butterknife for details fragment + proper empty content handling

src/main/java/com/owncloud/android/ui/activity/ToolbarActivity.java

@@ -36,6 +36,7 @@ import android.widget.ProgressBar;
 import com.owncloud.android.R;
 import com.owncloud.android.datamodel.FileDataStorageManager;
 import com.owncloud.android.datamodel.OCFile;
+import com.owncloud.android.datamodel.ThumbnailsCacheManager;
 import com.owncloud.android.utils.ThemeUtils;
 
 /**

src/main/java/com/owncloud/android/ui/fragment/FileDetailFragment.java

@@ -38,6 +38,7 @@ import android.view.View.OnClickListener;
 import android.view.ViewGroup;
 import android.widget.ImageButton;
 import android.widget.ImageView;
+import android.widget.LinearLayout;
 import android.widget.PopupMenu;
 import android.widget.ProgressBar;
 import android.widget.TextView;
@@ -67,6 +68,10 @@ import java.lang.ref.WeakReference;
 import butterknife.BindView;
 import butterknife.ButterKnife;
 import butterknife.Unbinder;
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import butterknife.Optional;
+import butterknife.Unbinder;
 
 /**
  * This Fragment is used to display the details about a file.
@@ -123,6 +128,60 @@ public class FileDetailFragment extends FileFragment implements OnClickListener
     private ToolbarActivity activity;
     private int activeTab;
 
+    @Nullable @BindView(R.id.fdProgressBlock)
+    View downloadProgressContainer;
+
+    @Nullable @BindView(R.id.fdCancelBtn)
+    ImageButton cancelButton;
+
+    @Nullable @BindView(R.id.fdProgressBar)
+    ProgressBar progressBar;
+
+    @Nullable @BindView(R.id.fdProgressText)
+    TextView progressText;
+
+    @Nullable @BindView(R.id.fdFilename)
+    TextView fileName;
+
+    @Nullable @BindView(R.id.fdSize)
+    TextView fileSize;
+
+    @Nullable @BindView(R.id.fdModified)
+    TextView fileModifiedTimestamp;
+
+    @Nullable @BindView(R.id.fdFavorite)
+    ImageView favoriteIcon;
+
+    @Nullable @BindView(R.id.overflow_menu)
+    ImageView overflowMenu;
+
+    @Nullable @BindView(R.id.tab_layout)
+    TabLayout tabLayout;
+
+    @Nullable @BindView(R.id.pager)
+    ViewPager viewPager;
+
+    @Nullable @BindView(R.id.empty_list_view_text)
+    protected TextView emptyContentMessage;
+
+    @Nullable @BindView(R.id.empty_list_view_headline)
+    protected TextView emptyContentHeadline;
+
+    @Nullable @BindView(R.id.empty_list_icon)
+    protected ImageView emptyContentIcon;
+
+    @Nullable @BindView(R.id.empty_list_progress)
+    protected ProgressBar emptyProgressBar;
+
+    private int layout;
+    private View view;
+    private boolean previewLoaded;
+    private Account account;
+    private Unbinder unbinder;
+
+    public ProgressListener progressListener;
+    private ToolbarActivity activity;
+
     /**
      * Public factory method to create new FileDetailFragment instances.
      *