How do I load images (possibly for animation) without flickering?

Created May 4, 2012

Rahul kumar Gupta

To Load an images without flickering then you have use the concept called double buffering.

Steps to be followed

create an object of image class
create and object of Mediatracker class
add image object to Mediatracker
check whether image is loaded or not before painting

Here is an example


class SomeClass {

 MediaTracker tracker;
 Image img;
 ...

  //adding image to tracker
  tracker = new MediaTracker(this);
  tracker.addImage(img,0);
 }

  public void paint(Graphics g) {
    // waiting to get image loaded
    photochecked(0);
    g.drawImage(img,0,0,this);
  }

  //method that will return true if particular image is loaded
  public boolean photochecked(int no) {
    int pchecked=no;
    while(pchecked ==no) {
      if(tracker.checkID(no,true))
       pchecked++;
    } 
    return true;
  }
}