Toast Example

In Android, Toast is a notification message that pop up, display a certain amount of time.

The toast message automatically fades in and out on the surface of the current screen and only fills the amount of space required for the message. A toast message does not accept user input. The user’s current activity remains visible and interactive when a toast message pops up. The toast message can appear even if the application isn’t visible.

In this tutorial we will show how to create a simple Toast message :

File : res/layout/activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

    <TextView
        android:id="@+id/txt_value"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="20dp"
        android:layout_marginTop="22dp"
        android:text="@string/Value" />

   <EditText
        android:id="@+id/edt_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/txt_value"
        android:layout_below="@+id/txt_value"
        android:layout_marginTop="18dp"
        android:ems="10" />

    <Button
        android:id="@+id/btn_click"
        style="?android:attr/buttonStyleSmall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/edt_name"
        android:layout_toRightOf="@+id/edt_name"
        android:text="@string/btn_value" />


</RelativeLayout>


File : res/values/strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string name="app_name">MyFirstApp</string>
    <string name="hello_world">My First Android App</string>
    <string name="menu_settings">Settings</string>
    <string name="Value">Enter your name</string>
    <string name="btn_value">Click</string>


</resources>


File : MainActivity.java


package com.example.toastexample;

import com.example.myfirstapp.R;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {

private EditText edtName;
private Button btnCick;

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

initialize();

this.btnCick.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
String edtValue = edtName.getText().toString();
showToast(edtValue);
}
});
}

private void initialize() {
this.edtName = (EditText) findViewById(R.id.edt_name);
this.btnCick = (Button) findViewById(R.id.btn_click);
}

private void showToast(String name) {
// TODO Auto-generated method stub
Toast.makeText(getApplicationContext(), "Hai " + name,
Toast.LENGTH_LONG).show();
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}

}


See demo, when a button is clicked, display a Toast message.