mirror of
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73 lines
2.3 KiB
Java
73 lines
2.3 KiB
Java
/* ownCloud Android client application
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* Copyright (C) 2012 Bartek Przybylski
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* Copyright (C) 2012-2013 ownCloud Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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package com.owncloud.android.ui;
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import android.content.Context;
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import android.graphics.Canvas;
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import android.util.AttributeSet;
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import android.widget.ListView;
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/**
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* ListView allowing to specify the position of an item that should be centered in the visible area, if possible.
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*
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* The cleanest way I found to overcome the problem due to getHeight() returns 0 until the view is really drawn.
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*
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* @author David A. Velasco
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*/
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public class ExtendedListView extends ListView {
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private int mPositionToSetAndCenter;
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public ExtendedListView(Context context) {
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super(context);
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}
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public ExtendedListView(Context context, AttributeSet attrs) {
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super(context, attrs);
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}
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public ExtendedListView(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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}
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/**
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* {@inheritDoc}
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*
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*
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*/
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@Override
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protected void onDraw (Canvas canvas) {
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super.onDraw(canvas);
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if (mPositionToSetAndCenter > 0) {
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this.setSelectionFromTop(mPositionToSetAndCenter, getHeight() / 2);
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mPositionToSetAndCenter = 0;
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}
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}
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/**
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* Public method to set the position of the item that should be centered in the visible area of the view.
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*
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* The position is saved here and checked in onDraw().
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*
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* @param position Position (in the list of items) of the item to center in the visible area.
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*/
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public void setAndCenterSelection(int position) {
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mPositionToSetAndCenter = position;
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}
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}
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