1.修改Android RAImage占位图。

ApexDrivers/raimage/src/main/java/com/usai/redant/raimage/MainActivity.java

@@ -9,9 +9,13 @@ import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.SharedPreferences;
+import android.content.res.Resources;
 import android.database.Cursor;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
+import android.graphics.Shader;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.Drawable;
 import android.net.ConnectivityManager;
 import android.net.NetworkInfo;
 import android.net.Uri;
@@ -719,6 +723,10 @@ public class MainActivity extends AppCompatActivity
 
     protected void initView() {
         thumbsImageView = (ImageView)findViewById(R.id.photo_iv);
+
+        thumbsImageView.setBackground(mosaicBitmap());
+        clearThumbnail();
+
         countTextView = (TextView)findViewById(R.id.photo_count_lb);
         pidval = (EditText)findViewById(R.id.barcode_et);
 
@@ -1149,13 +1157,13 @@ public class MainActivity extends AppCompatActivity
                 if(thumbBitmap!=null)
                     thumbsImageView.setImageBitmap(thumbBitmap);
                 else
-                    thumbsImageView.setImageResource(R.drawable.no_pic);
+                    clearThumbnail();
                 Log.e(TAG, "recovery: photolist"+photoList.size());
             }
             else
 
             {
-                thumbsImageView.setImageResource(R.drawable.no_pic);
+                clearThumbnail();
             }
 
 
@@ -1606,7 +1614,7 @@ public class MainActivity extends AppCompatActivity
                 if (newVersion) {
                     thumbsImageView = this.thumbsImageView;
                 }
-                thumbsImageView.setImageResource(R.drawable.no_pic);
+                clearThumbnail();
                 thumbBitmap = null;
             } else {
                 thumbBitmap =  BitmapFactory.decodeFile(photoList.get(photoList.size() - 1));
@@ -1840,7 +1848,7 @@ public class MainActivity extends AppCompatActivity
         pidval.setText("");
         updateUploadButton();
 //		ImageView thumbsImageView = (ImageView) findViewById(R.id.ivThumbs);
-        thumbsImageView.setImageResource(R.drawable.no_pic);
+        clearThumbnail();
         thumbBitmap = null;
 //		TextView countTextView = (TextView) findViewById(R.id.tvPhotoCount);
         countTextView.setText("no photo");
@@ -1858,6 +1866,24 @@ public class MainActivity extends AppCompatActivity
 
     }
 
+    private void clearThumbnail() {
+        if (thumbsImageView != null) {
+            thumbsImageView.setImageDrawable(null);
+        }
+    }
+
+    private Drawable mosaicBitmap() {
+
+        Resources res = getResources();
+        Bitmap bmp = BitmapFactory.decodeResource(res, R.drawable.mosaic);
+
+        BitmapDrawable drawable = new BitmapDrawable(res,bmp);
+        drawable.setTileModeXY(Shader.TileMode.REPEAT , Shader.TileMode.REPEAT );
+        drawable.setDither(true);
+
+        return drawable;
+    }
+
     private final BroadcastReceiver	MainActivityReceiver	= new BroadcastReceiver()
     {