不显示动态添加表行 [英] Dynamically added table rows not appearing

问题描述

我所看到的关于动态添加表行很多帖子，但我不知道我错过了什么。

当我执行以下，不会显示任何内容（除了应用程序标题栏）。

我的布局：

 ＆LT;？XML版本=1.0编码=UTF-8＆GT？;
＆LT; RelativeLayout的
        机器人：ID =@ + ID / table_view_test_main
        机器人：layout_width =FILL_PARENT
        机器人：layout_height =FILL_PARENT
        的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
        ＆GT;
    ＆LT;滚动型
            机器人：ID =@ + ID / tvt_scroll
            机器人：layout_width =FILL_PARENT
            机器人：layout_height =FILL_PARENT
            机器人：layout_alignParentTop =真
            机器人：layout_alignParentLeft =真
            ＆GT;
        ＆LT; RelativeLayout的
                机器人：ID =@ + ID / tvt_scroll_relative
                机器人：layout_width =FILL_PARENT
                机器人：layout_height =FILL_PARENT＆GT;
            ＆LT; TableLayout
                    机器人：ID =@ + ID / tvt_tableview
                    机器人：layout_width =FILL_PARENT
                    机器人：layout_height =WRAP_CONTENT
                    ＆GT;
            ＆LT; / TableLayout＆GT;
        ＆LT; / RelativeLayout的＆GT;
    ＆LT; /滚动型＆GT;
＆LT; / RelativeLayout的＆GT;
 

我的活动：

 保护无效的onCreate（捆绑savedInstanceState）{
    super.onCreate（savedInstanceState）;
    的setContentView（R.layout.table_view）;    TableLayout tableLayout =（TableLayout）findViewById（R.id.tvt_tableview）;    的TableRow的TableRow =新的TableRow（本）;
    tableRow.setLayoutParams（新TableRow.LayoutParams（TableRow.LayoutParams.FILL_PARENT，TableRow.LayoutParams.WRAP_CONTENT））;    TextView中列1 =新的TextView（本）;
    column1.setLayoutParams（新ViewGroup.LayoutParams（ViewGroup.LayoutParams.FILL_PARENT，ViewGroup.LayoutParams.WRAP_CONTENT））;
    column1.setBackgroundColor（Color.YELLOW）;
    column1.setTextColor（Color.BLUE）;
    column1.setText（COL1值）;
    tableRow.addView（列1）;    TextView中列2 =新的TextView（本）;
    column2.setLayoutParams（新ViewGroup.LayoutParams（ViewGroup.LayoutParams.FILL_PARENT，ViewGroup.LayoutParams.WRAP_CONTENT））;
    column2.setBackgroundColor（Color.RED）;
    column2.setTextColor（Color.GREEN）;
    column2.setText（col2的值）;
    tableRow.addView（列2）;    tableLayout.addView（tablerow的，新的TableLayout.LayoutParams（TableLayout.LayoutParams.FILL_PARENT，TableLayout.LayoutParams.WRAP_CONTENT））;    //tl.refreshDrawableState（）;
    // findViewById（R.id.tvt_scroll_relative）.refreshDrawableState（）;
}
 

解决方案

更改两个引用

  ViewGroup.LayoutParams
 

到

TableRow.LayoutParams

和它应该工作。

添加布局PARAMS到窗口小部件要求的LayoutParams 是一个内部类的周边布局的容器。

I have seen many posts regarding dynamically adding table rows, but I am not sure what I'm missing.

When I execute the following, nothing is displayed (aside from application title bar).

My Layout:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
        android:id="@+id/table_view_test_main"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        xmlns:android="http://schemas.android.com/apk/res/android"
        >
    <ScrollView
            android:id="@+id/tvt_scroll"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_alignParentTop="true"
            android:layout_alignParentLeft="true"
            >
        <RelativeLayout
                android:id="@+id/tvt_scroll_relative"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent">
            <TableLayout
                    android:id="@+id/tvt_tableview"
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    >
            </TableLayout>
        </RelativeLayout>
    </ScrollView>
</RelativeLayout>

My Activity:

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.table_view);

    TableLayout tableLayout = (TableLayout) findViewById(R.id.tvt_tableview);

    TableRow tableRow = new TableRow(this);
    tableRow.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.FILL_PARENT, TableRow.LayoutParams.WRAP_CONTENT));

    TextView column1 = new TextView(this);
    column1.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
    column1.setBackgroundColor(Color.YELLOW);
    column1.setTextColor(Color.BLUE);
    column1.setText("Col1 Value");
    tableRow.addView(column1);

    TextView column2 = new TextView(this);
    column2.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
    column2.setBackgroundColor(Color.RED);
    column2.setTextColor(Color.GREEN);
    column2.setText("Col2 Value");
    tableRow.addView(column2);

    tableLayout.addView(tableRow, new TableLayout.LayoutParams(TableLayout.LayoutParams.FILL_PARENT, TableLayout.LayoutParams.WRAP_CONTENT));

    //tl.refreshDrawableState();
    //findViewById(R.id.tvt_scroll_relative).refreshDrawableState();
}

解决方案

Change the two references

ViewGroup.LayoutParams

to

TableRow.LayoutParams

and it should work.

Adding layout params to a widget requires that the LayoutParams are a inner class of the surrounding layout container.

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