Java tutorial
/* * Firetweet - 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.getlantern.firetweet.activity.support; import android.annotation.SuppressLint; import android.content.Intent; import android.graphics.Rect; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentTransaction; import android.support.v4.app.ListFragment; import android.support.v4.view.WindowCompat; import android.support.v7.app.ActionBar; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.view.View.OnLongClickListener; import android.view.Window; import android.view.WindowManager.LayoutParams; import org.getlantern.firetweet.R; import org.getlantern.firetweet.activity.iface.IControlBarActivity; import org.getlantern.firetweet.fragment.iface.IBaseFragment; import org.getlantern.firetweet.fragment.iface.IBaseFragment.SystemWindowsInsetsCallback; import org.getlantern.firetweet.fragment.iface.IBasePullToRefreshFragment; import org.getlantern.firetweet.fragment.iface.RefreshScrollTopInterface; import org.getlantern.firetweet.fragment.iface.SupportFragmentCallback; import org.getlantern.firetweet.fragment.support.SearchFragment; import org.getlantern.firetweet.util.MultiSelectEventHandler; import org.getlantern.firetweet.util.ThemeUtils; import org.getlantern.firetweet.util.Utils; import org.getlantern.firetweet.util.accessor.ActivityAccessor; import org.getlantern.firetweet.util.accessor.ActivityAccessor.TaskDescriptionCompat; import org.getlantern.firetweet.view.TintedStatusFrameLayout; import static org.getlantern.firetweet.util.Utils.createFragmentForIntent; import static org.getlantern.firetweet.util.Utils.matchLinkId; public class LinkHandlerActivity extends BaseActionBarActivity implements OnClickListener, OnLongClickListener, SystemWindowsInsetsCallback, IControlBarActivity, SupportFragmentCallback { private ControlBarShowHideHelper mControlBarShowHideHelper = new ControlBarShowHideHelper(this); private MultiSelectEventHandler mMultiSelectHandler; private TintedStatusFrameLayout mMainContent; private boolean mFinishOnly; @Override public Fragment getCurrentVisibleFragment() { return getSupportFragmentManager().findFragmentById(R.id.main_content); } @Override public void onDetachFragment(Fragment fragment) { } @Override public void onSetUserVisibleHint(Fragment fragment, boolean isVisibleToUser) { } @Override public boolean triggerRefresh(int position) { return false; } @Override public void onClick(final View v) { switch (v.getId()) { case R.id.go_top: { final Fragment fragment = getSupportFragmentManager().findFragmentById(R.id.main_content); if (fragment instanceof RefreshScrollTopInterface) { ((RefreshScrollTopInterface) fragment).scrollToStart(); } else if (fragment instanceof ListFragment) { ((ListFragment) fragment).setSelection(0); } break; } } } @Override public boolean onLongClick(final View v) { switch (v.getId()) { case R.id.go_top: { final Fragment fragment = getSupportFragmentManager().findFragmentById(R.id.main_content); if (fragment instanceof RefreshScrollTopInterface) { ((RefreshScrollTopInterface) fragment).triggerRefresh(); } return true; } } return false; } @Override public boolean onOptionsItemSelected(final MenuItem item) { switch (item.getItemId()) { case MENU_HOME: { if (mFinishOnly) { finish(); } else { navigateUpFromSameTask(); } break; } } return super.onOptionsItemSelected(item); } @Override protected IBasePullToRefreshFragment getCurrentPullToRefreshFragment() { final Fragment fragment = getCurrentVisibleFragment(); if (fragment instanceof IBasePullToRefreshFragment) return (IBasePullToRefreshFragment) fragment; else if (fragment instanceof SupportFragmentCallback) { final Fragment curr = ((SupportFragmentCallback) fragment).getCurrentVisibleFragment(); if (curr instanceof IBasePullToRefreshFragment) return (IBasePullToRefreshFragment) curr; } return null; } @Override protected void onCreate(final Bundle savedInstanceState) { mMultiSelectHandler = new MultiSelectEventHandler(this); mMultiSelectHandler.dispatchOnCreate(); final Intent intent = getIntent(); final Uri data = intent.getData(); final int linkId = matchLinkId(data); requestWindowFeatures(getWindow(), linkId, data); super.onCreate(savedInstanceState); final ActionBar actionBar = getSupportActionBar(); if (actionBar != null) { actionBar.setDisplayHomeAsUpEnabled(true); setActionBarBackground(actionBar, linkId, data); } setContentView(R.layout.activity_content_fragment); mMainContent.setOnFitSystemWindowsListener(this); setStatusBarColor(linkId, data); setTaskInfo(linkId, data); setSupportProgressBarIndeterminateVisibility(false); if (data == null || !showFragment(linkId, data)) { finish(); } } @Override protected void onStart() { super.onStart(); mMultiSelectHandler.dispatchOnStart(); } @Override protected void onStop() { mMultiSelectHandler.dispatchOnStop(); super.onStop(); } @Override public void onFitSystemWindows(Rect insets) { super.onFitSystemWindows(insets); final Fragment fragment = getSupportFragmentManager().findFragmentById(R.id.main_content); if (fragment instanceof IBaseFragment) { ((IBaseFragment) fragment).requestFitSystemWindows(); } } @Override public void onSupportContentChanged() { super.onSupportContentChanged(); mMainContent = (TintedStatusFrameLayout) findViewById(R.id.main_content); } public final void setSubtitle(CharSequence subtitle) { final ActionBar actionBar = getSupportActionBar(); if (actionBar == null) return; actionBar.setSubtitle(subtitle); } private void requestWindowFeatures(Window window, int linkId, Uri uri) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { window.addFlags(LayoutParams.FLAG_TRANSLUCENT_STATUS); } supportRequestWindowFeature(WindowCompat.FEATURE_ACTION_BAR_OVERLAY); supportRequestWindowFeature(WindowCompat.FEATURE_ACTION_MODE_OVERLAY); final int transitionRes; switch (linkId) { case LINK_ID_USER: { transitionRes = R.transition.transition_user; break; } // case LINK_ID_STATUS: { // transitionRes = R.transition.transition_status; // break; // } default: { transitionRes = 0; break; } } if (transitionRes != 0 && Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP && !ThemeUtils.isTransparentBackground(this)) { Utils.setSharedElementTransition(this, window, transitionRes); } } @SuppressLint("AppCompatMethod") private void setActionBarBackground(ActionBar actionBar, int linkId, Uri data) { switch (linkId) { case LINK_ID_USER: { break; } case LINK_ID_SEARCH: case LINK_ID_USER_LISTS: { ThemeUtils.applyActionBarBackground(actionBar, this, getCurrentThemeResourceId(), getCurrentThemeColor(), false); ThemeUtils.applyActionBarBackground(getActionBar(), this, getCurrentThemeResourceId(), getCurrentThemeColor(), true); break; } default: { ThemeUtils.applyActionBarBackground(actionBar, this, getCurrentThemeResourceId(), getCurrentThemeColor(), true); ThemeUtils.applyActionBarBackground(getActionBar(), this, getCurrentThemeResourceId(), getCurrentThemeColor(), true); break; } } } private void setStatusBarColor(int linkId, Uri uri) { switch (linkId) { case LINK_ID_USER: { mMainContent.setShadowColor(0xA0000000); mMainContent.setDrawShadow(false); mMainContent.setDrawColor(true); break; } default: { mMainContent.setDrawShadow(false); mMainContent.setDrawColor(true); mMainContent.setFactor(1); final int color = getCurrentThemeColor(); final int alpha = getCurrentThemeBackgroundAlpha(); if (ThemeUtils.isDarkTheme(getCurrentThemeResourceId())) { mMainContent.setColor(getResources().getColor(R.color.background_color_action_bar_dark), alpha); } else { mMainContent.setColor(color, alpha); } break; } } } private void setTaskInfo(int linkId, Uri uri) { switch (linkId) { case LINK_ID_USER: { break; } default: { if (ThemeUtils.isColoredActionBar(getCurrentThemeResourceId())) { ActivityAccessor.setTaskDescription(this, new TaskDescriptionCompat(null, null, getCurrentThemeColor())); } break; } } } private boolean showFragment(final int linkId, final Uri uri) { final Intent intent = getIntent(); intent.setExtrasClassLoader(getClassLoader()); final Fragment fragment = createFragmentForIntent(this, linkId, intent); if (uri == null || fragment == null) return false; switch (linkId) { case LINK_ID_STATUS: { setTitle(R.string.status); break; } case LINK_ID_USER: { setTitle(R.string.user); break; } case LINK_ID_USER_TIMELINE: { setTitle(R.string.statuses); break; } case LINK_ID_USER_FAVORITES: { setTitle(R.string.favorites); break; } case LINK_ID_USER_FOLLOWERS: { setTitle(R.string.followers); break; } case LINK_ID_USER_FRIENDS: { setTitle(R.string.following); break; } case LINK_ID_USER_BLOCKS: { setTitle(R.string.blocked_users); break; } case LINK_ID_MUTES_USERS: { setTitle(R.string.twitter_muted_users); break; } case LINK_ID_DIRECT_MESSAGES_CONVERSATION: { setTitle(R.string.direct_messages); break; } case LINK_ID_USER_LIST: { setTitle(R.string.user_list); break; } case LINK_ID_USER_LISTS: { setTitle(R.string.user_lists); break; } case LINK_ID_USER_LIST_TIMELINE: { setTitle(R.string.list_timeline); break; } case LINK_ID_USER_LIST_MEMBERS: { setTitle(R.string.list_members); break; } case LINK_ID_USER_LIST_SUBSCRIBERS: { setTitle(R.string.list_subscribers); break; } case LINK_ID_USER_LIST_MEMBERSHIPS: { setTitle(R.string.lists_following_user); break; } case LINK_ID_SAVED_SEARCHES: { setTitle(R.string.saved_searches); break; } case LINK_ID_USER_MENTIONS: { setTitle(R.string.user_mentions); break; } case LINK_ID_INCOMING_FRIENDSHIPS: { setTitle(R.string.incoming_friendships); break; } case LINK_ID_USERS: { setTitle(R.string.users); break; } case LINK_ID_STATUSES: { setTitle(R.string.statuses); break; } case LINK_ID_USER_MEDIA_TIMELINE: { setTitle(R.string.media); break; } case LINK_ID_STATUS_RETWEETERS: { setTitle(R.string.users_retweeted_this); break; } case LINK_ID_STATUS_FAVORITERS: { setTitle(R.string.users_retweeted_this); break; } case LINK_ID_STATUS_REPLIES: { setTitle(R.string.view_replies); break; } case LINK_ID_SEARCH: { setTitle(android.R.string.search_go); setSubtitle(uri.getQueryParameter(QUERY_PARAM_QUERY)); break; } } mFinishOnly = Boolean.parseBoolean(uri.getQueryParameter(QUERY_PARAM_FINISH_ONLY)); final FragmentTransaction ft = getSupportFragmentManager().beginTransaction(); ft.replace(R.id.main_content, fragment); ft.commit(); return true; } @Override public void setControlBarVisibleAnimate(boolean visible) { // Currently only search page needs this pattern, so we only enable this feature for it. if (!(getCurrentVisibleFragment() instanceof SearchFragment)) return; mControlBarShowHideHelper.setControlBarVisibleAnimate(visible); } @Override public void setControlBarOffset(float offset) { final ActionBar actionBar = getSupportActionBar(); if (actionBar == null) return; actionBar.setHideOffset(Math.round((1 - offset) * getControlBarHeight())); notifyControlBarOffsetChanged(); } @Override public float getControlBarOffset() { final ActionBar actionBar = getSupportActionBar(); if (actionBar == null) return 0; return 1f - actionBar.getHideOffset() / (float) getControlBarHeight(); } @Override public int getControlBarHeight() { final ActionBar actionBar = getSupportActionBar(); return actionBar != null ? actionBar.getHeight() : 0; } }