Bookmarks are used for easily storing and accessing saved locations on the map. Bookmarks are of interest in educational apps (e.g. touring historical sites) or more specifically, for a land management company wishing to visually monitor flood levels over time at a particular location. These locations can be saved as bookmarks and revisited easily each time their basemap data has been updated (e.g. working with up to date satellite imagery to monitor water levels).
How to use the sample
The map in the sample comes pre-populated with a set of bookmarks. To access a bookmark and move to that location, tap on a bookmark's name from the list. To add a bookmark, pan and/or zoom to a new location and tap on the 'Add Bookmark' button. Enter a unique name for the bookmark and tap ok, and the bookmark will be added to the list
How it works
Instantiate a new ArcGISMap object and create a BookmarkList with ArcGISMap.getBookmarks().
To create a new bookmark and add it to the bookmark list:
Instantiate a new Bookmark object passing in text (the name of the bookmark) and a Viewpoint as parameters.
Add the new bookmark to the book mark list with BookmarkList.add(bookmark).
Relevant API
Bookmark
BookmarkList
Viewpoint
Tags
bookmark, extent, location, zoom
Sample Code
MainActivity.java
/* Copyright 2016 Esri
*
* 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.esri.arcgisruntime.sample.managebookmarks;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.os.Bundle;
import android.text.InputType;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.Toast;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.BasemapStyle;
import com.esri.arcgisruntime.mapping.Bookmark;
import com.esri.arcgisruntime.mapping.BookmarkList;
import com.esri.arcgisruntime.mapping.Viewpoint;
import com.esri.arcgisruntime.mapping.view.MapView;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
publicclassMainActivityextendsAppCompatActivity{
private MapView mMapView;
private BookmarkList mBookmarks;
private List<String> mBookmarksSpinnerList;
private Bookmark mBookmark;
private ArrayAdapter<String> mDataAdapter;
@OverrideprotectedvoidonCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// authentication with an API key or named user is required to access basemaps and other// location services ArcGISRuntimeEnvironment.setApiKey(BuildConfig.API_KEY);
// inflate MapView from layout mMapView = findViewById(R.id.mapView);
// create a map with the BasemapType imagery with labels ArcGISMap mMap = new ArcGISMap(BasemapStyle.ARCGIS_IMAGERY);
// set the map to be displayed in this view mMapView.setMap(mMap);
// inflate the floating action button FloatingActionButton addBookmarkFab = findViewById(R.id.addbookmarkFAB);
// show the dialog for acquiring bookmark name from the user addBookmarkFab.setOnClickListener(v -> showDialog(v.getContext()));
// get the maps BookmarkList mBookmarks = mMap.getBookmarks();
// add some default bookmarks to the map addDefaultBookmarks();
// populate the spinner list with default bookmark names Spinner bookmarksSpinner = findViewById(R.id.bookmarksspinner);
mBookmarksSpinnerList = new ArrayList<>();
mBookmarksSpinnerList.add(mBookmarks.get(0).getName());
mBookmarksSpinnerList.add(mBookmarks.get(1).getName());
mBookmarksSpinnerList.add(mBookmarks.get(2).getName());
mBookmarksSpinnerList.add(mBookmarks.get(3).getName());
// initialize the adapter for the bookmarks spinner mDataAdapter = new ArrayAdapter<>(this, android.R.layout.simple_spinner_item, mBookmarksSpinnerList);
mDataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
bookmarksSpinner.setAdapter(mDataAdapter);
// when an item is selected in the spinner set the mapview viewpoint to the selected bookmark's viewpoint bookmarksSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@OverridepublicvoidonItemSelected(AdapterView<?> parent, View view, int position, long id){
mMapView.setBookmarkAsync(mBookmarks.get(position));
}
@OverridepublicvoidonNothingSelected(AdapterView<?> parent){
}
});
}
/**
* adds the default bookmarks to the maps BookmarkList
*/privatevoidaddDefaultBookmarks(){
Viewpoint viewpoint;
//Mysterious Desert Pattern viewpoint = new Viewpoint(27.3805833, 33.6321389, 6e3);
mBookmark = new Bookmark(getResources().getString(R.string.desert_pattern), viewpoint);
mBookmarks.add(mBookmark);
// Set the viewpoint to the default bookmark selected in the spinner mMapView.setBookmarkAsync(mBookmarks.get(0));
//Strange Symbol viewpoint = new Viewpoint(37.401573, -116.867808, 6e3);
mBookmark = new Bookmark(getResources().getString(R.string.strange_symbol), viewpoint);
mBookmarks.add(mBookmark);
//Guitar-Shaped Trees viewpoint = new Viewpoint(-33.867886, -63.985, 4e4);
mBookmark = new Bookmark(getResources().getString(R.string.guitar_trees), viewpoint);
mBookmarks.add(mBookmark);
//Grand Prismatic Spring viewpoint = new Viewpoint(44.525049, -110.83819, 6e3);
mBookmark = new Bookmark(getResources().getString(R.string.prismatic_spring), viewpoint);
mBookmarks.add(mBookmark);
}
/**
* add a new bookmark at the location being displayed in the MapView's current Viewpoint
*
* @param Name of the new bookmark
*/privatevoidaddBookmark(String Name){
mBookmark = new Bookmark(Name, mMapView.getCurrentViewpoint(Viewpoint.Type.BOUNDING_GEOMETRY));
mBookmarks.add(mBookmark);
mBookmarksSpinnerList.add(Name);
mDataAdapter.notifyDataSetChanged();
}
/**
* shows dialog that prompts user to add a name for the new Bookmark
*/privatevoidshowDialog(Context context){
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle(getResources().getString(R.string.alert_dialog_title));
// Set up the inputfinal EditText input = new EditText(this);
input.setInputType(InputType.TYPE_CLASS_TEXT);
builder.setView(input);
// Set up the buttons builder.setPositiveButton("OK", (dialog, which) -> {
// get the input from EditText String bookmarkName = input.getText().toString();
// check if EditText is not empty & bookmark name has not been usedif (bookmarkName.length() > 0 && !mBookmarksSpinnerList.contains(bookmarkName)) {
addBookmark(bookmarkName);
} else {
// display toast explaining bookmark not set Toast.makeText(getApplicationContext(), getResources().getString(R.string.bookmark_not_saved),
Toast.LENGTH_LONG).show();
dialog.cancel();
}
});
builder.setNegativeButton("Cancel", (dialog, which) -> dialog.cancel());
builder.show();
}
@OverrideprotectedvoidonPause(){
super.onPause();
mMapView.pause();
}
@OverrideprotectedvoidonResume(){
super.onResume();
mMapView.resume();
}
@OverrideprotectedvoidonDestroy(){
super.onDestroy();
mMapView.dispose();
}
}