Java tutorial
/* * Copyright (C) 2012 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 curso.citic17.maps; import android.app.ListActivity; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.support.v4.app.FragmentActivity; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.ListAdapter; import android.widget.ListView; import curso.citic17.maps.R; import curso.citic17.maps.view.FeatureView; /** * The main activity of the API library demo gallery. * <p> * The main layout lists the demonstrated features, with buttons to launch them. */ public final class MainActivity extends ListActivity { /** * A simple POJO that holds the details about the demo that are used by the List Adapter. */ private static class DemoDetails { /** * The resource id of the title of the demo. */ private final int titleId; /** * The resources id of the description of the demo. */ private final int descriptionId; /** * The demo activity's class. */ private final Class<? extends FragmentActivity> activityClass; public DemoDetails(int titleId, int descriptionId, Class<? extends FragmentActivity> activityClass) { super(); this.titleId = titleId; this.descriptionId = descriptionId; this.activityClass = activityClass; } } /** * A custom array adapter that shows a {@link FeatureView} containing details about the demo. */ private static class CustomArrayAdapter extends ArrayAdapter<DemoDetails> { /** * @param demos An array containing the details of the demos to be displayed. */ public CustomArrayAdapter(Context context, DemoDetails[] demos) { super(context, R.layout.feature, R.id.title, demos); } @Override public View getView(int position, View convertView, ViewGroup parent) { FeatureView featureView; if (convertView instanceof FeatureView) { featureView = (FeatureView) convertView; } else { featureView = new FeatureView(getContext()); } DemoDetails demo = getItem(position); featureView.setTitleId(demo.titleId); featureView.setDescriptionId(demo.descriptionId); return featureView; } } private static final DemoDetails[] demos = { new DemoDetails(R.string.basic_map, R.string.basic_description, BasicMapActivity.class), new DemoDetails(R.string.camera_demo, R.string.camera_description, CameraDemoActivity.class), new DemoDetails(R.string.events_demo, R.string.events_description, EventsDemoActivity.class), new DemoDetails(R.string.layers_demo, R.string.layers_description, LayersDemoActivity.class), new DemoDetails(R.string.locationsource_demo, R.string.locationsource_description, LocationSourceDemoActivity.class), new DemoDetails(R.string.uisettings_demo, R.string.uisettings_description, UiSettingsDemoActivity.class), new DemoDetails(R.string.groundoverlay_demo, R.string.groundoverlay_description, GroundOverlayDemoActivity.class), new DemoDetails(R.string.marker_demo, R.string.marker_description, MarkerDemoActivity.class), new DemoDetails(R.string.polygon_demo, R.string.polygon_description, PolygonDemoActivity.class), new DemoDetails(R.string.polyline_demo, R.string.polyline_description, PolylineDemoActivity.class), new DemoDetails(R.string.circle_demo, R.string.circle_description, CircleDemoActivity.class), new DemoDetails(R.string.tile_overlay_demo, R.string.tile_overlay_description, TileOverlayDemoActivity.class), new DemoDetails(R.string.options_demo, R.string.options_description, OptionsDemoActivity.class), new DemoDetails(R.string.multi_map_demo, R.string.multi_map_description, MultiMapDemoActivity.class), new DemoDetails(R.string.retain_map, R.string.retain_map_description, RetainMapActivity.class), new DemoDetails(R.string.raw_mapview_demo, R.string.raw_mapview_description, RawMapViewDemoActivity.class), new DemoDetails(R.string.programmatic_demo, R.string.programmatic_description, ProgrammaticDemoActivity.class) }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ListAdapter adapter = new CustomArrayAdapter(this, demos); setListAdapter(adapter); } @Override protected void onListItemClick(ListView l, View v, int position, long id) { DemoDetails demo = (DemoDetails) getListAdapter().getItem(position); startActivity(new Intent(this, demo.activityClass)); } }