Add config to enable saving bitmap to instance state

Author: ArthurHub

cropper/src/main/java/com/theartofdev/edmodo/cropper/CropImageView.java

@@ -112,6 +112,15 @@ public class CropImageView extends FrameLayout {
      */
     private ScaleType mScaleType;
 
+    /**
+     * if to save bitmap on save instance state.<br>
+     * It is best to avoid it by using URI in setting image for cropping.<br>
+     * If false the bitmap is not saved and if restore is required to view will be empty, storing the bitmap
+     * requires saving it to file which can be expensive.
+     * default: false.
+     */
+    private boolean mSaveBitmapToInstanceState = false;
+
     /**
      * if to show crop overlay UI what contains the crop window UI surrounded by background over the cropping
      * image.<br>
@@ -261,6 +270,8 @@ public CropImageView(Context context, AttributeSet attrs) {
                     options.flipHorizontally = ta.getBoolean(R.styleable.CropImageView_cropFlipHorizontally, options.flipHorizontally);
                     options.flipVertically = ta.getBoolean(R.styleable.CropImageView_cropFlipHorizontally, options.flipVertically);
 
+                    mSaveBitmapToInstanceState = ta.getBoolean(R.styleable.CropImageView_cropSaveBitmapToInstanceState, mSaveBitmapToInstanceState);
+
                     // if aspect ratio is set then set fixed to true
                     if (ta.hasValue(R.styleable.CropImageView_cropAspectRatioX) &&
                             ta.hasValue(R.styleable.CropImageView_cropAspectRatioX) &&
@@ -566,6 +577,28 @@ public void setShowCropOverlay(boolean showCropOverlay) {
         }
     }
 
+    /**
+     * if to save bitmap on save instance state.<br>
+     * It is best to avoid it by using URI in setting image for cropping.<br>
+     * If false the bitmap is not saved and if restore is required to view will be empty, storing the bitmap
+     * requires saving it to file which can be expensive.
+     * default: false.
+     */
+    public boolean isSaveBitmapToInstanceState() {
+        return mSaveBitmapToInstanceState;
+    }
+
+    /**
+     * if to save bitmap on save instance state.<br>
+     * It is best to avoid it by using URI in setting image for cropping.<br>
+     * If false the bitmap is not saved and if restore is required to view will be empty, storing the bitmap
+     * requires saving it to file which can be expensive.
+     * default: false.
+     */
+    public void setSaveBitmapToInstanceState(boolean saveBitmapToInstanceState) {
+        mSaveBitmapToInstanceState = saveBitmapToInstanceState;
+    }
+
     /**
      * Returns the integer of the imageResource
      */
@@ -1149,7 +1182,7 @@ public Parcelable onSaveInstanceState() {
 
         Bundle bundle = new Bundle();
         Uri imageUri = mLoadedImageUri;
-        if (imageUri == null && mImageResource < 1) {
+        if (mSaveBitmapToInstanceState && imageUri == null && mImageResource < 1) {
             mSaveInstanceStateBitmapUri = imageUri = BitmapUtils.writeTempStateStoreBitmap(getContext(), mBitmap, mSaveInstanceStateBitmapUri);
         }
         if (imageUri != null && mBitmap != null) {

cropper/src/main/res/values/attrs.xml

@@ -34,6 +34,7 @@
         <attr name="cropBackgroundColor" format="color"/>
         <attr name="cropSnapRadius" format="dimension"/>
         <attr name="cropTouchRadius" format="dimension"/>
+        <attr name="cropSaveBitmapToInstanceState" format="boolean"/>
         <attr name="cropShowCropOverlay" format="boolean"/>
         <attr name="cropShowProgressBar" format="boolean"/>
         <attr name="cropMinCropWindowWidth" format="dimension"/>