension = getExtension();
System.out.println(trueExtension+"savefiledialog OKKKKKK before");
xyz = jf.getSelectedFile();
}
return checkFileName(xyz);
}
public static File checkFileName(File file) {
Pattern pat = Pattern.compile(".*/.png");
Matcher mat = pat.matcher(file.getName());
System.out.println(trueExtension+"checkfilename");
if(mat.matches()) {
return file;
}
else{
File f = new File(file.getAbsolutePath()+".png");
return f;
}
}
public static void saveScreenShot() throws AWTException, IOException{
System.out.println(trueExtension+"savescreenshot");
Robot robot = new Robot();
BufferedImage image = robot.createScreenCapture(new Rectangle(Toolkit.getDefaultToolkit().getScreenSize()));
ImageIO.write(image,getExtension(), saveFileDialog());
}
@Override
public void mouseClicked(MouseEvent e) {
try {
saveScreenShot();
System.out.println(trueExtension+"mouseclicked");
} catch (AWTException | IOException | NullPointerException a) {
JOptionPane.showMessageDialog(null, "Nie udało się zrobić screenshot'a!", "Błąd!", JOptionPane.ERROR_MESSAGE);
a.printStackTrace();
}
catch(IllegalArgumentException o) {}
}
@Override
public void mouseEntered(MouseEvent e) {
f.setBounds(0,0,30,30);
}
@Override
public void mouseExited(MouseEvent e) {
f.setBounds(0,0,5,5);
}
public void mousePressed(MouseEvent arg0) {}
public void mouseReleased(MouseEvent arg0) {}
public void mouseDragged(MouseEvent arg0) {}
public void mouseMoved(MouseEvent arg0) {}
}
Iiiii... Chodzi o to, że chcę, aby gdy użytkownik zatwierdzi, pobrać wybrany filtr, żeby wiedzieć jakie rozszerzenie potrzebuję. Wywala mi takie błędy:
nullsavescreenshot
java.lang.NullPointerException
at Main.getExtension(Main.java:85)
at Main.saveScreenShot(Main.java:145)
at Main.mouseClicked(Main.java:150)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$500(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Wiem jedynie, że chodzi o to, że po prostu tego okna już nie ma. To kiedy mam pobierać te filtry?
Z tego można zobaczyć, że dochodzi jedynie do savescreenshot i dalej nic ;-;. Próbowałem na samym początku nadać zmiennej trueExtension wartość ("null", a potem "png") ale to nie pomogło... Co mam zrobić?