<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <Button android:layout_height="wrap_content" android:layout_width="wrap_content" android:id="@+id/button_DragPattern" android:text="DragMe"></Button>
    <TableLayout android:layout_height="50dp" android:layout_width="300dp" android:id="@+id/tableLayout_DropContainer">
        <TableRow android:layout_width="match_parent" android:id="@+id/tableRow_DropRow" android:layout_height="match_parent">
        </TableRow>
    </TableLayout>
</LinearLayout>

package TableDnD.Activities;

import android.app.Activity;
import android.content.ClipData;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.view.DragEvent;
import android.view.View;
import android.view.View.DragShadowBuilder;
import android.view.View.OnDragListener;
import android.view.View.OnLongClickListener;
import android.widget.Button;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;

public class TableDnDActivity extends Activity 
{
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        TableRow tr = (TableRow)findViewById(R.id.tableRow_DropRow);
        /*TextView tv = new TextView(this);
        tv.setText("HUHU");
        tr.addView(tv);*/
        tr.setOnDragListener(new BoxDragListener());
        
        Button b = (Button)findViewById(R.id.button_DragPattern);
        b.setOnLongClickListener(new OnLongClickListener() 
        {
            public boolean onLongClick(View v) 
            {
                ClipData data = ClipData.newPlainText("foo","bar");
                DragShadowBuilder shadowBuilder = new DragShadowBuilder(v);
                v.startDrag(data, shadowBuilder, v, 0);
                return false;
            }
        });
        
        /*TableLayout tl = (TableLayout)findViewById(R.id.tableLayout_DropContainer);
        tl.setOnDragListener(new BoxDragListener());*/
    }
    
    public Context getGlobalContext()
    {
        return this;
    }
    
    class BoxDragListener implements OnDragListener
    {
        boolean m_bInsideOfMe = false;
        
        public boolean onDrag(View self, DragEvent event) 
        {
            if (event.getAction() == DragEvent.ACTION_DRAG_STARTED)
            {
                
            } 
            else if (event.getAction() == DragEvent.ACTION_DRAG_ENTERED)
            {
                self.setBackgroundColor(Color.BLUE);
                //((TableRow)self).setBackgroundColor(Color.BLUE);
                m_bInsideOfMe = true;
            } 
            else if (event.getAction() == DragEvent.ACTION_DRAG_EXITED)
            {
                self.setBackgroundColor(Color.BLACK);
                //((TableRow)self).setBackgroundColor(Color.BLACK);
                m_bInsideOfMe = false;
            } 
            else if (event.getAction() == DragEvent.ACTION_DROP)
            {
                if (m_bInsideOfMe)
                {
                    // hier befinde ich mich in einer TableRow und lasse den Button los nun sollte er linksbündig in der
                    // Row eingefügt werden und gleichzeitig wenn die Row in die der Button gedroppt wurde die zuletzt zum
                    // TableLayout hinzugefügte ist eine neue Row hinzufügen in die auch gedroppt werden könnte
                    // Pseudocode (so stelle ich mir das in etwa vor):
                    
                    TableRow container = (TableRow) self;
                    container.addView(new Button(getGlobalContext()));
                    TableLayout parent = (TableLayout)container.getParent();
                    int i = 0;
                    while(!parent.getChildAt(i).equals(container))
                    {
                        i++;
                    }
                    if(i == parent.getChildCount()-1)
                    {
                        TableRow tr = new TableRow(getGlobalContext());
                        tr.setOnDragListener(new BoxDragListener());
                        /*TextView tv = new TextView(getGlobalContext());
                        tv.setText("HUHU");
                        tr.addView(tv);*/
                        parent.addView(tr);
                    }
                    ((TableRow)self).setBackgroundColor(Color.BLACK);
                }
            } 
            else if (event.getAction() == DragEvent.ACTION_DRAG_ENDED)
            {
                    
            }
            return true;
        }
    }
}