make bitmap worker task static

7 files changed, 68 insertions, 37 deletions

diff --git a/src/main/java/de/pixart/messenger/ui/XmppActivity.java b/src/main/java/de/pixart/messenger/ui/XmppActivity.java
index 87e89ecff..5b714984b 100644
--- a/src/main/java/de/pixart/messenger/ui/XmppActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/XmppActivity.java
@@ -1122,7 +1122,7 @@ public abstract class XmppActivity extends ActionBarActivity {
             if (cancelPotentialWork(message, imageView)) {
                 imageView.setBackgroundColor(0xff333333);
                 imageView.setImageDrawable(null);
-                final BitmapWorkerTask task = new BitmapWorkerTask(this, imageView);
+                final BitmapWorkerTask task = new BitmapWorkerTask(imageView);
                 final AsyncDrawable asyncDrawable = new AsyncDrawable(
                         getResources(), null, task);
                 imageView.setImageDrawable(asyncDrawable);
@@ -1177,11 +1177,9 @@ public abstract class XmppActivity extends ActionBarActivity {
 
     static class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
         private final WeakReference<ImageView> imageViewReference;
-        private final WeakReference<XmppActivity> activity;
         private Message message = null;
 
-        private BitmapWorkerTask(XmppActivity activity, ImageView imageView) {
-            this.activity = new WeakReference<>(activity);
+        private BitmapWorkerTask(ImageView imageView) {
             this.imageViewReference = new WeakReference<>(imageView);
         }
 
@@ -1192,7 +1190,7 @@ public abstract class XmppActivity extends ActionBarActivity {
             }
             message = params[0];
             try {
-                XmppActivity activity = this.activity.get();
+                final XmppActivity activity = find(imageViewReference);
                 if (activity != null && activity.xmppConnectionService != null) {
                     return activity.xmppConnectionService.getFileBackend().getThumbnail(message, (int) (activity.metrics.density * 288), false);
                 } else {
@@ -1230,6 +1228,18 @@ public abstract class XmppActivity extends ActionBarActivity {
         }
     }
 
+    public static XmppActivity find(WeakReference<ImageView> viewWeakReference) {
+        final View view = viewWeakReference.get();
+        if (view == null) {
+            return null;
+        }
+        final Context context = view.getContext();
+        if (context instanceof XmppActivity) {
+            return (XmppActivity) context;
+        }
+        return null;
+    }
+
     protected boolean installFromUnknownSourceAllowed() {
         boolean installFromUnknownSource = false;
         final PackageManager packageManager = this.getPackageManager();
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/AccountAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/AccountAdapter.java
index e060d8828..2624828a8 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/AccountAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/AccountAdapter.java
@@ -97,17 +97,21 @@ public class AccountAdapter extends ArrayAdapter<Account> {
         }
     }
 
-    class BitmapWorkerTask extends AsyncTask<Account, Void, Bitmap> {
+    private static class BitmapWorkerTask extends AsyncTask<Account, Void, Bitmap> {
         private final WeakReference<ImageView> imageViewReference;
         private Account account = null;
 
-        public BitmapWorkerTask(ImageView imageView) {
+        BitmapWorkerTask(ImageView imageView) {
             imageViewReference = new WeakReference<>(imageView);
         }
 
         @Override
         protected Bitmap doInBackground(Account... params) {
             this.account = params[0];
+            final XmppActivity activity = XmppActivity.find(imageViewReference);
+            if (activity == null) {
+                return null;
+            }
             return activity.avatarService().get(this.account, activity.getPixel(48), isCancelled());
         }
 
@@ -123,7 +127,7 @@ public class AccountAdapter extends ArrayAdapter<Account> {
         }
     }
 
-    public void loadAvatar(Account account, ImageView imageView) {
+    private void loadAvatar(Account account, ImageView imageView) {
         if (cancelPotentialWork(account, imageView)) {
             final Bitmap bm = activity.avatarService().get(account, activity.getPixel(48), true);
             if (bm != null) {
@@ -149,7 +153,7 @@ public class AccountAdapter extends ArrayAdapter<Account> {
         void onClickTglAccountState(Account account, boolean state);
     }
 
-    public static boolean cancelPotentialWork(Account account, ImageView imageView) {
+    private static boolean cancelPotentialWork(Account account, ImageView imageView) {
         final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
 
         if (bitmapWorkerTask != null) {
@@ -177,12 +181,12 @@ public class AccountAdapter extends ArrayAdapter<Account> {
     static class AsyncDrawable extends BitmapDrawable {
         private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
 
-        public AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
+        AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
             super(res, bitmap);
             bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
         }
 
-        public BitmapWorkerTask getBitmapWorkerTask() {
+        BitmapWorkerTask getBitmapWorkerTask() {
             return bitmapWorkerTaskReference.get();
         }
     }
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/ConversationAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/ConversationAdapter.java
index a60631523..e97a8d407 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/ConversationAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/ConversationAdapter.java
@@ -390,33 +390,38 @@ public class ConversationAdapter extends RecyclerView.Adapter<ConversationAdapte
     static class AsyncDrawable extends BitmapDrawable {
         private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
 
-        public AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
+        AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
             super(res, bitmap);
             bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
         }
 
-        public BitmapWorkerTask getBitmapWorkerTask() {
+        BitmapWorkerTask getBitmapWorkerTask() {
             return bitmapWorkerTaskReference.get();
         }
     }
 
-    class BitmapWorkerTask extends AsyncTask<Conversation, Void, Bitmap> {
+    static class BitmapWorkerTask extends AsyncTask<Conversation, Void, Bitmap> {
         private final WeakReference<ImageView> imageViewReference;
         private Conversation conversation = null;
 
-        public BitmapWorkerTask(ImageView imageView) {
+        BitmapWorkerTask(ImageView imageView) {
             imageViewReference = new WeakReference<>(imageView);
         }
 
+
         @Override
         protected Bitmap doInBackground(Conversation... params) {
             this.conversation = params[0];
+            final XmppActivity activity = XmppActivity.find(imageViewReference);
+            if (activity == null) {
+                return null;
+            }
             return activity.avatarService().get(this.conversation, activity.getPixel(56), isCancelled());
         }
 
         @Override
         protected void onPostExecute(Bitmap bitmap) {
-            if (bitmap != null) {
+            if (bitmap != null && !isCancelled()) {
                 final ImageView imageView = imageViewReference.get();
                 if (imageView != null) {
                     imageView.setImageBitmap(bitmap);
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/ListItemAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/ListItemAdapter.java
index e99353f13..71f8aaa34 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/ListItemAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/ListItemAdapter.java
@@ -133,17 +133,21 @@ public class ListItemAdapter extends ArrayAdapter<ListItem> {
         void onTagClicked(String tag);
     }
 
-    class BitmapWorkerTask extends AsyncTask<ListItem, Void, Bitmap> {
+    private static class BitmapWorkerTask extends AsyncTask<ListItem, Void, Bitmap> {
         private final WeakReference<ImageView> imageViewReference;
         private ListItem item = null;
 
-        public BitmapWorkerTask(ImageView imageView) {
+        BitmapWorkerTask(ImageView imageView) {
             imageViewReference = new WeakReference<>(imageView);
         }
 
         @Override
         protected Bitmap doInBackground(ListItem... params) {
             this.item = params[0];
+            final XmppActivity activity = XmppActivity.find(imageViewReference);
+            if (activity == null) {
+                return null;
+            }
             return activity.avatarService().get(this.item, activity.getPixel(56), isCancelled());
         }
 
@@ -159,7 +163,7 @@ public class ListItemAdapter extends ArrayAdapter<ListItem> {
         }
     }
 
-    public void loadAvatar(ListItem item, ImageView imageView) {
+    private void loadAvatar(ListItem item, ImageView imageView) {
         if (cancelPotentialWork(item, imageView)) {
             final Bitmap bm = activity.avatarService().get(item, activity.getPixel(48), true);
             if (bm != null) {
@@ -181,7 +185,7 @@ public class ListItemAdapter extends ArrayAdapter<ListItem> {
         }
     }
 
-    public static boolean cancelPotentialWork(ListItem item, ImageView imageView) {
+    private static boolean cancelPotentialWork(ListItem item, ImageView imageView) {
         final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
 
         if (bitmapWorkerTask != null) {
@@ -209,12 +213,12 @@ public class ListItemAdapter extends ArrayAdapter<ListItem> {
     static class AsyncDrawable extends BitmapDrawable {
         private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
 
-        public AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
+        AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
             super(res, bitmap);
             bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
         }
 
-        public BitmapWorkerTask getBitmapWorkerTask() {
+        BitmapWorkerTask getBitmapWorkerTask() {
             return bitmapWorkerTaskReference.get();
         }
     }
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/MediaAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/MediaAdapter.java
index 8b8c05d05..50460c0f1 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/MediaAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/MediaAdapter.java
@@ -89,7 +89,7 @@ public class MediaAdapter extends RecyclerView.Adapter<MediaAdapter.MediaViewHol
         return attr;
     }
 
-    public static void renderPreview(Context context, Attachment attachment, ImageView imageView) {
+    static void renderPreview(Context context, Attachment attachment, ImageView imageView) {
         imageView.setBackgroundColor(StyledAttributes.getColor(context, R.attr.color_background_tertiary));
         imageView.setImageAlpha(Math.round(StyledAttributes.getFloat(context, R.attr.icon_alpha) * 255));
         imageView.setImageDrawable(StyledAttributes.getDrawable(context, getImageAttr(attachment)));
@@ -161,7 +161,7 @@ public class MediaAdapter extends RecyclerView.Adapter<MediaAdapter.MediaViewHol
             } else {
                 imageView.setBackgroundColor(0xff333333);
                 imageView.setImageDrawable(null);
-                final BitmapWorkerTask task = new BitmapWorkerTask(imageView);
+                final BitmapWorkerTask task = new BitmapWorkerTask(mediaSize, imageView);
                 final AsyncDrawable asyncDrawable = new AsyncDrawable(activity.getResources(), null, task);
                 imageView.setImageDrawable(asyncDrawable);
                 try {
@@ -200,17 +200,23 @@ public class MediaAdapter extends RecyclerView.Adapter<MediaAdapter.MediaViewHol
         }
     }
 
-    class BitmapWorkerTask extends AsyncTask<Attachment, Void, Bitmap> {
+    private static class BitmapWorkerTask extends AsyncTask<Attachment, Void, Bitmap> {
         private final WeakReference<ImageView> imageViewReference;
         private Attachment attachment = null;
+        private final int mediaSize;
 
-        BitmapWorkerTask(ImageView imageView) {
+        BitmapWorkerTask(int mediaSize, ImageView imageView) {
+            this.mediaSize = mediaSize;
             imageViewReference = new WeakReference<>(imageView);
         }
 
         @Override
         protected Bitmap doInBackground(Attachment... params) {
             this.attachment = params[0];
+            final XmppActivity activity = XmppActivity.find(imageViewReference);
+            if (activity == null) {
+                return null;
+            }
             return activity.xmppConnectionService.getFileBackend().getPreviewForUri(this.attachment, mediaSize, false);
         }
 
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/MediaPreviewAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/MediaPreviewAdapter.java
index 64cb63439..2c7ce7471 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/MediaPreviewAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/MediaPreviewAdapter.java
@@ -158,7 +158,7 @@ public class MediaPreviewAdapter extends RecyclerView.Adapter<MediaPreviewAdapte
         }
     }
 
-    class BitmapWorkerTask extends AsyncTask<Attachment, Void, Bitmap> {
+    private static class BitmapWorkerTask extends AsyncTask<Attachment, Void, Bitmap> {
         private final WeakReference<ImageView> imageViewReference;
         private Attachment attachment = null;
 
@@ -168,14 +168,12 @@ public class MediaPreviewAdapter extends RecyclerView.Adapter<MediaPreviewAdapte
 
         @Override
         protected Bitmap doInBackground(Attachment... params) {
-            Activity activity = conversationFragment.getActivity();
-            if (activity instanceof XmppActivity) {
-                final XmppActivity xmppActivity = (XmppActivity) activity;
-                this.attachment = params[0];
-                return xmppActivity.xmppConnectionService.getFileBackend().getPreviewForUri(this.attachment, Math.round(xmppActivity.getResources().getDimension(R.dimen.media_preview_size)), false);
-            } else {
+            this.attachment = params[0];
+            final XmppActivity activity = XmppActivity.find(imageViewReference);
+            if (activity == null) {
                 return null;
             }
+            return activity.xmppConnectionService.getFileBackend().getPreviewForUri(this.attachment, Math.round(activity.getResources().getDimension(R.dimen.media_preview_size)), false);
         }
 
         @Override
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/MessageAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/MessageAdapter.java
index 9d7624e79..f89d1a7c9 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/MessageAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/MessageAdapter.java
@@ -1123,7 +1123,7 @@ public class MessageAdapter extends ArrayAdapter<Message> implements CopyTextVie
         ViewUtil.view(activity, file);
     }
 
-    public void showLocation(Message message) {
+    private void showLocation(Message message) {
         for (Intent intent : GeoHelper.createGeoIntentsFromMessage(this.getContext(), message)) {
             if (intent.resolveActivity(getContext().getPackageManager()) != null) {
                 getContext().startActivity(intent);
@@ -1139,7 +1139,7 @@ public class MessageAdapter extends ArrayAdapter<Message> implements CopyTextVie
         this.mIndicateReceived = p.getBoolean("indicate_received", activity.getResources().getBoolean(R.bool.indicate_received));
     }
 
-    public void loadAvatar(Message message, ImageView imageView, int size) {
+    private void loadAvatar(Message message, ImageView imageView, int size) {
         if (cancelPotentialWork(message, imageView)) {
             final Bitmap bm = activity.avatarService().get(message, size, true);
             if (bm != null) {
@@ -1260,12 +1260,12 @@ public class MessageAdapter extends ArrayAdapter<Message> implements CopyTextVie
         public void onDestroyActionMode(ActionMode mode) {}
     }
 
-    class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
+    private static class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
         private final WeakReference<ImageView> imageViewReference;
         private final int size;
         private Message message = null;
 
-        public BitmapWorkerTask(ImageView imageView, int size) {
+        BitmapWorkerTask(ImageView imageView, int size) {
             imageViewReference = new WeakReference<>(imageView);
             this.size = size;
         }
@@ -1273,6 +1273,10 @@ public class MessageAdapter extends ArrayAdapter<Message> implements CopyTextVie
         @Override
         protected Bitmap doInBackground(Message... params) {
             this.message = params[0];
+            final XmppActivity activity = XmppActivity.find(imageViewReference);
+            if (activity == null) {
+                return null;
+            }
             return activity.avatarService().get(this.message, size, isCancelled());
         }