Android TableLayout Header row

Question

Okay, so I've got this TableLayout, and its full of data - with all of the rows added programmatically. I've got the TableLayout inside of a HorizontalScrollView, which in turn is inside a ScrollView - this gives me scrolling both horizontally and vertically. What I'm trying to do now is add a header row to it that will not scroll. I've tried moving things around so that both of my scroll views were actually inside of the TableLayout and adding the TableRows to the HorizontalScrollView; my hope was to be able to then add the header row outside of the scroll views.

The only other thing I can think of is having a second table layout just for the header row, but getting the columns to line up seems like it would be difficult. Any ideas?

Solution 1

One approach is by embedding a TableLayout within another TableLayout's row and putting the header in the preceding row as seen below. Aligning the data and the header requires the layout_width property of the header View objects and the data's View objects to be set to the same dip values. Also, the layout_weight property of the inner TableLayout's View objects must match its corresponding header. Now, in the XML below, I have placed 3 TextViews in the inner TableLayout in a single row to match with the column headers. This is just to show how the alignment can be done. You can populate that data programmatically by inflating a layout and adding it at runtime.

<?xml version="1.0" encoding="utf-8"?>
<TableLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent">


  <TableRow>
    <TextView android:text="Name"
        android:layout_width="100dp"        
        android:layout_column="0"
        android:layout_weight="1"/>
    <TextView android:text="Score"
        android:layout_width="30dp"
        android:layout_column="1"
        android:layout_weight="1">
    </TextView>
    <TextView android:text="Level"
        android:layout_width="30dp"
        android:layout_column="2"
        android:layout_weight="1">
    </TextView>
  </TableRow>

    <ScrollView android:layout_height="120dp">      
    <TableLayout android:id="@+id/score_table"
      android:layout_width="fill_parent"
      android:layout_height="fill_parent">          
    <TableRow>
        <TextView android:text="Al"
        android:layout_width="100dp"        
        android:layout_column="0"
        android:layout_weight="1">
        </TextView>
        <TextView android:text="1000"
        android:layout_width="30dp"
        android:layout_column="1"
        android:layout_weight="1">
        </TextView>
        <TextView android:text="2"
        android:layout_width="30dp"
        android:layout_column="2"
        android:layout_weight="1">
        </TextView>
    </TableRow>
  </TableLayout>
  </ScrollView>     
</TableLayout>

Solution 2

I actually came up with another decent way of doing this.

Simply build the table normally with the header row as the first row, inside of a vertical orientation LinearLayout. Next, programmatically remove the first row then add it as the first child to the LinearLayout. This worked like a charm.

Edit: This also works without having to specify static column widths.

Solution 3

I know that the question is old, but it was the first one, that Google gave me as I've had the same problem. And since I think I've found a better solution, I would like to share it.

Idea: put the TableLayout (inside the ScrollView) into RelativeLayout and create an overlay, that would draw the first (header) row over everything else.

Here is layout.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"

    android:id="@+id/table_wrapper"

    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
>
    <ScrollView

        android:layout_width="wrap_content"
        android:layout_height="wrap_content"

        tools:ignore="UselessParent"
    >
        <TableLayout

            android:id="@+id/table"

            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
        />
    </ScrollView>
</RelativeLayout>

And here is the code:

TableLayout table = (TableLayout)view.findViewById(R.id.table);

final TableRow headerRow = new TableRow(context);
table.addView(headerRow);

table.addView(new TableRow(context));
table.addView(new TableRow(context));
table.addView(new TableRow(context));


RelativeLayout tableWrapper = (RelativeLayout)view.findViewById(R.id.table_wrapper);

View fakeHeaderView = new View(context) {
    @Override
    public void draw(Canvas canvas) {
        headerRow.draw(canvas);
    }
    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

        int width = headerRow.getMeasuredWidth();
        int height = headerRow.getMeasuredHeight();

        widthMeasureSpec = MeasureSpec.makeMeasureSpec(width, MeasureSpec.EXACTLY);
        heightMeasureSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY);

        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }
};

tableWrapper.addView(fakeHeaderView);

Solution 4

<?xml version="1.0" encoding="utf-8"?>
<TableLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent">


  <TableRow>
    <TextView android:text="Name"
        android:layout_width="100dp"        
        android:layout_column="0"
        android:layout_weight="1"/>
    <TextView android:text="Score"
        android:layout_width="30dp"
        android:layout_column="1"
        android:layout_weight="1">
    </TextView>
    <TextView android:text="Level"
        android:layout_width="30dp"
        android:layout_column="2"
        android:layout_weight="1">
    </TextView>
  </TableRow>

    <ScrollView android:layout_height="120dp">      
    <TableLayout android:id="@+id/score_table"
      android:layout_width="fill_parent"
      android:layout_height="fill_parent">          
    <TableRow>
        <TextView android:text="Al"
        android:layout_width="100dp"        
        android:layout_column="0"
        android:layout_weight="1">
        </TextView>
        <TextView android:text="1000"
        android:layout_width="30dp"
        android:layout_column="1"
        android:layout_weight="1">
        </TextView>
        <TextView android:text="2"
        android:layout_width="30dp"
        android:layout_column="2"
        android:layout_weight="1">
        </TextView>
    </TableRow>
  </TableLayout>
  </ScrollView>     
</TableLayout>

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