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.activity; import static org.mariotaku.twidere.util.Utils.restartActivity; import android.content.res.Resources; import android.content.res.Resources.Theme; import android.os.Bundle; import android.preference.PreferenceActivity; import android.support.v4.app.NavUtils; import org.mariotaku.twidere.Constants; import org.mariotaku.twidere.activity.iface.IThemedActivity; import org.mariotaku.twidere.util.ThemeUtils; import org.mariotaku.twidere.util.theme.TwidereResourceHelper; public abstract class BasePreferenceActivity extends PreferenceActivity implements Constants, IThemedActivity { private TwidereResourceHelper mResourceHelper; private int mCurrentThemeResource; private Theme mTheme; @Override public void finish() { super.finish(); overrideCloseAnimationIfNeeded(); } @Override public int getCurrentThemeResourceId() { return mCurrentThemeResource; } @Override public Resources getDefaultResources() { return super.getResources(); } @Override public Resources getResources() { return getThemedResources(); } @Override public Theme getTheme() { if (mTheme == null) { mTheme = getResources().newTheme(); mTheme.setTo(super.getTheme()); final int getThemeResourceId = getThemeResourceId(); if (getThemeResourceId != 0) { mTheme.applyStyle(getThemeResourceId, true); } } return mTheme; } @Override public int getThemeBackgroundAlpha() { return 0; } @Override public int getThemeColor() { return 0; } @Override public Resources getThemedResources() { if (mResourceHelper == null) { mResourceHelper = new TwidereResourceHelper(getThemeResourceId()); } return mResourceHelper.getResources(this, super.getResources()); } @Override public String getThemeFontFamily() { return VALUE_THEME_FONT_FAMILY_REGULAR; } @Override public int getThemeResourceId() { return ThemeUtils.getSettingsThemeResource(this); } @Override public void navigateUpFromSameTask() { NavUtils.navigateUpFromSameTask(this); overrideCloseAnimationIfNeeded(); } @Override public void overrideCloseAnimationIfNeeded() { if (shouldOverrideActivityAnimation()) { ThemeUtils.overrideActivityCloseAnimation(this); } else { ThemeUtils.overrideNormalActivityCloseAnimation(this); } } @Override public boolean shouldOverrideActivityAnimation() { return true; } protected final boolean isThemeChanged() { return getThemeResourceId() != mCurrentThemeResource; } @Override protected void onCreate(final Bundle savedInstanceState) { if (shouldOverrideActivityAnimation()) { ThemeUtils.overrideActivityOpenAnimation(this); } ThemeUtils.notifyStatusBarColorChanged(this, mCurrentThemeResource, 0, 0xFF); setTheme(mCurrentThemeResource = getThemeResourceId()); super.onCreate(savedInstanceState); setActionBarBackground(); } @Override protected void onResume() { super.onResume(); if (isThemeChanged()) { restart(); } else { ThemeUtils.notifyStatusBarColorChanged(this, mCurrentThemeResource, 0, 0xFF); } } protected final void restart() { restartActivity(this); } private final void setActionBarBackground() { // ThemeUtils.applyActionBarBackground(getActionBar(), this, // mCurrentThemeResource); } }