Let\u2019s take a closer look:\n<\/p>\n
1. Create a Google Maps API key<\/h2>\n
To begin with, we should create a new Google Maps API key and subscribe our application in order to grant access for our application to succesfully use Google Maps v2. In order to use this API, we will have to enter the Google API console portal. If you do not have an account, just create one or login with your current Google account.<\/p>\n
After we enter the console, we are going to see the full list, of all the APIs that Google serves. Now we can see the enabled APIs that this console user has.<\/p>\n After we enter the console,we are going to see the full list, of all the APIs that Google serves. The API that we are going to use, is the Google Maps v2 API. We click on the right service, and we turn it on. We have to accept the terms of Google Maps v2 API, by ticking the checkbox and by clicking the \u201cAccept\u201d button.<\/p>\n We should see the Google Maps v2 API enabled.<\/p>\n We are going to create a Public API access credential, in order to take the right response from the Google Places API search call. We only have to go to APIs&auth > Credentials tab.<\/p>\n We click the \u201cCreate new Key\u201d button, and select the \u201cAndroid Key\u201d in order to make a Key that will both work from our Android Application and from our browser. We are going to do this, exclusively for our example scope.<\/p>\n Tip<\/strong><\/p>\n If you want to publish an application to the Google Play Store, that uses any of these Google API calls, you should create an Android key, by using the SHA-1 key of your original keystore (not the debug one) of the application to be exported.<\/p>\n<\/div>\n We are going to do this, exclusively for our application scope. So we have to provide our application\u2019s name and package. We have also to fill the SHA-1 cerificate fingerprint.<\/p>\n If you are not familiar on how to get your SHA-1 cerificate fingerprint, the easiest way to reach this certificate, is inside your Eclipse IDE, from Window > Preferences > Android > Build.<\/p>\n Tip<\/strong><\/p>\n You may skip project creation and jump directly to the beginning of the example<\/strong><\/a> below.<\/p>\n<\/div>\n Open Eclipse IDE and go to File \u2192 New \u2192 Project \u2192 Android Application Project.<\/p>\n Specify the name of the application, the project and the package and then click Next.<\/p>\n In the next window, the \u201cCreate Activity\u201d option should be checked. The new created activity will be the main activity of your project. Then press Next button.<\/p>\n In \u201cConfigure Launcher Icon\u201d window you should choose the icon you want to have in your app. We will use the default icon of android, so click Next.<\/p>\n Select the \u201cBlank Activity\u201d option and press Next.<\/p>\n You have to specify a name for the new Activity and a name for the layout description of your app. The .xml file for the layout will automatically be created in the res\/layout folder. It will also be created a fragment layout xml, that we are not going to use in this project and you can remove it if you want. Then press Finish.<\/p>\n Here you can see, how will the structure of the project become when finished:<\/p>\n <\/p>\n In order to be able to work with Google Maps v2, we have to import the Google Play Services library in the project.<\/p>\n Tip<\/strong><\/p>\n Google Maps v2 will work only on devices that do have Google Play Services. If your mobile device does not have Google Play Services you have to download and use the Google Play Services application from Google Play.<\/p>\n<\/div>\n Download Google Play Services SDK. We have to launch Android SDK Manager and install the Google Play services package.<\/p>\n After downloading the Google Play Service package, just import this project into the main Android Google Maps v2 project.<\/p>\n <\/p>\n We are going to make a simple layout xml for the Open activity_main.xml<\/span><\/em><\/p>\n Open AndroidGoogleMapsActivity.java<\/span><\/em><\/p>\n Let’s take a closer look:<\/p>\n With this method With the method above, we initialize the map Ui settings, we set the compass, the gestures, the tilt gestures, the zoom controls and the button that centers us to our location spot.<\/p>\n With the method above, we enable the blue location spot, that shows our position on the map.<\/p>\n With the method above, we enable the traffic lines layer on the map.<\/p>\n With the method above, we set the Map Type to the With the method above, we initialize the Map View settings, meaning the basic view map and buildings settings.<\/p>\n With the above method, we want to zoom the map, at a zoom that we will be able to view every marker that we added on the map. So, this is method to help us fit an array of Markers into specific bounds for camera position.<\/p>\n We are going to create the Open CustomMarker.java<\/span><\/em><\/p>\n As you can see below, we have added an id attribute in our helper class, in order to have an identifier for our CustomMarker. This will help us find the right marker that we have created and change, or remove it separately.<\/p>\n Open LatLngInterpolator.java<\/span><\/em><\/p>\n Open MarkerAnimation.java<\/span><\/em><\/p>\n In order to make our map visible, we should have access to the Internet. This must be specified in the manifest, so that, our application will be granted the permission to use the Internet connection, with INTERNET<\/strong>, ACCESS_NETWORK_STATE<\/strong> and WRITE_EXTERNAL_STORAGE<\/strong>. Also, a good idea is to give permission ACCESS_COARSE_LOCATION<\/strong> and ACCESS_FINE_LOCATION<\/strong> for better Location results.<\/p>\n Also, in order to add and use the Google Play Services library, we have to add the specific The AndroidManifest.xml of our project is simple and contains the permissions:<\/p>\n AndroidManifest.xml<\/span><\/em><\/p>\n When we build, compile and run our project, the main AndroidGoogleMapsExample should look like this:<\/p>\n This was the example of Android Google Maps v2.<\/p>\n![\"Figure](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2015\/01\/AndroidGooglePlusLoginExample-7.jpg\")
<\/a><\/a><\/p>\n<\/a><\/a><\/a><\/a><\/a><\/a>2. Create a New Android Application Project<\/h2>\n
<\/a><\/a><\/a><\/a><\/a><\/a><\/a>3. Importing Google Play Services in your project<\/h2>\n
<\/a>
\n<\/a>
\n<\/a>
\n<\/a><\/a><\/p>\n3. Create the layout of the main Google Maps v2<\/h2>\n
AndroidGoogleMapsExample.java<\/code>, that consists of a parent RelativeLayout<\/code> and a child LinearLayout<\/code> with vertical orientation, that includes a Google Map Fragment<\/code> and a horizontal LinearLayout<\/code> that includes 3 Buttons<\/code> that lister to the corresponding actions.<\/p>\nres\/layout\/activity_main.xml<\/code>, go to the respective xml tab and paste the following:<\/p>\n<RelativeLayout xmlns:android=\"http:\/\/schemas.android.com\/apk\/res\/android\"\n xmlns:tools=\"http:\/\/schemas.android.com\/tools\"\n android:layout_width=\"match_parent\"\n android:layout_height=\"match_parent\"\n tools:context=\"com.javacodegeeks.androidgooglemapsexample.AndroidGoogleMapsActivity\" >\n\n <LinearLayout\n android:layout_width=\"fill_parent\"\n android:layout_height=\"fill_parent\"\n android:orientation=\"vertical\" >\n\n <fragment\n android:id=\"@+id\/mapFragment\"\n android:layout_width=\"fill_parent\"\n android:layout_height=\"0dp\"\n android:layout_weight=\"1\"\n class=\"com.google.android.gms.maps.SupportMapFragment\" \/>\n\n <LinearLayout\n android:layout_width=\"fill_parent\"\n android:layout_height=\"wrap_content\"\n android:gravity=\"center\"\n android:orientation=\"horizontal\" >\n\n <Button\n android:id=\"@+id\/button1\"\n android:layout_width=\"0dp\"\n android:layout_height=\"fill_parent\"\n android:layout_weight=\"1\"\n android:onClick=\"startAnimation\"\n android:text=\"Animate Marker\" \/>\n\n <Button\n android:id=\"@+id\/button2\"\n android:layout_width=\"0dp\"\n android:layout_height=\"fill_parent\"\n android:layout_weight=\"1\"\n android:onClick=\"zoomToMarkers\"\n android:text=\"Zoom to markers\" \/>\n\n <Button\n android:id=\"@+id\/button3\"\n android:layout_width=\"0dp\"\n android:layout_height=\"fill_parent\"\n android:layout_weight=\"1\"\n android:onClick=\"animateBack\"\n android:text=\"Animate back to position\" \/>\n <\/LinearLayout>\n <\/LinearLayout>\n\n<\/RelativeLayout>\n<\/pre>\n
4. Create the source code of the main AndroidGoogleMapsActivity<\/h2>\n
src\/com.javacodegeeks.androidgooglemapsexample\/AndroidGoogleMapsActivity.java<\/code> file and paste the code below.<\/p>\npackage com.javacodegeeks.androidgooglemapsexample;\n\nimport java.util.ArrayList;\nimport java.util.HashMap;\nimport java.util.Iterator;\nimport java.util.Map;\nimport java.util.Map.Entry;\n\nimport android.os.Bundle;\nimport android.support.v4.app.FragmentActivity;\nimport android.view.View;\nimport android.widget.Toast;\n\nimport com.google.android.gms.maps.CameraUpdate;\nimport com.google.android.gms.maps.CameraUpdateFactory;\nimport com.google.android.gms.maps.GoogleMap;\nimport com.google.android.gms.maps.SupportMapFragment;\nimport com.google.android.gms.maps.model.BitmapDescriptorFactory;\nimport com.google.android.gms.maps.model.LatLng;\nimport com.google.android.gms.maps.model.LatLngBounds;\nimport com.google.android.gms.maps.model.Marker;\nimport com.google.android.gms.maps.model.MarkerOptions;\nimport com.javacodegeeks.androidgooglemapsexample.LatLngInterpolator.LinearFixed;\n\npublic class AndroidGoogleMapsActivity extends FragmentActivity {\n\n\t\/\/ Google Map\n\tprivate GoogleMap googleMap;\n\tprivate HashMap markersHashMap;\n\tprivate Iterator<Entry> iter;\n\tprivate CameraUpdate cu;\n\tprivate CustomMarker customMarkerOne, customMarkerTwo;\n\n\t@Override\n\tprotected void onCreate(Bundle savedInstanceState) {\n\t\tsuper.onCreate(savedInstanceState);\n\t\tsetContentView(R.layout.activity_main);\n\n\t\ttry {\n\t\t\t\/\/ Loading map\n\t\t\tinitilizeMap();\n\t\t\tinitializeUiSettings();\n\t\t\tinitializeMapLocationSettings();\n\t\t\tinitializeMapTraffic();\n\t\t\tinitializeMapType();\n\t\t\tinitializeMapViewSettings();\n\n\t\t} catch (Exception e) {\n\t\t\te.printStackTrace();\n\t\t}\n\t}\n\n\t@Override\n\tprotected void onResume() {\n\t\tsuper.onResume();\n\t\t\/\/ initilizeMap();\n\t}\n\n\tprivate void initilizeMap() {\n\n\t\tgoogleMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.mapFragment)).getMap();\n\n\t\t\/\/ check if map is created successfully or not\n\t\tif (googleMap == null) {\n\t\t\tToast.makeText(getApplicationContext(), \"Sorry! unable to create maps\", Toast.LENGTH_SHORT).show();\n\t\t}\n\n\t\t(findViewById(R.id.mapFragment)).getViewTreeObserver().addOnGlobalLayoutListener(\n\t\t\t\tnew android.view.ViewTreeObserver.OnGlobalLayoutListener() {\n\n\t\t\t\t\t@Override\n\t\t\t\t\tpublic void onGlobalLayout() {\n\t\t\t\t\t\tif (android.os.Build.VERSION.SDK_INT >= 16) {\n\t\t\t\t\t\t\t(findViewById(R.id.mapFragment)).getViewTreeObserver().removeOnGlobalLayoutListener(this);\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t(findViewById(R.id.mapFragment)).getViewTreeObserver().removeGlobalOnLayoutListener(this);\n\t\t\t\t\t\t}\n\t\t\t\t\t\tsetCustomMarkerOnePosition();\n\t\t\t\t\t\tsetCustomMarkerTwoPosition();\n\t\t\t\t\t}\n\t\t\t\t});\n\t}\n\n\tvoid setCustomMarkerOnePosition() {\n\t\tcustomMarkerOne = new CustomMarker(\"markerOne\", 40.7102747, -73.9945297);\n\t\taddMarker(customMarkerOne);\n\t}\n\n\tvoid setCustomMarkerTwoPosition() {\n\t\tcustomMarkerTwo = new CustomMarker(\"markerTwo\", 43.7297251, -74.0675716);\n\t\taddMarker(customMarkerTwo);\n\t}\n\n\tpublic void startAnimation(View v) {\n\t\tanimateMarker(customMarkerOne, new LatLng(40.0675716, 40.7297251));\n\t}\n\n\tpublic void zoomToMarkers(View v) {\n\t\tzoomAnimateLevelToFitMarkers(120);\n\t}\n\n\tpublic void animateBack(View v) {\n\t\tanimateMarker(customMarkerOne, new LatLng(32.0675716, 27.7297251));\n\t}\n\n\tpublic void initializeUiSettings() {\n\t\tgoogleMap.getUiSettings().setCompassEnabled(true);\n\t\tgoogleMap.getUiSettings().setRotateGesturesEnabled(false);\n\t\tgoogleMap.getUiSettings().setTiltGesturesEnabled(true);\n\t\tgoogleMap.getUiSettings().setZoomControlsEnabled(true);\n\t\tgoogleMap.getUiSettings().setMyLocationButtonEnabled(true);\n\t}\n\n\tpublic void initializeMapLocationSettings() {\n\t\tgoogleMap.setMyLocationEnabled(true);\n\t}\n\n\tpublic void initializeMapTraffic() {\n\t\tgoogleMap.setTrafficEnabled(true);\n\t}\n\n\tpublic void initializeMapType() {\n\t\tgoogleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);\n\t}\n\n\t\n\tpublic void initializeMapViewSettings() {\n\t\tgoogleMap.setIndoorEnabled(true);\n\t\tgoogleMap.setBuildingsEnabled(false);\n\t}\n\t\n\n\t\/\/this is method to help us set up a Marker that stores the Markers we want to plot on the map\n\tpublic void setUpMarkersHashMap() {\n\t\tif (markersHashMap == null) {\n\t\t\tmarkersHashMap = new HashMap();\n\t\t}\n\t}\n\t\n\t\/\/this is method to help us add a Marker into the hashmap that stores the Markers\n\tpublic void addMarkerToHashMap(CustomMarker customMarker, Marker marker) {\n\t\tsetUpMarkersHashMap();\n\t\tmarkersHashMap.put(customMarker, marker);\n\t}\n\n\t\/\/this is method to help us find a Marker that is stored into the hashmap\n\tpublic Marker findMarker(CustomMarker customMarker) {\n\t\titer = markersHashMap.entrySet().iterator();\n\t\twhile (iter.hasNext()) {\n\t\t\tMap.Entry mEntry = (Map.Entry) iter.next();\n\t\t\tCustomMarker key = (CustomMarker) mEntry.getKey();\n\t\t\tif (customMarker.getCustomMarkerId().equals(key.getCustomMarkerId())) {\n\t\t\t\tMarker value = (Marker) mEntry.getValue();\n\t\t\t\treturn value;\n\t\t\t}\n\t\t}\n\t\treturn null;\n\t}\n\n\n\t\/\/this is method to help us add a Marker to the map\n\tpublic void addMarker(CustomMarker customMarker) {\n\t\tMarkerOptions markerOption = new MarkerOptions().position(\n\t\t\t\tnew LatLng(customMarker.getCustomMarkerLatitude(), customMarker.getCustomMarkerLongitude())).icon(\n\t\t\t\tBitmapDescriptorFactory.defaultMarker());\n\n\t\tMarker newMark = googleMap.addMarker(markerOption);\n\t\taddMarkerToHashMap(customMarker, newMark);\n\t}\n\t\n\t\/\/this is method to help us remove a Marker\n\tpublic void removeMarker(CustomMarker customMarker) {\n\t\tif (markersHashMap != null) {\n\t\t\tif (findMarker(customMarker) != null) {\n\t\t\t\tfindMarker(customMarker).remove();\n\t\t\t\tmarkersHashMap.remove(customMarker);\n\t\t\t}\n\t\t}\n\t}\n\n\t\/\/this is method to help us fit the Markers into specific bounds for camera position\n\tpublic void zoomAnimateLevelToFitMarkers(int padding) {\n\t\tLatLngBounds.Builder b = new LatLngBounds.Builder();\n\t\titer = markersHashMap.entrySet().iterator();\n\n\t\twhile (iter.hasNext()) {\n\t\t\tMap.Entry mEntry = (Map.Entry) iter.next();\n\t\t\tCustomMarker key = (CustomMarker) mEntry.getKey();\n\t\t\tLatLng ll = new LatLng(key.getCustomMarkerLatitude(), key.getCustomMarkerLongitude());\n\t\t\tb.include(ll);\n\t\t}\n\t\tLatLngBounds bounds = b.build();\n\n\t\t\/\/ Change the padding as per needed\n\t\tcu = CameraUpdateFactory.newLatLngBounds(bounds, padding);\n\t\tgoogleMap.animateCamera(cu);\n\t}\n\n\t\/\/this is method to help us move a Marker.\n\tpublic void moveMarker(CustomMarker customMarker, LatLng latlng) {\n\t\tif (findMarker(customMarker) != null) {\n\t\t\tfindMarker(customMarker).setPosition(latlng);\n\t\t\tcustomMarker.setCustomMarkerLatitude(latlng.latitude);\n\t\t\tcustomMarker.setCustomMarkerLongitude(latlng.longitude);\n\t\t}\n\t}\n\n\t\/\/this is method to animate the Marker. There are flavours for all Android versions\n\tpublic void animateMarker(CustomMarker customMarker, LatLng latlng) {\n\t\tif (findMarker(customMarker) != null) {\n\n\t\t\tLatLngInterpolator latlonInter = new LinearFixed();\n\t\t\tlatlonInter.interpolate(20,\n\t\t\t\t\tnew LatLng(customMarker.getCustomMarkerLatitude(), customMarker.getCustomMarkerLongitude()), latlng);\n\n\t\t\tcustomMarker.setCustomMarkerLatitude(latlng.latitude);\n\t\t\tcustomMarker.setCustomMarkerLongitude(latlng.longitude);\n\n\t\t\tif (android.os.Build.VERSION.SDK_INT >= 14) {\n\t\t\t\tMarkerAnimation.animateMarkerToICS(findMarker(customMarker), new LatLng(customMarker.getCustomMarkerLatitude(),\n\t\t\t\t\t\tcustomMarker.getCustomMarkerLongitude()), latlonInter);\n\t\t\t} else if (android.os.Build.VERSION.SDK_INT >= 11) {\n\t\t\t\tMarkerAnimation.animateMarkerToHC(findMarker(customMarker), new LatLng(customMarker.getCustomMarkerLatitude(),\n\t\t\t\t\t\tcustomMarker.getCustomMarkerLongitude()), latlonInter);\n\t\t\t} else {\n\t\t\t\tMarkerAnimation.animateMarkerToGB(findMarker(customMarker), new LatLng(customMarker.getCustomMarkerLatitude(),\n\t\t\t\t\t\tcustomMarker.getCustomMarkerLongitude()), latlonInter);\n\t\t\t}\n\t\t}\n\t}\n\n}\n<\/pre>\n\tprivate void initilizeMap() {\n\n\t\tgoogleMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.mapFragment)).getMap();\n\n\t\tif (googleMap == null) {\n\t\t\tToast.makeText(getApplicationContext(), \"Sorry! unable to create maps\", Toast.LENGTH_SHORT).show();\n\t\t}\n\n\t\t(findViewById(R.id.mapFragment)).getViewTreeObserver().addOnGlobalLayoutListener(\n\t\t\t\tnew android.view.ViewTreeObserver.OnGlobalLayoutListener() {\n\n\t\t\t\t\t@Override\n\t\t\t\t\tpublic void onGlobalLayout() {\n\t\t\t\t\t\t\/\/ gets called after layout has been done but before display\n\t\t\t\t\t\t\/\/ so we can get the height then hide the view\n\t\t\t\t\t\tif (android.os.Build.VERSION.SDK_INT >= 16) {\n\t\t\t\t\t\t\t(findViewById(R.id.mapFragment)).getViewTreeObserver().removeOnGlobalLayoutListener(this);\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t(findViewById(R.id.mapFragment)).getViewTreeObserver().removeGlobalOnLayoutListener(this);\n\t\t\t\t\t\t}\n\t\t\t\t\t\tsetCustomMarkerOnePosition();\n\t\t\t\t\t\tsetCustomMarkerTwoPosition();\n\t\t\t\t\t\t\/\/ plotMarkers(markerList);\n\t\t\t\t\t}\n\t\t\t\t});\n\t}\n<\/pre>\ninitilizeMap()<\/code>, we set up our map in the Fragment<\/code>. We use SupportMapFragment<\/code> in order to make our map compatible with versions older than the Android version 4.0. Also by using the OnGlobalLayoutListener<\/code> that is called after layout has been done, but before display, in order to avoid making any changes to the map, before the map is fully set up in our layout. Otherwise an error that says, that map is not ready yet, may appear.[ulp id=’Ja8Orb5oPKdShcXt’]<\/p>\n\tpublic void initializeUiSettings() {\n\t\tgoogleMap.getUiSettings().setCompassEnabled(true);\n\t\tgoogleMap.getUiSettings().setRotateGesturesEnabled(false);\n\t\tgoogleMap.getUiSettings().setTiltGesturesEnabled(true);\n\t\tgoogleMap.getUiSettings().setZoomControlsEnabled(true);\n\t\tgoogleMap.getUiSettings().setMyLocationButtonEnabled(true);\n\t}\n<\/pre>\n\tpublic void initializeMapLocationSettings() {\n\t\tgoogleMap.setMyLocationEnabled(true);\n\t}\n<\/pre>\n\tpublic void initializeMapTraffic() {\n\t\tgoogleMap.setTrafficEnabled(true);\n\t}\n<\/pre>\n\tpublic void initializeMapType() {\n\t\tgoogleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);\n\t}\n<\/pre>\nGoogleMap.MAP_TYPE_NORMAL<\/code>.<\/p>\n\t\n\tpublic void initializeMapViewSettings() {\n\t\tgoogleMap.setIndoorEnabled(true);\n\t\tgoogleMap.setBuildingsEnabled(false);\n\t}\n<\/pre>\n\tpublic void zoomAnimateLevelToFitMarkers(int padding) {\n\t\tLatLngBounds.Builder b = new LatLngBounds.Builder();\n\t\titer = markersHashMap.entrySet().iterator();\n\n\t\twhile (iter.hasNext()) {\n\t\t\tMap.Entry mEntry = (Map.Entry) iter.next();\n\t\t\tCustomMarker key = (CustomMarker) mEntry.getKey();\n\t\t\tLatLng ll = new LatLng(key.getCustomMarkerLatitude(), key.getCustomMarkerLongitude());\n\t\t\tb.include(ll);\n\t\t}\n\t\tLatLngBounds bounds = b.build();\n\n\t\t\/\/ Change the padding as per needed\n\t\tcu = CameraUpdateFactory.newLatLngBounds(bounds, padding);\n\t\tgoogleMap.animateCamera(cu);\n\t}\n<\/pre>\n5. Creating the source code of the helper class CustomMarker.java<\/h2>\n
CustomMarker.java<\/code> in order to help us make multiple markers and store them in an array, so that we can use them in the AndroidGoogleMapsActivity<\/code>. This is a helper class.<\/p>\nsrc\/com.javacodegeeks.androidgooglemapsexample\/CustomMarker.java<\/code> file and paste the code below.<\/p>\npackage com.javacodegeeks.androidgooglemapsexample;\n\npublic class CustomMarker {\n\n\tprivate String id;\n\tprivate Double latitude;\n\tprivate Double longitude;\n\n\tpublic CustomMarker(String id, Double latitude, Double longitude) {\n\n\t\tthis.id = id;\n\t\tthis.latitude = latitude;\n\t\tthis.longitude = longitude;\n\t}\n\n\tpublic CustomMarker() {\n\t\tthis.id = \"\";\n\t\tthis.latitude = 0.0;\n\t\tthis.longitude = 0.0;\n\t}\n\n\tpublic String getCustomMarkerId() {\n\t\treturn id;\n\t}\n\n\tpublic void setCustomMarkerId(String id) {\n\t\tthis.id = id;\n\t}\n\n\tpublic Double getCustomMarkerLatitude() {\n\t\treturn latitude;\n\t}\n\n\tpublic void setCustomMarkerLatitude(Double mLatitude) {\n\t\tthis.latitude = mLatitude;\n\t}\n\n\tpublic Double getCustomMarkerLongitude() {\n\t\treturn longitude;\n\t}\n\n\tpublic void setCustomMarkerLongitude(Double mLongitude) {\n\t\tthis.longitude = mLongitude;\n\t}\n}\n<\/pre>\n\tpublic void setCustomMarkerId(String id) {\n\t\tthis.id = id;\n\t}\n<\/pre>\n6. Creating the source code of the helper class LatLngInterpolator.java<\/h2>\n
src\/com.javacodegeeks.androidgooglemapsexample\/LatLngInterpolator.java<\/code> file and paste the code below.<\/p>\npackage com.javacodegeeks.androidgooglemapsexample;\n\nimport static java.lang.Math.asin;\nimport static java.lang.Math.atan2;\nimport static java.lang.Math.cos;\nimport static java.lang.Math.pow;\nimport static java.lang.Math.sin;\nimport static java.lang.Math.sqrt;\nimport static java.lang.Math.toDegrees;\nimport static java.lang.Math.toRadians;\n\nimport com.google.android.gms.maps.model.LatLng;\n\npublic interface LatLngInterpolator {\n\tpublic LatLng interpolate(float fraction, LatLng a, LatLng b);\n\n\tpublic class Linear implements LatLngInterpolator {\n\t\t@Override\n\t\tpublic LatLng interpolate(float fraction, LatLng a, LatLng b) {\n\t\t\tdouble lat = (b.latitude - a.latitude) * fraction + a.latitude;\n\t\t\tdouble lng = (b.longitude - a.longitude) * fraction + a.longitude;\n\t\t\treturn new LatLng(lat, lng);\n\t\t}\n\t}\n\n\tpublic class LinearFixed implements LatLngInterpolator {\n\t\t@Override\n\t\tpublic LatLng interpolate(float fraction, LatLng a, LatLng b) {\n\t\t\tdouble lat = (b.latitude - a.latitude) * fraction + a.latitude;\n\t\t\tdouble lngDelta = b.longitude - a.longitude;\n\n\t\t\tif (Math.abs(lngDelta) > 180) {\n\t\t\t\tlngDelta -= Math.signum(lngDelta) * 360;\n\t\t\t}\n\t\t\tdouble lng = lngDelta * fraction + a.longitude;\n\t\t\treturn new LatLng(lat, lng);\n\t\t}\n\t}\n\n\tpublic class Spherical implements LatLngInterpolator {\n\n\t\t@Override\n\t\tpublic LatLng interpolate(float fraction, LatLng from, LatLng to) {\n\n\t\t\tdouble fromLat = toRadians(from.latitude);\n\t\t\tdouble fromLng = toRadians(from.longitude);\n\t\t\tdouble toLat = toRadians(to.latitude);\n\t\t\tdouble toLng = toRadians(to.longitude);\n\t\t\tdouble cosFromLat = cos(fromLat);\n\t\t\tdouble cosToLat = cos(toLat);\n\n\t\t\tdouble angle = computeAngleBetween(fromLat, fromLng, toLat, toLng);\n\t\t\tdouble sinAngle = sin(angle);\n\t\t\tif (sinAngle < 1E-6) {\n\t\t\t\treturn from;\n\t\t\t}\n\t\t\tdouble a = sin((1 - fraction) * angle) \/ sinAngle;\n\t\t\tdouble b = sin(fraction * angle) \/ sinAngle;\n\n\t\t\tdouble x = a * cosFromLat * cos(fromLng) + b * cosToLat * cos(toLng);\n\t\t\tdouble y = a * cosFromLat * sin(fromLng) + b * cosToLat * sin(toLng);\n\t\t\tdouble z = a * sin(fromLat) + b * sin(toLat);\n\n\t\t\tdouble lat = atan2(z, sqrt(x * x + y * y));\n\t\t\tdouble lng = atan2(y, x);\n\t\t\treturn new LatLng(toDegrees(lat), toDegrees(lng));\n\t\t}\n\n\t\tprivate double computeAngleBetween(double fromLat, double fromLng, double toLat, double toLng) {\n\n\t\t\tdouble dLat = fromLat - toLat;\n\t\t\tdouble dLng = fromLng - toLng;\n\t\t\treturn 2 * asin(sqrt(pow(sin(dLat \/ 2), 2) + cos(fromLat) * cos(toLat) * pow(sin(dLng \/ 2), 2)));\n\t\t}\n\t}\n}\n<\/pre>\n7. Creating the source code of the helper class MarkerAnimation.java<\/h2>\n
src\/com.javacodegeeks.androidgooglemapsexample\/MarkerAnimation.java<\/code> file and paste the code below.<\/p>\npackage com.javacodegeeks.androidgooglemapsexample;\n\nimport android.animation.ObjectAnimator;\nimport android.animation.TypeEvaluator;\nimport android.animation.ValueAnimator;\nimport android.annotation.TargetApi;\nimport android.os.Build;\nimport android.os.Handler;\nimport android.os.SystemClock;\nimport android.util.Property;\nimport android.view.animation.AccelerateDecelerateInterpolator;\nimport android.view.animation.Interpolator;\n\nimport com.google.android.gms.maps.model.LatLng;\nimport com.google.android.gms.maps.model.Marker;\n\npublic class MarkerAnimation {\n\n\tstatic void animateMarkerToGB(final Marker marker, final LatLng finalPosition, final LatLngInterpolator latLngInterpolator) {\n\t\tfinal LatLng startPosition = marker.getPosition();\n\t\tfinal Handler handler = new Handler();\n\t\tfinal long start = SystemClock.uptimeMillis();\n\t\tfinal Interpolator interpolator = new AccelerateDecelerateInterpolator();\n\t\tfinal float durationInMs = 500;\n\n\t\thandler.post(new Runnable() {\n\t\t\tlong elapsed;\n\t\t\tfloat t;\n\t\t\tfloat v;\n\n\t\t\t@Override\n\t\t\tpublic void run() {\n\t\t\t\t\/\/ Calculate progress using interpolator\n\t\t\t\telapsed = SystemClock.uptimeMillis() - start;\n\t\t\t\tt = elapsed \/ durationInMs;\n\t\t\t\tv = interpolator.getInterpolation(t);\n\n\t\t\t\tmarker.setPosition(latLngInterpolator.interpolate(v, startPosition, finalPosition));\n\n\t\t\t\tif (t < 1) {\n\n\t\t\t\t\thandler.postDelayed(this, 16);\n\t\t\t\t}\n\t\t\t}\n\t\t});\n\t}\n\n\t@TargetApi(Build.VERSION_CODES.HONEYCOMB)\n\tstatic void animateMarkerToHC(final Marker marker, final LatLng finalPosition, final LatLngInterpolator latLngInterpolator) {\n\t\tfinal LatLng startPosition = marker.getPosition();\n\n\t\tValueAnimator valueAnimator = new ValueAnimator();\n\t\tvalueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {\n\t\t\t@Override\n\t\t\tpublic void onAnimationUpdate(ValueAnimator animation) {\n\t\t\t\tfloat v = animation.getAnimatedFraction();\n\t\t\t\tLatLng newPosition = latLngInterpolator.interpolate(v, startPosition, finalPosition);\n\t\t\t\tmarker.setPosition(newPosition);\n\t\t\t}\n\t\t});\n\t\tvalueAnimator.setFloatValues(0, 1);\n\t\tvalueAnimator.setDuration(500);\n\t\tvalueAnimator.start();\n\t}\n\n\t@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)\n\tstatic void animateMarkerToICS(Marker marker, LatLng finalPosition, final LatLngInterpolator latLngInterpolator) {\n\t\tTypeEvaluator typeEvaluator = new TypeEvaluator() {\n\t\t\t@Override\n\t\t\tpublic LatLng evaluate(float fraction, LatLng startValue, LatLng endValue) {\n\t\t\t\treturn latLngInterpolator.interpolate(fraction, startValue, endValue);\n\t\t\t}\n\t\t};\n\t\tProperty property = Property.of(Marker.class, LatLng.class, \"position\");\n\t\tObjectAnimator animator = ObjectAnimator.ofObject(marker, property, typeEvaluator, finalPosition);\n\t\tanimator.setDuration(500);\n\t\tanimator.start();\n\t}\n}\n<\/pre>\n8. Modifying the AndroidManifest.xml<\/h2>\n
meta-data<\/code> tag in our xml. Also, we should not forget the API KEY<\/strong> meta-data<\/code> tag in our xml, in order to get permission to use Google Maps.<\/p>\n<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<manifest xmlns:android=\"http:\/\/schemas.android.com\/apk\/res\/android\"\n package=\"com.javacodegeeks.androidgooglemapsexample\"\n android:versionCode=\"1\"\n android:versionName=\"1.0\" >\n\n <uses-sdk\n android:minSdkVersion=\"9\"\n android:targetSdkVersion=\"19\" \/>\n\n <uses-feature\n android:glEsVersion=\"0x00020000\"\n android:required=\"true\" \/>\n\n <uses-permission android:name=\"android.permission.INTERNET\" \/>\n <uses-permission android:name=\"android.permission.ACCESS_NETWORK_STATE\" \/>\n <uses-permission android:name=\"android.permission.WRITE_EXTERNAL_STORAGE\" \/>\n\n <!--\n The following two permissions are not required to use\n Google Maps Android API v2, but are recommended.\n -->\n <uses-permission android:name=\"android.permission.ACCESS_COARSE_LOCATION\" \/>\n <uses-permission android:name=\"android.permission.ACCESS_FINE_LOCATION\" \/>\n\n <application\n android:allowBackup=\"true\"\n android:icon=\"@drawable\/ic_launcher\"\n android:label=\"@string\/app_name\" >\n <activity\n android:name=\".AndroidGoogleMapsActivity\"\n android:label=\"@string\/app_name\" >\n <intent-filter>\n <action android:name=\"android.intent.action.MAIN\" \/>\n\n <category android:name=\"android.intent.category.LAUNCHER\" \/>\n <\/intent-filter>\n <\/activity>\n\n <meta-data\n android:name=\"com.google.android.gms.version\"\n android:value=\"@integer\/google_play_services_version\" \/>\n <meta-data\n android:name=\"com.google.android.maps.v2.API_KEY\"\n android:value=\"AIzaSyAU9ShujnIg3IDQxtPrafaf7Q1qOvFVdwNmWc4\" \/>\n <\/application>\n\n<\/manifest>\n<\/pre>\n
9. Build, compile and run<\/h2>\n
<\/a>
\n<\/a>
\n<\/a>Download the Eclipse Project<\/h2>\n
\n<\/strong>You can download the full source code of this example here: AndroidGoogleMapsExample<\/strong><\/a><\/div>\nReferences<\/h2>\n