Programmatically navigate to a specified location in the map or scene. Use this to focus on a particular point or area of interest.
How to use the sample
The map view has several methods for setting its current viewpoint. Select a viewpoint from the UI to see the viewpoint changed using that method.
How it works
Create a new ArcGISMap object and set it to the MapView object.
Change the map's Viewpoint using one of the available methods:
Use MapView.setViewpointAsync() to pan to a viewpoint over the specified length of time.
Use MapView.setViewpointCenterAsync() to center the viewpoint on a Point and set a distance from the ground using a scale.
Use MapView.setViewpointGeometryAsync() to set the viewpoint to a given Geometry.
Relevant API
ArcGISMap
Geometry
MapView
Point
Viewpoint
Additional information
Below are some other ways to set a viewpoint:
setViewpoint
setViewpointAsync
setViewpointCenterAsync
setViewpointGeometryAsync
setViewpointRotationAsync
setViewpointScaleAsync
Tags
animate, extent, pan, rotate, scale, view, zoom
Sample Code
MainActivity.java
Use dark colors for code blocksCopy
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
/* 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.changeviewpoint;
import android.os.Bundle;
import android.view.View;
import androidx.appcompat.app.AppCompatActivity;
import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.geometry.PointCollection;
import com.esri.arcgisruntime.geometry.Polyline;
import com.esri.arcgisruntime.geometry.SpatialReferences;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.BasemapStyle;
import com.esri.arcgisruntime.mapping.Viewpoint;
import com.esri.arcgisruntime.mapping.view.MapView;
publicclassMainActivityextendsAppCompatActivity{
privatestaticfinalint SCALE = 5000;
private MapView mMapView;
@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 an imagery base map ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_IMAGERY);
// set the map to be displayed in this view mMapView.setMap(map);
mMapView.setViewpoint(new Viewpoint(new Point(-14093.0, 6711377.0, SpatialReferences.getWebMercator()), SCALE));
}
publicvoidonAnimateClicked(View view){
// create the London location point Point londonPoint = new Point(-14093.0, 6711377.0, SpatialReferences.getWebMercator());
// create the viewpoint with the London point and scale Viewpoint viewpoint = new Viewpoint(londonPoint, SCALE);
// set the map view's viewpoint to London with a seven second animation duration mMapView.setViewpointAsync(viewpoint, 7f);
}
publicvoidonCenterClicked(View view){
// create the Waterloo location point Point waterlooPoint = new Point(-12153.0, 6710527.0, SpatialReferences.getWebMercator());
// set the map view's viewpoint centered on Waterloo and scaled mMapView.setViewpointCenterAsync(waterlooPoint, SCALE);
}
publicvoidonGeometryClicked(View view){
// create a collection of points around Westminster PointCollection westminsterPoints = new PointCollection(SpatialReferences.getWebMercator());
westminsterPoints.add(new Point(-13823.0, 6710390.0));
westminsterPoints.add(new Point(-13823.0, 6710150.0));
westminsterPoints.add(new Point(-14680.0, 6710390.0));
westminsterPoints.add(new Point(-14680.0, 6710150.0));
Polyline geometry = new Polyline(westminsterPoints);
// set the map view's viewpoint to Westminster mMapView.setViewpointGeometryAsync(geometry);
}
@OverrideprotectedvoidonPause(){
super.onPause();
mMapView.pause();
}
@OverrideprotectedvoidonResume(){
super.onResume();
mMapView.resume();
}
@OverrideprotectedvoidonDestroy(){
super.onDestroy();
mMapView.dispose();
}
}