Android动态生成控件

MainActivity:

public class MainActivity extends AppCompatActivity {
    private final int WC = ViewGroup.LayoutParams.WRAP_CONTENT;
    private final int MP = ViewGroup.LayoutParams.MATCH_PARENT;
    private EditText row;
    private EditText column;
    private Button bt1;
    private TableLayout tableLayout;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        bt1 = (Button) findViewById(R.id.button1);
        row = (EditText) findViewById(R.id.editText1);
        column = (EditText) findViewById(R.id.editText2);

        bt1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (row.getText().length() > 0 && column.getText().length() > 0) {
                    int row_int = Integer.parseInt(row.getText().toString());
                    int col_int = Integer.parseInt(column.getText().toString());

                    tableLayout = (TableLayout) findViewById(R.id.table1);
                    tableLayout.removeAllViews();
                    tableLayout.setStretchAllColumns(true);
                    for (int i = 1; i <= row_int; i++) {
                        TableRow tableRow = new TableRow(MainActivity.this);
                        for(int j = 1; j <= col_int; j++) {
                            TextView tv = new TextView(MainActivity.this);
                            tv.setText("(" + i + "," + j + ")");
                            tableRow.addView(tv);
                        }
                        tableLayout.addView(tableRow, new TableLayout.LayoutParams(MP, WC, 1));
                    }
                }
                else {
                    Toast.makeText(MainActivity.this, "请输入行和列", Toast.LENGTH_SHORT).show();
                }
            }
        });
    }
}

activity_main:

<?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="wrap_content"
    android:orientation="vertical">

    <LinearLayout
        android:layout_weight="1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:gravity="center_vertical"
            android:layout_marginLeft="10dp"
            android:textSize="20sp"
            android:text="行"/>

        <EditText
            android:id="@+id/editText1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:ems="10"
            android:hint="请输入数字！"
            android:numeric="decimal">
            <requestFocus/>
        </EditText>
    </LinearLayout>

    <LinearLayout
        android:layout_weight="1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:gravity="center_vertical"
            android:layout_marginLeft="10dp"
            android:textSize="20sp"
            android:text="列"/>

        <EditText
            android:id="@+id/editText2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:ems="10"
            android:hint="请输入数字！"
            android:numeric="decimal">

        </EditText>

    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/button1"
            android:text="生成表格"/>
    </LinearLayout>

    <TableLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/table1"> </TableLayout>

</LinearLayout>