TableRow的addView（）如何工作？

Question

我试过

 private void addSnapPictureRow(TableLayout table, Bitmap bitmap) {
        /*
         * 1st row = TextView (Check In)
         */
        TableRow row = new TableRow(this);  
        row.setGravity(Gravity.CENTER_HORIZONTAL);
        // add text
        TextView text = new TextView(this);
        text.setText("Snap Picture");
        TableRow.LayoutParams textLayoutParams = new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.WRAP_CONTENT);
        textLayoutParams.setMargins(100, 0, 0, 0);
        row.addView(text, textLayoutParams);

        // add picture
        ImageView picture = new ImageView(this);
        picture.setImageResource(R.drawable.adium);
        row.addView(picture);

        /*
         * 2nd row = View (separator)
         */
        TableRow separator = new TableRow(this);
        View line = new View(this);
        TableRow.LayoutParams separatorLayoutParams = new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, 1);
        separatorLayoutParams.setMargins(100, 0, 0, 0);
        line.setBackgroundColor(Color.BLUE);
        separator.addView(line, separatorLayoutParams);

        // add row to table
        table.addView(row);
        // add a separator
        table.addView(separator);
    }

但是图片从未显示过。如果我将引力更改为CENTER_HORIZONTAL，则它仅显示图片的一小部分。

使用xml创建表时，我认为它会自动水平对齐。我无法理解TableRow布局的工作原理。谁能让我对此有所了解？

Answer 1

为每行添加额外的LinearLayout解决了我的问题;）。前一行的对齐导致图片离开屏幕。

private void addSnapPictureRow(TableLayout table, Bitmap bitmap) {
        /*
         * 1st row = TextView (Check In)
         */
        TableRow row = new TableRow(this);  
        LinearLayout outerLayout = new LinearLayout(this);
        // add text
        TextView text = new TextView(this);
        text.setText("Snap Picture");
        LinearLayout.LayoutParams textLayoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        textLayoutParams.setMargins(100, 0, 0, 0);

        // add picture
        ImageView picture = new ImageView(this);
        LinearLayout.LayoutParams pictureLayoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        picture.setImageResource(R.drawable.adium);
        pictureLayoutParams.setMargins(20, 0, 0, 0);

        outerLayout.addView(text, textLayoutParams);
        outerLayout.addView(picture, pictureLayoutParams);
        row.addView(outerLayout);

        /*
         * 2nd row = View (separator)
         */
        TableRow separator = new TableRow(this);
        View line = new View(this);
        TableRow.LayoutParams separatorLayoutParams = new TableRow.LayoutParams(400, 1);
        separatorLayoutParams.setMargins(100, 0, 0, 0);
        line.setBackgroundColor(Color.BLUE);
        separator.addView(line, separatorLayoutParams);

        // add row to table
        table.addView(row);
        // add a separator
        table.addView(separator);
    }