[Android] Improve images handling (#109)

* Fixed the inSampleSize calculations based on total pixels (double inSampleSize size -> 4x less pixels)

* Fixed the inSampleSize calculations when only hight or widths is requested.
Added rotation and scaling while processing images.
Added keepAspectRatio property for further flexibility and accuracy.

* Fixed the ExifInterface creation based on the API level.

* Handle file not found in the native images handling.

* chore: apply PR comments

android/widgets/src/main/java/org/nativescript/widgets/BorderDrawable.java

@@ -261,7 +261,7 @@ public class BorderDrawable extends ColorDrawable implements BitmapOwner {
             Fetcher fetcher = Fetcher.getInstance(context);
             // TODO: Implement option to pass load-mode like in ImageView class.
             boolean loadAsync = backgroundImageUri.startsWith("http");
-            fetcher.loadImage(backgroundImageUri, this, 0, 0, true, loadAsync, null);
+            fetcher.loadImage(backgroundImageUri, this, 0, 0, false, true, loadAsync, null);
         }
     }
 

android/widgets/src/main/java/org/nativescript/widgets/Image/Fetcher.java

@@ -19,10 +19,13 @@ package org.nativescript.widgets.image;
 import android.annotation.TargetApi;
 import android.content.Context;
 import android.content.res.Resources;
+import android.graphics.Matrix;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
+import android.media.ExifInterface;
 import android.os.Build;
 import android.util.Log;
+import android.util.TypedValue;
 
 import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
@@ -31,7 +34,6 @@ import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.FileDescriptor;
 import java.io.FileInputStream;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
@@ -156,7 +158,7 @@ public class Fetcher extends Worker {
      * @param data The data to load the bitmap, in this case, a regular http URL
      * @return The downloaded and resized bitmap
      */
-    private Bitmap processHttp(String data, int decodeWidth, int decodeHeight) {
+    private Bitmap processHttp(String data, int decodeWidth, int decodeHeight, boolean keepAspectRatio) {
         final String key = Cache.hashKeyForDisk(data);
         FileDescriptor fileDescriptor = null;
         FileInputStream fileInputStream = null;
@@ -179,8 +181,7 @@ public class Fetcher extends Worker {
                         }
                         DiskLruCache.Editor editor = mHttpDiskCache.edit(key);
                         if (editor != null) {
-                            if (downloadUrlToStream(data,
-                                    editor.newOutputStream(DISK_CACHE_INDEX))) {
+                            if (downloadUrlToStream(data, editor.newOutputStream(DISK_CACHE_INDEX))) {
                                 editor.commit();
                             } else {
                                 editor.abort();
@@ -189,8 +190,7 @@ public class Fetcher extends Worker {
                         snapshot = mHttpDiskCache.get(key);
                     }
                     if (snapshot != null) {
-                        fileInputStream =
-                                (FileInputStream) snapshot.getInputStream(DISK_CACHE_INDEX);
+                        fileInputStream = (FileInputStream) snapshot.getInputStream(DISK_CACHE_INDEX);
                         fileDescriptor = fileInputStream.getFD();
                     }
                 } catch (IOException e) {
@@ -210,8 +210,8 @@ public class Fetcher extends Worker {
 
         Bitmap bitmap = null;
         if (fileDescriptor != null) {
-            bitmap = decodeSampledBitmapFromDescriptor(fileDescriptor, decodeWidth,
-                    decodeHeight, getCache());
+            bitmap = decodeSampledBitmapFromDescriptor(fileDescriptor, decodeWidth, decodeHeight, keepAspectRatio,
+                    getCache());
         }
         if (fileInputStream != null) {
             try {
@@ -222,14 +222,15 @@ public class Fetcher extends Worker {
         return bitmap;
     }
 
-    private Bitmap processHttpNoCache(String data, int decodeWidth, int decodeHeight) {
+    private Bitmap processHttpNoCache(String data, int decodeWidth, int decodeHeight, boolean keepAspectRatio) {
         ByteArrayOutputStreamInternal outputStream = null;
         Bitmap bitmap = null;
 
         try {
             outputStream = new ByteArrayOutputStreamInternal();
             if (downloadUrlToStream(data, outputStream)) {
-                bitmap = decodeSampledBitmapFromByteArray(outputStream.getBuffer(), decodeWidth, decodeHeight, getCache());
+                bitmap = decodeSampledBitmapFromByteArray(outputStream.getBuffer(), decodeWidth, decodeHeight,
+                        keepAspectRatio, getCache());
             }
         } catch (IllegalStateException e) {
             Log.e(TAG, "processHttpNoCache - " + e);
@@ -246,28 +247,30 @@ public class Fetcher extends Worker {
     }
 
     @Override
-    protected Bitmap processBitmap(String uri, int decodeWidth, int decodeHeight, boolean useCache) {
+    protected Bitmap processBitmap(String uri, int decodeWidth, int decodeHeight, boolean keepAspectRatio,
+            boolean useCache) {
         if (debuggable > 0) {
             Log.v(TAG, "process: " + uri);
         }
 
         if (uri.startsWith(FILE_PREFIX)) {
             String filename = uri.substring(FILE_PREFIX.length());
-            return decodeSampledBitmapFromFile(filename, decodeWidth, decodeHeight, getCache());
+            return decodeSampledBitmapFromFile(filename, decodeWidth, decodeHeight, keepAspectRatio, getCache());
         } else if (uri.startsWith(RESOURCE_PREFIX)) {
             String resPath = uri.substring(RESOURCE_PREFIX.length());
             int resId = mResources.getIdentifier(resPath, "drawable", mPackageName);
             if (resId > 0) {
-                return decodeSampledBitmapFromResource(mResources, resId, decodeWidth, decodeHeight, getCache());
+                return decodeSampledBitmapFromResource(mResources, resId, decodeWidth, decodeHeight, keepAspectRatio,
+                        getCache());
             } else {
                 Log.v(TAG, "Missing Image with resourceID: " + uri);
                 return null;
             }
         } else {
             if (useCache && mHttpDiskCache != null) {
-                return processHttp(uri, decodeWidth, decodeHeight);
+                return processHttp(uri, decodeWidth, decodeHeight, keepAspectRatio);
             } else {
-                return processHttpNoCache(uri, decodeWidth, decodeHeight);
+                return processHttpNoCache(uri, decodeWidth, decodeHeight, keepAspectRatio);
             }
         }
     }
@@ -342,8 +345,8 @@ public class Fetcher extends Worker {
      * @return A bitmap sampled down from the original with the same aspect ratio and dimensions
      *         that are equal to or greater than the requested width and height
      */
-    public static Bitmap decodeSampledBitmapFromResource(Resources res, int resId,
-                                                         int reqWidth, int reqHeight, Cache cache) {
+    public static Bitmap decodeSampledBitmapFromResource(Resources res, int resId, int reqWidth, int reqHeight,
+            boolean keepAspectRatio, Cache cache) {
 
         // BEGIN_INCLUDE (read_bitmap_dimensions)
         // First decode with inJustDecodeBounds=true to check dimensions
@@ -351,14 +354,7 @@ public class Fetcher extends Worker {
         options.inJustDecodeBounds = true;
         BitmapFactory.decodeResource(res, resId, options);
 
-        // If requested width/height were not specified - decode in full size.
-        if (reqWidth > 0 && reqHeight > 0) {
-            // Calculate inSampleSize
-            options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
-        }
-        else {
-            options.inSampleSize = 1;
-        }
+        options.inSampleSize = calculateInSampleSize(options.outWidth, options.outHeight, reqWidth, reqHeight);
 
         // END_INCLUDE (read_bitmap_dimensions)
 
@@ -369,7 +365,74 @@ public class Fetcher extends Worker {
 
         // Decode bitmap with inSampleSize set
         options.inJustDecodeBounds = false;
-        return BitmapFactory.decodeResource(res, resId, options);
+        Bitmap bitmap = null;
+        InputStream is = null;
+
+        try {
+            final TypedValue value = new TypedValue();
+            is = res.openRawResource(resId, value);
+
+            bitmap = BitmapFactory.decodeResourceStream(res, value, is, null, options);
+        } catch (Exception e) {
+            /*  do nothing.
+                If the exception happened on open, bm will be null.
+                If it happened on close, bm is still valid.
+            */
+        }
+
+        if (bitmap == null && options != null && options.inBitmap != null) {
+            throw new IllegalArgumentException("Problem decoding into existing bitmap");
+        }
+
+        ExifInterface ei = getExifInterface(is);
+
+        return scaleAndRotateBitmap(bitmap, ei, reqWidth, reqHeight, keepAspectRatio);
+    }
+
+    @TargetApi(Build.VERSION_CODES.N)
+    private static ExifInterface getExifInterface(InputStream is) {
+        ExifInterface ei = null;
+        try {
+            if (Utils.hasN()) {
+                ei = new ExifInterface(is);
+            }
+        } catch (final Exception e) {
+            Log.e(TAG, "Error in reading bitmap - " + e);
+        } finally {
+            if (is != null) {
+                try {
+                    is.close();
+                } catch (IOException e) {
+                }
+            }
+        }
+
+        return ei;
+    }
+
+    @TargetApi(Build.VERSION_CODES.N)
+    private static ExifInterface getExifInterface(FileDescriptor fd) {
+        ExifInterface ei = null;
+        try {
+            if (Utils.hasN()) {
+                ei = new ExifInterface(fd);
+            }
+        } catch (final Exception e) {
+            Log.e(TAG, "Error in reading bitmap - " + e);
+        }
+
+        return ei;
+    }
+
+    private static ExifInterface getExifInterface(String fileName) {
+        ExifInterface ei = null;
+        try {
+            ei = new ExifInterface(fileName);
+        } catch (final Exception e) {
+            Log.e(TAG, "Error in reading bitmap - " + e);
+        }
+
+        return ei;
     }
 
     /**
@@ -382,22 +445,15 @@ public class Fetcher extends Worker {
      * @return A bitmap sampled down from the original with the same aspect ratio and dimensions
      *         that are equal to or greater than the requested width and height
      */
-    public static Bitmap decodeSampledBitmapFromFile(String filename,
-                                                     int reqWidth, int reqHeight, Cache cache) {
+    public static Bitmap decodeSampledBitmapFromFile(String fileName, int reqWidth, int reqHeight,
+            boolean keepAspectRatio, Cache cache) {
 
         // First decode with inJustDecodeBounds=true to check dimensions
         final BitmapFactory.Options options = new BitmapFactory.Options();
         options.inJustDecodeBounds = true;
-        BitmapFactory.decodeFile(filename, options);
+        BitmapFactory.decodeFile(fileName, options);
 
-        // If requested width/height were not specified - decode in full size.
-        if (reqWidth > 0 && reqHeight > 0) {
-            // Calculate inSampleSize
-            options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
-        }
-        else {
-            options.inSampleSize = 1;
-        }
+        options.inSampleSize = calculateInSampleSize(options.outWidth, options.outHeight, reqWidth, reqHeight);
 
         // If we're running on Honeycomb or newer, try to use inBitmap
         if (Utils.hasHoneycomb()) {
@@ -406,7 +462,68 @@ public class Fetcher extends Worker {
 
         // Decode bitmap with inSampleSize set
         options.inJustDecodeBounds = false;
-        return BitmapFactory.decodeFile(filename, options);
+
+        final Bitmap bitmap = BitmapFactory.decodeFile(fileName, options);
+        ExifInterface ei = getExifInterface(fileName);
+
+        return scaleAndRotateBitmap(bitmap, ei, reqWidth, reqHeight, keepAspectRatio);
+    }
+
+    private static Bitmap scaleAndRotateBitmap(Bitmap bitmap, ExifInterface ei, int reqWidth, int reqHeight,
+            boolean keepAspectRatio) {
+        if (bitmap == null) {
+            return null;
+        }
+
+        int sourceWidth = bitmap.getWidth();
+        int sourceHeight = bitmap.getHeight();
+        reqWidth = reqWidth > 0 ? reqWidth : sourceWidth;
+        reqHeight = reqHeight > 0 ? reqHeight : sourceHeight;
+
+        // scale
+        if (reqWidth != sourceWidth || reqHeight != sourceHeight) {
+            if (keepAspectRatio) {
+                double widthCoef = (double) sourceWidth / (double) reqWidth;
+                double heightCoef = (double) sourceHeight / (double) reqHeight;
+                double aspectCoef = widthCoef > heightCoef ? widthCoef : heightCoef;
+
+                reqWidth = (int) Math.floor(sourceWidth / aspectCoef);
+                reqHeight = (int) Math.floor(sourceHeight / aspectCoef);
+            }
+
+            bitmap = Bitmap.createScaledBitmap(bitmap, reqWidth, reqHeight, true);
+        }
+
+        // rotate
+        if (ei != null) {
+            final Matrix matrix = new Matrix();
+            final int rotationAngle = calculateRotationAngle(ei);
+            if (rotationAngle != 0) {
+                matrix.postRotate(rotationAngle);
+                bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
+            }
+        }
+
+        return bitmap;
+    }
+
+    private static int calculateRotationAngle(ExifInterface ei) {
+        int rotationAngle = 0;
+        final int orientation = ei.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
+
+        switch (orientation) {
+        case ExifInterface.ORIENTATION_ROTATE_90:
+            rotationAngle = 90;
+            break;
+        case ExifInterface.ORIENTATION_ROTATE_180:
+            rotationAngle = 180;
+            break;
+        case ExifInterface.ORIENTATION_ROTATE_270:
+            rotationAngle = 270;
+            break;
+        }
+
+        return rotationAngle;
     }
 
     /**
@@ -419,22 +536,15 @@ public class Fetcher extends Worker {
      * @return A bitmap sampled down from the original with the same aspect ratio and dimensions
      *         that are equal to or greater than the requested width and height
      */
-    public static Bitmap decodeSampledBitmapFromDescriptor(
-            FileDescriptor fileDescriptor, int reqWidth, int reqHeight, Cache cache) {
+    public static Bitmap decodeSampledBitmapFromDescriptor(FileDescriptor fileDescriptor, int reqWidth, int reqHeight,
+            boolean keepAspectRatio, Cache cache) {
 
         // First decode with inJustDecodeBounds=true to check dimensions
         final BitmapFactory.Options options = new BitmapFactory.Options();
         options.inJustDecodeBounds = true;
         BitmapFactory.decodeFileDescriptor(fileDescriptor, null, options);
 
-        // If requested width/height were not specified - decode in full size.
-        if (reqWidth > 0 && reqHeight > 0) {
-            // Calculate inSampleSize
-            options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
-        }
-        else {
-            options.inSampleSize = 1;
-        }
+        options.inSampleSize = calculateInSampleSize(options.outWidth, options.outHeight, reqWidth, reqHeight);
 
         // Decode bitmap with inSampleSize set
         options.inJustDecodeBounds = false;
@@ -448,32 +558,27 @@ public class Fetcher extends Worker {
         try {
             // This can throw an error on a corrupted image when using an inBitmap
             results = BitmapFactory.decodeFileDescriptor(fileDescriptor, null, options);
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             // clear the inBitmap and try again
             options.inBitmap = null;
             results = BitmapFactory.decodeFileDescriptor(fileDescriptor, null, options);
             // If image is broken, rather than an issue with the inBitmap, we will get a NULL out in this case...
         }
-        return results;
+
+        ExifInterface ei = getExifInterface(fileDescriptor);
+
+        return scaleAndRotateBitmap(results, ei, reqWidth, reqHeight, keepAspectRatio);
     }
 
-    public static Bitmap decodeSampledBitmapFromByteArray(
-            byte[] buffer, int reqWidth, int reqHeight, Cache cache) {
+    public static Bitmap decodeSampledBitmapFromByteArray(byte[] buffer, int reqWidth, int reqHeight,
+            boolean keepAspectRatio, Cache cache) {
 
         // First decode with inJustDecodeBounds=true to check dimensions
         final BitmapFactory.Options options = new BitmapFactory.Options();
         options.inJustDecodeBounds = true;
         BitmapFactory.decodeByteArray(buffer, 0, buffer.length, options);
 
-        // If requested width/height were not specified - decode in full size.
-        if (reqWidth > 0 && reqHeight > 0) {
-            // Calculate inSampleSize
-            options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
-        }
-        else {
-            options.inSampleSize = 1;
-        }
+        options.inSampleSize = calculateInSampleSize(options.outWidth, options.outHeight, reqWidth, reqHeight);
 
         // Decode bitmap with inSampleSize set
         options.inJustDecodeBounds = false;
@@ -483,7 +588,12 @@ public class Fetcher extends Worker {
             addInBitmapOptions(options, cache);
         }
 
-        return BitmapFactory.decodeByteArray(buffer, 0, buffer.length, options);
+        final Bitmap bitmap = BitmapFactory.decodeByteArray(buffer, 0, buffer.length, options);
+
+        InputStream is = new ByteArrayInputStream(buffer);
+        ExifInterface ei = getExifInterface(is);
+
+        return scaleAndRotateBitmap(bitmap, ei, reqWidth, reqHeight, keepAspectRatio);
     }
 
     /**
@@ -492,20 +602,20 @@ public class Fetcher extends Worker {
      * the closest inSampleSize that is a power of 2 and will result in the final decoded bitmap
      * having a width and height equal to or larger than the requested width and height.
      *
-     * @param options An options object with out* params already populated (run through a decode*
-     *            method with inJustDecodeBounds==true
+     * @param imageWidth The original width of the resulting bitmap
+     * @param imageHeight The original height of the resulting bitmap
      * @param reqWidth The requested width of the resulting bitmap
      * @param reqHeight The requested height of the resulting bitmap
      * @return The value to be used for inSampleSize
      */
-    public static int calculateInSampleSize(BitmapFactory.Options options,
-                                            int reqWidth, int reqHeight) {
+    public static int calculateInSampleSize(int imageWidth, int imageHeight, int reqWidth, int reqHeight) {
         // BEGIN_INCLUDE (calculate_sample_size)
         // Raw height and width of image
-        final int height = options.outHeight;
-        final int width = options.outWidth;
+        final int height = imageHeight;
+        final int width = imageWidth;
+        reqWidth = reqWidth > 0 ? reqWidth : width;
+        reqHeight = reqHeight > 0 ? reqHeight : height;
         int inSampleSize = 1;
-
         if (height > reqHeight || width > reqWidth) {
 
             final int halfHeight = height / 2;
@@ -513,8 +623,7 @@ public class Fetcher extends Worker {
 
             // Calculate the largest inSampleSize value that is a power of 2 and keeps both
             // height and width larger than the requested height and width.
-            while ((halfHeight / inSampleSize) > reqHeight
-                    && (halfWidth / inSampleSize) > reqWidth) {
+            while ((halfHeight / inSampleSize) > reqHeight && (halfWidth / inSampleSize) > reqWidth) {
                 inSampleSize *= 2;
             }
 
@@ -524,14 +633,14 @@ public class Fetcher extends Worker {
             // end up being too large to fit comfortably in memory, so we should
             // be more aggressive with sample down the image (=larger inSampleSize).
 
-            long totalPixels = width * height / inSampleSize;
+            long totalPixels = (width / inSampleSize) * (height / inSampleSize);
 
             // Anything more than 2x the requested pixels we'll sample down further
             final long totalReqPixelsCap = reqWidth * reqHeight * 2;
 
             while (totalPixels > totalReqPixelsCap) {
                 inSampleSize *= 2;
-                totalPixels /= 2;
+                totalPixels = (width / inSampleSize) * (height / inSampleSize);
             }
         }
         return inSampleSize;

android/widgets/src/main/java/org/nativescript/widgets/Image/Utils.java

@@ -52,4 +52,8 @@ public class Utils {
     public static boolean hasKitKat() {
         return Build.VERSION.SDK_INT >= VERSION_CODES.KITKAT;
     }
+
+    public static boolean hasN() {
+        return Build.VERSION.SDK_INT >= VERSION_CODES.N;
+    }
 }

android/widgets/src/main/java/org/nativescript/widgets/Image/Worker.java

@@ -95,7 +95,7 @@ public abstract class Worker {
      * @param owner The owner to bind the downloaded image to.
      * @param listener A listener that will be called back once the image has been loaded.
      */
-    public void loadImage(String uri, BitmapOwner owner, int decodeWidth, int decodeHeight, boolean useCache, boolean async, OnImageLoadedListener listener) {
+    public void loadImage(String uri, BitmapOwner owner, int decodeWidth, int decodeHeight, boolean keepAspectRatio, boolean useCache, boolean async, OnImageLoadedListener listener) {
         if (uri == null) {
             return;
         }
@@ -111,7 +111,7 @@ public abstract class Worker {
 
         if (value == null && !async) {
             // Decode sync.
-            value = processBitmap(uri, decodeWidth, decodeHeight, useCache);
+            value = processBitmap(uri, decodeWidth, decodeHeight, keepAspectRatio, useCache);
             if (value != null) {
                 if (mCache != null && useCache) {
                     if (debuggable > 0) {
@@ -135,7 +135,7 @@ public abstract class Worker {
                 listener.onImageLoaded(true);
             }
         } else if (cancelPotentialWork(uri, owner)) {
-            final BitmapWorkerTask task = new BitmapWorkerTask(uri, owner, decodeWidth, decodeHeight, useCache, listener);
+            final BitmapWorkerTask task = new BitmapWorkerTask(uri, owner, decodeWidth, decodeHeight, keepAspectRatio, useCache, listener);
             final AsyncDrawable asyncDrawable =
                     new AsyncDrawable(mResources, mLoadingBitmap, task);
             owner.setDrawable(asyncDrawable);
@@ -194,7 +194,7 @@ public abstract class Worker {
      *            {@link Worker#loadImage(String, BitmapOwner, int, int, boolean, boolean, OnImageLoadedListener)}
      * @return The processed bitmap
      */
-    protected abstract Bitmap processBitmap(String uri, int decodeWidth, int decodeHeight, boolean useCache);
+    protected abstract Bitmap processBitmap(String uri, int decodeWidth, int decodeHeight, boolean keepAspectRatio, boolean useCache);
 
     /**
      * @return The {@link Cache} object currently being used by this Worker.
@@ -263,18 +263,20 @@ public abstract class Worker {
     private class BitmapWorkerTask extends AsyncTask<Void, Void, Bitmap> {
         private int mDecodeWidth;
         private int mDecodeHeight;
+        private boolean mKeepAspectRatio;
         private String mUri;
         private boolean mCacheImage;
         private final WeakReference<BitmapOwner> imageViewReference;
         private final OnImageLoadedListener mOnImageLoadedListener;
 
-        public BitmapWorkerTask(String uri, BitmapOwner owner, int decodeWidth, int decodeHeight, boolean cacheImage) {
-            this(uri, owner, decodeWidth, decodeHeight, cacheImage, null);
+        public BitmapWorkerTask(String uri, BitmapOwner owner, int decodeWidth, int decodeHeight, boolean keepAspectRatio, boolean cacheImage) {
+            this(uri, owner, decodeWidth, decodeHeight, keepAspectRatio, cacheImage, null);
         }
 
-        public BitmapWorkerTask(String uri, BitmapOwner owner, int decodeWidth, int decodeHeight, boolean cacheImage, OnImageLoadedListener listener) {
+        public BitmapWorkerTask(String uri, BitmapOwner owner, int decodeWidth, int decodeHeight, boolean keepAspectRatio, boolean cacheImage, OnImageLoadedListener listener) {
             mDecodeWidth = decodeWidth;
             mDecodeHeight = decodeHeight;
+            mKeepAspectRatio = keepAspectRatio;
             mCacheImage = cacheImage;
             mUri = uri;
             imageViewReference = new WeakReference<BitmapOwner>(owner);
@@ -308,7 +310,7 @@ public abstract class Worker {
             // process method (as implemented by a subclass)
             if (bitmap == null && !isCancelled() && getAttachedOwner() != null
                     && !mExitTasksEarly) {
-                bitmap = processBitmap(mUri, mDecodeWidth, mDecodeHeight, mCacheImage);
+                bitmap = processBitmap(mUri, mDecodeWidth, mDecodeHeight, mKeepAspectRatio, mCacheImage);
             }
 
             // If the bitmap was processed and the image cache is available, then add the processed

android/widgets/src/main/java/org/nativescript/widgets/ImageView.java

@@ -30,6 +30,7 @@ public class ImageView extends android.widget.ImageView implements BitmapOwner {
     private String mUri;
     private int mDecodeWidth;
     private int mDecodeHeight;
+    private boolean mKeepAspectRatio;
     private boolean mUseCache;
     private boolean mAsync;
     private Worker.OnImageLoadedListener mListener;
@@ -162,9 +163,14 @@ public class ImageView extends android.widget.ImageView implements BitmapOwner {
     }
 
     public void setUri(String uri, int decodeWidth, int decodeHeight, boolean useCache, boolean async) {
+        this.setUri(uri, decodeWidth, decodeHeight, false, useCache, async);
+    }
+
+    public void setUri(String uri, int decodeWidth, int decodeHeight, boolean keepAspectRatio, boolean useCache, boolean async) {
         mUri = uri;
         mDecodeWidth = decodeWidth;
         mDecodeHeight = decodeHeight;
+        mKeepAspectRatio = keepAspectRatio;
         mUseCache = useCache;
         mAsync = async;
 
@@ -188,7 +194,7 @@ public class ImageView extends android.widget.ImageView implements BitmapOwner {
         Fetcher fetcher = Fetcher.getInstance(this.getContext());
         if (mUri != null && fetcher != null) {
             // Get the Bitmap from cache.
-            fetcher.loadImage(mUri, this, mDecodeWidth, mDecodeHeight, mUseCache, mAsync, mListener);
+            fetcher.loadImage(mUri, this, mDecodeWidth, mDecodeHeight, mKeepAspectRatio, mUseCache, mAsync, mListener);
         }
     }