EVENT HANDLING ANDROID

EVENT HANDLING ANDROID

MAIN ACTIVITY.JAVA

package com.httptesting.boston_one;

import android.app.Activity;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends Activity {

    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button b=(Button)findViewById(R.id.buttonViraj);
        b.setOnClickListener(
               new  Button.OnClickListener()
               {
                   public void onClick(View v)
                   {
                       TextView tv=(TextView)findViewById(R.id.textViraj);
                       tv.setText("it work");
                   }
               }

                );
        b.setOnLongClickListener(
                new Button.OnLongClickListener()
                {
                    public boolean onLongClick(View v)
                    {
                        TextView tv=(TextView)findViewById(R.id.textViraj);
                        tv.setText("on long click");
                        return true;
                    }
                }

        );
    }
}

=======================================================================================

<?xml version="1.0" encoding="utf-8"?><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="com.httptesting.boston_one.MainActivity">

    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textAppearance="?android:attr/textAppearanceLarge"        android:text="@string/viraj"        android:id="@+id/textViraj"        android:layout_alignParentTop="true"        android:layout_centerHorizontal="true"        android:layout_marginTop="72dp" />

    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/submit"        android:id="@+id/buttonViraj"        android:layout_centerVertical="true"        android:layout_centerHorizontal="true"        android:onClick="onclick"/>
</RelativeLayout>