以编程方式将 TableRow 添加到 TableLayout 不起作用
我尝试按照代码此处以编程方式添加表格行
/* 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));
,但屏幕上没有绘制任何内容。 (与此处提到的相同)
当我添加 tr.setBackgroundResource(R .drawable.sf_gradient_03);
,绘制了带有背景图像的行,但没有绘制按钮
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 -->
I'm trying to add table rows programmatically following the code here
/* 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));
But but nothing is drawn to the screen. (same as one mentioned here)
When i added tr.setBackgroundResource(R.drawable.sf_gradient_03);
, the row with the background image is drawn but not the button
Here is my Layout
<!-- 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 -->
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明白了,每个
LayoutParams
都应该是android.widget.TableRow.LayoutParams
,除了提供给tl.addView(...)
的那个。Got it, every
LayoutParams
should be ofandroid.widget.TableRow.LayoutParams
except one that supplied totl.addView(...)
请注意,可能您的代码是完美的,但您使用的类不正确。您可能使用过
import android.view.ViewGroup.LayoutParams
,其中可以从以下 import 语句获取正确的类:Please do note that, may be your code is perfect but the classes you are using are not proper. You may have used
import android.view.ViewGroup.LayoutParams
, where as the correct class is available from following import statement :就我而言,我将宽度从
TableRow.LayoutParams.WRAP_CONTENT
更改为TableRow.LayoutParams.MATCH_PARENT
,然后它就可以工作了。In my case, I changed the width from
TableRow.LayoutParams.WRAP_CONTENT
toTableRow.LayoutParams.MATCH_PARENT
, then it works.