Google Android - это несложно

Код: Выделить всё

	private String[] data = new String[81];
	private GridView gvMain;
	private ArrayAdapter<String> adapter;

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

		init();
	}

	private void init() {

		for (int i = 0; i < 81; i++) {
			data[i] = String.valueOf(i + 1);
		}

		adapter = new ArrayAdapter<String>(this, R.layout.item, R.id.tvText, data);
		gvMain = (GridView) findViewById(R.id.gvMain);
		gvMain.setAdapter(adapter);
		gvMain.setOnItemClickListener(this);
		adjustGridView();
	}

	private void adjustGridView() {
		gvMain.setNumColumns(9);
		gvMain.setHorizontalSpacing(3);
		gvMain.setVerticalSpacing(3);
	}

	public void onItemClick(AdapterView<?> arg0, View arg1, int position, long id) {
		TextView tv = (TextView)findViewById(R.id.Time);
		tv.setText(String.valueOf(position+1));
		LinearLayout layout = (LinearLayout)findViewById(R.layout.item);
		layout.setBackgroundColor(Color.BLUE);
		
	}

Код: Выделить всё

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/rect_gray"
    android:gravity="center"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/tvText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:minHeight="35dp"
        android:text=""
        android:textSize="20sp" >
    </TextView>

</LinearLayout>