A gridlayout override to have the same width for all cells (expect for the first one because in my case it's an header)

GridLayoutUniform.java

/*
 * Copyright (C) 2013 Stan Kocken (http://www.stankocken.com)
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.skocken.gist;

import android.content.Context;
import android.support.v7.widget.GridLayout;
import android.util.AttributeSet;
import android.view.View;

/**
 * @author stan.kocken@gmail.com
 * 
 */
public class GridLayoutUniform extends GridLayout {
    /** Used locally to tag Logs */
    @SuppressWarnings("unused")
    private static final String TAG = GridLayoutUniform.class.getSimpleName();

    public GridLayoutUniform(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public GridLayoutUniform(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public GridLayoutUniform(Context context) {
        super(context);
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        super.onLayout(changed, l, t, r, b);
        for (int i = 1; i < getChildCount(); i++) {
            View child = getChildAt(i);
            // to have all field with the same width (expect for the first one, it's an header)
            GridLayout.LayoutParams params = (GridLayout.LayoutParams) child.getLayoutParams();
            int newWidth = ((r - l) / getColumnCount()) - params.rightMargin - params.leftMargin;
            if (newWidth != params.width) {
                params.width = newWidth;
                child.setLayoutParams(params);
            }
        }
    }
}