Question

Im trying to make a simple quote app, but every time I hit my back button after my next button it will go to the next array and not backwards. Im using an int num to keep track of with quote the user is on.
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>

///ACTIVITY CLASS

 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

                }
            });





        }

    }