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POAdvice with for loop
 

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    <p>so I've been making mathematical programs for Android for a while, and I've come across a problem where i need to print a range of numbers using a for loop, I'm not sure how to enable my program to print the variables the way I'd like, I've tried TextView, but it only shows the first variable, do I need to use ListView? and how do set the text into it? here's my xml and code files that I've tried so far:</p> <p>class:</p> <pre><code>public class Screen extends ListActivity { public EditText txtbound1; private double a = 0; private double b1 = 0; private double c = 0; //LIST OF ARRAY STRINGS WHICH WILL SERVE AS LIST ITEMS ArrayList&lt;String&gt; listItems=new ArrayList&lt;String&gt;(); //DEFINING STRING ADAPTER WHICH WILL HANDLE DATA OF LISTVIEW ArrayAdapter&lt;String&gt; adapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.screen1); Bundle b = getIntent().getExtras(); double bound = b.getDouble("name"); adapter=new ArrayAdapter&lt;String&gt;(this, android.R.layout.simple_list_item_1, listItems); setListAdapter(adapter); //METHOD WHICH WILL HANDLE DYNAMIC INSERTION //public void addItems(View v) { // listItems.add("Clicked : "+clickCounter++); // adapter.notifyDataSetChanged(); for(double i = bound;i&gt;0;i--) { a = bound; b1 = a * 2; c = a*3; bound--; } } public void addItems(double a, double b1, double c) { // or you can parse it before and have string parameters listItems.add(Double.toString(a) + " " + Double.toString(b1) + " " + Double.toString(c)); adapter.notifyDataSetChanged(); } } </code></pre> <p>and layout is:</p> <pre><code>&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" &gt; &lt;Button android:id="@+id/addBtn" android:text="Add New Item" android:layout_width="fill_parent" android:layout_height="wrap_content" android:onClick="addItems"/&gt; &lt;ListView android:id="@android:id/list" android:layout_width="fill_parent" android:layout_height="fill_parent" android:drawSelectorOnTop="false" /&gt; &lt;/LinearLayout&gt; </code></pre> <p>so lets say the user inputs 5 as bound, I'd like to to be displayed as such:</p> <ul> <li>A B C</li> <li>5 10 15</li> <li>4 8 12</li> <li>3 6 9</li> <li>2 4 6</li> <li>1 2 3</li> </ul> <p>however it only displays the 5 10 and 15 line, how do I edit the for loop so it works? Do i need to set a, b1 and c as an array ? or will ListView work? I've never used ListView before so if ListView is what I need please show me how to initialise it in the xml layout and how to print the variables to it as I've done previous, Thanks </p>
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