GridLayout(not GridView) - Spaces between the cells

I am using `GridLayout`(support) for displaying `ImageView`s in my application. There are 3 columns and 5 rows. The problem is that the cells in the `GridLayout` automatically get some space between them. I am not setting any padding or margin for the cells. Please refer to the image below. All cells are added dynamically and here is how I add these cells. Getting Screen Width and Height: ``` Point size = new Point(); getWindowManager().getDefaultDisplay().getSize(size); screenWidth = size.x; screenHeight = size.y; rowHeight = (int) (screenHeight * 0.2); ``` Adding View to GridLayout: ``` GridLayout.LayoutParams params = new GridLayout.LayoutParams( getSpec(rowColumn[0]), getSpec(rowColumn[1])); params.height = rowHeight; if (rowColumn[1].equalsIgnoreCase("col_full")) { params.width = (int) (screenWidth); } else if (rowColumn[1].equalsIgnoreCase("col_two_part")) { params.width = (int) (screenWidth * 0.6); } else { params.width = (int) (screenWidth * 0.3); } ImageButton image = (ImageButton) imageHashMap .get(reOrderedButtonsListCopy.get(i)); image.setLayoutParams(params); gridLayout.addView(image, params); ``` XML Layout: ``` <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res/com.xx.xxx" android:id="@+id/scrollView1" android:layout_width="wrap_content" android:layout_height="wrap_content" > <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" > <android.support.v7.widget.GridLayout xmlns:app="http://schemas.android.com/apk/res/com.xx.xxx" android:id="@+id/gridlayout_main" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_margin="2dp" app:columnCount="3" app:rowCount="5" > </android.support.v7.widget.GridLayout> </LinearLayout> </ScrollView> ``` Current result: The red lines show the spaces in between the cells. Also, there is some space on the left side of GridLayout. I have only given `2dp` as `layout_margin`. Any reasons why this padding occurs? [EDIT] Making the following changes removed the spacings. ``` gridLayout = (GridLayout) findViewById(R.id.gridlayout_main); gridLayout.setUseDefaultMargins(false); gridLayout.setAlignmentMode(GridLayout.ALIGN_BOUNDS); gridLayout.setRowOrderPreserved(false); ``` Refer to the image below.