version:1.1

fix:
update:迁移到UIUISOS

app/src/main/java/com/uiuios/aios/disklrucache/Utils.java

@@ -0,0 +1,101 @@
+package com.uiuios.aios.disklrucache;
+
+import android.content.Context;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Canvas;
+import android.graphics.PixelFormat;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.Drawable;
+
+import java.io.ByteArrayOutputStream;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+public class Utils {
+    public static int getAppVersion(Context context) {
+        try {
+            PackageInfo info = context.getPackageManager().getPackageInfo(context.getPackageName(), 0);
+            return info.versionCode;
+        } catch (PackageManager.NameNotFoundException e) {
+            e.printStackTrace();
+        }
+        return 1;
+    }
+
+
+    public static String hashKeyForDisk(String key) {
+        String cacheKey;
+        try {
+            final MessageDigest mDigest = MessageDigest.getInstance("MD5");
+            mDigest.update(key.getBytes());
+            cacheKey = bytesToHexString(mDigest.digest());
+        } catch (NoSuchAlgorithmException e) {
+            cacheKey = String.valueOf(key.hashCode());
+        }
+        return cacheKey;
+    }
+
+    public static String bytesToHexString(byte[] bytes) {
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < bytes.length; i++) {
+            String hex = Integer.toHexString(0xFF & bytes[i]);
+            if (hex.length() == 1) {
+                sb.append('0');
+            }
+            sb.append(hex);
+        }
+        return sb.toString();
+    }
+
+    public static byte[] bitmap2Bytes(Bitmap bm) {
+        if (bm == null) {
+            return null;
+        }
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        bm.compress(Bitmap.CompressFormat.PNG, 100, baos);
+        return baos.toByteArray();
+    }
+
+    public static Bitmap bytes2Bitmap(byte[] bytes) {
+        return BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
+    }
+
+
+    /**
+     * Drawable → Bitmap
+     */
+    public static Bitmap drawable2Bitmap(Drawable drawable) {
+        if (drawable == null) {
+            return null;
+        }
+        // 取 drawable 的长宽
+        int w = drawable.getIntrinsicWidth();
+        int h = drawable.getIntrinsicHeight();
+        // 取 drawable 的颜色格式
+        Bitmap.Config config = drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565;
+        // 建立对应 bitmap
+        Bitmap bitmap = Bitmap.createBitmap(w, h, config);
+        // 建立对应 bitmap 的画布
+        Canvas canvas = new Canvas(bitmap);
+        drawable.setBounds(0, 0, w, h);
+        // 把 drawable 内容画到画布中
+        drawable.draw(canvas);
+        return bitmap;
+    }
+
+    /*
+         * Bitmap → Drawable
+		 */
+    @SuppressWarnings("deprecation")
+    public static Drawable bitmap2Drawable(Bitmap bm) {
+        if (bm == null) {
+            return null;
+        }
+        BitmapDrawable bd = new BitmapDrawable(bm);
+        bd.setTargetDensity(bm.getDensity());
+        return new BitmapDrawable(bm);
+    }
+}