Created
April 19, 2015 22:00
-
-
Save quanturium/c8aa0599a3f984036525 to your computer and use it in GitHub Desktop.
Implementation of SimpleCursorAdapter for the new RecyclerView. It extends this gist: https://gist.github.com/quanturium/46541c81aae2a916e31d
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/* | |
* The MIT License (MIT) | |
* | |
* Copyright (c) 2015 ARNAUD FRUGIER | |
* | |
* Permission is hereby granted, free of charge, to any person obtaining a copy | |
* of this software and associated documentation files (the "Software"), to deal | |
* in the Software without restriction, including without limitation the rights | |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
* copies of the Software, and to permit persons to whom the Software is | |
* furnished to do so, subject to the following conditions: | |
* | |
* The above copyright notice and this permission notice shall be included in all | |
* copies or substantial portions of the Software. | |
* | |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
* SOFTWARE. | |
*/ | |
import android.database.Cursor; | |
import android.support.v7.widget.RecyclerView; | |
import android.view.LayoutInflater; | |
import android.view.View; | |
import android.view.ViewGroup; | |
import android.widget.TextView; | |
public class SimpleCursorRecyclerAdapter extends CursorRecyclerAdapter<SimpleViewHolder> { | |
private int mLayout; | |
private int[] mFrom; | |
private int[] mTo; | |
private String[] mOriginalFrom; | |
public SimpleCursorRecyclerAdapter (int layout, Cursor c, String[] from, int[] to) { | |
super(c); | |
mLayout = layout; | |
mTo = to; | |
mOriginalFrom = from; | |
findColumns(c, from); | |
} | |
@Override | |
public SimpleViewHolder onCreateViewHolder (ViewGroup parent, int viewType) { | |
View v = LayoutInflater.from(parent.getContext()) | |
.inflate(mLayout, parent, false); | |
return new SimpleViewHolder(v, mTo); | |
} | |
@Override | |
public void onBindViewHolder (SimpleViewHolder holder, Cursor cursor) { | |
final int count = mTo.length; | |
final int[] from = mFrom; | |
for (int i = 0; i < count; i++) { | |
holder.views[i].setText(cursor.getString(from[i])); | |
} | |
} | |
/** | |
* Create a map from an array of strings to an array of column-id integers in cursor c. | |
* If c is null, the array will be discarded. | |
* | |
* @param c the cursor to find the columns from | |
* @param from the Strings naming the columns of interest | |
*/ | |
private void findColumns(Cursor c, String[] from) { | |
if (c != null) { | |
int i; | |
int count = from.length; | |
if (mFrom == null || mFrom.length != count) { | |
mFrom = new int[count]; | |
} | |
for (i = 0; i < count; i++) { | |
mFrom[i] = c.getColumnIndexOrThrow(from[i]); | |
} | |
} else { | |
mFrom = null; | |
} | |
} | |
@Override | |
public Cursor swapCursor(Cursor c) { | |
findColumns(c, mOriginalFrom); | |
return super.swapCursor(c); | |
} | |
} | |
class SimpleViewHolder extends RecyclerView.ViewHolder | |
{ | |
public TextView[] views; | |
public SimpleViewHolder (View itemView, int[] to) | |
{ | |
super(itemView); | |
views = new TextView[to.length]; | |
for(int i = 0 ; i < to.length ; i++) { | |
views[i] = (TextView) itemView.findViewById(to[i]); | |
} | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
What are those constructor parameters:
from
andto
?EDIT
Found it in a comment in your web site:
"String[] from
is the array of column names.int[] to
is the ids of the TextViews you want the columns mapped to."I guess the ids should be in form
R.id.my_view_id
.