An extended RelativeLayout that fixes layout issues when the size of the layout is inexact (that is, wrap_content) and you want to base the positioning of one or more child views on the positioning of another child view that is itself positioned by layout_centerInParent, layout_centerHorizontal or layout_centerVertical. It is clearly not efficie…

DoubleMeasureRelativeLayout.java

/*
 * Copyright (C) 2013 Scott Weber
 *
 * 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.scottweber.widget;

import android.content.Context;
import android.util.AttributeSet;
import android.widget.RelativeLayout;

public class DoubleMeasureRelativeLayout extends RelativeLayout {

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

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

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

	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		super.onMeasure(widthMeasureSpec, heightMeasureSpec);
		
		if (MeasureSpec.getMode(widthMeasureSpec) != MeasureSpec.EXACTLY
				|| MeasureSpec.getMode(heightMeasureSpec) != MeasureSpec.EXACTLY) {
			super.onMeasure(MeasureSpec.makeMeasureSpec(getMeasuredWidth(), MeasureSpec.EXACTLY),
					MeasureSpec.makeMeasureSpec(getMeasuredHeight(), MeasureSpec.EXACTLY));
		}
	}
}