Android TextView以编程方式填充整行

在我的代码中，我动态创建行，对于某些行，我需要

TextView

填充整行而不是第一个单元格，即：

--------------------
|    Welcome       |
|------------------|
|cell1|cell2|cell3 |
|------------------|
|cell1|cell2|cell3 |
--------------------

我的代码：

TableRow welcome_row= new TableRow(getBaseContext());
TextView welcome= new TextView(getBaseContext());
welcome.setText("Welcome");
table.addView(welcome_row,new TableLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));

如何让welcome

Textview

填满整行？

试试这个

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        TableLayout tableLayout = new TableLayout(this);
        tableLayout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT));

        TableRow welcome_row = new TableRow(this);
        welcome_row.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT));
        welcome_row.setGravity(Gravity.CENTER);
        welcome_row.setBackgroundColor(Color.GRAY);

        TextView welcome = new TextView(this);
        welcome.setText("Welcome!");
        welcome.setBackgroundColor(Color.GREEN);

        // add textview to table row
        welcome_row.addView(welcome);

        // add table row to table
        tableLayout.addView(welcome_row);

        setContentView(tableLayout);
    }
}

参考此