1.1.0

LampL · Feb 21, 2020 · 4fb2e42 · 4fb2e42
1 parent 805248a
commit 4fb2e42
Show file tree

Hide file tree

Showing 2 changed files with 45 additions and 24 deletions.
diff --git a/ImageloaderUtils/src/main/java/com/junl/utils/ImageloaderUtils/ImageCache.java b/ImageloaderUtils/src/main/java/com/junl/utils/ImageloaderUtils/ImageCache.java
@@ -0,0 +1,34 @@
+package com.junl.utils.ImageloaderUtils;
+
+import android.graphics.Bitmap;
+import android.util.LruCache;
+
+public class ImageCache {
+    LruCache<String, Bitmap> mImageCache;
+
+    public ImageCache() {
+        initImageCache();
+    }
+
+    private void initImageCache() {
+        //计算可使用的最大内存
+        final int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
+        //取四分之一的可用内存作为缓存
+        final int cacheSize = maxMemory / 4;
+
+        mImageCache = new LruCache<String, Bitmap>(cacheSize) {
+            @Override
+            protected int sizeOf(String key, Bitmap bitmap) {
+                return bitmap.getRowBytes() * bitmap.getHeight() / 1024;
+            }
+        };
+    }
+
+    public void put(String url, Bitmap bitmap) {
+        mImageCache.put(url, bitmap);
+    }
+
+    public Bitmap get(String url) {
+        return mImageCache.get(url);
+    }
+}
diff --git a/ImageloaderUtils/src/main/java/com/junl/utils/ImageloaderUtils/ImageLoader.java b/ImageloaderUtils/src/main/java/com/junl/utils/ImageloaderUtils/ImageLoader.java
@@ -14,31 +14,27 @@
 
 public class ImageLoader {
     //图片缓存
-    LruCache<String, Bitmap> mImageCache;
+    ImageCache mImageCache = new ImageCache();
     //线程池，线程池数量为 CPU 的数量
     ExecutorService mExecutorService = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
     //UI Handler
     Handler mUIHandler = new Handler(Looper.getMainLooper());
 
-    public ImageLoader() {
-        initImageCache();
-    }
-
-    private void initImageCache() {
-        //计算可使用的最大内存
-        final int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
-        //取四分之一的可用内存作为缓存
-        final int cacheSize = maxMemory / 4;
-
-        mImageCache = new LruCache<String, Bitmap>(cacheSize) {
+    private void updateImageView(final ImageView imageView, final Bitmap bitmap) {
+        mUIHandler.post(new Runnable() {
             @Override
-            protected int sizeOf(String key, Bitmap bitmap) {
-                return bitmap.getRowBytes() * bitmap.getHeight() / 1024;
+            public void run() {
+                imageView.setImageBitmap(bitmap);
             }
-        };
+        });
     }
 
     public void displayImage(final String url, final ImageView imageView) {
+        Bitmap bitmap = mImageCache.get(url);
+        if(bitmap != null){
+            imageView.setImageBitmap(bitmap);
+        }
+
         imageView.setTag(url);
         mExecutorService.submit(new Runnable() {
             @Override
@@ -55,15 +51,6 @@ public void run() {
         });
     }
 
-    private void updateImageView(final ImageView imageView, final Bitmap bitmap) {
-        mUIHandler.post(new Runnable() {
-            @Override
-            public void run() {
-                imageView.setImageBitmap(bitmap);
-            }
-        });
-    }
-
     public Bitmap downloadImage(String imageUrl) {
         Bitmap bitmap = null;
         try {