MAD LAB

MAD LAB-------


P1

XML-CODE
<?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"
 android:background="#FFFFFF"
 tools:context=".MainActivity">
 <TextView
 android:id="@+id/textView4"
 android:layout_width="371dp"
 android:layout_height="wrap_content"
 android:layout_alignParentStart="true"
 android:layout_alignParentLeft="true"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginStart="28dp"
 android:layout_marginLeft="28dp"
 android:layout_marginEnd="12dp"
 android:layout_marginRight="12dp"
 android:layout_marginBottom="219dp"
 android:text="Address:ASKB Campus, Anandnagar, | Bangalore - 560 024"
 android:textAlignment="center"
 android:textSize="24sp" />
 <TextView
 android:id="@+id/textView5"
 android:layout_width="250dp"
 android:layout_height="wrap_content"
 android:layout_alignParentStart="true"
 android:layout_alignParentLeft="true"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginStart="87dp"
 android:layout_marginLeft="87dp"
 android:layout_marginEnd="73dp"
 android:layout_marginRight="73dp"

 android:layout_marginBottom="157dp"
 android:text="Ph No: 9108380566"
 android:textAlignment="center"
 android:textSize="24sp" />
 <TextView
 android:id="@+id/textView6"
 android:layout_width="367dp"
 android:layout_height="wrap_content"
 android:layout_alignParentStart="true"
 android:layout_alignParentLeft="true"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginStart="25dp"
 android:layout_marginLeft="25dp"
 android:layout_marginEnd="19dp"
 android:layout_marginRight="19dp"
 android:layout_marginBottom="64dp"
 android:text="Email Id: uzma.sulthana@atria.edu"
 android:textAlignment="center"
 android:textSize="24sp" />
 <TextView
 android:id="@+id/textView3"
 android:layout_width="367dp"
 android:layout_height="66dp"
 android:layout_alignParentStart="true"
 android:layout_alignParentLeft="true"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginStart="32dp"
 android:layout_marginLeft="32dp"
 android:layout_marginEnd="12dp"
 android:layout_marginRight="12dp"
 android:layout_marginBottom="287dp"
 android:text="Assistant Professor-ISE"
 android:textAlignment="center"
 android:textSize="24sp" />
 <ImageView
 android:id="@+id/imageView3"
 android:layout_width="155dp"
 android:layout_height="98dp"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="12dp"
 android:layout_marginRight="12dp"
 android:layout_marginBottom="495dp"
 app:srcCompat="@drawable/aitlogo" />
 <View
 android:id="@+id/view"
 android:layout_width="wrap_content"
 android:layout_height="4dp"
 android:layout_alignParentBottom="true"
 android:layout_marginBottom="487dp"
 android:background="#4444" />
 <TextView
 android:id="@+id/textView2"
 android:layout_width="176dp"
 android:layout_height="wrap_content"
 android:layout_alignParentStart="true"
 android:layout_alignParentLeft="true"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginStart="95dp"
 android:layout_marginLeft="95dp"
 android:layout_marginEnd="140dp"
 android:layout_marginRight="140dp"
 android:layout_marginBottom="401dp"
 android:text="Uzma Sulthana"
 android:textAlignment="center"
 android:textSize="24sp"
 android:textStyle="bold" />
 <TextView
 android:id="@+id/textView7"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="99dp"
 android:layout_marginRight="99dp"
 android:layout_marginBottom="495dp"
 android:layout_toStartOf="@+id/imageView3"
 android:layout_toLeftOf="@+id/imageView3"
 android:text="AIT"
 android:textColor="#E91E63"

android:textSize="36sp"
 android:textStyle="bold" />
</RelativeLayout>
JAVA-CODE
package com.example.visitingcardapplication;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
public class MainActivity extends AppCompatActivity {
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 }
}


-------------------------------------------------------------------------------------------------------

P2---

XML-CODE
<?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">
 <TextView
 android:layout_width="209dp"
 android:layout_height="60dp"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
android:layout_marginEnd="108dp"
 android:layout_marginRight="108dp"
 android:layout_marginBottom="530dp"
 android:text="Simple Calci"
 android:textSize="36sp"
 app:layout_constraintBottom_toBottomOf="parent"
 app:layout_constraintLeft_toLeftOf="parent"
 app:layout_constraintRight_toRightOf="parent"
 app:layout_constraintTop_toTopOf="parent" />
 <EditText
 android:id="@+id/editText2"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="115dp"
 android:layout_marginRight="115dp"
 android:layout_marginBottom="364dp"
 android:ems="10"
 android:hint="Enter the Number 2"
 android:inputType="textPersonName"
 android:text=""
 android:textColorHighlight="#FFFFFF" />
 <EditText
 android:id="@+id/editText1"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="110dp"
 android:layout_marginRight="110dp"
 android:layout_marginBottom="439dp"
 android:ems="10"
 android:hint="Enter the Number 1"
 android:inputType="textPersonName"
 android:text=""
 android:textColorHighlight="#FFFFFF" />
 <Button
 android:id="@+id/button"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="260dp"
 android:layout_marginRight="260dp"
 android:layout_marginBottom="175dp"
 android:text="ADD"
 android:textStyle="bold"
 android:onClick="add"
 app:backgroundTint="#E8F381" />
 <Button
 android:id="@+id/button3"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="266dp"
 android:layout_marginRight="266dp"
 android:layout_marginBottom="61dp"
 android:text="MUL"
 android:onClick="mul"
 app:backgroundTint="#A1FAA4" />
 <Button
 android:id="@+id/button4"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="108dp"
 android:layout_marginRight="108dp"
 android:layout_marginBottom="63dp"
 android:text="DIV"
 android:onClick="div"
 app:backgroundTint="#E6C28C" />
 <Button
 android:id="@+id/button2"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
android:layout_marginEnd="105dp"
 android:layout_marginRight="105dp"
 android:layout_marginBottom="182dp"
 android:text="SUB"
 android:onClick="sub"
 app:backgroundTint="#ECA9A9" />
 <TextView
 android:id="@+id/tv1"
 android:layout_width="86dp"
 android:layout_height="61dp"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="202dp"
 android:layout_marginRight="202dp"
 android:layout_marginBottom="274dp"
 android:text="0"
 android:textSize="36sp" />
</RelativeLayout>
JAVA-CODE
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
EditText e1,e2;
TextView tv;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 e1 =(EditText)findViewById(R.id.editText1);
 e2 = (EditText)findViewById(R.id.editText2);
 tv= (TextView)findViewById(R.id.tv1);
 }
 public void add(View v){
 int a1=Integer.parseInt(e1.getText().toString());
 int a2= Integer.parseInt(e2.getText().toString());
 int result=a1+a2;
tv.setText(""+result);
 }
 public void sub(View v){
 int a1=Integer.parseInt(e1.getText().toString());
 int a2= Integer.parseInt(e2.getText().toString());
 int result=a1-a2;
 tv.setText(""+result);
 }
 public void mul(View v){
 int a1=Integer.parseInt(e1.getText().toString());
 int a2= Integer.parseInt(e2.getText().toString());
 int result=a1*a2;
 tv.setText(""+result);
 }
 public void div(View v){
 float a1=Integer.parseInt(e1.getText().toString());
 float a2= Integer.parseInt(e2.getText().toString());
 float result=a1/a2;
 tv.setText(""+result);
 }
}



---------------------------------------------------------------------------------

P3-----

SIGNUP---

XML-CODE
<?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">
 <TextView
 android:layout_width="129dp"
 android:layout_height="45dp"
 android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="168dp"
 android:layout_marginRight="168dp"
 android:layout_marginBottom="596dp"
 android:text="Sign Up"
 android:textSize="24sp"
 android:textStyle="bold"
 app:layout_constraintBottom_toBottomOf="parent"
 app:layout_constraintLeft_toLeftOf="parent"
 app:layout_constraintRight_toRightOf="parent"
 app:layout_constraintTop_toTopOf="parent" />
 <EditText
 android:id="@+id/SignUp_email"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="114dp"
 android:layout_marginRight="114dp"
 android:layout_marginBottom="464dp"
 android:ems="10"
 android:hint="EmailId"
 android:inputType="textPersonName" />
 <Button
 android:id="@+id/signUpBtn"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="168dp"
 android:layout_marginRight="168dp"
 android:layout_marginBottom="245dp"
 android:text="Sign Up" />
 <EditText
 android:id="@+id/SignUp_Password"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
android:layout_marginEnd="101dp"
 android:layout_marginRight="101dp"
 android:layout_marginBottom="385dp"
 android:ems="10"
 android:hint="Password"
 android:inputType="textPassword" />
</RelativeLayout>
JAVA-CODE
package com.example.signupapplication;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import java.util.regex.Pattern;
public class MainActivity extends AppCompatActivity {
 EditText email_Sign, password_Sign;
 Button signUp_btn;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 email_Sign=(EditText)findViewById(R.id.SignUp_email);
 password_Sign=(EditText)findViewById(R.id.SignUp_Password);
 signUp_btn =(Button)findViewById(R.id.signUpBtn);
 signUp_btn.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
 String email = email_Sign.getText().toString();
 String password = password_Sign.getText().toString();
 if(!isValidPassword(password)) {
 Toast.makeText(MainActivity.this,"Password doesn't match
rules",Toast.LENGTH_SHORT).show();
 return;
 }
 Intent intent = new Intent(MainActivity.this,loginActivity.class);
 intent.putExtra("email",email);
 intent.putExtra("password",password);
startActivity(intent);
 }
 });
 }
 Pattern lowerCase= Pattern.compile("^.*[a-z].*$");
 Pattern upperCase=Pattern.compile("^.*[A-Z].*$");
 Pattern number = Pattern.compile("^.*[0-9].*$");
 Pattern special_Chara = Pattern.compile("^.*[^a-zA-Z0-9].*$");
 private Boolean isValidPassword(String password){
 if(password.length()<8) {
 return false;
 }
 if(!lowerCase.matcher(password).matches()) {
 return false;
 }
 if(!upperCase.matcher(password).matches()) {
 return false;
 }
 if(!number.matcher(password).matches()) {
 return false;
 }
 if(!special_Chara.matcher(password).matches()) {
 return false;
 }
 return true;
 }
 }


 ----
 LOGIN

XML-CODE
<?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=".loginActivity">
 <TextView
 android:id="@+id/loginTextView"
 android:layout_width="225dp"
 android:layout_height="45dp"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="113dp"
 android:layout_marginRight="113dp"
 android:layout_marginBottom="544dp"
 android:text="Login"
 android:textSize="30sp"
 android:textStyle="bold"
 app:layout_constraintBottom_toBottomOf="parent"
 tools:layout_editor_absoluteX="143dp" />
 <EditText
 android:id="@+id/passEditText"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="124dp"
 android:layout_marginRight="124dp"
 android:layout_marginBottom="380dp"
 android:ems="10"
 android:hint="password"
 android:inputType="textPassword" />
 <Button
 android:id="@+id/loginBtn"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"
 android:layout_marginEnd="218dp"
 android:layout_marginRight="218dp"
 android:layout_marginBottom="263dp"
 android:text="Login" />
 <EditText
 android:id="@+id/EmaileditText"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="127dp"
 android:layout_marginRight="127dp"
 android:layout_marginBottom="455dp"
 android:ems="10"
 android:hint="Email ID"
 android:inputType="textPersonName" />
</RelativeLayout>
JAVA-CODE
package com.example.signupapplication;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class loginActivity extends AppCompatActivity {
 EditText emailEditText,passwordEditText;
 Button login_btn;
 int counter=2;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_login2);
 emailEditText=(EditText)findViewById(R.id.EmaileditText);
 passwordEditText=(EditText)findViewById(R.id.passEditText);
 login_btn=(Button)findViewById(R.id.loginBtn);
 String registeredEmail = getIntent().getStringExtra("email");
 String registeredPassword= getIntent().getStringExtra("password");
 login_btn.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
String email = emailEditText.getText().toString();
 String password = passwordEditText.getText().toString();
 if(registeredEmail.equals(email) && registeredPassword.equals(password))
 {
 Intent intent= new Intent(loginActivity.this,loginsuccessActivity.class);
 startActivity(intent);
 }
 else {
 Toast.makeText(loginActivity.this,"Invalid
Credentials",Toast.LENGTH_SHORT).show();
 }
 counter--;
 if(counter==0){
 Toast.makeText(getBaseContext(),"failed to login
attempts",Toast.LENGTH_SHORT).show();
 login_btn.setEnabled(false);
 }
 }
 });
 }
}



LOGIN SUCCESSFUL

XML-CODE
<?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=".loginsuccessActivity">
 <TextView
 android:id="@+id/textView"
 android:layout_width="match_parent"
 android:layout_height="121dp"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="-11dp"
 android:layout_marginRight="-11dp"

android:layout_marginBottom="322dp"
 android:text="Login Successful"
 android:textSize="36sp"
 android:textStyle="bold" />
</RelativeLayout>
JAVA-CODE
package com.example.signupapplication;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
public class loginsuccessActivity extends AppCompatActivity {
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_loginsuccess);
 }
}





-----------------------------------------------------------------------------------------------------------

P4----

XML-CODE
<?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">
 <Button
 android:id="@+id/button1"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="167dp"
 android:layout_marginRight="167dp"
 android:layout_marginBottom="409dp"
 android:text="CLICK HERE" />
</RelativeLayout>
JAVA-CODE
package com.example.wallpaperchangeapplication;
import androidx.appcompat.app.AppCompatActivity;
import android.app.WallpaperManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import java.io.IOException;
import java.util.Timer;
import java.util.TimerTask;
public class MainActivity extends AppCompatActivity {
 Button wallpaperChange;
 Timer mytimer;
 Drawable drawable;
 WallpaperManager wpm;
 int prev=1;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 mytimer=new Timer();
 wpm = WallpaperManager.getInstance(this);
 wallpaperChange=(Button)findViewById(R.id.button1);
 wallpaperChange.setOnClickListener(new View.OnClickListener() {
 @Override public void onClick(View view) {
 setwallpaper();
 }
 });
 }
 private void setwallpaper() {
 Toast.makeText(this,"setting Wallpaper please wait.",Toast.LENGTH_LONG).show();
 mytimer.schedule(new TimerTask() {
 @Override
 public void run()
 {
 if(prev==1) {
 drawable = getResources().getDrawable(R.drawable.i1); prev = 2;
 }
 else if(prev==2) {
 drawable = getResources().getDrawable(R.drawable.i2); prev=3;
 }
else if(prev==3) {
 drawable = getResources().getDrawable(R.drawable.i3); prev=4;
 }
 else if(prev==4) {
 drawable = getResources().getDrawable(R.drawable.i4); prev=5;
 }
 else if(prev==5) {
 drawable = getResources().getDrawable(R.drawable.i5); prev=1;
 }
 Bitmap wallpaper = ((BitmapDrawable)drawable).getBitmap(); try {
 wpm.setBitmap(wallpaper);
 }
 catch (IOException e)
 { e.printStackTrace();
 }
 }
 },0,30000);
 }
 }



 ----------------------------------------------------------------------------------------------

 P5----

 XML-CODE
<?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">
 <TextView
 android:id="@+id/textView1"
 android:layout_width="332dp"
 android:layout_height="wrap_content"
 android:layout_alignParentStart="true"
 android:layout_alignParentLeft="true"
android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginStart="41dp"
 android:layout_marginLeft="41dp"
 android:layout_marginEnd="38dp"
 android:layout_marginRight="38dp"
 android:layout_marginBottom="516dp"
 android:text="Counter Application"
 android:textSize="36sp"
 android:textStyle="bold" />
 <Button
 android:id="@+id/button1"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="236dp"
 android:layout_marginRight="236dp"
 android:layout_marginBottom="89dp"
 android:text="Start"
 android:textSize="30sp"
 app:backgroundTint="#4CAF50" />
 <Button
 android:id="@+id/button2"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="55dp"
 android:layout_marginRight="55dp"
 android:layout_marginBottom="92dp"
 android:text="STOP"
 android:textSize="30sp"
 app:backgroundTint="#EC5449" />
 <TextView
 android:id="@+id/textView2"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"
 android:layout_marginEnd="165dp"
 android:layout_marginRight="165dp"
 android:layout_marginBottom="434dp"
 android:text="counter value"
 android:textSize="18sp"
 android:textStyle="bold" />
</RelativeLayout>
JAVA-CODE
package com.example.counterapplication;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
 TextView txtCounter;
 Button btn_start,btn_stop;
 int count=0;
 Handler customHandler=new Handler();
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 txtCounter= (TextView)findViewById(R.id.textView2);
 btn_start =(Button)findViewById(R.id.button1);
 btn_stop=(Button)findViewById(R.id.button2);
 btn_start.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
 customHandler.postDelayed(updateTimerThread,0);
 }
 });
 btn_stop.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
 customHandler.removeCallbacks(updateTimerThread);
 }
 });
 }
private final Runnable updateTimerThread =new Runnable() {
 @Override
 public void run() {
 txtCounter.setText(""+count);
 customHandler.postDelayed(this,1000);
 count++;
 }
 };
 }


 --------------------------------------------------------------------------------

 P7---

 XML-CODE:
<?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">
 <TextView
 android:id="@+id/textView"
 android:layout_width="335dp"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="21dp"
 android:layout_marginBottom="486dp"
 android:text="Text2Speech"
 android:textSize="30sp" />
 <EditText
 android:id="@+id/editText"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
android:layout_marginEnd="142dp"
 android:layout_marginBottom="377dp"
 android:ems="10"
 android:hint="Enter text here"
 android:inputType="textPersonName" />
 <Button
 android:id="@+id/convert"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="196dp"
 android:layout_marginBottom="236dp"
 android:onClick="convert"
 android:background="#6CEC71"
 android:text="CONVERT" />
</RelativeLayout>
JAVA-CODE:
package com.example.texttospeechapplication;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.speech.tts.TextToSpeech;
import android.view.View;
import android.widget.EditText;
import java.util.Locale;
public class MainActivity extends AppCompatActivity {
 EditText e1;
 TextToSpeech t1;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 e1=findViewById(R.id.editText);
 t1=new TextToSpeech(getApplicationContext(), new TextToSpeech.OnInitListener()
{
 @Override
 public void onInit(int status) {
if(status!=TextToSpeech.ERROR){
 t1.setLanguage(Locale.UK);
 }
 }
 });
 }
 public void convert(View V){
 String tospeak=e1.getText().toString();
 t1.speak(tospeak,TextToSpeech.QUEUE_FLUSH,null);
 }
}



----------------------------------------------------------------------------------------

P8------

XML-CODE:
<?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:id="@+id/Button11"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:backgroundTint="#4CAF50"
 tools:context=".MainActivity">
 <Button
 android:id="@+id/button8"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="169dp"
 android:layout_marginBottom="201dp"
 android:backgroundTint="#4CAF50"
 android:onClick="inputNumber"
android:text="8" />
 <Button
 android:id="@+id/Button10"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="286dp"
 android:layout_marginBottom="115dp"
 android:onClick="inputNumber"
 android:backgroundTint="#4CAF50"
 android:text="*" />
 <Button
 android:id="@+id/saveBtn"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="80dp"
 android:layout_marginBottom="38dp"
 android:backgroundTint="#CDDC39"
 android:text="Save" />
 <Button
 android:id="@+id/callBtn"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="209dp"
 android:layout_marginBottom="35dp"
 android:backgroundTint="#F44336"
 android:text="Call" />
 <Button
 android:id="@+id/clearBtn12"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="159dp"
 android:layout_marginBottom="116dp"
 android:backgroundTint="#4CAF50"
 android:onClick="inputNumber"
 android:text="0" />
 <Button
 android:id="@+id/Button7"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="288dp"
 android:layout_marginBottom="201dp"
 android:onClick="inputNumber"
 android:backgroundTint="#4CAF50"
 android:text="7" />
 <Button
 android:id="@+id/Button9"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="38dp"
 android:layout_marginBottom="201dp"
 android:onClick="inputNumber"
 android:backgroundTint="#4CAF50"
 android:text="9" />
 <EditText
 android:id="@+id/phoneNumberEditText"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="172dp"
 android:layout_marginBottom="543dp"
 android:onClick="inputNumber"
 android:ems="10"
 android:hint="Phone Number"
 android:inputType="phone" />
 <Button
 android:id="@+id/clearBtn"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="48dp"
 android:layout_marginBottom="544dp"
 android:backgroundTint="#E91E63"
 android:text="Clear" />
 <Button
 android:id="@+id/Button12"
android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="38dp"
 android:onClick="inputNumber"
 android:layout_marginBottom="108dp"
 android:backgroundTint="#4CAF50"
 android:text="#" />
 <Button
 android:id="@+id/Button1"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="291dp"
 android:onClick="inputNumber"
 android:layout_marginBottom="380dp"
 android:backgroundTint="#4CAF50"
 android:text="1" />
 <Button
 android:id="@+id/Button4"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="289dp"
 android:onClick="inputNumber"
 android:layout_marginBottom="296dp"
 android:backgroundTint="#4CAF50"
 android:text="4" />
 <Button
 android:id="@+id/Button5"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="170dp"
 android:onClick="inputNumber"
 android:layout_marginBottom="295dp"
 android:backgroundTint="#4CAF50"
 android:text="5" />
 <Button
 android:id="@+id/Button6"
 android:layout_width="wrap_content"
android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="35dp"
 android:layout_marginBottom="290dp"
 android:onClick="inputNumber"
 android:backgroundTint="#4CAF50"
 android:text="6" />
 <Button
 android:id="@+id/Button2"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="172dp"
 android:onClick="inputNumber"
 android:layout_marginBottom="380dp"
 android:backgroundTint="#4CAF50"
 android:text="2" />
 <Button
 android:id="@+id/Button3"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentBottom="true"
 android:layout_marginEnd="48dp"
 android:onClick="inputNumber"
 android:layout_marginBottom="380dp"
 android:backgroundTint="#4CAF50"
 android:text="3" />
</RelativeLayout>


JAVA-CODE:
package com.example.callsaveapplication;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import java.net.URI;
public class MainActivity extends AppCompatActivity {
EditText phoneNumberEditText;
Button clearBtn,saveBtn,callBtn;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 phoneNumberEditText=findViewById(R.id.phoneNumberEditText);
 clearBtn=findViewById(R.id.clearBtn);
 callBtn=findViewById(R.id.callBtn);
 saveBtn=findViewById(R.id.saveBtn);
 clearBtn.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
 phoneNumberEditText.setText("");
 }
 });
 callBtn.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
 String phoneNumber=phoneNumberEditText.getText().toString();
 Intent intent= new Intent(Intent.ACTION_DIAL);
 intent.setData(Uri.parse("tel:"+phoneNumber));
 startActivity(intent);
 }
 });
 saveBtn.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
 String phoneNumber=phoneNumberEditText.getText().toString();
 Intent intent=new Intent(Intent.ACTION_INSERT);
 intent.setType(ContactsContract.Contacts.CONTENT_TYPE);
 intent.putExtra(ContactsContract.Intents.Insert.PHONE,phoneNumber);
 startActivity(intent);
 }
 });
}
 public void inputNumber(View v){
 Button btn=(Button)v;
 String digit=btn.getText().toString();
 String phoneNumber=phoneNumberEditText.getText().toString();
 phoneNumberEditText.setText(phoneNumber+digit);
 }
}