Linux - How to alert a message, Alert text message in android

How to alert a message

In Xml code create the button then call the onclick event function in java

 <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"
 android: paddingBottom="@dimen/activity_vertical_margin"
 android: paddingLeft="@dimen/activity_horizontal_margin"
 android: paddingRight="@dimen/activity_horizontal_margin"
 android: paddingTop="@dimen/activity_vertical_margin"
 tools:context=".MainActivity" >
 
 <EditText
 android:id="@+id/mnum"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_above="@+id/button1"
 android:layout_alignParentLeft="true"
 android:layout_marginBottom="30dp"
 android:layout_marginLeft="96dp"
 android:ems="10" />
 <Button
 android:id="@+id/button1"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignLeft="@+id/email"
 android:layout_alignParentTop="true"
 android:layout_marginLeft="46dp"
 android:layout_marginTop="170dp"
 android:onClick="searchInUrl"
 android:text="@string/button1" />

 </RelativeLayout>

In MainActivity.java

 package com.firstapp;
 import android.widget.EditText;
 import android.widget.TextView;
 import android.widget.Toast;
 
 public class MainActivity extends Activity {
 public EditText mnum,memail;

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

 }
 
 public void searchInUrl(View clickedButton) {
 mnum = (EditText)findViewById(R.id.mnum); // Get id of text box
 String mnumval= mnum.getText().toString();// Get the value of text box
 Toast.makeText(getApplicationContext(), memailval+"-#"+mnumval, Toast.LENGTH_SHORT).show(); // alert the value of textbox
 }

The topic on Linux - How to alert a message is posted by - Math

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