Differential D74 Diff 260 src/it/reyboz/bustorino/fragments/CommonScrollListener.java

Changeset View

Standalone View

src/it/reyboz/bustorino/fragments/CommonScrollListener.java

Show All 11 Lines	BusTO - Fragments components
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the		MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.		GNU General Public License for more details.

You should have received a copy of the GNU General Public License		You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.		along with this program. If not, see <http://www.gnu.org/licenses/>.
*/		*/
package it.reyboz.bustorino.fragments;		package it.reyboz.bustorino.fragments;

		import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;		import androidx.recyclerview.widget.RecyclerView;
import android.util.Log;		import android.util.Log;
import android.widget.AbsListView;		import android.widget.AbsListView;

import java.lang.ref.WeakReference;		import java.lang.ref.WeakReference;

public class CommonScrollListener extends RecyclerView.OnScrollListener implements AbsListView.OnScrollListener{		public class CommonScrollListener extends RecyclerView.OnScrollListener implements AbsListView.OnScrollListener{

WeakReference<FragmentListenerMain> listenerWeakReference;		WeakReference<FragmentListenerMain> listenerWeakReference;
//enable swipeRefreshLayout when scrolling down or not		//enable swipeRefreshLayout when scrolling down or not
boolean enableRefreshLayout;		boolean enableRefreshLayout;
int lastvisibleitem;		int lastvisibleitem;

public CommonScrollListener(FragmentListenerMain lis, boolean enableRefreshLayout){		public CommonScrollListener(FragmentListenerMain lis, boolean enableRefreshLayout){
listenerWeakReference = new WeakReference<>(lis);		listenerWeakReference = new WeakReference<>(lis);
this.enableRefreshLayout = enableRefreshLayout;		this.enableRefreshLayout = enableRefreshLayout;
}		}
@Override		@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {		public void onScrollStateChanged(AbsListView absListView, int i) {
/*
* This seems to be a totally useless method
*/
}		}

@Override		@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {		public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
FragmentListenerMain listener = listenerWeakReference.get();		FragmentListenerMain listener = listenerWeakReference.get();
if(listener==null){		if(listener==null){
//can't do anything, sorry		//can't do anything, sorry
Log.i(this.getClass().getName(),"called onScroll but FragmentListener is null");		Log.i(this.getClass().getName(),"called onScroll but FragmentListener is null");
Show All 21 Lines	public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
// enabling or disabling the refresh layout		// enabling or disabling the refresh layout
enable = firstItemVisible && topOfFirstItemVisible;		enable = firstItemVisible && topOfFirstItemVisible;
}		}
listener.enableRefreshLayout(enable);		listener.enableRefreshLayout(enable);
//Log.d(getString(R.string.list_fragment_debug),"onScroll active, first item visible: "+firstVisibleItem+", refreshlayout enabled: "+enable);		//Log.d(getString(R.string.list_fragment_debug),"onScroll active, first item visible: "+firstVisibleItem+", refreshlayout enabled: "+enable);
}}		}}

@Override		@Override
public void onScrollStateChanged(RecyclerView recyclerView, int newState) {		public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
FragmentListenerMain listener = listenerWeakReference.get();		FragmentListenerMain listener = listenerWeakReference.get();
if(newState!=SCROLL_STATE_IDLE) listener.showFloatingActionButton(false);		if(newState!=SCROLL_STATE_IDLE) listener.showFloatingActionButton(false);
else listener.showFloatingActionButton(true);		else listener.showFloatingActionButton(true);

}		}
}		}