Android Quote app, Next and Back buttons

Question

I'm trying to make a simple quote application, but every time I click the back button after the next button, it goes to the next array, not back. I use int num to track with the quote the user is included. here is my back button

package me.me.quote; public class Startme extends Activity { Random gen= new Random(); int num; String[] quotes = new String[15]; public void next(View N){ quotes[0]= "Love is timeless"; quotes[1]= "I hate you"; quotes[2]= "arggg!"; quotes[3]= "The end is near"; quotes[4]= "Leave be"; if(num == 5){ num =0;} TextView text = (TextView) findViewById(R.id.Quote); text.setText(quotes[num++]); TextView number = (TextView) findViewById(R.id.Qn); number.setText(""+num); } public void back(View B){ quotes[0]= "Love is timeless"; quotes[1]= "I hate you"; quotes[2]= "arggg!"; quotes[3]= "The end is near"; quotes[4]= "Leave be"; TextView text = (TextView) findViewById(R.id.Quote); text.setText(quotes[num--]); TextView number = (TextView) findViewById(R.id.Qn); number.setText(""+num);} public void rand(View G) { num = gen.nextInt(5); quotes[0]= "Love is timeless"; quotes[1]= "I hate you"; quotes[2]= "arggg!"; quotes[3]= "The end is near"; quotes[4]= "Leave be"; TextView text = (TextView) findViewById(R.id.Quote); text.setText(quotes[num]); TextView number = (TextView) findViewById(R.id.Qn); number.setText(""+num); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); this.setContentView(R.layout.startquotes); TextView Dark=(TextView)findViewById(R.id.Quote); Typeface face=Typeface.createFromAsset(getAssets(), "fonts/font1.ttf"); Dark.setTypeface(face); } } 

Answer 1

// LAYOUT FILE text.xml

  <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <TextView android:id="@+id/textView" android:layout_width="wrap_content" android:layout_height="50dp" android:layout_alignParentTop="true" android:text="VISIBLE EVERY TIME" android:visibility="visible" /> <Button android:id="@+id/back" android:layout_width="wrap_content" android:layout_alignParentLeft="true" android:layout_height="wrap_content" android:layout_below="@+id/textView" android:text="NEXT" > </Button> <Button android:id="@+id/next" android:layout_alignParentRight="true" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/textView" android:text="BACK" > </Button> </RelativeLayout> 

/// CLASS OF ACTIVITY

  import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.TextView; public class Test extends Activity { Button next; Button back ; TextView quoteText; int currentSelectedQuote=0; String[] quote={"QUOTE1","QUOTE2","QUOTE3","QUOTE4","QUOTE5",}; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.text); quoteText=(TextView)findViewById(R.id.textView); quoteText.setText(quote[currentSelectedQuote]); next=(Button)findViewById(R.id.next); next.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { currentSelectedQuote++; if(currentSelectedQuote == 5){ currentSelectedQuote =0;} quoteText.setText(quote[currentSelectedQuote]); } }); back=(Button)findViewById(R.id.back); back.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if(currentSelectedQuote==0) { currentSelectedQuote=4; } else { currentSelectedQuote--; } quoteText.setText(quote[currentSelectedQuote]); // TODO Auto-generated method stub } }); } }