ExampleFragment.java

package com.example.fragment;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;

import com.example.R;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapView;
import com.google.android.gms.maps.MapsInitializer;
import com.google.android.gms.maps.UiSettings;
import com.google.android.gms.maps.model.BitmapDescriptor;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;

import org.alfonz.utility.VersionUtility;


public class ExampleFragment extends Fragment
{
	private View mRootView;
	private MapView mMapView;


	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
	{
		mRootView = inflater.inflate(R.layout.fragment_example, container, false);
		initMap();
		mMapView = (MapView) mRootView.findViewById(R.id.fragment_example_map);
		mMapView.onCreate(savedInstanceState);
		return mRootView;
	}


	@Override
	public void onActivityCreated(Bundle savedInstanceState)
	{
		super.onActivityCreated(savedInstanceState);
		setupMap();
		bindData();
	}


	@Override
	public void onResume()
	{
		super.onResume();

		// map
		if(mMapView != null) mMapView.onResume();
	}


	@Override
	public void onPause()
	{
		super.onPause();

		// map
		if(mMapView != null) mMapView.onPause();
	}


	@Override
	public void onDestroy()
	{
		super.onDestroy();

		// map
		if(mMapView != null) mMapView.onDestroy();
	}


	@Override
	public void onLowMemory()
	{
		super.onLowMemory();

		// map
		if(mMapView != null) mMapView.onLowMemory();
	}


	@Override
	public void onSaveInstanceState(Bundle outState)
	{
		// save current instance state
		super.onSaveInstanceState(outState);
		setUserVisibleHint(true);

		// map
		if(mMapView != null) mMapView.onSaveInstanceState(outState);
	}


	private void bindData()
	{
		// reference
		GoogleMap map = ((MapView) mRootView.findViewById(R.id.fragment_example_map)).getMap();

		// content
		if(map != null)
		{
			BitmapDescriptor marker1 = BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_GREEN);
			BitmapDescriptor marker2 = BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_YELLOW);
			BitmapDescriptor marker3 = BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED);
			BitmapDescriptor marker4 = BitmapDescriptorFactory.fromResource(R.mipmap.ic_launcher);
			BitmapDescriptor[] markers = {marker1, marker2, marker3, marker4};

			for(int i = 0; i < 16; i++)
			{
				map.addMarker(new MarkerOptions()
						.position(new LatLng(49.194696 + 0.1 * Math.sin(i * Math.PI / 8), 16.608595 + 0.1 * Math.cos(i * Math.PI / 8)))
						.title("Example " + i)
						.icon(markers[i % 4])
				);
			}
		}
	}


	private void initMap()
	{
		if(!VersionUtility.isSupportedOpenGlEs2(getActivity()))
		{
			Toast.makeText(getActivity(), R.string.global_map_fail_toast, Toast.LENGTH_LONG).show();
		}

		try
		{
			MapsInitializer.initialize(getActivity());
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
	}


	private void setupMap()
	{
		// reference
		GoogleMap map = ((MapView) mRootView.findViewById(R.id.fragment_example_map)).getMap();

		// settings
		if(map != null)
		{
			map.setMapType(GoogleMap.MAP_TYPE_NORMAL);
			map.setMyLocationEnabled(true);

			UiSettings settings = map.getUiSettings();
			settings.setAllGesturesEnabled(true);
			settings.setMyLocationButtonEnabled(true);
			settings.setZoomControlsEnabled(true);

			CameraPosition cameraPosition = new CameraPosition.Builder()
					.target(new LatLng(49.194696, 16.608595))
					.zoom(11)
					.bearing(0)
					.tilt(30)
					.build();
			map.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
		}
	}
}