RecyclerViewFragment and other abstract classes in use for alarms and timers
This commit is contained in:
Phillip Hsu
@@ -1,13 +1,10 @@
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package com.philliphsu.clock2.alarms;
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import android.database.Cursor;
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import android.support.v7.widget.RecyclerView;
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import android.util.Log;
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import android.view.ViewGroup;
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import com.philliphsu.clock2.Alarm;
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import com.philliphsu.clock2.BaseCursorAdapter;
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import com.philliphsu.clock2.OnListItemInteractionListener;
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import com.philliphsu.clock2.model.AlarmDatabaseHelper.AlarmCursor;
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import com.philliphsu.clock2.util.AlarmController;
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/**
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@@ -15,63 +12,19 @@ import com.philliphsu.clock2.util.AlarmController;
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*
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* TODO: Extend from BaseCursorAdapter
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*/
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public class AlarmsCursorAdapter extends RecyclerView.Adapter<AlarmViewHolder> {
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public class AlarmsCursorAdapter extends BaseCursorAdapter<Alarm, AlarmViewHolder, com.philliphsu.clock2.model.AlarmCursor> {
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private static final String TAG = "AlarmsCursorAdapter";
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private final OnListItemInteractionListener<Alarm> mListener;
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private final AlarmController mAlarmController;
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private AlarmCursor mCursor;
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public AlarmsCursorAdapter(OnListItemInteractionListener<Alarm> listener,
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AlarmController alarmController) {
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mListener = listener;
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super(listener);
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mAlarmController = alarmController;
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// Excerpt from docs of notifyDataSetChanged():
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// "RecyclerView will attempt to synthesize [artificially create?]
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// visible structural change events [when items are inserted, removed or
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// moved] for adapters that report that they have stable IDs when
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// [notifyDataSetChanged()] is used. This can help for the purposes of
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// animation and visual object persistence [?] but individual item views
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// will still need to be rebound and relaid out."
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setHasStableIds(true);
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}
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@Override
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public AlarmViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
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return new AlarmViewHolder(parent, mListener, mAlarmController);
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}
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@Override
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public void onBindViewHolder(AlarmViewHolder holder, int position) {
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if (!mCursor.moveToPosition(position)) {
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Log.e(TAG, "Failed to bind alarm " + position);
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return;
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}
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holder.onBind(mCursor.getAlarm());
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}
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@Override
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public int getItemCount() {
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return mCursor == null ? 0 : mCursor.getCount();
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}
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@Override
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public long getItemId(int position) {
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if (mCursor == null || !mCursor.moveToPosition(position)) {
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return super.getItemId(position); // -1
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}
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return mCursor.getId();
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}
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// TODO: Cursor param should be the appropriate subclass?
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public void swapCursor(Cursor cursor) {
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if (mCursor == cursor) {
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return;
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}
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if (mCursor != null) {
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mCursor.close();
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}
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mCursor = (AlarmCursor) cursor;
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notifyDataSetChanged();
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protected AlarmViewHolder onCreateViewHolder(ViewGroup parent, OnListItemInteractionListener<Alarm> listener) {
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return new AlarmViewHolder(parent, listener, mAlarmController);
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}
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}
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@@ -1,26 +1,20 @@
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package com.philliphsu.clock2.alarms;
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import android.app.Activity;
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import android.content.Context;
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import android.content.Intent;
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import android.database.Cursor;
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import android.os.Bundle;
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import android.os.Handler;
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import android.support.v4.app.Fragment;
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import android.support.v4.app.LoaderManager.LoaderCallbacks;
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import android.support.v4.content.Loader;
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import android.support.v7.widget.LinearLayoutManager;
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import android.support.v7.widget.RecyclerView;
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import android.util.Log;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import com.philliphsu.clock2.Alarm;
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import com.philliphsu.clock2.AsyncItemChangeHandler;
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import com.philliphsu.clock2.OnListItemInteractionListener;
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import com.philliphsu.clock2.R;
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import com.philliphsu.clock2.RecyclerViewFragment;
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import com.philliphsu.clock2.editalarm.EditAlarmActivity;
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import com.philliphsu.clock2.model.AlarmCursor;
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import com.philliphsu.clock2.model.AlarmsListCursorLoader;
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import com.philliphsu.clock2.util.AlarmController;
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import com.philliphsu.clock2.util.DelayedSnackbarHandler;
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@@ -28,10 +22,11 @@ import com.philliphsu.clock2.util.DelayedSnackbarHandler;
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import butterknife.Bind;
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import butterknife.ButterKnife;
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// TODO: Use native fragments since we're targeting API >=19?
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// TODO: Use native LoaderCallbacks.
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public class AlarmsFragment extends Fragment implements LoaderCallbacks<Cursor>,
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OnListItemInteractionListener<Alarm>, ScrollHandler {
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public class AlarmsFragment extends RecyclerViewFragment<
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Alarm,
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AlarmViewHolder,
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AlarmCursor,
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AlarmsCursorAdapter> implements ScrollHandler {
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private static final String TAG = "AlarmsFragment";
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private static final int REQUEST_EDIT_ALARM = 0;
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// Public because MainActivity needs to use it.
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@@ -76,23 +71,6 @@ public class AlarmsFragment extends Fragment implements LoaderCallbacks<Cursor>,
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mAlarmController = new AlarmController(getActivity(), mSnackbarAnchor);
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mAsyncItemChangeHandler = new AsyncItemChangeHandler(getActivity(),
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mSnackbarAnchor, this, mAlarmController);
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getLoaderManager().initLoader(0, null, this);
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}
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@Override
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public View onCreateView(LayoutInflater inflater, ViewGroup container,
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Bundle savedInstanceState) {
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View view = inflater.inflate(R.layout.fragment_alarms, container, false);
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ButterKnife.bind(this, view);
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// Set the adapter
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Context context = view.getContext();
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mList.setLayoutManager(new LinearLayoutManager(context));
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mAdapter = new AlarmsCursorAdapter(this, mAlarmController);
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mList.setAdapter(mAdapter);
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return view;
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}
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@Override
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@@ -110,20 +88,29 @@ public class AlarmsFragment extends Fragment implements LoaderCallbacks<Cursor>,
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}
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@Override
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public Loader<Cursor> onCreateLoader(int id, Bundle args) {
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public Loader<AlarmCursor> onCreateLoader(int id, Bundle args) {
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return new AlarmsListCursorLoader(getActivity());
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}
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@Override
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public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
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mAdapter.swapCursor(data);
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public void onLoadFinished(Loader<AlarmCursor> loader, AlarmCursor data) {
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super.onLoadFinished(loader, data);
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// Scroll to the last modified alarm
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performScrollToStableId();
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}
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@Override
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public void onLoaderReset(Loader<Cursor> loader) {
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mAdapter.swapCursor(null);
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public void onFabClick() {
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Intent intent = new Intent(getActivity(), EditAlarmActivity.class);
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startActivityForResult(intent, REQUEST_CREATE_ALARM);
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}
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@Override
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protected AlarmsCursorAdapter getAdapter() {
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if (mAdapter == null) {
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mAdapter = new AlarmsCursorAdapter(this, mAlarmController);
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}
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return mAdapter;
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}
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@Override
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