Network check Run Time

-------------------------------MainActivity---------------------------------

/*
 * You need to implement NetworkStateReceiverListener.
 * This interface is described inside the NewtworkStateReceiver class
 */
public class MyActivity implements NetworkStateReceiverListener {
    /* ... */
    private NetworkStateReceiver networkStateReceiver;

}



----------------And---------------------------

public void onCreate(Bundle savedInstanceState) {
    /* ... */
    networkStateReceiver = new NetworkStateReceiver();
    networkStateReceiver.addListener(this);
    this.registerReceiver(networkStateReceiver, new IntentFilter(android.net.ConnectivityManager.CONNECTIVITY_ACTION));
}

public void onDestroy() {
    super.onDestroy();
    networkStateReceiver.removeListener(this);
    this.unregisterReceiver(networkStateReceiver);

}



-----------------And----------------------

@Override
public void networkAvailable() {
    Log.d("tommydevall", "I'm in, baby!");
    /* TODO: Your connection-oriented stuff here */
}

@Override
public void networkUnavailable() {
    Log.d("tommydevall", "I'm dancing with myself");
    /* TODO: Your disconnection-oriented stuff here */       

}



---------------NetworkStateReceiver.java------------------------------


public class NetworkStateReceiver extends BroadcastReceiver {

    protected Set<NetworkStateReceiverListener> listeners;
    protected Boolean connected;

    public NetworkStateReceiver() {
        listeners = new HashSet<NetworkStateReceiverListener>();
        connected = null;
    }

    public void onReceive(Context context, Intent intent) {
        if(intent == null || intent.getExtras() == null)
            return;

        ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo ni = manager.getActiveNetworkInfo();

        if(ni != null && ni.getState() == NetworkInfo.State.CONNECTED) {
            connected = true;
        } else if(intent.getBooleanExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY,Boolean.FALSE)) {
            connected = false;
        }

        notifyStateToAll();
    }

    private void notifyStateToAll() {
        for(NetworkStateReceiverListener listener : listeners)
            notifyState(listener);
    }

    private void notifyState(NetworkStateReceiverListener listener) {
        if(connected == null || listener == null)
            return;

        if(connected == true)
            listener.networkAvailable();
        else
            listener.networkUnavailable();
    }

    public void addListener(NetworkStateReceiverListener l) {
        listeners.add(l);
        notifyState(l);
    }

    public void removeListener(NetworkStateReceiverListener l) {
        listeners.remove(l);
    }

    public interface NetworkStateReceiverListener {
        public void networkAvailable();
        public void networkUnavailable();
    }
}

Camera,Gallery Image

-----------------------------------Androidmanifest--------------------------

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

-------------------Activity------------------

package com.loggedin.mmf.myapplicationcameraimagetake;

import android.Manifest;
import android.app.Activity;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Build;
import android.provider.MediaStore;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;

import static android.Manifest.permission.CAMERA;

public class MainActivity extends AppCompatActivity {
    private Button buttonImage;
    public static int SELECT_FROM_GALLERY = 2;
    public static int CAMERA_PIC_REQUEST = 0;
    private static final int REQUEST = 1337;
    public static final int PERMISSION_REQUEST_CODE = 1111;
    Uri mImageCaptureUri;
    Bitmap productImageBitmap;
    ImageView profilePic;

    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        buttonImage = (Button) findViewById(R.id.buttonImage);
        profilePic = (ImageView) findViewById(R.id.profilePic);
        buttonImage.setOnClickListener(new View.OnClickListener() {
            @Override            public void onClick(View v) {
                selectImage();

            }
        });
    }

    private void selectImage() {
        final CharSequence[] options = {"From Camera", "From Gallery", "Cancel"};
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("Please choose an Image");
        builder.setItems(options, new DialogInterface.OnClickListener() {
            @Override            public void onClick(DialogInterface dialog, int item) {
                if (options[item].equals("From Camera")) {
                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                        if (checkCameraPermission())
                            cameraIntent();
                        else                            requestPermission();
                    } else                        cameraIntent();
                } else if (options[item].equals("From Gallery")) {
                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                        if (checkGalleryPermission())
                            galleryIntent();
                        else                            requestGalleryPermission();
                    } else                        galleryIntent();
                } else if (options[item].equals("Cancel")) {
                    dialog.dismiss();
                }
            }
        });
        builder.create().show();
    }

    private void galleryIntent() {
        Intent intent = new Intent().setType("image/*").setAction(Intent.ACTION_PICK);
        startActivityForResult(Intent.createChooser(intent, "Select Picture"), SELECT_FROM_GALLERY);
    }

    private void cameraIntent() {
        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, mImageCaptureUri);
        startActivityForResult(intent, CAMERA_PIC_REQUEST);
    }

    private void requestPermission() {
        ActivityCompat.requestPermissions(MainActivity.this, new String[]{CAMERA}, PERMISSION_REQUEST_CODE);
    }

    private void requestGalleryPermission() {
        ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, REQUEST);
    }

    private boolean checkCameraPermission() {
        int result1 = ContextCompat.checkSelfPermission(MainActivity.this, CAMERA);
        return result1 == PackageManager.PERMISSION_GRANTED;
    }

    private boolean checkGalleryPermission() {
        int result2 = ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_EXTERNAL_STORAGE);
        return result2 == PackageManager.PERMISSION_GRANTED;
    }

    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {


        if (requestCode == CAMERA_PIC_REQUEST && resultCode == Activity.RESULT_OK && null != data) {
            Uri cameraURI = data.getData();
            productImageBitmap = (Bitmap) data.getExtras().get("data");
            profilePic.setImageBitmap(productImageBitmap);
            profilePic.setVisibility(View.VISIBLE);

        } else if (requestCode == SELECT_FROM_GALLERY && resultCode == Activity.RESULT_OK && null != data) {
            Uri galleryURI = data.getData();
            profilePic.setImageURI(galleryURI);
        }
    }

}





----------------activity.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="wrap_content"        android:orientation="vertical">

        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="Hello World!"            app:layout_constraintBottom_toBottomOf="parent"            app:layout_constraintLeft_toLeftOf="parent"            app:layout_constraintRight_toRightOf="parent"            app:layout_constraintTop_toTopOf="parent" />
<ImageView    android:layout_width="match_parent"    android:layout_height="300dp"    android:id="@+id/profilePic"/>
        <Button            android:id="@+id/buttonImage"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:text="Picture"/>
    </LinearLayout>
</RelativeLayout>

Password Validation

package com.dhananjay.demoravicontact.allsetting.activity;

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

import com.dhananjay.demoravicontact.R;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class AllSettingActivity extends AppCompatActivity {
    protected static final String TAG = "AllSettingActivity";
    EditText password_edittext;
    Button send_button;

    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_all_setting);
        password_edittext=(EditText)findViewById(R.id.password_edittext);
        send_button=(Button) findViewById(R.id.send_button);

        send_button.setOnClickListener(new View.OnClickListener() {
            @Override            public void onClick(View view) {
                if(password_edittext.getText().toString().length()<8

 &&!isValidPassword(password_edittext.getText().toString())){
                    System.out.println("Not Valid");
                    Toast.makeText(AllSettingActivity.this, "Not Valid", 

Toast.LENGTH_SHORT).show();
                }else{
                    Toast.makeText(AllSettingActivity.this, "Valid", 

Toast.LENGTH_SHORT).show();
                    System.out.println("Valid");
                }
            }
        });
    }

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

    }
    public static boolean isValidPassword(final String password) {

        Pattern pattern;
        Matcher matcher;
        final String PASSWORD_PATTERN =

 "^(?=.*[0-9])(?=.*[A-Z])(?=.*[@#$%^&+=!])(?=\\S+$).{4,}$";
        pattern = Pattern.compile(PASSWORD_PATTERN);
        matcher = pattern.matcher(password);

        return matcher.matches();

    }

}

Snack bar

Snackbar snackbar = Snackbar.make(findViewById(android.R.id.content)

, message,

 Snackbar.LENGTH_LONG);
snackbar.show();

AND MAKE FUNCTION CLASS

Function.Snackbar(_context, view,"Something went wrong!");





Function.Snackbar(_context, findViewById(android.R.id.content)
,"Something went wrong!");

PatternLockView

https://github.com/aritraroy/PatternLockView

Whatsapp Like Story View

https://github.com/shts/StoriesProgressView

AutoComplete Address Search

https://github.com/seatgeek/android-PlacesAutocompleteTextView