add load() method for handle download progress percent

src/com/androidquery/AbstractAQuery.java

@@ -101,6 +101,33 @@ public abstract class AbstractAQuery<T extends AbstractAQuery<T>> implements Con
 	private Transformer trans;
 	private Integer policy;
 	private HttpHost proxy;
+
+	private LoadListener loadListener;
+
+	public interface LoadListener {
+		/**
+		 * Use Handler handle view change </br>
+		 * <h1>Example: </h1>
+		 * private Handler handler = new Handler(){</br>
+		 * 			 public void handleMessage(Message msg) { </br>
+		 *           super.handleMessage(msg);</br>
+		 *            tv.setText("" + msg.obj); </br>
+		 *           }</br>
+		 *           };</br>
+		 *           String imageurl ="http://jpp2.imghb.com/pic/pic/52/60/24/1396053752602447_a602x602.jpg";</br>
+		 *           aq.id(R.id.imageView1).progress(R.id.progressBar1).load(new LoadListener() {</br>
+		 * 				 public void onLoadProgress(int current, float max) { </br>
+		 *          	 float present = (float) (max - current)/ max; </br>
+		 *         		 Message msg = new Message();</br>
+		 *         		 msg.obj = String.format("%.2f%%", (present *  100)); </br>
+		 *         		 handler.sendMessage(msg); </br>
+		 *           	} </br>
+		 *           }).image(imageurl, false, false);</br>
+		 * @param current
+		 * @param max
+		 */
+		public void onLoadProgress(int current, float max);
+	}
 
 	protected T create(View view){
 
@@ -763,7 +790,7 @@ public T image(String url, boolean memCache, boolean fileCache, int targetWidth,
 	protected T image(String url, boolean memCache, boolean fileCache, int targetWidth, int fallbackId, Bitmap preset, int animId, float ratio, int round, String networkUrl){
 
 		if(view instanceof ImageView){		
-			BitmapAjaxCallback.async(act, getContext(), (ImageView) view, url, memCache, fileCache, targetWidth, fallbackId, preset, animId, ratio, AQuery.ANCHOR_DYNAMIC, progress, ah, policy, round, proxy, networkUrl);			
+			BitmapAjaxCallback.async(act, getContext(), (ImageView) view, url, memCache, fileCache, targetWidth, fallbackId, preset, animId, ratio, AQuery.ANCHOR_DYNAMIC, progress, ah, policy, round, proxy, loadListener, networkUrl);			
 			reset();
 		}
 
@@ -1862,6 +1889,10 @@ protected <K> T invoke(AbstractAjaxCallback<?, K> cb){
 			cb.proxy(proxy.getHostName(), proxy.getPort());
 		}
 
+		if(loadListener != null){
+			cb.load(loadListener);
+		}
+
 		if(act != null){
 			cb.async(act);
 		}else{
@@ -1880,7 +1911,7 @@ protected void reset(){
 		trans = null;
 		policy = CACHE_DEFAULT;
 		proxy = null;
-
+		loadListener = null;
 
 	}
 
@@ -2707,4 +2738,10 @@ public T download(String url, File target, Object handler, String callback){
 
 	}
 
+	public T load(LoadListener listener) {
+		this.loadListener = listener;
+		return self();
+	}
+
+
 }

src/com/androidquery/callback/AbstractAjaxCallback.java

@@ -93,6 +93,7 @@
 import android.view.View;
 
 import com.androidquery.AQuery;
+import com.androidquery.AbstractAQuery.LoadListener;
 import com.androidquery.auth.AccountHandle;
 import com.androidquery.auth.GoogleHandle;
 import com.androidquery.util.AQUtility;
@@ -152,6 +153,8 @@ public abstract class AbstractAjaxCallback<T, K> implements Runnable{
 	private boolean uiCallback = true;
 	private int retry = 0;
 
+	private  LoadListener loadListener;
+
 	@SuppressWarnings("unchecked")
 	private K self(){
 		return (K) this;
@@ -165,6 +168,7 @@ private void clear(){
 		transformer = null;
 		ah = null;
 		act = null;
+		loadListener = null;
 	}
 
 	/**
@@ -459,6 +463,15 @@ public K params(Map<String, ?> params){
 		return self();
 	}
 
+	/**Set the loadlistener can listen downloading percent
+	 * @param li
+	 * @return
+	 */
+	public K load(LoadListener loadlistener){
+		loadListener = loadlistener;
+		return self();
+	}
+
 	/**
 	 * Set the progress view (can be a progress bar or any view) to be shown (VISIBLE) and hide (GONE) depends on progress.
 	 *
@@ -1709,7 +1722,7 @@ private void copy(InputStream is, OutputStream os, int max) throws IOException{
 			p = new Progress(o); 
 		}
 
-		AQUtility.copy(is, os, max, p);
+		AQUtility.copy(is, os, max, p, loadListener);
 
 
 	}

src/com/androidquery/callback/BitmapAjaxCallback.java

@@ -54,6 +54,7 @@
 import android.widget.ImageView;
 
 import com.androidquery.AQuery;
+import com.androidquery.AbstractAQuery.LoadListener;
 import com.androidquery.auth.AccountHandle;
 import com.androidquery.util.AQUtility;
 import com.androidquery.util.BitmapCache;
@@ -940,7 +941,7 @@ private static boolean fadeIn(int animation, int source){
 
 	public static void async(Activity act, Context context, ImageView iv, String url, Object progress, AccountHandle ah, ImageOptions options, HttpHost proxy, String networkUrl){
 
-		async(act, context, iv, url, options.memCache, options.fileCache, options.targetWidth, options.fallback, options.preset, options.animation, options.ratio, options.anchor, progress, ah, options.policy, options.round, proxy, networkUrl);
+		async(act, context, iv, url, options.memCache, options.fileCache, options.targetWidth, options.fallback, options.preset, options.animation, options.ratio, options.anchor, progress, ah, options.policy, options.round, proxy,null, networkUrl);
 
 	}
 
@@ -953,7 +954,7 @@ public static void async(Activity act, Context context, ImageView iv, String url
 	 *
 	 */
 
-	public static void async(Activity act, Context context, ImageView iv, String url, boolean memCache, boolean fileCache, int targetWidth, int fallbackId, Bitmap preset, int animation, float ratio, float anchor, Object progress, AccountHandle ah, int policy, int round, HttpHost proxy, String networkUrl){
+	public static void async(Activity act, Context context, ImageView iv, String url, boolean memCache, boolean fileCache, int targetWidth, int fallbackId, Bitmap preset, int animation, float ratio, float anchor, Object progress, AccountHandle ah, int policy, int round, HttpHost proxy, LoadListener loadlistener, String networkUrl){
 
 		Bitmap bm = null;
 
@@ -967,7 +968,7 @@ public static void async(Activity act, Context context, ImageView iv, String url
 			setBmAnimate(iv, bm, preset, fallbackId, animation, ratio, anchor, AjaxStatus.MEMORY);
 		}else{
 			BitmapAjaxCallback cb = new BitmapAjaxCallback();			
-			cb.url(url).imageView(iv).memCache(memCache).fileCache(fileCache).targetWidth(targetWidth).fallback(fallbackId).preset(preset).animation(animation).ratio(ratio).anchor(anchor).progress(progress).auth(ah).policy(policy).round(round).networkUrl(networkUrl);
+			cb.url(url).imageView(iv).memCache(memCache).fileCache(fileCache).targetWidth(targetWidth).fallback(fallbackId).preset(preset).animation(animation).ratio(ratio).anchor(anchor).progress(progress).auth(ah).policy(policy).round(round).load(loadlistener).networkUrl(networkUrl);
 			if(proxy != null){
 				cb.proxy(proxy.getHostName(), proxy.getPort());
 			}

src/com/androidquery/util/AQUtility.java

@@ -50,6 +50,7 @@
 import android.view.animation.AlphaAnimation;
 
 import com.androidquery.AQuery;
+import com.androidquery.AbstractAQuery.LoadListener;
 
 /**
  * Utility methods. Warning: Methods might changed in future versions.
@@ -390,6 +391,10 @@ public static void copy(InputStream in, OutputStream out) throws IOException {
     }
 
     public static void copy(InputStream in, OutputStream out, int max, Progress progress) throws IOException {
+	copy(in, out, max, progress, null);    	
+    }
+
+     public static void copy(InputStream in, OutputStream out, int max, Progress progress, LoadListener loadListener) throws IOException {
 
     	if(progress != null){
     		progress.reset();
@@ -398,7 +403,12 @@ public static void copy(InputStream in, OutputStream out, int max, Progress prog
 
     	byte[] b = new byte[IO_BUFFER_SIZE];
         int read;
+        int count = max;
         while((read = in.read(b)) != -1){
+            if(loadListener != null){
+        	count = count - read;
+            	loadListener.onLoadProgress(count, max);
+            }
             out.write(b, 0, read);
             if(progress != null){
             	progress.increment(read);