Google Maps current location activity.

maps_activity.xml

<Relative Layoutxmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_patent"
    android:layout_height="match_patent"
    xmlns="http://schemas.android.com/apk/res/android"
    xmlns:android="http://schemas.android.com/apk/res-auto"
    xmlns:android="http://schemas.android.com/tools">

    <LinearLayout
        android:id="@+id/lll"
        android:layout_height = "wrap_content"
        android:layout_width = "match_patent"
        android:orientation = "horizontal"
        android:weightSum = "5"

        <EditText
            android:id = "@+id/etLocationEntry"
            android:layout_width = "0dp"
            android:layout_height = "wrap_content"
            android:layout_weight = "4"
            />
        <Button
            android:id = "@+id/enSearch"
            android:layout_width = "0dp"
            android:layout_height = "wrap_content"
            android:layout_weight = "1"
            android:text = "Go"
            />
    </LinearLayout>

<fragment xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:map="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/map"
    android:name="com.google.android.gms.maps.SupportMapFragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.map.myMap.MapsActivity"
    tools:layout="@layout/abc_activity_chooser_view_list_item" />

mapsActivity.java

//change .map.myMap in line 2 to your company name and app name input in the begining of activity creation.
package com.map.myMap;

import android.support.v4.app.FragmentActivity;
import android.os.Bundle;

import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;

public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {

    private GoogleMap mMap;
    privaate final static int MY_PERMISSION_FINE_LOCATION = 101;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_maps);
        // Obtain the SupportMapFragment and get notified when the map is ready to be used.
        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);
    }


    /**
     * Manipulates the map once available.
     * This callback is triggered when the map is ready to be used.
     * This is where we can add markers or lines, add listeners or move the camera. In this case,
     * we just add a marker near Sydney, Australia.
     * If Google Play services is not installed on the device, the user will be prompted to install
     * it inside the SupportMapFragment. This method will only be triggered once the user has
     * installed Google Play services and returned to the app.
     */
    @Override
    public void onMapReady(GoogleMap googleMap) {
        mMap = googleMap;

        // Add a marker in Sydney and move the camera
        LatLng sydney = new LatLng(-34, 151);
        mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
        mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
      if (ActivityCompact.checkSelfPermission (this, Manifest.permission.ACCESS_FINE_LOCATION) == packageManager.PERMISSION_GRANTED)
        mMap.setMyLocationEnabled=(true);
    } else {
      if (Build.VERSION.SDK_INT >=Build.VERSION_CODES.M) {
      requestPermissions(new String[] Manifest.permission.ACCESS_FINE_LOCATION, MY_PERMISSION_FINE_LOCATION)};
    }
  }

  @Override
  public void onRequestPermissionsResult (int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults)  {
    super.onRequestPermissionsResult (requestCode, permissions, grantResults);
    switch (requestCode)  {
      case MY_PERMISSION_FINE_LOCATION:
        if (grantResults[0] == packageManager.PERMISSION_GRANTED) {
          if (ActivityCompact.checkSelfPermission (this, Manifest.permission.ACCESS_FINE_LOCATION) == packageManager.PERMISSION_GRANTED)

            mMap.setMyLocationEnabled=(true);
        }else {
            Toast.MakeText (getApplicationContext(), "This app requires location permissions to be granted", Toast.LENGTH_LONG).show();
            finish();
        }
        break;
    }
  }

//Below is the .xml codes for creating the functionality buttons.