Android Take Image From Phone And Add In Imageview

1) Manifext.xml

 Add This Permission On Your Manifest.mls File

    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>


2) Mainactivity.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:padding="10dp">

        <ImageView
            android:id="@+id/imageView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="10dp"
            tools:srcCompat="@tools:sample/avatars[0]"
            android:visibility="gone"/>



        <Button
            android:id="@+id/btn_take"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Get Picture"/>


        <Button
            android:id="@+id/btn_upload"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Upload Picture"
            android:layout_marginTop="10dp"/>
    </LinearLayout>

</RelativeLayout>

3) Mainactivity.java

public class MainActivity extends AppCompatActivity {

    private ImageView imageView;
    private Button btn_take;
    //Request code for taking image
    private final int IMG_REQUEST = 1;
    //Bitmap for geting image and set into imageview
    private Bitmap bitmap;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        imageView = (ImageView) findViewById(R.id.imageView);
        btn_take = (Button) findViewById(R.id.btn_take);

        btn_take.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                selectImg();
            }
        });

    }

    //Function for open gallry to select image
    private void selectImg(){
        Intent intent = new Intent();
        intent.setType("image/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(intent, IMG_REQUEST);  // add your image code here
    }

    //For adding onActivityResult type alt + insert
     //Find onActivityResult and added

     @Override
     protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
         super.onActivityResult(requestCode, resultCode, data);

         //my conditions to set a image into imageview

         if(requestCode == IMG_REQUEST && resultCode == RESULT_OK && data!=null) {
             //To add a get a image file

             Uri path = data.getData();

             try {
                 //Assign image into bitmap
                 bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), path);
                 imageView.setImageBitmap(bitmap);
                 imageView.setVisibility(View.VISIBLE);
             } catch (IOException e) {
                 e.printStackTrace();
             }
         }
     }
 }

Android RecyclerView With Animation

1) Add this line in gradle file

    implementation 'com.android.support:recyclerview-v7:28.0.0'

2) Create Animation Resource File In anim Folder

i) item_animation_fall_down.xml 

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="300">

    <translate
        android:fromYDelta="-20%"
        android:toYDelta="0"
        android:interpolator="@android:anim/decelerate_interpolator"/>

    <alpha
        android:fromAlpha="0"
        android:toAlpha="1"
        android:interpolator="@android:anim/decelerate_interpolator"/>

    <scale
        android:fromXScale="105%"
        android:fromYScale="105%"
        android:toXScale="100%"
        android:toYScale="100%"
        android:pivotX="50%"
        android:pivotY="50%"
        android:interpolator="@android:anim/decelerate_interpolator"/>

</set>

ii) layout_fall_down.xml

<?xml version="1.0" encoding="utf-8"?>
<layoutAnimation xmlns:android="http://schemas.android.com/apk/res/android"
    android:animation="@anim/item_animation_fall_down"
    android:delay="15%"
    android:animationOrder="normal">

</layoutAnimation>

iii) item_slide_from_right.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="300">

    <translate
        android:fromXDelta="100%p"
        android:toYDelta="0"
        android:interpolator="@android:anim/decelerate_interpolator"/>

    <alpha
        android:fromAlpha="0"
        android:toAlpha="1"
        android:interpolator="@android:anim/decelerate_interpolator"/>

<!--Todo: Lets Run this App In Android Device-->
</set>

iv) layout_slide_right.xml

<?xml version="1.0" encoding="utf-8"?>
<layoutAnimation xmlns:android="http://schemas.android.com/apk/res/android"
    android:animation="@anim/item_slide_from_right"
    android:delay="15%"
    android:animationOrder="normal">

</layoutAnimation>


3) item.xml custom list of recyclerview

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:padding="10dp"
        android:layout_marginTop="5dp"
        android:layout_marginLeft="5dp"
        android:layout_marginBottom="5dp"
        android:layout_marginRight="5dp"
        android:background="@drawable/card_rect"
        android:layout_gravity="center">
        ]
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/txt_home"
            android:textAlignment="center"
            android:text="Title"
            android:textColor="#000000"
            android:textSize="18dp"
            android:textStyle="bold"
            android:layout_marginBottom="5dp"/>


    </LinearLayout>


</LinearLayout>

4) Item_Card.java

public class Item_Card {

    String name;

    public Item_Card(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

}

5) ItemAdapter.java

class ItemAdapter extends RecyclerView.Adapter<ItemAdapter.ViewHolder>{

    List<Item_Card> list;

    Context context;

    public ItemAdapter(List<Item_Card> list, Context context) {

        this.list = list;

        this.context = context;

    }

    @NonNull

    @Override

    public ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {

        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.items, viewGroup, false);

        return new ItemAdapter.ViewHolder(view);

    }

    @Override

    public void onBindViewHolder(@NonNull ViewHolder viewHolder, int position) {

        Item_Card Cards = list.get(position);

        final String name = Cards.getName();

        viewHolder.home_title.setText(name);

    }

    @Override

    public int getItemCount() {

        return list.size();

    }

    public class ViewHolder extends RecyclerView.ViewHolder{

        TextView home_title;

        public ViewHolder(View itemView) {

            super(itemView);

            home_title = (TextView) itemView.findViewById(R.id.txt_home);

        }

    }

}

6) activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <LinearLayout
        android:id="@+id/linearLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <Button
            android:id="@+id/btn_fall_down"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Fall Down" />


        <Button
            android:id="@+id/btn_slide_right"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Slide Right" />

    </LinearLayout>

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:layout_editor_absoluteY="55dp"
        tools:ignore="MissingConstraints" />


</LinearLayout> 

7) MainActivity.java

public class MainActivity extends AppCompatActivity {

    private RecyclerView recyclerView;
    private ItemAdapter adapter;
    private List<Item_Card> Cardss;
    private RecyclerView.LayoutManager mLayoutManager;

    Button btn_fall_down, btn_slide_right;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btn_fall_down = (Button) findViewById(R.id.btn_fall_down);
        btn_slide_right = (Button) findViewById(R.id.btn_slide_right);

        recyclerView = (RecyclerView) findViewById(R.id.recyclerview);

        recyclerView.setHasFixedSize(true);

        mLayoutManager = new GridLayoutManager(MainActivity.this,2);
        recyclerView.setLayoutManager(mLayoutManager);
        Cardss = new ArrayList<>();

        btn_fall_down.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Data(recyclerView, 0);
            }
        });



        btn_slide_right.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Data(recyclerView, 2);
            }
        });
    }

    private void Data(RecyclerView recyclerView, int type) {


        Context context = recyclerView.getContext();
        LayoutAnimationController controller = null; // for animation

        if (type == 0){
            controller = AnimationUtils.loadLayoutAnimation(context, R.anim.layout_fall_down);
        } if(type == 2){
            controller = AnimationUtils.loadLayoutAnimation(context, R.anim.layout_slide_right);
        }

        for (int i = 0; i <=20; i++) {
            Cardss.add(new Item_Card(
                    String.valueOf(i)
            ));
        }
        //adapter.notifyDataSetChanged();
        adapter = new ItemAdapter(Cardss, MainActivity.this);
        recyclerView.setAdapter(adapter);

        recyclerView.setLayoutAnimation(controller);
        recyclerView.getAdapter().notifyDataSetChanged();
        recyclerView.scheduleLayoutAnimation();
    }
}

Android Adding Banner Ads into Apps Admob

1) Add Internet Permission

    <uses-permission android:name="android.permission.INTERNET"/>

    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

2) Add Dependency In Your Gradle File

   implementation 'com.google.android.gms:play-services-ads:15.0.1' 

3) Create Your App Id On Admob Site

   

  Create your app id on admob site

  

   * Don't Use Your Unit Id For Tesing, Other Wise Your Admob Account Will Suspend By Admob Policy

      Use Dummy Id Which Provided By Admob For Testing

      From: 

      https://developers.google.com/admob/android/test-ads *

4) Layout File File

 <?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity">

    <com.google.android.gms.ads.AdView

        xmlns:ads="http://schemas.android.com/apk/res-auto"

        android:id="@+id/adView"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentTop="true"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="32dp"

        ads:adSize="BANNER"

        ads:adUnitId="ca-app-pub-3940256099942544/6300978111"/>

</RelativeLayout>

5) Java File

 import com.google.android.gms.ads.AdListener;

import com.google.android.gms.ads.AdRequest;

import com.google.android.gms.ads.AdSize;

import com.google.android.gms.ads.AdView;

import com.google.android.gms.ads.InterstitialAd;

import com.google.android.gms.ads.MobileAds;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.app.Activity;

import android.content.Context;

import android.content.DialogInterface;

import android.support.v4.app.Fragment;

import android.support.v7.app.AlertDialog;

import android.view.Window;

import android.view.WindowManager;

import android.widget.RelativeLayout;

public class MainActivity extends AppCompatActivity {

    private AdView mAdView;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        // Request window feature action bar

        requestWindowFeature(Window.FEATURE_ACTION_BAR);

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        // Add Your App ID From Admob

        MobileAds.initialize(this,

                "ca-app-pub-1824429213524177~7047017369");

        mAdView = findViewById(R.id.adView);

        AdRequest adRequest = new AdRequest.Builder().build();

        mAdView.loadAd(adRequest);

    }

}

Android Tutorial - Retrofit POST Request

1) Add this dependency on your grdule.build(Module File)

      implementation 'com.squareup.retrofit2:retrofit:2.1.0'
    implementation 'com.google.code.gson:gson:2.6.2'
    implementation 'com.squareup.retrofit2:converter-gson:2.1.0'

2) Add Internet Permission On Manifest.xml File

    <uses-permission android:name="android.permission.INTERNET"/>


3) Api.interface for creating a method

   in retrofit url is define in two parts 
    
    i)  base url (on my code  base url is "https://reqres.in/api/") 
    
   ii) route (on my code "users" is a route)

   complete url is "https://reqres.in/api/users"

import java.util.List;

import retrofit2.Call;
import retrofit2.http.GET;

public interface Api {


    @FormUrlEncoded
    @POST("users")
    Call<ResponseBody>  post_data(
            @Field("name") String name,
            @Field("job") String job
    );
}



4) RetrofitClient.class 


   import retrofit2.Retrofit;
   import retrofit2.converter.gson.GsonConverterFactory;

  public class RetrofitClient {
      private String BASE_URL = "https://reqres.in/api/";
      private static RetrofitClient mInstance;
      private Retrofit retrofit;

      private RetrofitClient(){
          retrofit = new Retrofit.Builder()
                  .baseUrl(BASE_URL)
                  .addConverterFactory(GsonConverterFactory.create())
                  .build();
      }

      public static synchronized RetrofitClient getmInstance(){
          if(mInstance == null) {
              mInstance = new RetrofitClient();
          }
          return mInstance;
      }

      public Api getApi(){
          return retrofit.create(Api.class);
      }
  }    

5) Activity XML Layout File

 <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".Post">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:padding="20dp">

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/et_name"
            android:hint="Name"
            android:textStyle="bold"
            android:textColor="#000000"
            android:textSize="25dp"/>

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/et_job"
            android:hint="Job"
            android:textStyle="bold"
            android:textColor="#000000"
            android:textSize="25dp"/>

        <Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/btn_post"
            android:text="Post"/>
    </LinearLayout>

</RelativeLayout>


6) Activity Java File

package com.example.admin.retrofitget;

import android.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

import okhttp3.ResponseBody;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;

public class Post extends AppCompatActivity {

    EditText et_name, et_job;
    Button btn_post;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_post);

        et_name = (EditText)findViewById(R.id.et_name);
        et_job = (EditText)findViewById(R.id.et_job);

        btn_post = (Button)findViewById(R.id.btn_post);

        final Call<ResponseBody> call = RetrofitClient
                .getmInstance()
                .getApi()
                .post_data(et_name.getText().toString(),
                        et_job.getText().toString());


        btn_post.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                call.enqueue(new Callback<ResponseBody>() {
                    @Override
                    public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
                        try {
                            String res = response.body().toString();
                            showMessage("Success", response.body().string());
                        } catch (Exception ex) {
                            ex.printStackTrace();
                        }
                    }

                    @Override
                    public void onFailure(Call<ResponseBody> call, Throwable t) {
                        showMessage("Error", t.getMessage());
                    }
                });
            }
        });

    }

    public void showMessage(String title,String Message){
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setCancelable(true);
        builder.setTitle(title);
        builder.setMessage(Message);
        builder.show();
    }

}

Android Retrofit Get Example – Fetching JSON from URL

1) Add this dependency on your grdule.build(Module File)

      implementation 'com.squareup.retrofit2:retrofit:2.1.0'
    implementation 'com.google.code.gson:gson:2.6.2'
    implementation 'com.squareup.retrofit2:converter-gson:2.1.0'

2) Add Internet Permission On Manifest.xml File

    <uses-permission android:name="android.permission.INTERNET"/>

3) Data.class for getting and reading data ()
    

public class Data {
    private String id;
    private String name;
    private String username;
    private String email;


    public Data(String id, String name, String username, String email) {
        this.id = id;
        this.name = name;
        this.username = username;
        this.email = email;
    }

    public String getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public String getUsername() {
        return username;
    }

    public String getEmail() {
        return email;
    }
}


This class property is base upon your JSON data format
my JSON Data  format is 

{
     "id":"1",
     "name" :"Abcd",
      "username":"xyz",
     "email":"abc@xyz.com"
}


4) Api.interface for creating a method

   in retrofit url is define in two parts 
    
    i)  base url (on my code  base url is "https://jsonplaceholder.typicode.com/") 
    
   ii) route (on my code "users" is a route)

   complete url is "https://jsonplaceholder.typicode.com/users"

import java.util.List;

import retrofit2.Call;
import retrofit2.http.GET;

public interface Api {

    String BASE_URL = "https://jsonplaceholder.typicode.com/";

    @GET("users")
    Call<List<Data>> getData();
}


5) Get.XML activity layout file

 <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".Get">

    <ListView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/list_item">

    </ListView>

</RelativeLayout> 

5) Get.java activity java file
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

import java.util.List;

import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;

public class Get extends AppCompatActivity {

    ListView list_item;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_get);

        list_item = (ListView)findViewById(R.id.list_item);

        Retrofit get_retrofit = new Retrofit.Builder()
                .baseUrl(Api.BASE_URL)
                .addConverterFactory(GsonConverterFactory.create())
                .build();

        Api api = get_retrofit.create(Api.class);

        Call<List<Data>> call = api.getData();

        call.enqueue(new Callback<List<Data>>() {
            @Override
            public void onResponse(Call<List<Data>> call, Response<List<Data>> response) {

                //Toast.makeText(getApplicationContext(), String.valueOf(response.body()), Toast.LENGTH_LONG).show();
                List<Data> data = response.body();

                String[] data_arr = new String[data.size()];


                for (int i =0; i< data.size(); i++){
                    data_arr[i] = data.get(i).getId() + "\n"
                            + data.get(i).getName() + "\n" +
                            data.get(i).getUsername() + "\n" +
                            data.get(i).getEmail();
                }

                list_item.setAdapter(
                        new ArrayAdapter<String>(
                                getApplicationContext(),
                                android.R.layout.simple_list_item_1,
                                data_arr
                        )
                );

            }

            @Override
            public void onFailure(Call<List<Data>> call, Throwable t) {
                Toast.makeText(getApplicationContext(), "Error : \n" +t.getMessage(), Toast.LENGTH_LONG).show();
            }
        });
    }

}

Android GPS Tracking

1) Add Permission On Manifest File
    
    Add permission on manifest.xml file to access all network and GPS

    /* this will added in your project file by default if you choose Maps Activity whrn project was                created */
   <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

    // add this permission to access all networks like mobile and GPS
   <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>


2) XML Layout 
 It Will Create By Default when you choose  maps activity
<?xml version="1.0" encoding="utf-8"?>
<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=".MapsActivity" />


2) Java File
import android.Manifest;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.support.v4.app.ActivityCompat;
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;

    private LocationListener locationListener;
    private LocationManager locationManager;

    private final long MIN_Time = 1000; // 1 second
    private final long MIN_Dist = 5; // 5 Meter

    private LatLng latLng;

    @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);

        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, PackageManager.PERMISSION_GRANTED);
        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, PackageManager.PERMISSION_GRANTED);
    }


    @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("Mijas in Sydney"));
        mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));

        locationListener = new LocationListener() {
            @Override
            public void onLocationChanged(Location location) {
                latLng = new LatLng(location.getLatitude(), location.getLongitude());
                mMap.addMarker(new MarkerOptions().position(latLng).title("My Position"));
                mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
            }

            @Override
            public void onStatusChanged(String provider, int status, Bundle extras) {

            }

            @Override
            public void onProviderEnabled(String provider) {

            }

            @Override
            public void onProviderDisabled(String provider) {

            }
        };

        locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);

        try {
            locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, MIN_Time,                MIN_Dist, locationListener);
        } catch (SecurityException ex){
            ex.printStackTrace();
        }


    }

}