Loop

while loop
setup counter variable, condition, update counter variable

int index = 0;
while(index < 4){

	Log.v("NumbersActivity",
		"Index: " + index + "
		value: " + words[index]);

		index++;
}

for loop

for(int index = 0; index < words.size(); index++){
	log.v("NumbersActivity",
		"Index: " + index +
		"Value: " + words.get(index));
}

import androis.os.Bundle;
import android.support.v7.app.AppCompactActivity;
import android.widget.LinearLayout;
import android.widget.TextView;

import java.util.ArrayList;

package com.example.android.miwok;

public class NumbersActivity extends AppCompactActivity {

	@Override
	protected void onCreate(Bundle savedInstanceState){
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_numbers);

		// Create on array of words
		ArrayList words = new ArrayList();

        words.add("one");
        words.add("two");
        words.add("three");
        words.add("four");
        words.add("five");
        words.add("six");
        words.add("seven");
        words.add("eight");
        words.add("nine");
        words.add("ten");

		LinearLayout rootView = (LinearLayout)findViewById(R.id.rootView);

		for (int index = 0; index < words.size(); index++)
		{
			TextView wordView = new TextView(this);
			wordView.setText(words.get(index));
			rootView.addView(wordView);
			index++;
		}
	}
}