以编程方式将TableRow添加到TableLayout不起作用

我试图通过编程方式在这里添加表格行

/* Find Tablelayout defined in main.xml */ TableLayout tl = (TableLayout) findViewById(R.id.SaleOrderLines); /* Create a new row to be added. */ TableRow tr = new TableRow(this); tr.setLayoutParams(new TableRow.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT)); /* Create a Button to be the row-content. */ Button b = new Button(this); b.setText("Dynamic Button"); b.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT)); /* Add Button to row. */ tr.addView(b); /* Add row to TableLayout. */ //tr.setBackgroundResource(R.drawable.sf_gradient_03); tl.addView(tr, new TableLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT)); 

但是,屏幕上没有任何东西。 (和这里提到的一样)

当我添加tr.setBackgroundResource(R.drawable.sf_gradient_03); ,具有背景图像的行被绘制而不是button

这是我的布局

 <!-- Sale Order Lines START --> <LinearLayout android:id="@+id/SaleOrderLinesArea" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="10dip" android:background="@drawable/sf_gradient_11" > <LinearLayout android:id="@+id/subHeaderArea" android:padding="10dip" android:layout_width="fill_parent" android:layout_height="wrap_content" > <TextView android:id="@+id/screenTitle" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="@color/title_sub" android:textStyle="bold" android:text="Order Lines" /> </LinearLayout> <TableLayout android:id="@+id/SaleOrderLines" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="10dip" android:stretchColumns="*"> <TableRow android:background="@drawable/sf_gradient_13" android:padding="10dip" > <TextView android:id="@+id/order_ref_label" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textColor="@color/fg_prime" android:text="bLA bLA" /> <TextView android:id="@+id/product_label" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textStyle="bold" android:textColor="@color/fg_title" android:text="@string/product" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textStyle="bold" android:textColor="@color/fg_title" android:text="@string/product_quantity" /> </TableRow> <TableRow android:background="@drawable/sf_gradient_03" android:paddingLeft="10dip" android:paddingRight="10dip" > <TextView android:id="@+id/order_ref_label" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textColor="@color/fg_prime" android:text="Fooo" /> <Spinner android:id="@+id/product_spinner" android:layout_width="wrap_content" android:layout_height="wrap_content" android:prompt="@string/customer_prompt"> </Spinner> <EditText android:id="@+id/product_uom_qty" android:layout_width="wrap_content" android:layout_height="wrap_content" android:singleLine="true" android:fadingEdge="horizontal" /> </TableRow> </TableLayout> <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:paddingTop="5dip" android:paddingBottom="5dip"> <Button android:id="@+id/add_button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Add Lines" /> </LinearLayout> </LinearLayout> <!-- Sale Order Lines END --> 

明白了,每个LayoutParams应该是android.widget.TableRow.LayoutParams除了提供给tl.addView(...)

 /* Find Tablelayout defined in main.xml */ TableLayout tl = (TableLayout) findViewById(R.id.SaleOrderLines); /* Create a new row to be added. */ TableRow tr = new TableRow(this); tr.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.FILL_PARENT, TableRow.LayoutParams.WRAP_CONTENT)); /* Create a Button to be the row-content. */ Button b = new Button(this); b.setText("Dynamic Button"); b.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.FILL_PARENT, TableRow.LayoutParams.WRAP_CONTENT)); /* Add Button to row. */ tr.addView(b); /* Add row to TableLayout. */ //tr.setBackgroundResource(R.drawable.sf_gradient_03); tl.addView(tr, new TableLayout.LayoutParams(TableLayout.LayoutParams.FILL_PARENT, TableLayout.LayoutParams.WRAP_CONTENT)); 

请注意,可能是你的代码是完美的,但是你使用的类是不正确的。 您可能已经使用import android.view.ViewGroup.LayoutParams ,正确的类可以从下面的导入语句:

导入android.widget.TableRow.LayoutParams