Java tutorial
/* * Copyright 2013 Google Inc. * * 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.google.android.apps.mytracks.fragments; import com.google.android.apps.mytracks.MarkerEditActivity; import com.google.android.apps.mytracks.TrackDetailActivity; import com.google.android.apps.mytracks.content.MyTracksProviderUtils; import com.google.android.apps.mytracks.content.Track; import com.google.android.apps.mytracks.content.Waypoint; import com.google.android.apps.mytracks.content.Waypoint.WaypointType; import com.google.android.apps.mytracks.util.CalorieUtils; import com.google.android.apps.mytracks.util.CalorieUtils.ActivityType; import com.google.android.apps.mytracks.util.IntentUtils; import com.google.android.apps.mytracks.util.ListItemUtils; import com.google.android.apps.mytracks.util.PhotoUtils; import com.google.android.apps.mytracks.util.StatsUtils; import com.google.android.apps.mytracks.util.StringUtils; import com.google.android.apps.mytracks.util.TrackIconUtils; import com.google.android.maps.mytracks.R; import android.content.Intent; import android.location.Location; import android.net.Uri; import android.os.Bundle; import android.os.Handler; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.util.Log; import android.view.Display; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.view.animation.Animation; import android.view.animation.Animation.AnimationListener; import android.view.animation.AnimationUtils; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.TextView; /** * A fragment to show marker details. * * @author Jimmy Shih */ public class MarkerDetailFragment extends Fragment { public static MarkerDetailFragment newInstance(long markerId, String title) { Bundle bundle = new Bundle(); bundle.putLong(KEY_MARKER_ID, markerId); bundle.putString(KEY_TITLE, title); MarkerDetailFragment fragment = new MarkerDetailFragment(); fragment.setArguments(bundle); return fragment; } private static final String TAG = MarkerDetailFragment.class.getSimpleName(); private static final String KEY_MARKER_ID = "markerId"; private static final String KEY_TITLE = "title"; private static final long HIDE_TEXT_DELAY = 4000L; // 4 seconds private MyTracksProviderUtils myTracksProviderUtils; private Handler handler; private ImageView photo; private ImageView textGradient; private LinearLayout waypointInfo; private Waypoint waypoint; private Runnable hideText = new Runnable() { @Override public void run() { Animation animation = AnimationUtils.loadAnimation(getActivity(), R.anim.fadeout); animation.setAnimationListener(new AnimationListener() { @Override public void onAnimationStart(Animation anim) { } @Override public void onAnimationRepeat(Animation anim) { } @Override public void onAnimationEnd(Animation anim) { textGradient.setVisibility(View.GONE); waypointInfo.setVisibility(View.GONE); } }); textGradient.startAnimation(animation); waypointInfo.startAnimation(animation); } }; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); long markerId = getArguments().getLong(KEY_MARKER_ID); if (markerId == -1L) { Log.d(TAG, "invalid marker id"); getFragmentManager().popBackStack(); return; } myTracksProviderUtils = MyTracksProviderUtils.Factory.get(getActivity()); handler = new Handler(); setHasOptionsMenu(true); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.marker_detail_fragment, container, false); photo = (ImageView) view.findViewById(R.id.marker_detail_waypoint_photo); textGradient = (ImageView) view.findViewById(R.id.marker_detail_waypoint_text_gradient); waypointInfo = (LinearLayout) view.findViewById(R.id.marker_detail_waypoint_info); photo.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { handler.removeCallbacks(hideText); int visibility = waypointInfo.getVisibility() == View.GONE ? View.VISIBLE : View.GONE; textGradient.setVisibility(visibility); waypointInfo.setVisibility(visibility); if (visibility == View.VISIBLE) { handler.postDelayed(hideText, HIDE_TEXT_DELAY); } } }); return view; }; @Override public void onResume() { super.onResume(); // Need to update the waypoint in case returning after an edit updateWaypoint(true); updateUi(); } @Override public void onPause() { super.onPause(); handler.removeCallbacks(hideText); } @Override public void setUserVisibleHint(boolean isVisibleToUser) { super.setUserVisibleHint(isVisibleToUser); if (isVisibleToUser) { getActivity().setTitle(getArguments().getString(KEY_TITLE)); } } @Override public void setMenuVisibility(boolean menuVisible) { super.setMenuVisibility(menuVisible); /* * View pager caches the neighboring fragments in the resumed state. If * becoming visible from the resumed state, update the UI to display the * text above the image. */ if (isResumed()) { if (menuVisible) { updateUi(); } else { handler.removeCallbacks(hideText); } } } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { inflater.inflate(R.menu.marker_detail, menu); updateWaypoint(false); Track track = myTracksProviderUtils.getTrack(waypoint.getTrackId()); boolean isSharedWithMe = track != null ? track.isSharedWithMe() : true; menu.findItem(R.id.marker_detail_edit).setVisible(!isSharedWithMe); menu.findItem(R.id.marker_detail_delete).setVisible(!isSharedWithMe); String photoUrl = waypoint.getPhotoUrl(); boolean hasPhoto = photoUrl != null && !photoUrl.equals(""); menu.findItem(R.id.marker_detail_view_photo).setVisible(hasPhoto); TrackIconUtils.setMenuIconColor(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { long markerId = getArguments().getLong(KEY_MARKER_ID); FragmentActivity fragmentActivity = getActivity(); Intent intent; switch (item.getItemId()) { case R.id.marker_detail_show_on_map: intent = IntentUtils.newIntent(fragmentActivity, TrackDetailActivity.class) .putExtra(TrackDetailActivity.EXTRA_MARKER_ID, markerId); startActivity(intent); return true; case R.id.marker_detail_edit: intent = IntentUtils.newIntent(fragmentActivity, MarkerEditActivity.class) .putExtra(MarkerEditActivity.EXTRA_MARKER_ID, markerId); startActivity(intent); return true; case R.id.marker_detail_delete: DeleteMarkerDialogFragment.newInstance(new long[] { markerId }).show(getChildFragmentManager(), DeleteMarkerDialogFragment.DELETE_MARKER_DIALOG_TAG); return true; case R.id.marker_detail_view_photo: intent = new Intent(); intent.setAction(Intent.ACTION_VIEW); intent.setDataAndType(Uri.parse(waypoint.getPhotoUrl()), "image/*"); startActivity(intent); return true; default: return super.onOptionsItemSelected(item); } } /** * Updates the waypoint. * * @param refresh true to always update */ private void updateWaypoint(boolean refresh) { if (refresh || waypoint == null) { waypoint = myTracksProviderUtils.getWaypoint(getArguments().getLong(KEY_MARKER_ID)); if (waypoint == null) { Log.d(TAG, "waypoint is null"); getFragmentManager().popBackStack(); } } } /** * Updates the UI. */ @SuppressWarnings("deprecation") private void updateUi() { View waypointView = getView().findViewById(R.id.marker_detail_waypoint); View statisticsView = getView().findViewById(R.id.marker_detail_statistics); boolean isWaypoint = waypoint.getType() == WaypointType.WAYPOINT; waypointView.setVisibility(isWaypoint ? View.VISIBLE : View.GONE); statisticsView.setVisibility(isWaypoint ? View.GONE : View.VISIBLE); if (isWaypoint) { String photoUrl = waypoint.getPhotoUrl(); boolean hasPhoto = photoUrl != null && !photoUrl.equals(""); photo.setVisibility(hasPhoto ? View.VISIBLE : View.GONE); textGradient.setVisibility(hasPhoto ? View.VISIBLE : View.GONE); waypointInfo.setVisibility(View.VISIBLE); if (hasPhoto) { handler.removeCallbacks(hideText); Display defaultDisplay = getActivity().getWindowManager().getDefaultDisplay(); PhotoUtils.setImageVew(photo, Uri.parse(photoUrl), defaultDisplay.getWidth(), defaultDisplay.getHeight(), true); handler.postDelayed(hideText, HIDE_TEXT_DELAY); } setName(R.id.marker_detail_waypoint_name, hasPhoto); TextView category = (TextView) getView().findViewById(R.id.marker_detail_waypoint_category); ListItemUtils.setTextView(getActivity(), category, StringUtils.getCategory(waypoint.getCategory()), hasPhoto); TextView description = (TextView) getView().findViewById(R.id.marker_detail_waypoint_description); ListItemUtils.setTextView(getActivity(), description, waypoint.getDescription(), hasPhoto); setLocation(R.id.marker_detail_waypoint_location, hasPhoto); } else { setName(R.id.marker_detail_statistics_name, false); setLocation(R.id.marker_detail_statistics_location, false); Track track = myTracksProviderUtils.getTrack(waypoint.getTrackId()); ActivityType activityType = track != null ? CalorieUtils.getActivityType(getActivity(), track.getCategory()) : ActivityType.INVALID; StatsUtils.setTripStatisticsValues(getActivity(), null, getView(), waypoint.getTripStatistics(), activityType, null); StatsUtils.setLocationValues(getActivity(), null, getView(), waypoint.getLocation(), false); } } private void setName(int resId, boolean addShadow) { TextView textView = (TextView) getView().findViewById(resId); ListItemUtils.setTextView(getActivity(), textView, waypoint.getName(), addShadow); } private void setLocation(int resId, boolean addShadow) { TextView textView = (TextView) getView().findViewById(resId); Location location = waypoint.getLocation(); String value; if (location == null) { value = null; } else { value = "[" + getString(R.string.stats_latitude) + " " + StringUtils.formatCoordinate(location.getLatitude()) + ", " + getString(R.string.stats_longitude) + " " + StringUtils.formatCoordinate(location.getLongitude()) + "]"; } ListItemUtils.setTextView(getActivity(), textView, value, addShadow); } }