Click

public class MainActivity extends Activity
{
    /** Called when the activity is first created. */
    GLSurfaceView glView;
    Button btnUp;
    Button btnDown;
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        glView=new GLSurfaceView(this);
        glView.setRenderer(new GLRenderer());
        setContentView(glView);
     btnUp=(Button)findViewById(R.id.up);
     btnDown=(Button)findViewById(R.id.down);
        LinearLayout layout = new LinearLayout(this);
        layout.setOrientation(LinearLayout.VERTICAL);
        layout.setGravity(Gravity.BOTTOM | Gravity.LEFT);
        LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT,
                LinearLayout.LayoutParams.MATCH_PARENT);

        LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        View linearLayoutView = inflater
                .inflate(R.layout.updown, layout, false);
        layout.addView(linearLayoutView);
        btnUp.setOnClickListener(new OnClickListener(){
            public void onClick(View v){

            }
        });
      addContentView(layout, layoutParams);

}

}