//activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
    android:background="@drawable/tlo" >

    <TextView
        android:id="@+id/textView5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/string1"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="64dp"
        android:layout_marginTop="88dp"
        android:text="@string/string2"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="120dp"
        android:text="@string/string3"
        app:layout_constraintEnd_toStartOf="@+id/textView4"
        app:layout_constraintHorizontal_bias="0.32"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView5" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="92dp"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:text="@string/string4"
        app:layout_constraintBottom_toTopOf="@+id/textView5"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.734"
        app:layout_constraintStart_toEndOf="@+id/textView" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="76dp"
        android:layout_marginEnd="56dp"
        android:text="@string/string5"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent" />

</android.support.constraint.ConstraintLayout>



//MainActivity

package com.example.user.lab22;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toast.makeText(this, "Metoda onCreate", Toast.LENGTH_LONG).show();

    }
    @Override
    protected void onResume(){
        super.onResume();
        Toast.makeText(this, "Metoda onResume", Toast.LENGTH_LONG).show();
    }

    @Override
    protected void onStart(){
        super.onStart();
        Toast.makeText(this, "Metoda onStart", Toast.LENGTH_LONG).show();
    }

    @Override
    protected void onPause(){
        super.onPause();
        Toast.makeText(this, "Metoda OnPause", Toast.LENGTH_LONG).show();
    }

    @Override
    protected void onStop(){
        super.onStop();
        Toast.makeText(this, "Metoda onStart", Toast.LENGTH_LONG).show();
    }

    @Override
    public void onRestart(){
        super.onRestart();
        Toast.makeText(this, "Metoda onRestart", Toast.LENGTH_LONG).show();
    }
}