Java tutorial
/* * Copyright (C) 2012 http://emuneee.com/blog/apps/ * * 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. */ package com.emuneee.nctrafficcams.ui.adapters; import java.util.ArrayList; import com.emuneee.nctrafficcams.R; import com.emuneee.nctrafficcams.api.Camera; import com.emuneee.nctrafficcams.api.CameraDBHelper; import com.emuneee.nctrafficcams.ui.ViewHolder; import com.emuneee.nctrafficcams.ui.activities.MainActivity; import android.content.Context; import android.database.Cursor; import android.support.v4.widget.CursorAdapter; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.TextView; /** * Binds the cursor containing pointers to camera records to your list view * * @author ehalley * */ public class DefaultCamerasAdapter extends CursorAdapter implements RetrievableCameraAdapter { private LayoutInflater mInflater; public DefaultCamerasAdapter(Context context, Cursor cursor) { super(context, cursor, 0); mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); } public Camera getCamera(int position) { Camera trafficCamera = null; Cursor cursor = getCursor(); int oldPos = cursor.getPosition(); if (cursor.moveToPosition(position)) { trafficCamera = CameraDBHelper.cursorToCamera(cursor); } cursor.moveToPosition(oldPos); return trafficCamera; } @Override public void bindView(View v, Context context, Cursor cursor) { ViewHolder holder = (ViewHolder) v.getTag(); Camera camera = CameraDBHelper.cursorToCamera(cursor); holder.textViewTitle.setText(camera.getTitle()); holder.imageViewFavorite.setVisibility(camera.isFavorite() ? View.VISIBLE : View.INVISIBLE); MainActivity.getImageWorker().loadImage(camera.getUrl(), holder.imageViewThumbnail, camera); } @Override public View newView(Context context, Cursor cursor, ViewGroup container) { ViewHolder holder = new ViewHolder(); View view = mInflater.inflate(R.layout.gallery_item, container, false); holder.textViewTitle = (TextView) view.findViewById(R.id.text_view_title); holder.imageViewThumbnail = (ImageView) view.findViewById(R.id.image_view_camera); holder.imageViewFavorite = (ImageView) view.findViewById(R.id.image_view_favorite); view.setTag(holder); return view; } @Override public ArrayList<Camera> getCameras() { Cursor cursor = getCursor(); int oldPos = cursor.getPosition(); ArrayList<Camera> cameras = CameraDBHelper.cursorToCameras(cursor); cursor.moveToPosition(oldPos); return cameras; } }