content: package com.dk.demo.matrix;
  
  import android.annotation.SuppressLint;
  import android.app.Activity;
  import android.content.Intent;
  import android.os.Bundle;
  import android.view.LayoutInflater;
  import android.view.View;
  import android.view.ViewGroup;
  import android.widget.AdapterView;
  import android.widget.BaseAdapter;
  import android.widget.ListView;
  import android.widget.TextView;
  import android.widget.AdapterView.OnItemClickListener;
  
  public class MainActivity extends Activity {
  	private ListView mListView;
  	final private static String[] strings = new String[] { "ROTATE",
  			"TRANSLATE", "SCALE", "SKEW" };
  
  	@Override
  	protected void onCreate(Bundle savedInstanceState) {
  		super.onCreate(savedInstanceState);
  		setContentView(R.layout.activity_main);
  		mListView = (ListView) findViewById(R.id.list);
  		mListView.setAdapter(new SubViewAdapter());
  		mListView.setOnItemClickListener(mOnItemClickListener);
  	}
  
  	private OnItemClickListener mOnItemClickListener = new OnItemClickListener() {
  
  		@Override
  		public void onItemClick(AdapterView<?> parent, View view, int position,
  				long id) {
  			Intent intent = new Intent(MainActivity.this, MatrixActivity.class);
  			switch (position) {
  			case 0:
  				intent.putExtra(MatrixActivity.KEY_ACTION,
  						MatrixActivity.ACTION_ROTATE);
  				break;
  			case 1:
  				intent.putExtra(MatrixActivity.KEY_ACTION,
  						MatrixActivity.ACTION_TRANSLATE);
  				break;
  			case 2:
  				intent.putExtra(MatrixActivity.KEY_ACTION,
  						MatrixActivity.ACTION_SCALE);
  				break;
  			case 3:
  				intent.putExtra(MatrixActivity.KEY_ACTION,
  						MatrixActivity.ACTION_SKEW);
  				break;
  			}
  			startActivity(intent);
  		}
  	};
  
  	class SubViewAdapter extends BaseAdapter {
  
  		@Override
  		public int getCount() {
  			return strings.length;
  		}
  
  		@Override
  		public Object getItem(int position) {
  			return strings[position];
  		}
  
  		@Override
  		public long getItemId(int position) {
  			return position;
  		}
  
  		@SuppressLint("InflateParams")
  		@Override
  		public View getView(int position, View convertView, ViewGroup parent) {
  			if (convertView == null) {
  				convertView = LayoutInflater.from(MainActivity.this).inflate(
  						R.layout.view_mainlist_item, null);
  			}
  			((TextView) convertView.findViewById(R.id.list_item_text))
  					.setText(strings[position]);
  			return convertView;
  		}
  
  	}
  }
  