Java tutorial
/* * Copyright (C) 2014 Freddie (Musenkishi) Lust-Hed * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.musenkishi.wally.activities; import android.app.DownloadManager; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.graphics.Color; import android.os.Bundle; import android.support.v4.view.ViewPager; import android.support.v7.app.ActionBar; import android.support.v7.widget.Toolbar; import android.view.MenuItem; import android.view.View; import com.musenkishi.wally.R; import com.musenkishi.wally.adapters.SmartFragmentPagerAdapter; import com.musenkishi.wally.base.BaseActivity; import com.musenkishi.wally.base.BaseFragment; import com.musenkishi.wally.base.WallyApplication; import com.musenkishi.wally.observers.FileChangeReceiver; import com.musenkishi.wally.observers.FiltersChangeReceiver; import com.musenkishi.wally.views.TabBarView; public class MainActivity extends BaseActivity { public static final String TAG = "com.musenkishi.wally.MainActivity"; private static final String STATE_APPBAR_COLOR = TAG + ".AppBar.Color"; private ViewPager viewPager; private SmartFragmentPagerAdapter pagerAdapter; private TabBarView tabBarView; private FileChangeReceiver fileChangeReceiver; private FiltersChangeReceiver filtersChangeReceiver; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setToolbar(toolbar); if (getSupportActionBar() != null) { getSupportActionBar().setElevation(12.0f); getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM); getSupportActionBar().setCustomView(R.layout.tab_bar); tabBarView = (TabBarView) getSupportActionBar().getCustomView(); } fileChangeReceiver = new FileChangeReceiver(); filtersChangeReceiver = new FiltersChangeReceiver(); viewPager = (ViewPager) findViewById(R.id.fragment_pager); pagerAdapter = new SmartFragmentPagerAdapter(getSupportFragmentManager()); viewPager.setAdapter(pagerAdapter); viewPager.setOffscreenPageLimit(4); viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() { @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { if (tabBarView != null) { tabBarView.setOffset(positionOffset); tabBarView.setSelectedTab(position); } } @Override public void onPageSelected(int position) { if (pagerAdapter != null && pagerAdapter.getRegisteredFragment(position) != null) { for (int i = 0; i < pagerAdapter.getCount(); i++) { if (pagerAdapter.getRegisteredFragment(i) != null) { pagerAdapter.getRegisteredFragment(i).setUserVisibleHint(position == i); } } } } @Override public void onPageScrollStateChanged(int state) { } }); if (tabBarView != null) { tabBarView.setSelectedTab(0); } tabBarView.setOnTabClickedListener(new TabBarView.OnTabClickedListener() { @Override public void onTabClicked(int index) { viewPager.setCurrentItem(index); } }); if (savedInstanceState != null && savedInstanceState.containsKey(STATE_APPBAR_COLOR)) { colorizeActionBar(savedInstanceState.getInt(STATE_APPBAR_COLOR)); } } @Override protected void onSaveInstanceState(Bundle outState) { if (pagerAdapter != null && pagerAdapter.getRegisteredFragment(viewPager.getCurrentItem()) != null) { outState.putInt(STATE_APPBAR_COLOR, ((BaseFragment) pagerAdapter.getRegisteredFragment(viewPager.getCurrentItem())) .getAppBarColor()); } super.onSaveInstanceState(outState); } @Override public boolean onOptionsItemSelected(MenuItem item) { return super.onOptionsItemSelected(item); } @Override public void onResume() { super.onResume(); registerReceiver(fileChangeReceiver, new IntentFilter(FileChangeReceiver.FILES_CHANGED)); registerReceiver(filtersChangeReceiver, new IntentFilter(FiltersChangeReceiver.FILTERS_CHANGED)); } @Override public void onPause() { unregisterReceiver(fileChangeReceiver); unregisterReceiver(filtersChangeReceiver); super.onPause(); } public void addOnFileChangedListener(FileChangeReceiver.OnFileChangeListener onFileChangeListener) { if (fileChangeReceiver != null) { fileChangeReceiver.addListener(onFileChangeListener); } } public void addOnFiltersChangedListener(FiltersChangeReceiver.OnFiltersChangeListener onFiltersChangeListener) { if (filtersChangeReceiver != null) { filtersChangeReceiver.addListener(onFiltersChangeListener); } } @Override protected void handleReceivedIntent(Context context, Intent intent) { long id = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, 0L); if (WallyApplication.getDownloadIDs().containsKey(id)) { WallyApplication.getDownloadIDs().remove(id); if (fileChangeReceiver != null) { Intent fileChangeIntent = new Intent(FileChangeReceiver.FILES_CHANGED); fileChangeReceiver.onReceive(context, fileChangeIntent); } View heartTabImageView = tabBarView.getTab(4).getImageView(); startHeartPopoutAnimation(heartTabImageView, Color.WHITE); } } public TabBarView getTabBarView() { return this.tabBarView; } }