This tutorial will teach you how to make make a Currency Converter app Using Android Studio step by step.it will help you convert the currency easily.
We made the layout design in activity_main.xml
activity_main.xml
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 | <?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" android:gravity="center" android:orientation="vertical" tools:context=".MainActivity"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Currency Converter" android:textSize="30sp" /> </LinearLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal"> <EditText android:id="@+id/txtuname" android:layout_width="wrap_content" android:layout_height="wrap_content" android:ems="10" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Enter the Username" /> </LinearLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal"> <EditText android:id="@+id/txt" android:layout_width="wrap_content" android:layout_height="wrap_content" android:ems="10" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Messgae" /> </LinearLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal"> <Button android:id="@+id/btn1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@color/colorAccent" android:text="ADD" /> </LinearLayout> </LinearLayout> |
MainActivity
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 | package com.example.kobinath.currency; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.Spinner; import android.widget.Toast; public class MainActivity extends AppCompatActivity { Spinner sp1,sp2; EditText ed1; Button b1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); sp1 = findViewById(R.id.spfrom); sp2 = findViewById(R.id.spto); ed1 = findViewById(R.id.txtamt); String[] from = {"USD"}; ArrayAdapter ad = new ArrayAdapter<String>(this,R.layout.support_simple_spinner_dropdown_item,from); sp1.setAdapter(ad); String[] to = {"Indian Rupees","Srilankan Rupees"}; ArrayAdapter ad1 = new ArrayAdapter<String>(this,R.layout.support_simple_spinner_dropdown_item,to); sp2.setAdapter(ad1); b1 = findViewById(R.id.btn1); b1.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Double tot; Double amt = Double.parseDouble(ed1.getText().toString()); if(sp1.getSelectedItem().toString() == "USD" && sp2.getSelectedItem().toString() == "Indian Rupees") { tot = amt * 70.0; Toast.makeText(getApplicationContext(),tot.toString(),Toast.LENGTH_LONG).show(); } else if(sp1.getSelectedItem().toString() == "USD" && sp2.getSelectedItem().toString() == "Srilankan Rupees") { tot = amt * 179.0; Toast.makeText(getApplicationContext(),tot.toString(),Toast.LENGTH_LONG).show(); } } }); } } |
I have attached the video tutorial below it will help you to do this step by step.
