Android maximum zoom in Google Map |Android show all markers in Google Map | Android Google Map version 2 with max zoom to show all markers | LatLngBuilder example in Android Google Map

Hi Friends, again I am back with interesting post "How to show all the marker pins in google map in one time?" Are you looking for code to do this? follow given below step-

1)Create new project with blank activity
2)Import Play services lib project inside your project
3)Go to activity_main.xml and create MapFregment like this-

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
   xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<fragment
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment" />

</RelativeLayout>

4)Go to MainActivity.java and paste below code-

	package com.androoidhub4you.googlemapmaxzoom;
	import java.util.ArrayList;
	import java.util.List;
	import android.app.Activity;
	import android.os.Bundle;
	import com.google.android.gms.maps.CameraUpdate;
	import com.google.android.gms.maps.CameraUpdateFactory;
	import com.google.android.gms.maps.GoogleMap;
	import com.google.android.gms.maps.MapFragment;
	import com.google.android.gms.maps.model.LatLng;
	import com.google.android.gms.maps.model.LatLngBounds;
	import com.google.android.gms.maps.model.Marker;
	import com.google.android.gms.maps.model.MarkerOptions;
	/**
	* @author manish
	*
	*/
	public class MainActivity extends Activity {
	private GoogleMap map;
	LatLngBounds.Builder builder;
	CameraUpdate cu;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_main);
	/**get the reference of map from layout*/
	map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))
	.getMap();
	/**call the map set up method*/
	mSetUpMap();
	}
	/**create method to set map view*/
	public void mSetUpMap() {
	/**clear the map before redraw to them*/
	map.clear();
	/**Create dummy Markers List*/
	List<Marker> markersList = new ArrayList<Marker>();
	Marker Delhi = map.addMarker(new MarkerOptions().position(new LatLng(
	28.61, 77.2099)).title("Delhi"));
	Marker Chaandigarh = map.addMarker(new MarkerOptions().position(new LatLng(
	30.75, 76.78)).title("Chandigarh"));
	Marker SriLanka = map.addMarker(new MarkerOptions().position(new LatLng(
	7.000, 81.0000)).title("Sri Lanka"));
	Marker America = map.addMarker(new MarkerOptions().position(new LatLng(
	38.8833, 77.0167)).title("America"));
	Marker Arab = map.addMarker(new MarkerOptions().position(new LatLng(
	24.000, 45.000)).title("Arab"));
	/**Put all the markers into arraylist*/
	markersList.add(Delhi);
	markersList.add(SriLanka);
	markersList.add(America);
	markersList.add(Arab);
	markersList.add(Chaandigarh);
	/**create for loop for get the latLngbuilder from the marker list*/
	builder = new LatLngBounds.Builder();
	for (Marker m : markersList) {
	builder.include(m.getPosition());
	}
	/**initialize the padding for map boundary*/
	int padding = 50;
	/**create the bounds from latlngBuilder to set into map camera*/
	LatLngBounds bounds = builder.build();
	/**create the camera with bounds and padding to set into map*/
	cu = CameraUpdateFactory.newLatLngBounds(bounds, padding);
	/**call the map call back to know map is loaded or not*/
	map.setOnMapLoadedCallback(new GoogleMap.OnMapLoadedCallback() {
	@Override
	public void onMapLoaded() {
	/**set animated zoom camera into map*/
	map.animateCamera(cu);
	}
	});
	}
	}

5)Go to your Manifest.xml and make changes and  permissions-

	<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"
	package="com.androoidhub4you.googlemapmaxzoom"
	android:versionCode="1"
	android:versionName="1.0" >
	<uses-sdk
	android:minSdkVersion="11"
	android:targetSdkVersion="21" />
	<uses-permission android:name="android.permission.INTERNET" />
	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
	<uses-permission android:name="android.permission.READ_PHONE_STATE" />
	<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
	<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
	<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
	<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
	<application
	android:allowBackup="true"
	android:icon="@drawable/ic_launcher"
	android:label="@string/app_name"
	android:theme="@android:style/Theme.Light.NoTitleBar" >
	<activity
	android:name=".MainActivity"
	android:label="@string/app_name" >
	<intent-filter>
	<action android:name="android.intent.action.MAIN" />
	<category android:name="android.intent.category.LAUNCHER" />
	</intent-filter>
	</activity>
	<meta-data android:name="com.google.android.gms.version"
	android:value="@integer/google_play_services_version" />
	<meta-data
	android:name="com.google.android.maps.v2.API_KEY"
	android:value="AIzaSyDtKRBFRrpjshqoFfCDq-oalPbbgx4XNBs" />
	</application>
	</manifest>

Download zip code

Thanks,
Manish