Android Button onclick | Event Handler

ANDROID CODE FOR FRESHERS

Android Button onclick | Event Handler 

 

Java Code(EventAct )

import android.app.Activity; import android.content.Intent; import android.graphics.Color; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.LinearLayout; public class EventAct extends Activity { LinearLayout l1; Button b1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_event); l1=(LinearLayout)findViewById(R.id.l1); b1=(Button)findViewById(R.id.b1); b1.setOnLongClickListener(new View.OnLongClickListener() { @Override public boolean onLongClick(View v) { l1.setBackgroundColor(Color.RED); return false; } }); } public void click(View v) { l1.setBackgroundColor(Color.GREEN); } }

Layout XML Code(activity_event)

<?xml version="1.0" encoding="utf-8"?> <LinearLayout 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:id="@+id/l1" android:orientation="vertical" 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="com.andro.tech.androidproject.EventAct"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="@dimen/textsize" android:layout_gravity="center" android:textStyle="bold" android:text="EVENT HANDLER" android:layout_marginBottom="150dp" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center" android:textSize="10sp" android:text="CLICK ME" android:onClick="click" android:layout_marginBottom="10dp"/> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center" android:textSize="10sp" android:text="LONG PRESS" android:id="@+id/b1" android:layout_marginBottom="80dp"/> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="@string/sourcecode" android:background="@color/bgcolor" android:textStyle="bold" android:textColor="@color/text"/> </LinearLayout>   Output :            Download Android Source Code   For More Android Programs - Click Here   Follow Us – Never Miss Update Fb/Page, Twitter, Google+, Instagram, Pinterest