ExpandableLinearLayout.java

package net.osmand.view;

import net.osmand.plus.R;
import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.widget.LinearLayout;

public class ExpandableLinearLayout extends LinearLayout {

	private float maxWidth;

	public ExpandableLinearLayout(Context context, AttributeSet attrs) {
		super(context, attrs);
		if(attrs != null) {
			TypedArray ar = context.obtainStyledAttributes(attrs, R.styleable.ExpandableView);
			maxWidth = ar.getDimension(R.styleable.ExpandableView_maxVisibleWidth, 0);
			if (ar != null) {
				ar.recycle();
			}
		}
	}
	
	public ExpandableLinearLayout(Context context) {
		this(context, null);
	}
	
	
	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		if (maxWidth > 0) {
			if (MeasureSpec.getMode(widthMeasureSpec) == MeasureSpec.UNSPECIFIED) {
				widthMeasureSpec = MeasureSpec.makeMeasureSpec((int) maxWidth, MeasureSpec.AT_MOST);
			} else if (MeasureSpec.getMode(widthMeasureSpec) == MeasureSpec.AT_MOST && (MeasureSpec.getSize(widthMeasureSpec)) > maxWidth) {
				widthMeasureSpec = MeasureSpec.makeMeasureSpec((int) maxWidth, MeasureSpec.AT_MOST);
			} else if (MeasureSpec.getMode(widthMeasureSpec) == MeasureSpec.EXACTLY && (MeasureSpec.getSize(widthMeasureSpec)) > maxWidth) {
				widthMeasureSpec = MeasureSpec.makeMeasureSpec((int) maxWidth, MeasureSpec.EXACTLY);
			}
		}
		super.onMeasure(widthMeasureSpec, heightMeasureSpec);
//		if(maxWidth != 0 && getMeasuredWidth() > maxWidth) {
//			setMeasuredDimension((int) maxWidth, getMeasuredHeight());
//		}
	}

}