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Ormlite+RecyclerView
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| /* | |
| * Copyright (C) 2014 skyfish.jy@gmail.com | |
| * | |
| * Licensed under the Apache License, Version 2.0 (the "License"); | |
| * you may not use this file except in compliance with the License. | |
| * You may obtain a copy of the License at | |
| * | |
| * http://www.apache.org/licenses/LICENSE-2.0 | |
| * | |
| * Unless required by applicable law or agreed to in writing, software | |
| * distributed under the License is distributed on an "AS IS" BASIS, | |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| * See the License for the specific language governing permissions and | |
| * limitations under the License. | |
| * | |
| */ | |
| import android.content.Context; | |
| import android.database.Cursor; | |
| import android.database.DataSetObserver; | |
| import android.support.v7.widget.RecyclerView; | |
| // Code from https://gist.github.com/skyfishjy/443b7448f59be978bc59 | |
| // Fix to remove observers (when using CursorLoaders) by: https://gist.github.com/quanturium/46541c81aae2a916e31d | |
| public abstract class CursorRecyclerViewAdapter<VH extends RecyclerView.ViewHolder> extends RecyclerView.Adapter<VH> { | |
| private Cursor mCursor; | |
| private boolean mDataValid; | |
| private int mRowIdColumn; | |
| public CursorRecyclerViewAdapter(Cursor cursor) { | |
| mCursor = cursor; | |
| mDataValid = cursor != null; | |
| mRowIdColumn = mDataValid ? mCursor.getColumnIndexOrThrow("_id") : -1; | |
| setHasStableIds(true); | |
| } | |
| public Cursor getCursor() { | |
| return mCursor; | |
| } | |
| @Override | |
| public int getItemCount() { | |
| if (mDataValid && mCursor != null) { | |
| return mCursor.getCount(); | |
| } else { | |
| return 0; | |
| } | |
| } | |
| @Override | |
| public long getItemId(int position) { | |
| if (hasStableIds() && mDataValid && mCursor != null) { | |
| if (mCursor.moveToPosition(position)) { | |
| return mCursor.getLong(mRowIdColumn); | |
| } else { | |
| return RecyclerView.NO_ID; | |
| } | |
| } else { | |
| return RecyclerView.NO_ID; | |
| } | |
| } | |
| public Object getItem(int position) { | |
| if (mDataValid && mCursor != null) { | |
| mCursor.moveToPosition(position); | |
| return mCursor; | |
| } else { | |
| return null; | |
| } | |
| } | |
| public abstract void onBindViewHolder(VH viewHolder, Cursor cursor); | |
| @Override | |
| public void onBindViewHolder(VH viewHolder, int position) { | |
| if (!mDataValid) { | |
| throw new IllegalStateException("this should only be called when the cursor is valid"); | |
| } | |
| if (!mCursor.moveToPosition(position)) { | |
| throw new IllegalStateException("couldn't move cursor to position " + position); | |
| } | |
| onBindViewHolder(viewHolder, mCursor); | |
| } | |
| /** | |
| * Change the underlying cursor to a new cursor. If there is an existing cursor it will be | |
| * closed. | |
| */ | |
| public void changeCursor(Cursor cursor) { | |
| Cursor old = swapCursor(cursor); | |
| if (old != null) { | |
| old.close(); | |
| } | |
| } | |
| /** | |
| * Swap in a new Cursor, returning the old Cursor. Unlike | |
| * {@link #changeCursor(Cursor)}, the returned old Cursor is <em>not</em> | |
| * closed. | |
| */ | |
| public Cursor swapCursor(Cursor newCursor) { | |
| if (newCursor == mCursor) { | |
| return null; | |
| } | |
| final int oldCursorSize = getItemCount(); | |
| final Cursor oldCursor = mCursor; | |
| mCursor = newCursor; | |
| if (mCursor != null) { | |
| mRowIdColumn = newCursor.getColumnIndexOrThrow("_id"); | |
| mDataValid = true; | |
| notifyDataSetChanged(); | |
| } else { | |
| mRowIdColumn = -1; | |
| mDataValid = false; | |
| // notify the observers about the lack of a data set | |
| notifyItemRangeRemoved(0, oldCursorSize); | |
| } | |
| return oldCursor; | |
| } | |
| } |
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| import android.content.Context; | |
| import android.graphics.Typeface; | |
| import android.support.v7.widget.RecyclerView; | |
| import android.view.LayoutInflater; | |
| import android.view.View; | |
| import android.view.ViewGroup; | |
| import android.widget.TextView; | |
| public class DrawerRecyclerViewAdapter extends OrmliteCursorRecyclerViewAdapter<Championship, DrawerRecyclerViewAdapter.ViewHolder> { | |
| public DrawerRecyclerViewAdapter(Context context) { | |
| super(context); | |
| } | |
| @Override | |
| public DrawerRecyclerViewAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { | |
| View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.drawer_row, parent, false); | |
| return new ViewHolder(v); | |
| } | |
| @Override | |
| public void onBindViewHolder(ViewHolder holder, Championship championship) { | |
| holder.drawerTextView.setText(championship.getCommonName()); | |
| } | |
| public static class ViewHolder extends RecyclerView.ViewHolder { | |
| public final TextView drawerTextView; | |
| public ViewHolder(View drawerView) { | |
| super(drawerView); | |
| drawerTextView = (TextView) drawerView.findViewById(R.id.drawerTextView); | |
| } | |
| } | |
| } |
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| import android.content.Context; | |
| import android.database.Cursor; | |
| import android.support.v7.widget.RecyclerView; | |
| import com.j256.ormlite.android.AndroidDatabaseResults; | |
| import com.j256.ormlite.stmt.PreparedQuery; | |
| import java.sql.SQLException; | |
| // Based on https://github.com/j256/ormlite-android/pull/8 | |
| public abstract class OrmliteCursorRecyclerViewAdapter<T, VH extends RecyclerView.ViewHolder> extends CursorRecyclerViewAdapter<VH> { | |
| protected PreparedQuery<T> preparedQuery; | |
| public OrmliteCursorRecyclerViewAdapter(Context context){ | |
| super(context,null); | |
| } | |
| public abstract void onBindViewHolder(VH holder, T t); | |
| public final void onBindViewHolder(VH viewHolder, Cursor cursor){ | |
| try { | |
| onBindViewHolder(viewHolder, this.cursorToObject(cursor)); | |
| } catch (SQLException e) { | |
| e.printStackTrace(); | |
| } | |
| } | |
| public final void changeCursor(Cursor cursor) { | |
| throw new UnsupportedOperationException("Please use OrmLiteCursorAdapter.changeCursor(Cursor,PreparedQuery) instead"); | |
| } | |
| public void changeCursor(Cursor cursor, PreparedQuery<T> preparedQuery) { | |
| this.setPreparedQuery(preparedQuery); | |
| super.changeCursor(cursor); | |
| } | |
| public void setPreparedQuery(PreparedQuery<T> preparedQuery) { | |
| this.preparedQuery = preparedQuery; | |
| } | |
| public T getTypedItem(int position) { | |
| try { | |
| return this.cursorToObject((Cursor)getItem(position)); | |
| } catch (SQLException var3) { | |
| throw new RuntimeException(var3); | |
| } | |
| } | |
| protected T cursorToObject(Cursor cursor) throws SQLException { | |
| return this.preparedQuery.mapRow(new AndroidDatabaseResults(cursor, null)); | |
| } | |
| } |
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