I have a problem with primeFaces and I want the camera to be disabled and re-enabled I have this button that when clicking, the pc camera is enabled. What happens is that as soon as I enter the camera it is already enabled and the component is assumed to be in the "rendered=" false "state (Obviously in the code I use it with a ManagedBean to change the state of the re-render).
Image of the button:
Then I give in taking a photo displays <p:dialog> with the component <p:photoCam> this component is supposed to be reenderized when you click the button that I showed previously
Finally, if I give it to Capture, the camera should be disabled and the flash should turn off. But this does not happen and the percentage compo_de% is as if it continues to work.
Finally I leave the code:
(index.xhtml)
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:p="http://primefaces.org/ui">
<h:head>
<title>Facelet Title</title>
</h:head>
<h:body>
<h:form id="form">
<p:commandButton value="Tomar foto" onclick="PF('dlg').show()" onsuccess="#{photoCamView.changeStatus()}"/>
<p:dialog widgetVar="dlg" modal="true" draggable="false" resizable="false">
<p:photoCam rendered="#{photoCamView.showMyCam}" widgetVar="pc" listener="#{photoCamView.oncapture}"/>
<p:commandButton id="cam" onclick="PF('dlg').hide()" type="button" value="Capture" actionListener="#{photoCamView.changeStatus()}" />
</p:dialog>
</h:form>
</h:body>
</html>
ManagedBean PhotoCamView (I do not want to take the photo, all I want is what I mentioned above) The changeStatus () method is responsible for changing the state of the render:
import java.io.File;
import java.io.IOException;
import javax.annotation.PostConstruct;
import javax.faces.FacesException;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.imageio.stream.FileImageOutputStream;
import org.primefaces.event.CaptureEvent;
@ManagedBean
@ViewScoped
public class PhotoCamView {
private boolean showMyCam;
private String filename;
@PostConstruct
public void init(){
this.showMyCam = false;
}
private String getRandomImageName() {
int i = (int) (Math.random() * 10000000);
return String.valueOf(i);
}
public String getFilename() {
return filename;
}
public void oncapture(CaptureEvent captureEvent) {
filename = getRandomImageName();
byte[] data = captureEvent.getData();
ExternalContext externalContext = FacesContext.getCurrentInstance().getExternalContext();
String newFileName = externalContext.getRealPath("") + File.separator + "resources" + File.separator + "demo" +
File.separator + "images" + File.separator + "photocam" + File.separator + filename + ".jpeg";
FileImageOutputStream imageOutput;
try {
imageOutput = new FileImageOutputStream(new File(newFileName));
imageOutput.write(data, 0, data.length);
imageOutput.close();
}
catch(IOException e) {
throw new FacesException("Error in writing captured image.", e);
}
}
public void changeStatus(){
if(this.showMyCam == true){
this.showMyCam = false;
}else{
this.showMyCam = true;
}
}
public boolean isShowMyCam() {
return showMyCam;
}
public void setShowMyCam(boolean showMyCam) {
this.showMyCam = showMyCam;
}
}
Any ideas? I've tried everything.