Fixed bug when comming back to a zoomed photo, it is not zoom

src/com/owncloud/android/ui/preview/PreviewImageActivity.java

@@ -27,9 +27,6 @@ import android.os.Bundle;
 import android.os.IBinder;
 import android.preference.PreferenceManager;
 import android.support.v4.view.ViewPager;
-import android.view.MotionEvent;
-import android.view.View;
-import android.view.View.OnTouchListener;
 
 import com.actionbarsherlock.app.ActionBar;
 import com.actionbarsherlock.view.MenuItem;
@@ -64,7 +61,7 @@ import com.owncloud.android.utils.Log_OC;
  *  @author David A. Velasco
  */
 public class PreviewImageActivity extends FileActivity implements 
-FileFragment.ContainerActivity, OnTouchListener,  
+ FileFragment.ContainerActivity,
 ViewPager.OnPageChangeListener, OnRemoteOperationListener {
     
     public static final int DIALOG_SHORT_WAIT = 0;
@@ -323,7 +320,11 @@ ViewPager.OnPageChangeListener, OnRemoteOperationListener {
                     requestForDownload(currentFile);
                 }
             }
+
+            // Call to reset image zoom to initial state
+            ((PreviewImagePagerAdapter) mViewPager.getAdapter()).resetZoom();
         }
+
     }
     
     /**
@@ -389,17 +390,7 @@ ViewPager.OnPageChangeListener, OnRemoteOperationListener {
 
     }
 
-
-    @Override
-    public boolean onTouch(View v, MotionEvent event) {
-        if (event.getAction() == MotionEvent.ACTION_UP) {
-           toggleFullScreen();
-        }
-        return true;
-    }
-
-    
-    private void toggleFullScreen() {
+    public void toggleFullScreen() {
         ActionBar actionBar = getSupportActionBar();
         if (mFullScreen) {
             actionBar.show();

src/com/owncloud/android/ui/preview/PreviewImageFragment.java

@@ -31,7 +31,7 @@ import android.support.v4.app.FragmentStatePagerAdapter;
 import android.view.Display;
 import android.view.LayoutInflater;
 import android.view.View;
-import android.view.View.OnTouchListener;
+import android.view.View.OnClickListener;
 import android.view.ViewGroup;
 import android.widget.ImageView;
 import android.widget.ProgressBar;
@@ -126,15 +126,19 @@ public class PreviewImageFragment extends FileFragment {
         mView = inflater.inflate(R.layout.preview_image_fragment, container, false);
         mImageView = (TouchImageView) mView.findViewById(R.id.image);
         mImageView.setVisibility(View.GONE);
-        mImageView.setOnTouchListener((OnTouchListener) getActivity());
-        mView.setOnTouchListener((OnTouchListener)getActivity());
+        mImageView.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                ((PreviewImageActivity) getActivity()).toggleFullScreen();
+            }
+
+        });
         mMessageView = (TextView)mView.findViewById(R.id.message);
         mMessageView.setVisibility(View.GONE);
         mProgressWheel = (ProgressBar)mView.findViewById(R.id.progressWheel);
         mProgressWheel.setVisibility(View.VISIBLE);
         return mView;
     }
-    
 
     /**
      * {@inheritDoc}
@@ -142,13 +146,8 @@ public class PreviewImageFragment extends FileFragment {
     @Override
     public void onAttach(Activity activity) {
         super.onAttach(activity);
-        if (!(activity instanceof OnTouchListener)) {
-            throw new ClassCastException(activity.toString() + 
-                    " must implement " + OnTouchListener.class.getSimpleName());
-        }
     }
-    
-    
+
     /**
      * {@inheritDoc}
      */
@@ -304,7 +303,6 @@ public class PreviewImageFragment extends FileFragment {
         super.onPause();
     }
 
-
     @Override
     public void onDestroy() {
         if (mBitmap != null) {
@@ -514,5 +512,8 @@ public class PreviewImageFragment extends FileFragment {
         container.finish();
     }
     
+    public TouchImageView getImageView() {
+        return mImageView;
+    }
     
 }

src/com/owncloud/android/ui/preview/PreviewImagePagerAdapter.java

@@ -18,13 +18,11 @@ package com.owncloud.android.ui.preview;
 
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.Iterator;
 import java.util.Map;
 import java.util.Set;
 import java.util.Vector;
 
-import com.owncloud.android.datamodel.OCFile;
-import com.owncloud.android.ui.fragment.FileFragment;
-
 import android.accounts.Account;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentManager;
@@ -32,6 +30,8 @@ import android.support.v4.app.FragmentStatePagerAdapter;
 import android.view.ViewGroup;
 
 import com.owncloud.android.datamodel.FileDataStorageManager;
+import com.owncloud.android.datamodel.OCFile;
+import com.owncloud.android.ui.fragment.FileFragment;
 
 /**
  * Adapter class that provides Fragment instances  
@@ -179,6 +179,19 @@ public class PreviewImagePagerAdapter extends FragmentStatePagerAdapter {
         return mDownloadErrors.contains(Integer.valueOf(position));
     }
 
+    /**
+     * Reset the image zoom to default value for each CachedFragments
+     */
+    public void resetZoom() {
+        Iterator<FileFragment> entries = mCachedFragments.values().iterator();
+        while (entries.hasNext()) {
+        FileFragment fileFragment = (FileFragment) entries.next();
+            if (fileFragment instanceof PreviewImageFragment) {
+                ((PreviewImageFragment) fileFragment).getImageView().resetZoom();
+            }
+        }
+    }
+
     /* -*
      * Called when a change in the shown pages is going to start being made.
      *