优化Bitmap配置

Author: wyouflf

library/src/com/lidroid/xutils/BitmapUtils.java

@@ -60,8 +60,8 @@ public BitmapUtils(Context context, String diskCachePath) {
             throw new IllegalArgumentException("context may not be null");
         }
 
-        this.context = context;
-        globalConfig = new BitmapGlobalConfig(context, diskCachePath);
+        this.context = context.getApplicationContext();
+        globalConfig = BitmapGlobalConfig.getInstance(this.context, diskCachePath);
         defaultDisplayConfig = new BitmapDisplayConfig();
     }
 
@@ -199,11 +199,6 @@ public BitmapUtils configBitmapCacheListener(BitmapCacheListener listener) {
         return this;
     }
 
-    public BitmapUtils configGlobalConfig(BitmapGlobalConfig globalConfig) {
-        this.globalConfig = globalConfig;
-        return this;
-    }
-
     ////////////////////////// display ////////////////////////////////////
 
     public <T extends View> void display(T container, String uri) {

library/src/com/lidroid/xutils/bitmap/BitmapGlobalConfig.java

@@ -21,12 +21,14 @@
 import com.lidroid.xutils.bitmap.core.BitmapCache;
 import com.lidroid.xutils.bitmap.download.DefaultDownloader;
 import com.lidroid.xutils.bitmap.download.Downloader;
+import com.lidroid.xutils.cache.FileNameGenerator;
 import com.lidroid.xutils.task.Priority;
-import com.lidroid.xutils.util.LogUtils;
-import com.lidroid.xutils.util.OtherUtils;
 import com.lidroid.xutils.task.PriorityAsyncTask;
-import com.lidroid.xutils.cache.FileNameGenerator;
 import com.lidroid.xutils.task.PriorityExecutor;
+import com.lidroid.xutils.util.LogUtils;
+import com.lidroid.xutils.util.OtherUtils;
+
+import java.util.HashMap;
 
 /**
  * Author: wyouflf
@@ -60,27 +62,40 @@ public class BitmapGlobalConfig {
     private BitmapCacheListener bitmapCacheListener;
 
     private Context mContext;
+    private final static HashMap<String, BitmapGlobalConfig> configMap = new HashMap<String, BitmapGlobalConfig>(1);
 
     /**
      * @param context
      * @param diskCachePath If null, use default appCacheDir+"/xBitmapCache"
      */
-    public BitmapGlobalConfig(Context context, String diskCachePath) {
+    private BitmapGlobalConfig(Context context, String diskCachePath) {
         if (context == null) throw new IllegalArgumentException("context may not be null");
         this.mContext = context;
         this.diskCachePath = diskCachePath;
         initBitmapCache();
     }
 
+    public static BitmapGlobalConfig getInstance(Context context, String diskCachePath) {
+
+        if (TextUtils.isEmpty(diskCachePath)) {
+            diskCachePath = OtherUtils.getDiskCacheDir(context, "xBitmapCache");
+        }
+
+        if (configMap.containsKey(diskCachePath)) {
+            return configMap.get(diskCachePath);
+        } else {
+            BitmapGlobalConfig config = new BitmapGlobalConfig(context, diskCachePath);
+            configMap.put(diskCachePath, config);
+            return config;
+        }
+    }
+
     private void initBitmapCache() {
         new BitmapCacheManagementTask().execute(BitmapCacheManagementTask.MESSAGE_INIT_MEMORY_CACHE);
         new BitmapCacheManagementTask().execute(BitmapCacheManagementTask.MESSAGE_INIT_DISK_CACHE);
     }
 
     public String getDiskCachePath() {
-        if (TextUtils.isEmpty(diskCachePath)) {
-            diskCachePath = OtherUtils.getDiskCacheDir(mContext, "xBitmapCache");
-        }
         return diskCachePath;
     }