Java tutorial
/* * Twidere - Twitter client for Android * * Copyright (C) 2012-2014 Mariotaku Lee <mariotaku.lee@gmail.com> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.mariotaku.twidere.view; import android.content.Context; import android.graphics.drawable.Drawable; import android.graphics.drawable.TransitionDrawable; import android.util.AttributeSet; import android.view.ViewConfiguration; import android.widget.FrameLayout; import org.apache.commons.lang3.ArrayUtils; import org.mariotaku.twidere.util.ThemeUtils; public class MessageCardItemFrameLayout extends FrameLayout { public MessageCardItemFrameLayout(final Context context) { this(context, null); } public MessageCardItemFrameLayout(final Context context, final AttributeSet attrs) { this(context, attrs, 0); } public MessageCardItemFrameLayout(final Context context, final AttributeSet attrs, final int defStyle) { super(context, attrs, defStyle); if (isInEditMode()) return; ThemeUtils.applyThemeAlphaToDrawable(context, getBackground()); } @Override protected void drawableStateChanged() { super.drawableStateChanged(); final Drawable d = getBackground(); if (d != null && d.isStateful()) { final int[] state = getDrawableState(); d.setState(state); final Drawable current = d.getCurrent(); if (current instanceof TransitionDrawable) { final TransitionDrawable td = (TransitionDrawable) current; if (ArrayUtils.contains(state, android.R.attr.state_pressed)) { td.startTransition(ViewConfiguration.getLongPressTimeout()); } else { td.resetTransition(); } } } } }