/* * Copyright (C) 2014 The Android Open Source Project * * 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.example.google.maplist; import android.os.Bundle; import android.support.v7.app.ActionBarActivity; import android.support.v7.widget.GridLayoutManager; import android.support.v7.widget.RecyclerView; import android.view.View; import com.google.android.gms.common.ConnectionResult; import com.google.android.gms.common.GooglePlayServicesUtil; import com.google.android.gms.maps.MapView; public abstract class MapListActivity extends ActionBarActivity { protected MapLocationAdapter mListAdapter; protected RecyclerView mRecyclerView; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_list); mRecyclerView = (RecyclerView) findViewById(R.id.card_list); // Determine the number of columns to display, based on screen width. int rows = getResources().getInteger(R.integer.map_grid_cols); GridLayoutManager layoutManager = new GridLayoutManager(this, rows, GridLayoutManager.VERTICAL, false); mRecyclerView.setLayoutManager(layoutManager); mListAdapter = createMapListAdapter(); // Delay attaching Adapter to RecyclerView until we can ensure that we have correct // Google Play service version (in onResume). } protected abstract MapLocationAdapter createMapListAdapter(); @Override public void onLowMemory() { super.onLowMemory(); if (mListAdapter != null) { for (MapView m : mListAdapter.getMapViews()) { m.onLowMemory(); } } } @Override protected void onPause() { super.onPause(); if (mListAdapter != null) { for (MapView m : mListAdapter.getMapViews()) { m.onPause(); } } } @Override protected void onResume() { super.onResume(); int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this); if (resultCode == ConnectionResult.SUCCESS) { mRecyclerView.setAdapter(mListAdapter); } else { GooglePlayServicesUtil.getErrorDialog(resultCode, this, 1).show(); } if (mListAdapter != null) { for (MapView m : mListAdapter.getMapViews()) { m.onResume(); } } } @Override protected void onDestroy() { if (mListAdapter != null) { for (MapView m : mListAdapter.getMapViews()) { m.onDestroy(); } } super.onDestroy(); } /** * Show a full mapView when a mapView card is selected. This method is attached to each CardView * displayed within this activity's RecyclerView. * * @param view The view (CardView) that was clicked. */ public abstract void showMapDetails(View view); }