Question

I have a relative layout with textviews ordered in more then one column. When clicked on screen, there is a “popup screen” or “input screen” (have no idea how it is called) in which I define the time “from” and “to”, what is the name of school class etc. It will compute which textviews it needs to merge from that input. Merged textviews have to be like one larger textview. Is it possible to do something like this?

Thanks for the answer in ahead.

Something like this:
https://i.stack.imgur.com/r1o8D.png

Answer 1

I’ve got an idea you could try creating a custom view to draw this instead of using views.

Extend the View class in a new class and override the onDraw method.

//variables
Paint paint[]; //Set up these paints with the colors you need
int rowWidth, int colHeight;
void onDraw(Canvas c){
    for(int i=0;i<noOfRows;i++){
       for(int j=0;j<noOfColumns;j++){
            if(cellRequired(i,j)){
              //cellRequired will be whatever logic you have to check if cell is required

                int rectHeight=colHeight; //Now the Rect Height changes whether the cell
                                         //  below is in use or not.
                for(int k=i;k<noOfRows;k++){                         
                     //This loop will run through the rows and see if merging is required
                      if(cellRequired(i,k))
                             rectHeight+=colHeight; //Merge Cell
                      else 
                              break; //If not required at any point break loop
                 }
                 //Draw Rectangle background
                 c.drawRect(i*rowWidth +i, j*colHeight +j, rowWidth, rectHeight, backPaint);
                 //Draw Text
                 canvas.drawText("Text",i*rowWidth +i, j*colHeight +j, paint[requiredPaint]);
                 //I added the plus i and plus j so there'd be a gap in the rectangles
                 // Then it will be a border
            }         
       }
    }
}

Android documentation on custom controls
you

Android: Tutorial on Custom View creation

How to make a custom view similar to above

http://www.droidnova.com/playing-with-graphics-in-android-part-i,147.html

Go through these and then through the code above. Hopefully it should show you how to implement it.