以编程方式添加时不显示布局

Question

我有一个TableLayout，我试图通过代码动态填写条目。在每个TableRow中，我想以更复杂的方式显示内容，例如：我试图在{LinearLayout内放置TableRow 1}}，在这个布局中，我将嵌套其他LinearLayouts以形成所需的结构。但是，在我的应用程序中它没有显示任何内容，所以我想知道是否有人可以查看我的代码并说出我在哪里出错了：

        // Main layout, added to the TableRow
        LinearLayout parentLayout = new LinearLayout(getContext());
        parentLayout.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT));
        parentLayout.setGravity(Gravity.CENTER_HORIZONTAL);
        parentLayout.setOrientation(LinearLayout.HORIZONTAL);

        // Image at the start (left-side) of the row
        ImageView iv = new ImageView(getContext());
        iv.setBackgroundResource(R.drawable.img_10sec);
        parentLayout.addView(iv);

        // Layout for the two texts, which are on top of each other
        // The layout should be of vertical orientation and be centred
        // (for the sake of testing it, only 1 TextView is used)
        LinearLayout group = new LinearLayout(getContext());
        group.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT));
        group.setGravity(Gravity.CENTER_VERTICAL);
        group.setOrientation(LinearLayout.VERTICAL);

        TextView name = new TextView(getContext());
        name.setText("Example " + i);
        name.setTextSize(20);
        name.setSingleLine(false);
        name.setPadding(10, 15, 0, 0);
        group.addView(name);

        // Tie everything together: table contains row, which contains the layout
        parentLayout.addView(group);
        row.addView(parentLayout);
        table.addView(row);

如果我完全删除所有布局并坚持使用ImageView＆amp;在TextView内TableRow，它运行正常。只有当我添加LinearLayouts时，它才会中断，我无法理解原因。

Answer 1

请尝试将layoutParameter的{​​{1}}设为TableRow和parentLayout.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT));

希望这有帮助。