Merge pull request #7 from Hatzen/master

Fix support library issue with android sdk 19 relates to issue #6
hsmnzaydn · Jul 8, 2021 · ceafe65 · ceafe65
2 parents 7d57c1d + efa9bf4
commit ceafe65
Showing 1 changed file with 21 additions and 3 deletions.
diff --git a/image-zoom-view/src/main/java/ozaydin/serkan/com/image_zoom_view/ImageViewZoom.java b/image-zoom-view/src/main/java/ozaydin/serkan/com/image_zoom_view/ImageViewZoom.java
@@ -3,6 +3,7 @@
 import android.Manifest;
 import android.app.Activity;
 import android.content.Context;
+import android.content.ContextWrapper;
 import android.content.res.TypedArray;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
@@ -126,14 +127,31 @@ public void setConfig(ImageViewZoomConfig config){
     public void onClick(View view) {
         if (getDrawable() != null) {
             if(imageSaveProperties != null){
-                new Dialog().show(((FragmentActivity) getContext()).getSupportFragmentManager(), getBitmap(),this.imageViewZoomConfig,imageSaveProperties);
+                new Dialog().show(getActivity().getSupportFragmentManager(), getBitmap(),this.imageViewZoomConfig,imageSaveProperties);
             }else{
-                new Dialog().show(((FragmentActivity) getContext()).getSupportFragmentManager(), getBitmap(),this.imageViewZoomConfig);
+                new Dialog().show(getActivity().getSupportFragmentManager(), getBitmap(),this.imageViewZoomConfig);
             }
         }
     }
 
-
+    /**
+     * Return the activity which might be needed as context object but is not given by View#getContext
+     * as with support library <23.0.0 it might just be a wrapper.
+     *
+     * Solution from https://stackoverflow.com/a/38814443/8524651
+     *
+     * @return the correct activity context
+     */
+    private FragmentActivity getActivity() {
+        Context context = getContext();
+        while (context instanceof ContextWrapper) {
+            if (context instanceof FragmentActivity) {
+                return (FragmentActivity) context;
+            }
+            context = ((ContextWrapper) context).getBaseContext();
+        }
+        return null;
+    }
 
 
     @Override