Part 12 - Students Problem Solving

 Java Part : 

package first.learn.passingdatabetweenactivities;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    EditText etName;
    Button btnSimpleString;

    TextView textTwo,
    textOne;


    void  add (int a, int b){
        int c = a+b;
        textTwo.setText(""+c);
    }

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

        textTwo = (TextView)findViewById(R.id.textTwo);

       add (10, 20);






        etName = (EditText) findViewById(R.id.etName);

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

       

    }
}

Xml Part : 

<?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"
    tools:context=".MainActivity"
    android:orientation="vertical"
    android:layout_margin="16dp">



    <TextView
        android:hint="Text One... "
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/textOne"/>


    <TextView
        android:hint="Text two... "
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/textTwo"/>

   <EditText
       android:layout_marginTop="25dp"
       android:hint="write...."
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:id="@+id/etName"/>

    <Button
        android:id="@+id/btnSimpleString"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Simple String"/>

</LinearLayout>