<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Winter Is Coming"
    android:id="@+id/txt"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintRight_toRightOf="parent"
    app:layout_constraintTop_toTopOf="parent" />
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/time"
        android:text="..."/>
<Button
    android:id="@+id/btn"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Play"
    tools:layout_editor_absoluteX="147dp"
    tools:layout_editor_absoluteY="419dp" />




Button btn;
TextView txt;
MediaPlayer ply;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn = findViewById(R.id.btn);
        txt = findViewById(R.id.txt);
btn.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {

        txt.setText("Winter is Coming".toString());
        final MediaPlayer mp = MediaPlayer.create(MainActivity.this, R.raw.winter);
        mp.start();
        txt.setTextColor(Color.parseColor("#76FF03"));

    }
});
        new CountDownTimer(4, 1) {
            @Override
            public void onTick(long l) {
                txt.setTextColor(Color.parseColor("#76FF03"));
            }

            @Override
            public void onFinish() {

            }
        };
    }}

package com.example.anitaa.studentadd;

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

import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;

import java.util.HashMap;
import java.util.Map;

public class MainActivity extends AppCompatActivity {

    EditText FirstName, LastName, Class;
    Button button;
    String url1="http://192.168.1.3/student/web/studentrecords";



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate ( savedInstanceState );
        setContentView ( R.layout.activity_main );
        FirstName= (EditText) findViewById(R.id.firstname);
        LastName= (EditText) findViewById(R.id.lastname);
        Class= (EditText) findViewById(R.id.studentclass);
        button = (Button) findViewById(R.id.studentinformation);
        button.setOnClickListener ( new View.OnClickListener () {
            @Override
            public void onClick(View v) {
                final String fname,lname,class2;
                fname = FirstName.getText().toString();
                lname = LastName.getText().toString();
                class2 = Class.getText().toString();
                StringRequest stringRequest1 = new StringRequest ( Request.Method.POST, url1, new Response.Listener<String> () {
                    @Override
                    public void onResponse(String response) {

                        Toast.makeText(MainActivity.this,response.toString (),Toast.LENGTH_SHORT).show();
                    }
                }, new Response.ErrorListener () {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        Toast.makeText(MainActivity.this,error.toString (),Toast.LENGTH_SHORT).show();
                        error.printStackTrace();

                    }
                } ){
                    @Override
                    protected Map<String, String> getParams() throws AuthFailureError {
                        Map<String, String> params = new HashMap<String, String> ();
                        params.put("FirstName",fname);
                        params.put("LastName",lname);
                        params.put("Class",class2);
                        return params;
                    }
                };

                MySingleton.getInstance ( MainActivity.this ).addToRequestque ( stringRequest1 );

            }
        } );


    }
    }