public class PhotoManager {     public void handleState(PhotoTask photoTask, int state) {         switch (state) {             // The task finished downloading the image             case DOWNLOAD_COMPLETE:             // Decodes the image                 mDecodeThreadPool.execute(                         photoTask.getPhotoDecodeRunnable());             ...         }         ...     }     ... }

class PhotoDecodeRunnable implements Runnable {     // Defines the code to run for this task     public void run() {         /*          * Stores the current Thread in the          * object that contains PhotoDecodeRunnable          */         mPhotoTask.setImageDecodeThread(Thread.currentThread());         ...     }     ... }

public class PhotoManager {     public static void cancelAll() {         /*          * Creates an array of Runnables that's the same size as the          * thread pool work queue          */         Runnable[] runnableArray = new Runnable[mDecodeWorkQueue.size()];         // Populates the array with the Runnables in the queue         mDecodeWorkQueue.toArray(runnableArray);         // Stores the array length in order to iterate over the array         int len = runnableArray.length;         /*          * Iterates over the array of Runnables and interrupts each one's Thread.          */         synchronized (sInstance) {             // Iterates over the array of tasks             for (int runnableIndex = 0; runnableIndex < len; runnableIndex++) {                 // Gets the current thread                 Thread thread = runnableArray[taskArrayIndex].mThread;                 // if the Thread exists, post an interrupt to it                 if (null != thread) {                     thread.interrupt();                 }             }         }     }     ... }

/*  * Before continuing, checks to see that the Thread hasn't  * been interrupted  */ if (Thread.interrupted()) {     return; } ... // Decodes a byte array into a Bitmap (CPU-intensive) BitmapFactory.decodeByteArray(         imageBuffer, 0, imageBuffer.length, bitmapOptions); ...