Move bitmap cache to App and update callsites

Author: mythz

src/AndroidClient/androidchat/src/main/java/servicestack/net/androidchat/App.java

@@ -2,9 +2,13 @@
 
 import android.app.Application;
 import android.content.Context;
+import android.graphics.Bitmap;
+import android.support.v4.util.LruCache;
 
 import net.servicestack.android.AndroidServerEventsClient;
 import net.servicestack.android.AndroidServiceClient;
+import net.servicestack.android.AsyncUtils;
+import net.servicestack.client.AsyncSuccess;
 
 /**
  * Created by mythz on 2/19/2017.
@@ -16,6 +20,11 @@ public class App extends Application {
     private Context context;
     private AndroidServerEventsClient serverEventsClient;
     private static App instance;
+    private LruCache bitmapCache = new LruCache(4 * 1024 * 1024) {// 4MiB
+        protected int sizeOf(String key, Bitmap value) {
+            return value.getByteCount();
+        }
+    };
 
     public App() {}
 
@@ -44,4 +53,21 @@ public AndroidServerEventsClient getServerEventsClient(){
     public AndroidServiceClient getServiceClient(){
         return serverEventsClient.getAndroidClient();
     }
+
+    public void readBitmap(final String url, final AsyncSuccess<Bitmap> success){
+        Bitmap cachedBitmap = (Bitmap)bitmapCache.get(url);
+        if (cachedBitmap != null){
+            success.success(cachedBitmap);
+            return;
+        }
+
+        AsyncUtils.readBitmap(url, imageBitmap -> {
+            bitmapCache.put(url, imageBitmap);
+            success.success(imageBitmap);
+        },
+        error -> {
+            error.printStackTrace();
+        });
+    }
+
 }

src/AndroidClient/androidchat/src/main/java/servicestack/net/androidchat/ChatCommandHandler.java

@@ -126,7 +126,7 @@ public void changeBackground(String message)
             ? message.substring(4, message.length() - 5)
             : message;
 
-        AsyncUtils.readBitmap(url, bitmap -> {
+        App.get().readBitmap(url, bitmap -> {
             ImageView chatBackground = (ImageView)parentActivity.findViewById(R.id.chat_background);
             parentActivity.runOnUiThread(() -> chatBackground.setImageBitmap(bitmap));
         });

src/AndroidClient/androidchat/src/main/java/servicestack/net/androidchat/Extensions.java

@@ -65,7 +65,7 @@ public static void updateUserProfile(ServerEventConnect connectMsg, MainActivity
             TextView txtUser = (TextView)activity.findViewById(R.id.txtUserName);
             txtUser.setText(connectMsg.getDisplayName());
 
-            AsyncUtils.readBitmap(connectMsg.getProfileUrl(), bitmap -> {
+            App.get().readBitmap(connectMsg.getProfileUrl(), bitmap -> {
                 ImageView imgProfile = (ImageView)activity.findViewById(R.id.imgProfile);
                 imgProfile.setImageBitmap(bitmap);
             });

src/AndroidClient/androidchat/src/main/java/servicestack/net/androidchat/MainActivity.java

@@ -141,18 +141,9 @@ protected void onCreate(Bundle savedInstanceState) {
         sendButton.setOnClickListener(this::onSendClick);
     }
 
-    static LruCache bitmapCache = new LruCache(4 * 1024 * 1024) {// 4MiB
-        protected int sizeOf(String key, Bitmap value) {
-            return value.getByteCount();
-        }
-    };
-
     private void InitDefaultBackground(final ImageView chatBackground){
         final String url = "https://servicestack.net/img/slide/image01.jpg";
-        AsyncUtils.readBitmap(url, imageBitmap -> {
-            bitmapCache.put(url, imageBitmap);
-            chatBackground.setImageBitmap(imageBitmap);
-        });
+        App.get().readBitmap(url, chatBackground::setImageBitmap);
     }
 
     public boolean onChannelClick(MenuItem menuItem)

src/AndroidClient/androidchat/src/main/java/servicestack/net/androidchat/MessageListViewAdapter.java

@@ -64,7 +64,7 @@ public View getView(int position, View convertView, ViewGroup parent) {
         label.setText(displayMessage);
 
         ImageView image = (ImageView)row.findViewById(R.id.imgUser);
-        AsyncUtils.readBitmap(profileUrl, image::setImageBitmap);
+        App.get().readBitmap(profileUrl, image::setImageBitmap);
         return row;
     }