IDE:
- Eclipse
- Desktop Windows 7
- Simulator Nexus 5
- Device
I want to open the gallery of the device and display the image selected bythe user back. I make a button and and an ActionListener should deflect me to the device's gallery. But the simulator shows a blank screen even if I omit the opening of the gallery part and just add the button. Also, It gives the following exception in the log:-
Jul 20, 2017 4:11:00 PM java.util.prefs.WindowsPreferences <init>
WARNING: Could not open/create prefs root node Software\JavaSoft\Prefs at root 0x80000002. Windows RegCreateKeyEx(...) returned error code 5.
java.io.UTFDataFormatException: malformed input around byte 64
at java.io.DataInputStream.readUTF(Unknown Source)
at java.io.DataInputStream.readUTF(Unknown Source)
at com.codename1.ui.util.Resources.loadTheme(Resources.java:1270)
at com.codename1.ui.util.Resources.openFileImpl(Resources.java:303)
at com.codename1.ui.util.Resources.openFile(Resources.java:269)
at com.codename1.ui.util.Resources.<init>(Resources.java:189)
at com.codename1.ui.util.Resources.open(Resources.java:768)
at com.codename1.ui.util.Resources.open(Resources.java:688)
at com.codename1.impl.javase.JavaSEPort$4.run(JavaSEPort.java:1720)
at com.codename1.ui.Display.processSerialCalls(Display.java:1056)
at com.codename1.ui.Display.mainEDTLoop(Display.java:873)
at com.codename1.ui.RunnableWrapper.run(RunnableWrapper.java:120)
at com.codename1.impl.CodenameOneThread.run(CodenameOneThread.java:176)
The following is my main java file made on an empty new bare bone project:-
package com.mycompany.myapp;
import com.codename1.ui.Display;
import com.codename1.ui.Form;
import com.codename1.ui.Image;
import com.codename1.ui.Button;
import com.codename1.ui.Dialog;
import com.codename1.ui.Label;
import com.codename1.ui.plaf.UIManager;
import com.codename1.ui.util.Resources;
import com.codename1.components.ImageViewer;
import com.codename1.io.Log;
import com.codename1.media.MediaManager;
import com.codename1.ui.Toolbar;
import com.codename1.ui.events.ActionEvent;
import com.codename1.ui.events.ActionListener;
import java.io.IOException;
/**
* This file was generated by <a href="https://www.codenameone.com/">Codename One</a> for the purpose
* of building native mobile applications using Java.
*/
public class MyApplication {
private Form current;
private Resources theme;
public void init(Object context) {
theme = UIManager.initFirstTheme("/theme");
// Enable Toolbar on all Forms by default
Toolbar.setGlobalToolbar(true);
// Pro only feature, uncomment if you have a pro subscription
// Log.bindCrashProtection(true);
}
public void start() {
if(current != null){
current.show();
return;
}
Form hi = new Form("Hi World");
hi.addComponent(new Label("Hi World"));
Button gallery = new Button("Browse");
hi.add(gallery);
gallery.addActionListener(new ActionListener<ActionEvent>() {
@Override
public void actionPerformed(ActionEvent evt) {
// TODO Auto-generated method stub
Display.getInstance().openGallery((e) -> {
if(e != null && e.getSource() != null) {
// String file = (String)e.getSource();
// try {
// Label path = new Label(file);
// hi.add(path);
//
// } catch(Exception err) {
// Log.e(err);
// }
}
}, Display.GALLERY_IMAGE);
}
});
}
public void stop() {
current = Display.getInstance().getCurrent();
if(current instanceof Dialog) {
((Dialog)current).dispose();
current = Display.getInstance().getCurrent();
}
}
public void destroy() {
}
}
