How to get value for boolean variable from controller

Question

I have a controller where I have this code. I need to pass BooleanVariableName to another controller

  PageReference pageRef = new PageReference('/apex/ContactV1?id=' + contact.Id);
  pageRef.getParameters().put('BooleanVariableName', 'true');
  pageRef.setRedirect(true);
  return pageRef;

In second controller, I put the following code to get the value for BooleanVariableName. This controller is the conroller for page ContactV1

 Boolean  PBV = system.CurrentPageReference().GetParameters().get('BooleanVariableName');

When I tried to save it it gave me the following error. Error: Compile Error: Illegal assignment from String to Boolean

Please help.Thanks in advance

Answer 1

All parameters are passed as strings so you will have to do this:

if you are not going to ever call the controller from anon apex and always be in VF context you can do this (sfdcfox):

boolean pbv = ApexPages.currentPage().getParameters().get('BooleanVariable‌​Name') == 'true';

otherwise (Generally not needed and not typically a pattern you should follow as there are other ways to mitigate it)

Boolean PBV;

try{
    PBV = boolean.valueOf(ApexPages.currentPage().getParameters().get('BooleanVariableName'));
}catch(Exception e){ //covers not in VF context use case
   PBV = false;
}