Use Extended view pager and set onTouchListener into image forshow/hide the action bar

res/layout/preview_image_activity.xml

@@ -21,7 +21,7 @@
     android:layout_height="match_parent"
     android:orientation="vertical" >
 
-    <android.support.v4.view.ViewPager 
+    <com.ortiz.touch.ExtendedViewPager
         android:id="@+id/fragmentPager"
 		android:layout_width="match_parent"
 		android:layout_height="match_parent" 

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

@@ -34,13 +34,14 @@ import android.view.View.OnTouchListener;
 import com.actionbarsherlock.app.ActionBar;
 import com.actionbarsherlock.view.MenuItem;
 import com.actionbarsherlock.view.Window;
+import com.ortiz.touch.ExtendedViewPager;
 import com.owncloud.android.R;
 import com.owncloud.android.authentication.AccountUtils;
 import com.owncloud.android.datamodel.FileDataStorageManager;
 import com.owncloud.android.datamodel.OCFile;
 import com.owncloud.android.files.services.FileDownloader;
-import com.owncloud.android.files.services.FileUploader;
 import com.owncloud.android.files.services.FileDownloader.FileDownloaderBinder;
+import com.owncloud.android.files.services.FileUploader;
 import com.owncloud.android.files.services.FileUploader.FileUploaderBinder;
 import com.owncloud.android.lib.common.operations.OnRemoteOperationListener;
 import com.owncloud.android.lib.common.operations.RemoteOperation;
@@ -73,7 +74,7 @@ ViewPager.OnPageChangeListener, OnRemoteOperationListener {
     public static final String KEY_WAITING_TO_PREVIEW = "WAITING_TO_PREVIEW";
     private static final String KEY_WAITING_FOR_BINDER = "WAITING_FOR_BINDER";
     
-    private ViewPager mViewPager; 
+    private ExtendedViewPager mViewPager;
     private PreviewImagePagerAdapter mPreviewImagePagerAdapter;    
     
     private boolean mRequestWaitingForBinder;
@@ -118,7 +119,7 @@ ViewPager.OnPageChangeListener, OnRemoteOperationListener {
             parentFolder = getStorageManager().getFileByPath(OCFile.ROOT_PATH);
         }
         mPreviewImagePagerAdapter = new PreviewImagePagerAdapter(getSupportFragmentManager(), parentFolder, getAccount(), getStorageManager());
-        mViewPager = (ViewPager) findViewById(R.id.fragmentPager);
+        mViewPager = (ExtendedViewPager) findViewById(R.id.fragmentPager);
         int position = mPreviewImagePagerAdapter.getFilePosition(getFile());
         position = (position >= 0) ? position : 0;
         mViewPager.setAdapter(mPreviewImagePagerAdapter); 

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

@@ -126,6 +126,7 @@ 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());
         mMessageView = (TextView)mView.findViewById(R.id.message);
         mMessageView.setVisibility(View.GONE);